Inclusion Criteria-Part A: Subject must meet all of the following applicable inclusion criteria to participate in this study:
• Patients must have histologically confirmed advanced RCC (any histology). Collecting duct tumors and tumors originating from the renal pelvis or upper urinary tract are considered of urothelial origin and are excluded from this protocol.
• Patients must have at least one measurable site of disease, per RECIST 1.1, that has not been previously irradiated. If the patient has had previous radiation to the marker lesion(s), there must be evidence of progression since the radiation.
• ECOG performance status 0-2
• Have signed the current approved informed consent form Patients must have adequate organ function within 14 days prior to study entry as evidenced by screening laboratory values that must meet the following criteria: Hematological:
• White blood cell (WBC) ≥ 2000/µL
• Absolute Neutrophil Count (ANC) ≥ 1500/μL
• Platelets (Plt) ≥ 100 x103/μL
• Hemoglobin (Hgb) > 9.0 g/dL (with or without transfusion) Renal:
• Serum Creatinine ≤ 1.5 x ULN; if creatinine > 1.5, subject must demonstrate CrCl as outlined below.
• Calculated creatinine clearance ≥ 40 mL/min using Cockcroft-Gault formula Hepatic:
• Bilirubin ≤ 1.5× upper limit of normal (ULN); Except subjects with Gilbert Syndrome, who can have total bilirubin < 3.0 mg/dL
• Aspartate aminotransferase (AST) ≤ 3 × ULN
• Alanine aminotransferase (ALT) ≤ 3 × ULN
• Archival tissue is mandatory (a tumor biopsy- core or excisional) of a metastatic lesion obtained within 1 year prior to study registration (within 4 weeks preferred). Tumor tissue from nephrectomy and site of metastasis will be required. If archival tissue of a metastatic lesion obtained within the preceding year is not available, patients must have at least one site of disease (not including bone metastases) accessible for core needle or excisional biopsy. If archival tissue of a metastatic lesion is not available and biopsy of a new lesion is not feasible, the subject is not eligible for the study.
• Patients should not have received prior systemic therapy for metastatic RCC. Prior radiotherapy must have been completed at least 2 weeks prior to the administration of study drug. Patients must be 2 weeks from prior major surgery and 1 week from pre-treatment biopsy. Prior systemic adjuvant therapy (excluding with PD1 or CTLA4 pathway blockers) is allowed if treatment completed > 12 months previously.
• Women of childbearing potential (WOCBP) must use appropriate method(s) of contraception. WOCBP should use an adequate method to avoid pregnancy for 23 weeks
• Women of childbearing potential must have a negative serum or urine pregnancy test (minimum sensitivity 25 IU/L or equivalent units of HCG) during screening for registration purposes. This pregnancy test should be repeated within 24 hours prior to the start of nivolumab.
• Women must not be breastfeeding
• Men who are sexually active with WOCBP must use any contraceptive method with a failure rate of less than 1% per year Men receiving nivolumab and who are sexually active with WOCBP will be instructed to adhere to contraception for a period of 31 weeks after the last dose of investigational product Women who are not of childbearing potential (ie, who are postmenopausal or surgically sterile as well as azoospermic men do not require contraception.
• Be willing and able to comply with this protocol.
• Patients are excluded if they have active brain metastases or leptomeningeal metastases. Subjects with brain metastases are eligible if metastases have been treated and there is no magnetic resonance imaging (MRI) evidence of progression for 2 weeks of more after treatment is complete and within 28 days prior to the first dose of nivolumab administration. There must also be no requirement for immunosuppressive doses of systemic corticosteroids (> 10 mg/day prednisone equivalents) for at least 2 weeks prior to study drug administration.
• Patients with controlled brain metastases are allowed on protocol if they had solitary brain metastases that was surgically resected without recurrence or treated with SRS without progression x 4 weeks.
• Patients should be excluded if they have an active, known or suspected autoimmune disease. Subjects are permitted to enroll if they have vitiligo, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger.
• Patients should be excluded if they have a condition requiring systemic treatment with either corticosteroids (> 10 mg daily prednisone equivalents) or other immunosuppressive medications within 14 days of study drug administration. Inhaled or topical steroids and adrenal replacement doses > 10 mg daily prednisone equivalents are permitted in the absence of active autoimmune disease.
• As there is potential for hepatic toxicity with nivolumab or nivolumab/ipilimumab combinations, drugs with a predisposition to hepatoxicity should be used with caution in patients treated with nivolumab-containing regimen
• Active infection requiring systemic therapy
• Has any other medical or personal condition that, in the opinion of the site investigator, may potentially compromise the safety or compliance of the patient, or may preclude the patient's successful completion of the clinical trial
• Patients should be excluded if they are positive test for hepatitis B virus surface antigen (HBV sAg) or hepatitis C virus ribonucleic acid (HCV antibody) indicating acute or chronic infection
• Patients should be excluded if they have known history of testing positive for human immunodeficiency virus (HIV) or known acquired immunodeficiency syndrome (AIDS)
• Allergies and Adverse Drug Reaction
• History of allergy to study drug components
• History of severe hypersensitivity reaction to any monoclonal antibody
• Known additional malignancies within the past 3 years (excluding basal of squamous cell skin cancers, CIS or localized prostate cancer that has been treated or is being observed) Inclusion/Exclusion Criteria- Part B
• Must meet eligibility criteria for initiation of Part A with the exception of being allowed to have prior nivolumab in Part A of this protocol
• Must have evidence of either RECIST 1.1 defined Disease Progression or Stable Disease 1 year after initiating nivolumab therapy
• Must undergo repeat tumor biopsy for acquisition of resistant tumor tissue
• Must not have had a Grade ≥ 3 irAE on nivolumab monotherapy
• Must not have untreated brain metastases
• Must not have had major surgery or radiation therapy within 14 days of starting study treatment
• Must not have active autoimmune disease
• Must not have a concurrent medical condition requiring use of systemic corticosteroids with prednisone >10 mg per day
• Must not have had prior systemic therapy for Stage IV RCC (except for nivolumab as part of part A of this protocol)
• Prior solid organ or stem cell transplant

• Histologically confirmed diagnosis of a locally advanced (not amenable to curative therapy such as surgical resection) metastatic cancer of the following histologies: melanoma (MEL), Merkel cell carcinoma (MCC), triple-negative breast cancer (TNBC), ovarian carcinoma, renal cell carcinoma (RCC), colorectal cancer, urothelial carcinoma, or sarcoma.
• Life expectancy > 12 weeks as determined by the Investigator.
• Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1.
• Measurable disease per RECIST 1.1.
• Patients enrolled in Cohorts 1-5, Cohort A, Cohort B and Phase 2 Doublet must be refractory to all therapies known to confer clinical benefit to their disease.
• Fresh tumor tissue available for cellular characterization and programmed cell death protein 1 (PD-L1) status.
• Injected lesions (up to two) must be between 20 mm and 90 mm in diameter for IT injection; lesions must be accessible for baseline and on-treatment biopsies.
• Demonstrated adequate organ function within 14 days of Cycle 1 Day 1 (C1D1).
• Use of an investigational agent or an investigational device within 21 days before administration of first dose of study drug(s).
• Patients treated with prior interleukin-2 (IL-2).
• Patients who have been previously treated with a toll-like receptor (TLR) agonist (excluding topical agents) and patients who have received experimental cancer vaccines.
• Patients who have received systemic interferon (IFN)α within the previous 6 months prior to enrollment to the study.
• Other active malignancy, except non-melanomic skin cancer
• Evidence of clinically significant interstitial lung disease or active, noninfectious pneumonitis.
• Prior surgery or radiotherapy within 14 days of initiating study drug(s). Patients must have recovered from all radiation-related toxicities, not required corticosteroids and have not had radiation pneumonitis.
• Prolonged Fridericia's corrected QT interval (QTcF) > 450 ms for men and > 470 ms for women at Screening.
• History of unstable or deteriorating cardiac disease within the previous 6 months prior to screening including but not limited to the following:
• Unstable angina or myocardial infarction.
• Congestive heart failure (NYHA Class III or IV).
• Uncontrolled clinically significant arrhythmias.
• Need for > 2 antihypertensive medications for management of hypertension (including diuretics).
• Patients with a history of any retinal disorders (e.g., retinal detachment, diabetic retinopathy, retinal hemorrhage, macular degeneration).

• Patients must have histologically confirmed MIBC (T2-T4a, N0-N1, M0 per American Joint Commission on Cancer [AJCC]) pure or mixed histology urothelial carcinoma. Clinical node-positive (N1) patients are eligible provided the lymph nodes (LNs) are confined to the true pelvis and are within the planned surgical LN dissection template.
• The initial TURBT that showed muscularis propria invasion should be within 8 weeks prior to beginning study therapy. Patients must have sufficient baseline tumor tissue from either initial or repeat TURBTs. The local site pathologist will be asked to estimate and record the rough approximate percentage of viable tumor in the TURBT sample (initial or repeat TURBT with highest tumor content) to document at least 20% viable tumor content prior to registration.
• Patients must be ineligible for cisplatin-based chemotherapy due to any of the following:
• Creatinine clearance(CrCl) <60 mL/min with Easter Cooperative Oncology Group (ECOG) Performance Status (PS) 0-1
• Hearing impaired ≥ Grade 2 by CTCAE criteria
• Neuropathy ≥ Grade 2 by CTCAE criteria
• Heart failure New York Heart Association (NYHA) ≥ III
• Patients must be medically fit for TURBT and RC.
• Age ≥ 18 years.
• Ability to understand and willingness to sign Institutional Review Board (IRB)-approved informed consent.
• Willing to provide tumor tissue, blood, and urine samples for research.
• Adequate organ function as measured by the following criteria, obtained ≤ 4 weeks prior to registration:
• Absolute Neutrophil Count (ANC) ≥ 1000/mm³ (stable off growth factor within 4 weeks of first study drug administration)
• Platelets ≥ 100,000/mm³
• Hemoglobin ≥ 8 g/dL
• Serum Creatinine Clearance ≥ 30 mL/min using the Cockcroft-Gault formula
• Alanine Aminotransferase (ALT) and Aspartate Aminotransferase (AST) ≤ 3x Upper Limit of Normal (ULN)
• Total Bilirubin ≤ 1.5x ULN (in the absence of previously diagnosed Gilbert's disease)
• Women must not be pregnant or breastfeeding since we do not know the effects of nivolumab and lirilumab on the fetus or breastfeeding child.
• Sexually active women of child-bearing potential with a non-sterilized male partner and sexually active men must agree to use 2 methods of adequate contraception (hormonal plus barrier or 2 barrier forms) OR abstinence prior to study entry, for the duration of study participation, and for 5 months for women and 7 months for men following last dose of study drugs.
• Active or prior documented autoimmune disease within the past 2 years prior to Screening or other immunosuppressive agent within 14 days of study treatment.
• Patients may not have locally advanced unresectable or metastatic urothelial carcinoma as assessed on baseline radiographic imaging obtained within 28 days prior to study registration.
• Patients may not have concurrent upper urinary tract (i.e. ureter, renal pelvis) invasive urothelial carcinoma. Patients with history of non-invasive (Ta, Tis) upper tract urothelial carcinoma that has been definitively treated with at least one post-treatment disease assessment (i.e. cytology, biopsy, imaging) that demonstrates no evidence of residual disease are eligible.
• Patients may not have another malignancy that could interfere with the evaluation of safety or efficacy of the study drugs. Patients with a prior malignancy will be allowed without study chair approval in the following circumstances:
• Not currently active and diagnosed at least 3 years prior to the date of registration.
• Non-invasive diseases such as low risk cervical cancer or any cancer in situ.
• Localized (early stage) cancer treated with curative intent (without evidence of recurrence and intent for further therapy), and in which no chemotherapy was indicated.(e.g. low/intermediate risk prostate cancer, etc.).
• Patients may not have received any prior immune checkpoint inhibitor (i.e. anti-KIR, anti-PD-1, anti-PD-L1, or other).
• Patients may not have undergone major surgery (e.g. intra-thoracic, intra-abdominal or intra-pelvic), open biopsy or significant traumatic injury or specific anti-cancer treatment ≤ 4 weeks prior to starting study drug, or patients who have had percutaneous biopsies or placement of vascular access device ≤ 1 week prior to starting study drug, or who have not recovered from side effects of such procedure or injury.
• Patients must not have clinically significant cardiac disease.
• Patients may not have chronic active liver disease or evidence of acute or chronic Hepatitis B Virus (HBV) or Hepatitis C (HCV).
• Patients may not have known diagnosis of human immunodeficiency virus (HIV) infection. Testing is not required in absence of clinical suspicion.
• Patients may not have known diagnosis of any condition (e.g. post-hematopoietic or solid organ transplant, pneumonitis, inflammatory bowel disease, etc.) that requires chronic immunosuppressive therapy. Usage of non-steroidal anti-inflammatory medications (NSAIDS) for the treatment of osteoarthritis and uric acid synthesis inhibitors for the treatment of gout are permitted.
• Patients with any serious and/or uncontrolled concurrent medical conditions (e.g. active or uncontrolled infection, uncontrolled diabetes) or psychiatric illness that could, in the investigator's opinion, cause unacceptable safety risks or potentially interfere with the completion of the treatment according to the protocol are not eligible.
• Patients may not have any live viral vaccine used for prevention of infectious diseases within 4 weeks prior to study drug(s).
• Patients unwilling or unable to comply with the protocol.

• Metastatic renal cell carcinoma with limited measurable extracranial metastases (Limited metastases, or oligometastases, defined as ≤3 sites of metastasis).
• Radiographic evidence of metastatic disease.
• For previous established metastatic status, repeat biopsy is not required.
• Prior surgery, or radiation is permitted.
• Subjects with brain metastasis as assessed by contrast MRI or contrast CT scans.
• Subjects with previous history of brain metastasis.
• Subjects received prior systemic therapy, except one line of immuno- or cytokine therapy (e.g. prior IL-2 or any single or combination of checkpoint inhibitors)
• Subjects with ≥3 unfavorable prognostic factors defined by Motzer et al. (1999), (KPS <80 %, Hgb < LLN, LDH >1.5x normal, corrected serum calcium >10mg/dl and absence of prior nephrectomy), Patients with 0, 1-2, and ≥3 factors had time to death of 20 months, 10 months and 4 months.
• Subjects with life expectancy < 6 months.
• Subjects may not be receiving any other investigational agents.
• Subjects must not be pregnant due to the potential for congenital abnormalities and the potential of this regimen to harm nursing infants.

• ELIGIBILITY CRITERIA FOR SCREENING BIOPSY (STEP 0)
• Women of childbearing potential must have a negative serum pregnancy test within 2 weeks prior to registration; patients that are pregnant or breast feeding are excluded; a female of childbearing potential is any woman, regardless of sexual orientation or whether they have undergone tubal ligation, who meets the following criteria:
• Has not undergone a hysterectomy or bilateral oophorectomy; or
• Has not been naturally postmenopausal for at least 24 consecutive months (i.e., has had menses at any time in the preceding 24 consecutive months)
• Women of childbearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 4 months after completion of study; should a woman become pregnant or suspect while she or her partner is participating in this study, she should inform her treating physician immediately
• Patients must have histologically documented solid tumors or histologically confirmed diagnosis of lymphoma or multiple myeloma requiring therapy and meet one of the following criteria:
• Patients must have progressed following at least one line of standard systemic therapy and there must not be other approval/standard therapy available that has been shown to prolong overall survival (i.e. in a randomized trial against another standard treatment or by comparison to historical controls); patients who cannot receive other standard therapy that has been shown to prolong overall survival due to medical issues will be eligible, if other eligibility criteria are met; if the patient is currently receiving therapy, the clinician must have assessed that the current therapy is no longer benefitting the patient prior to enrolling on MATCH, regardless of whether it is considered standard OR
• Patients for whose disease no standard treatment exists that has been shown to prolong overall survival
• NOTE: No other prior malignancy is allowed except for the following: adequately treated basal cell or squamous cell skin cancer; in situ cervical cancer; adequately treated stage I or II cancer from which the patient is currently in complete remission; any other cancer from which the patient has been disease-free for 5 years
• Patients must have measurable disease
• Patients must meet the criteria below and have received results from one of the designated outside laboratories indicating a "rare variant" that is an actionable Mutation of Interest (aMOI) for specific select subprotocols.
• The following requirements apply:
• The outside laboratory specifically notified the site that patient may be a potential candidate for MATCH due to a detected "rare variant"; the outside lab reports are NOT sufficient for this purpose
• NOTE: The content and format of these specific notifications for the Outside Assay process will vary depending on the designated outside lab in question, as they are each responsible for their own outreach efforts; it is strongly recommended that the designated outside laboratory be contacted to confirm the format and receipt of this notification prior to registering any patients to Step 0
• Patients with an applicable "rare variant" must be able to meet the eligibility criteria for the appropriate subprotocols within 4 weeks following notification of treatment assignment
• NOTE: The receipt of this notification (and the start of the associated deadline for Step 1 registration) may occur shortly after Step 0 registration, since these patients will not be submitting tissue for screening purposes; however, for certain "rare variant" arms, submission of archival tissue for central immunohistochemistry (IHC) testing may be required
• Registration to Step 0 must occur after stopping prior systemic anti-cancer therapy; there is no specific duration for which patients must be off treatment prior to registration to Step 0, as long as all eligibility criteria are met
• There is no particular window of time after notification of potential eligibility from an outside lab in which the patient must be registered to Step 0, but treatment slots will be assigned on a first come, first serve basis to those who do register to Step 0, and are not held for those notified of potential eligibility who do not register to Step 0
• Patients may have received other non-targeted, immunotherapy or targeted treatment between the prior genetic testing at the outside lab and registration to Step 0; the decision to stop such treatment in favor of participation in MATCH, if no further clinical benefit is expected, is per the treating physician's discretion; documentation of a lack of response to the prior treatment is not required in these cases
• NOTE: Other potential aMOIs that would be eligibility criteria for "NON RARE" arms, as determined by the designated laboratories, are not applicable for this process in MATCH
• NOTE: Tumor tissue for the confirmation of "rare variant" by the MATCH assay is to be submitted, preferably from the same time of collection as that evaluated by the designated outside laboratory
• Patient must not require the use of full dose coumarin-derivative anticoagulants such as warfarin; low molecular weight heparin is permitted for prophylactic or therapeutic use; factor X inhibitors are permitted
• NOTE: Warfarin may not be started while enrolled in the EAY131 study
• Stopping the anticoagulation for biopsy should be per site standard operating procedure (SOP)
• Patients must have Eastern Cooperative Oncology Group (ECOG) performance status =< 1 and a life expectancy of at least 3 months
• Patients must not currently be receiving any other investigational agents
• Patients must not have any uncontrolled intercurrent illness including, but not limited to:
• Symptomatic congestive heart failure (New York Heart Association [NYHA] classification of III/IV)
• Unstable angina pectoris or coronary angioplasty, or stenting within 6 months prior to registration to Step 0, 2, 4, 6
• Cardiac arrhythmia (ongoing cardiac dysrhythmias of National Cancer Institute [NCI] Common Terminology Criteria for Adverse Events [CTCAE] version [v]4 grade >= 2)
• Psychiatric illness/social situations that would limit compliance with study requirements
• Intra-cardiac defibrillators
• Known cardiac metastases
• Abnormal cardiac valve morphology (>= grade 2) documented by echocardiogram (ECHO) (as clinically indicated); (subjects with grade 1 abnormalities [i.e., mild regurgitation/stenosis] can be entered on study); subjects with moderate valvular thickening should not be entered on study
• NOTE: To receive an agent, patient must not have any uncontrolled intercurrent illness such as ongoing or active infection; patients with infections unlikely to be resolved within 2 weeks following screening should not be considered for the trial
• Patients must be able to swallow tablets or capsules; a patient with any gastrointestinal disease that would impair ability to swallow, retain, or absorb drug is not eligible
• Patients who are human immunodeficiency virus (HIV)-positive are eligible if:
• CD4+ cell count greater or equal to 250 cells/mm^3
• If patient is on antiretroviral therapy, there must be minimal interactions or overlapping toxicity of the antiretroviral therapy with the experimental cancer treatment; for experimental cancer therapeutics with CYP3A/4 interactions, protease inhibitor therapy is disallowed; suggested regimens to replace protease inhibitor therapy include dolutegravir given with tenofovir/emtricitabine; raltegravir given with tenofovir and emtricitabine; once daily combinations that use pharmacologic boosters may not be used
• No history of non-malignancy acquired immune deficiency syndrome (AIDS)-defining conditions other than historical low CD4+ cell counts
• Probable long-term survival with HIV if cancer were not present
• Any prior therapy, radiotherapy (except palliative radiation therapy of 30 gray [Gy] or less), or major surgery must have been completed >= 4 weeks prior to start of treatment; all adverse events due to prior therapy have resolved to a grade 1 or better (except alopecia and lymphopenia) by start of treatment; palliative radiation therapy must have been completed at least 2 weeks prior to start of treatment; the radiotherapy must not be to a lesion that is included as measurable disease
• NOTE: Prostate cancer patients may continue their luteinizing hormone-releasing hormone (LHRH) agonist
• NOTE: For patients entering the study via the original screening process, patients may receive non-protocol treatment after biopsy (if clinically indicated) until they receive notification of results; however, lack of response must be documented prior to registration to Step 1; new non-protocol treatment will NOT be permitted as intervening therapy after registration to Step 0; the only intervening treatment permitted is prior therapy that the patient already received prior to Step 0 registration; the decision to stop the intervening non-protocol treatment will be left up to the treating physician if patient has an aMOI; however, patients will need to be off such therapy for at least 4 weeks before receiving any MATCH protocol treatment
• NOTE: For patients entering the study via a designated outside laboratory, no intervening systemic non-protocol treatment is permitted after Step 0 registration; all other eligibility requirements still apply to these patients, including the washouts for prior therapy noted above in this section, the time restrictions outlined, and the eligibility criteria for the intended subprotocol
• Patients with brain metastases or primary brain tumors must have completed treatment, surgery or radiation therapy >= 4 weeks prior to start of treatment
• Patients must have discontinued steroids >= 1 week prior to registration to Step 0 and remain off steroids thereafter, except as permitted (see below); patients with glioblastoma (GBM) must have been on stable dose of steroids, or be off steroids, for one week prior to registration to treatment (Step 1, 3, 5, 7)
• NOTE: The following steroids are permitted (low dose steroid use is defined as prednisone 10 mg daily or less, or bioequivalent dose of other corticosteroid):
• Temporary steroid use: e.g. for computed tomography (CT) imaging in setting of contrast allergy
• Low dose steroid use for appetite
• Chronic inhaled steroid use
• Steroid injections for joint disease
• Stable dose of replacement steroid for adrenal insufficiency or low doses for non-malignant disease
• Topical steroid
• Steroids required to manage toxicity related to study treatment, as described in the subprotocols
• Steroids required as pre- or post-chemotherapy medication for acceptable intervening chemotherapy
• NOTE: Steroids must be completed alongside last dose of chemotherapy
• Leukocytes >= 3,000/mcL (within 2 weeks prior to screening step registration and within 4 weeks prior to treatment step registration)
• Absolute neutrophil count >= 1,500/mcL (within 2 weeks prior to screening step registration and within 4 weeks prior to treatment step registration)
• Platelets >= 100,000/mcL (within 2 weeks prior to screening step registration and within 4 weeks prior to treatment step registration)
• NOTE: Patients with documented bone marrow involvement by lymphoma are not required to meet the above hematologic parameters, but must have a platelet count of at least 75,000/mcL and neutrophil count of at least 1,000/mcL
• Total bilirubin =< 1.5 x institutional upper limit of normal (ULN) (unless documented Gilbert's syndrome, for which bilirubin =< 3 x institutional ULN is permitted) (within 2 weeks prior to screening step registration and within 4 weeks prior to treatment step registration)
• Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 2.5 x institutional ULN (up to 5 times ULN in presence of liver metastases) (within 2 weeks prior to screening step registration and within 4 weeks prior to treatment step registration)
• Creatinine clearance >= 45 mL/min/1.73 m^2 for patients with creatinine levels above institutional normal
• As defined by the Cockcroft-Gault equation (within 2 weeks prior to screening step registration and within 4 weeks prior to treatment step registration)
• Patients must have an electrocardiogram (ECG) within 8 weeks prior to registration to screening step and must meet the following cardiac criteria:
• Resting corrected QT interval (QTc) =< 480 msec
• NOTE: If the first recorded QTc exceeds 480 msec, two additional, consecutive ECGs are required and must result in a mean resting QTc =< 480 msec; it is recommended that there are 10-minute (+/- 5 minutes) breaks between the ECGs
• The following only need to be assessed if the mean QTc > 480 msec
• Check potassium and magnesium serum levels
• Correct any identified hypokalemia and/or hypomagnesemia and may repeat ECG to confirm exclusion of patient due to QTc
• For patients with heart rate (HR) 60-100 beats per minute (bpm), no manual read of QTc is required
• For patients with baseline HR < 60 or > 100 bpm, manual read of QT by trained personnel is required, with Fridericia correction applied to determine QTc
• Patient must not have hypokalemia (value < institutional lower limit of normal)
• No factors that increase the risk of QTc prolongation or risk of arrhythmic events such as heart failure, congenital long QT syndrome, family history of long QT syndrome or unexplained sudden death under 40 years of age or any concomitant medication known to prolong the QT interval
• NOTE: Patient must be taken off prohibited medication prior to registration to the screening step (Step 0, 2, 4, 6) and remain off these medications thereafter, unless permitted on a subprotocol for the management of treatment related toxicity; patient must be off the drug for at least 5 half-lives prior to registration to the treatment step (Step 1, 3, 5, 7); the medication half-life can be found in the package insert for Food and Drug Administration (FDA) approved drugs
• ELIGIBILITY CRITERIA FOR FIRST TREATMENT (STEP 1)
• If patients have been biopsied or submitted archived tumor tissue obtained within the last 6 months for assessment with the MATCH assays, patients may receive non-protocol treatment after biopsy/tissue submission (if clinically indicated) until they receive notification of results however, lack of response must be documented prior to registration to step 1; new non-protocol treatment will NOT be permitted as intervening therapy after registration to Step 0; for pat

1. Subjects 0 to <18 years at time of consent. 2. Subjects with hyperphosphataemia 3. Subjects ≥1 year with CKD Stages 4-5 defined by a glomerular filtration rate <30 mL/min/1.73 m2 or with CKD Stage 5D receiving adequate maintenance haemodialysis (HD) or peritoneal dialysis (PD) for at least 2 months prior to screening. 4. Subjects <1 year must have CKD. 5. Appropriate written informed consent and, where appropriate/required assent, have been provided. 1. Subjects with hypercalcaemia at screening 2. Subjects with intact parathyroid hormone (iPTH) levels >700 pg/mL at screening. 3. Subjects who are PB naïve who weigh <5 kg at screening. Subjects receiving stable doses of PBs who weigh <6 kg at screening 4. Subjects requiring feeding tube sizes ≤6 FR (French catheter scale). 5. Subjects with history of major gastrointestinal surgery or significant gastrointestinal disorders. 6. Subjects with hypocalcaemia (serum total corrected calcium <1.9 mmol/L; <7.6 mg/dL) at screening. 7. Subject is pregnant (e.g., positive human chorionic gonadotropin test) or breast feeding. 8. Subject has a significant medical condition(s)

• Histological confirmation of RCC with a clear-cell component
• Metastatic (AJCC Stage IV) RCC
• Prior adjuvant or neoadjuvant therapy for localized or locally advanced RCC is allowed provided recurrence occurred = or > 6 months after the last dose of the adjuvant or neoadjuvant therapy
• Any number of prior systemic treatment regimen in the advanced/metastatic setting is allowed (cytokine, anti-angiogenic, mTOR inhibitor or clinical trial) including previously untreated patients
• Karnofsky Performance Status (KPS) of at least 70%
• Life expectancy of at least 3 months
• At least 2 metastatic sites of which at least 1 must be measurable as per RECIST 1.1
• Archival Formalin-fixed paraffin-embedded (FFPE) tumor tissue must be available for correlative studies (Note: Fine Needle Aspiration [FNA] and bone metastases samples are not acceptable for submission)
• Patients with favorable, intermediate and poor risk categories will be eligible for the study. Patients must be categorized according to favorable versus intermediate/poor risk status at registration. International Metastatic RCC Database Consortium (IMDC) must be used to determine prognostic factors
• Subjects with previously treated brain or CNS metastases are eligible provided that the subject has recovered from any acute effects of radiotherapy and is not requiring steroids, and any whole brain radiation therapy was completed at least 4 weeks prior to study drug administration, or any stereotactic radiosurgery was completed at least 2 weeks prior to study drug administration. Liver metastases will not be included as part of the radiated lesions to be treated. Medical History and Concurrent Diseases:
• Prior treatment with an anti-PD-1, anti-PD-L1, anti-PD-L2, anti-CD137, or anti-CTLA-4 antibody, or any other antibody or drug specifically targeting T-cell co-stimulation or checkpoint pathways. Prior treatment with HD IL-2 is allowed.
• Any active or recent history of a known or suspected autoimmune disease or recent history of a syndrome that required systemic corticosteroids (> 10 mg daily prednisone equivalent) or immunosuppressive medications except for syndromes which would not be expected to recur in the absence of an external trigger. Subjects with vitiligo or type I diabetes mellitus or residual hypothyroidism due to autoimmune thyroiditis only requiring hormone replacement are permitted to enroll. Patients with psoriasis not requiring active, systemic treatment are allowed.
• Any condition requiring systemic treatment with corticosteroids (> 10 mg daily prednisone equivalents) or other immunosuppressive medications within 14 days prior to first dose of study drug. Inhaled steroids and adrenal replacement steroid doses up to 10 mg daily prednisone equivalents are permitted in the absence of active autoimmune disease
• Uncontrolled adrenal insufficiency
• Requirement for anti-coagulation with Coumadin, low molecular weight heparin and anti-thrombin inhibitors will be accepted if anticoagulation has been stable for at least 4 weeks and no recent history of prior bleeding complications.
• Prior malignancy active within the previous 3 years except for locally curable cancers that have been apparently cured such as basal or squamous cell skin cancer, superficial bladder cancer, or carcinoma in situ of the cervix, breast or low risk Gleason 6 prostate cancer
• Known history of testing positive for human immunodeficiency virus (HIV) or known acquired immunodeficiency syndrome (AIDS)
• Any positive test for hepatitis B or hepatitis C virus indicating acute or chronic infection
• Known medical condition (eg, a condition associated with diarrhea or acute diverticulitis) that, in the investigator's opinion, would increase the risk associated with study participation or study drug administration or interfere with the interpretation of safety results
• Major surgery (eg, nephrectomy) less than 28 days prior to the first dose of study drug
• Anti-cancer therapy less than 14 days prior to the first dose of study drug or palliative, focal radiation therapy less than 14 days prior to the first dose of study drug
• Presence of any toxicities attributed to prior anti-cancer therapy, other than alopecia, that have not resolved to Grade 1 (NCI CTCAE v4) or baseline before administration of study drug Physical and Laboratory Test Findings:
• Any of the following laboratory test findings:
• WBC < 2,000/mm3
• Neutrophils < 1,500/mm3
• Platelets < 100,000/mm3
• AST or ALT > 3 x ULN (> 5 x ULN if liver metastases are present)
• Total Bilirubin > 1.5 x ULN (except subjects with Gilbert Syndrome, who can have total bilirubin < 3.0 mg/dL)
• Serum creatinine > 1.5 x upper limit of normal (ULN) or creatinine clearance < 40 mL/min (measured or calculated by Cockroft-Gault formula) Allergies and Adverse Drug Reaction:
• History of severe hypersensitivity reaction to any monoclonal antibody or study drug components Other
• Prisoners or subject who are involuntarily incarcerated
• Not suitable for SBRT treatment
• Subjects who are compulsorily detained for treatment of either a psychiatric or physical illness

Key
• Advanced solid tumor for which, in the opinion of the Investigator, no other standard therapy offers greater benefit.
• A solid tumor diagnosis in the setting of: 1. a documented NTRK fusion and a clinical history of relapse following a response to a prior TRK inhibitor 2. a documented NTRK fusion unresponsive to a prior TRK inhibitor 3. a documented NTRK fusion and a clinical history of intolerance to a prior TRK inhibitor
• NTRK gene fusions will be identified via a CLIA certified (or equivalent) laboratory. Exception: Patients with Infantile Fibrosarcoma (IFS) and congenital mesoblastic nephroma (CMN) may be enrolled based on ETV6+ FISH test without identifying NTRK3
• Performance Status: Eastern Cooperative Oncology Group (ECOG) score ≤ 3 (age ≥16) or Lansky Performance Score (LPS) ≥40% (age<16). If enrolled with primary CNS tumor to be assessed by RANO, Karnofsky Performance Status (KPS) (age ≥16) or LPS (age<16) ≥ 50%
• Life expectancy > 4 weeks
• Adequate hematologic, hepatic and renal function.
• Patients with stable CNS primary tumor, brain metastases, or treated spinal cord compression are eligible if neurological symptoms and steroid use (if applicable) have been stable for 7 days prior to the first dose of LOXO-195
• Ability to receive study drug orally or by enteral administration Key
• Required treatment with certain strong CYP3A4 inhibitors or inducers.
• Clinically significant active cardiovascular disease or history of myocardial infarction within 3 months prior to planned start of LOXO-195 or prolongation of the QT interval corrected (QTcF) > 480 msec within the past 6 months
• Major surgery within 7 days of enrollment
• Uncontrolled systemic bacterial, fungal or viral infection
• Pregnancy or lactation.
• Known hypersensitivity to any of the components of LOXO-195 or Ora-Sweet® SF and OraOlus, for patients receiving liquid suspension

• Metastatic renal cell carcinoma with systemic therapy (oligo-progression defined as ≤3 sites of metastasis).
• Radio-graphic evidence of metastatic disease.
• Subjects with ≥3 unfavorable prognostic factors defined by IMDC (International Metastatic Renal Cell Carcinoma).
• Subjects with history of or new brain metastasis.

• Patients are eligible under ONE of the following criteria:
• Patients must have histologically confirmed rare cancer and must be able to submit specimens; NOTE: Subsequent to site's Institutional Review Board (IRB) approval of revision 3, patients are NOT required to participate in EAY131 "National Cancer Institute (NCI)-Molecular Analysis for Therapy Choice (MATCH)" to register to this study
• FOR PATIENTS ENROLLED IN EAY131 "NCI-MATCH" PRIOR TO EAY131 ADDENDUM 10 ONLY: Patients must have histologically confirmed rare cancer that did not have a match to a molecularly-guided therapy on EAY131 "NCI-MATCH" protocol or who are off protocol treatment on EAY131, "NCI-MATCH" and have no further molecularly-matched treatment recommendations per EAY131, "NCI-MATCH" or who are otherwise unable to receive EAY131, "NCI-MATCH" therapy
• Patients that do not qualify for one of the histologic cohorts may be considered for registration in the "Not Otherwise Categorized" Rare Tumors cohort with confirmation of at least one of the study chairs via email
• Patients that are determined to have a rare cancer with unknown primary site are eligible under cohort #32 (tumor of unknown primary [cancer of unknown primary; CuP]), provided that there is histologic documentation of metastatic malignancy with no discernible primary site identified from histopathologic review, physical exam and associated cross-sectional imaging of the chest, abdomen, and pelvis
• Patients must have progressed following at least one line of standard systemic therapy and there must not be other approved/standard therapy available that has been shown to prolong overall survival (i.e. in a randomized trial against another standard treatment or by comparison to historical controls); patients who cannot receive other standard therapy that has been shown to prolonged survival due to medical issues will be eligible, if other eligibility criteria are met; OR
• Patients for whose disease no standard treatment exists that has been shown to prolong overall survival
• Patients must have a diagnostic quality computed tomography (CT) scan or magnetic resonance imaging (MRI), performed within 28 days prior to registration, which demonstrates measurable disease, as defined in RECIST v. 1.1; all disease must be assessed and documented on the S1609 Baseline Tumor Assessment Form
• No other prior malignancy is allowed except for the following:
• Adequately managed stage I or II cancer from which the patient is currently in complete remission
• Any other cancer from which the patient has been disease free for one year
• Adequately managed stage I or II follicular thyroid or prostate cancer is also eligible, wherein patient is not required to be in complete remission
• Patients may have received prior anti-CTLA4 or other anti-PD-1/anti-PD-L1 therapy, not both, provided that it is completed >= 4 weeks prior to registration
• Patients who had prior grade 3 or higher immune-related adverse event (e.g. pneumonitis, hepatitis, colitis, endocrinopathy) with prior immunotherapy (e.g. cancer vaccine, cytokine, etc.) are not eligible
• Patients with clinically controlled thyroiditis or pituitary disorders on stable replacement therapy are eligible
• Patients are not eligible if they have had or are planned for solid organ transplant; patients who have received allogeneic hematopoietic stem cell transplant are eligible if:
• The transplant occurred at least 90 days prior to registration,
• Patient has no prior acute graft versus host disease (GVHD), and
• Within 48 hours of registration, patient demonstrates at least 90% engraftment, defined as: absolute neutrophil count (ANC) >= 500 mcl, measured over 3 consecutive days or 1 day with an ANC >= 1,000 mcl, or platelets >= 50,000 mcl measured, wherein the patient did not receive any platelet transfusions within 7 days prior to laboratory assessment
• Patients with autoimmune disease who are otherwise eligible must not have received steroid and immunosuppressive therapy within 28 days prior to registration
• Patients with brain metastases or primary brain tumors must have completed treatment, surgery or radiation therapy >= 28 days prior to registration and have stable disease at time of registration; metastatic brain parenchymal disease must have been treated and patient must be off steroids for 7 days prior to registration; patients must have a CT or MRI scan of the brain to evaluate for central nervous system (CNS) disease within 42 days prior to registration
• Patients must not currently be receiving any other investigational agents or any other systemic anti-cancer therapy (including radiation, excluding RANKL inhibitors and bisphosphonates); in event patient recently received any other systemic anti-cancer therapy, patient must be off therapy at least 7 days prior to registration and any therapy-induced toxicity must have recovered to =< grade 1, except alopecia and =< grade 2 neuropathy which are allowed; any planned radiation therapy must be completed before enrollment onto S1609
• Patients must not have prior history of allergy or known hypersensitivity to nivolumab or ipilimumab
• Patients must have a Zubrod performance status of 0-2
• Within 28 days prior to registration: ANC >= 1,000/mcL
• Within 28 days prior to registration: Platelets >= 75,000/mcL
• Within 28 days prior to registration: Hemoglobin >= 8 g/dL
• Within 28 days prior to registration: Total bilirubin =< 2.0 x institutional upper limit of normal (IULN) or for documented/suspected Gilbert's disease, total bilirubin =< 3.0 x IULN
• Within 28 days prior to registration: Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) both =< 3 x IULN
• Within 28 days prior to registration: Serum creatinine =< 2.0 x IULN
• Within 28 days prior to registration: Creatinine clearance (CrCl) >= 50 mL/min., as estimated by the Cockcroft and Gault formula; estimated creatinine clearance is based on actual body weight
• Patients must have adequate thyroid function, as evidenced by either thyroid-stimulating hormone (TSH) or, free thyroxine (T4) serum tests demonstrating values within the normal range, within 28 days prior to registration; Note: TSH, with reflex T4 is allowable if per institutional standard; otherwise, both TSH and free-T4 must be obtained
• Patients must have adequate adrenal axis function, as evidenced by adrenocorticotropic hormone (ACTH) values within the institutional normal ranges OR cortisol levels within institutional normal ranges (ante meridiem [AM] cortisol preferred), within 28 days prior to registration
• Females of childbearing potential must have negative serum or urine pregnancy test 7 days prior to registration and agree to use birth control throughout study and for 23 weeks after completion of protocol therapy; patients must not be pregnant or nursing; women/men of reproductive potential must have agreed to use an effective contraceptive method; a woman is considered to be of "reproductive potential" if she has had menses at any time in the preceding 12 consecutive months; in addition to routine contraceptive methods, "effective contraception" also includes heterosexual celibacy and surgery intended to prevent pregnancy (or with a side-effect of pregnancy prevention) defined as a hysterectomy, bilateral oophorectomy or bilateral tubal ligation; however, if at any point a previously celibate patient chooses to become heterosexually active during the time period for use of contraceptive measures outlined in the protocol, he/she is responsible for beginning contraceptive measures
• Men of reproductive potential must have agreed to use birth control throughout the study and for 31 weeks after completion of protocol therapy; in addition to routine contraceptive methods, "effective contraception" also includes heterosexual celibacy and surgery intended to prevent pregnancy (vasectomy); however, if at any point a previously celibate patient chooses to become heterosexually active during the time period for use of contraceptive measures outlined in the protocol, he is responsible for beginning contraceptive measures
• Patients must not have known active hepatitis B virus (HBV) or hepatitis virus (HCV) infection at time of registration; patients with HBV or HCV that have an undetectable viral load, or in the opinion of the treating investigator is well-controlled, are eligible
• Patients who are known to be human immunodeficiency virus (HIV)-positive at registration are eligible at the time of registration: 1. Cluster of differentiation (CD)4+ cell count greater or equal to 250 cells/mm^3 2. If patient is on antiretroviral therapy, there must be minimal interactions or overlapping toxicity of the antiretroviral therapy with the experimental cancer treatment; once daily combinations that use pharmacologic boosters may not be used 3. No history of non-malignancy acquired immunodeficiency syndrome (AIDS)-defining conditions other than historical low CD4+ cell counts
• Patients must not have active autoimmune disease that has required systemic treatment in past 2 years (i.e., with use of disease modifying agents, immunosuppressive drugs, or corticosteroids with doses higher than prednisone 10mg or equivalent); replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment; autoimmune diseases include but are not limited to autoimmune hepatitis, inflammatory bowel disease (including ulcerative colitis and Chron's disease), as well as symptomatic disease (e.g. rheumatoid arthritis, systemic progressive sclerosis [scleroderma], systemic lupus erythematosus, autoimmune vasculitis [e.g., Wegener's Granulomatosis]); CNS or motor neuropathy considered of autoimmune origin (e.g., Guillain-Barre syndrome and myasthenia gravis, multiple sclerosis or glomerulonephritis); vitiligo, alopecia, hypothyroidism on stable doses of thyroid replacement therapy, psoriasis not requiring systemic therapy within the past 2 years is permitted; short-term steroid premedication for contrast allergy is permitted
• Patients must not have any uncontrolled intercurrent illness including (not limited to): symptomatic congestive heart failure (CHF) (New York Heart Association [NYHA] III/IV), unstable angina pectoris or coronary angioplasty, or stenting within 24 weeks prior to registration, unstable cardiac arrhythmia (ongoing cardiac dysrhythmias of NCI Common Terminology Criteria for Adverse Events [CTCAE] version [v] 4 grade >= 2), known psychiatric illness that would limit study compliance, intra-cardiac defibrillators, known cardiac metastases, or abnormal cardiac valve morphology (>= grade 3)
• Note: Patients with history of CHF or patients who are deemed at risk because of underlying cardiovascular disease or exposure to cardiotoxic drugs should have an electrocardiogram (EKG) and echocardiogram (ECHO), as clinically indicated, at baseline and at the start of each cycle; patients who have evidence at baseline (or subsequently) of CHF, myocardial infarction (MI), cardiomyopathy, or myositis cardiac evaluation (NYHA I/II) should have additional consult by a cardiologist, including review of EKG, creatine phosphokinase (CPK), troponin, echocardiogram, as clinically indicated
• Patients must have amylase or lipase within =< 1.5 x IULN without symptoms of pancreatitis at registration, within 28 days prior to registration
• Patients must not have symptomatic interstitial lung disease or pneumonitis
• Patients must have fully recovered from any adverse effects of major surgery (to =< grade 1) at least 14 days prior to registration

1. Aged ≥ 12 years 2. At least 1 symptomatic stone event (passage or procedural intervention) within 3 years prior to enrollment 3. Low 24‐hr urine volume 1. ≥18 years old: <1.8 L/day 2. <18 years old: <20 ml/Kg/day up to 1.8L/day 4. Able to provide informed consent (parental permission for children) 5. Owning and willing to use a smartphone or other device (e.g., tablet) compatible with the study‐provided wireless enabled "smart" bottle 1. Spinal cord injury 2. Currently undergoing active treatment for cancer except basal cell skin cancer, or patients with a history of cancer who completed their initial therapy <1 year before screening. 3. Known infectious (struvite), monogenic or other causes of stone disease for which therapies are likely to significantly alter course of stone disease 1. Cystinuria 2. Primary hyperoxaluria 3. Primary xanthinuria 4. Primary hyperparathyroidism 5. Sarcoidosis 6. Medullary sponge kidney 4. History or presence of hyponatremia (serum sodium <130 mmol/L) or hypo‐osmolality (serum osmolality <275 mosm/kg) 5. Study participants with comorbidities that preclude high fluid intake or prior surgery precluding high fluid intake or leading to GI fluid losses 1. History of or current Crohn's disease, ulcerative colitis, short gut syndrome (e.g. ileostomy, bowel bypass surgery to treat obesity, small bowel resection), chronic diarrhea, or GI tract ostomy. 2. History of malabsorptive (e.g., Roux‐en‐Y gastric bypass) or restrictive (e.g., sleeve gastrectomy) bariatric surgery procedures 3. Congestive heart failure i. NYHA class II or greater, and/or ii. Hospital admission in the past year for heart failure d. Lung disease with a home oxygen requirement e. Chronic kidney disease (eGFR <30 ml/min/1.7 m2 over a 3‐month period) i. For adults (age ≥18), we will use the CKD‐Epi equation which requires the measurement of serum creatinine only. ii. For children (age <18), we will use the bedside Schwartz (CKiD) formula. f. Nephrotic syndrome (>3.5 grams of protein per 24 hours) g. Cirrhosis with ascites 6. Women who are currently pregnant or planning pregnancy within 2 years. 7. Renal transplant recipient 8. Bedridden study participants (ECOG ≥ 3) 9. Uncorrected anatomical obstruction of the urinary tract 10. History of recurrent urinary tract infections (> 3 UTI/year proven by urine culture) 11. Exclusions due to medication use: 1. Chronic use of lithium 2. Long‐term glucocorticoid use (> 7.5 mg prednisone daily for > 30 days prior to enrollment) 3. Intake of narcotic medication on a daily basis for >30 days prior to enrollment 4. Supplemental Vitamin C (> 1 g daily) 12. Individuals with stones that have developed after the initiation of medications that are strongly associated with USD such as carbonic anhydrase inhibitors (acetazolamide, topiramate, zonisamide), high dose vitamin C (> 1 g daily), high dose calcium supplementation (> 1,200 mg daily) AND who have discontinued or plan to discontinue these medications. 13. Individuals taking medications that may crystallize in the urine (guaifenesin, sulfonamides, triamterene, and the protease inhibitors indinavir and nelfinavir) AND who have discontinued or plan to discontinue these medications. Note: Individuals who are on long‐term medications that increase the risk of stone disease, who cannot stop these medications due to other chronic conditions (e.g., HIV) and who may reduce their risk for stone recurrence through increased fluid intake, will be eligible to participate in the trial. Examples of these medications include: 1. Carbonic anhydrase inhibitors (acetazolamide, topiramate, zonisamide) 2. Medications that may crystallize in the urine (guaifenesin, sulfonamides, triamterene, and the protease inhibitors indinavir and nelfinavir). 14. Study participants <2 yrs life expectancy 15. Non‐English Speakers 16. History of Syndrome of Inappropriate Antidiuretic Hormone Secretion (SIADH) 17. Anatomical urologic abnormalities including ileal conduits, horseshoe kidney, megaureter or solitary kidney. 18. Psychiatric conditions impairing compliance with the study 19. Vulnerable population (prisoner and/or cognitive impairment that the investigator feels will impact the study participant's ability to participate in the protocol) 20. Individual who will be unable to participate in the protocol in the judgment of the investigator.

1. Orthotopic heart transplantation 2. Age < 21 years at time of transplant 3. Stable immunosuppression at the time of randomization with no contraindication to everolimus, tacrolimus, or mycophenolate mofetil 4. Planned follow-up at a study site for the 30 month duration of the study. 5. Subject or legal adult representative capable of providing informed consent (in general, assent will be sought for children aged 12 years or older). 1. Multi-organ transplant (e.g. heart-lung or heart-liver). 2. Known hypersensitivity to everolimus, sirolimus, tacrolimus or mycophenolate mofetil (MMF), or to components of the drug products. 3. Patients on maintenance corticosteroid therapy exceeding a dose equivalent of prednisone 0.1 mg/kg/day at randomization. 4. High-risk for rejection defined as active rejection, recurrent (≥ 2 episodes of grade 2R rejection) cellular rejection, recurrent rejection (≥ 2 episodes of any grade) with hemodynamic compromise, steroid-resistant rejection or unresolved antibody-mediated rejection during the first 6 months post-heart transplant 5. Graft dysfunction (LVEF <40% or wedge pressure >22 mmHg or cardiac index <2.2 L/min/m2) 6. Stage 4 or 5 CKD (eGFR <30 ml/min/1.73 m2) or moderate proteinuria (urine protein to urine creatinine ratio >0.5 mg/mg). 7. Active infection requiring hospitalization or treatment dose medical therapy. 8. Patients with ongoing wound healing problems, clinically significant wound infection requiring continued therapy or other severe surgical complication in the opinion of the Site Principal Investigator. 9. Fasting Serum Cholesterol ≥300 mg/dL OR greater than or equal to 7.75 mmol/L, AND fasting triglycerides ≥2.5x the upper limit of normal (ULN). Note: In case one or both of these thresholds are exceeded, the patient can only be included after initiation of appropriate lipid lowering medication, and reduction of serum cholesterol and triglyceride levels to below exclusion ranges is confirmed. 10. Uncontrolled diabetes mellitus. 11. Diagnosis of post-transplant lymphoproliferative disorder (PTLD) during the first 6 months post-heart transplant. 12. History of non-adherence to medical regimens. 13. Patients who are treated with drugs that are strong inducers or inhibitors of cytochrome P450 3A4 (CYP3A4) and cannot discontinue the treatment 14. Patients who are pregnant or breast-feeding or intend to get pregnant during the study period.

1. Cytologically or histologically and radiologically confirmed solid tumor that is inoperable, locally advanced, metastatic, or recurrent:
• Dose-Escalation Stage:
• Subjects with UC (including renal pelvis, ureter, bladder, urethra) after prior platinum-based therapy, or
• Subjects with RCC (clear cell, non-clear cell histology) with or without prior systemic anticancer therapy
• Expansion Stage:
• Inoperable locally advanced or metastatic solid tumor (UC, RCC, CRPC, NSCLC, TNBC, OC, EC, HCC, GC/GEJC, CRC, H&N cancer, and DTC as outlined above) 2. Measurable disease per RECIST 1.1 as determined by the investigator. 3. Tumor tissue material available (archival or recent tumor biopsy) 4. Recovery to baseline or ≤ Grade 1 CTCAE v4 from toxicities related to any prior treatments, unless AE(s) are clinically nonsignificant and/or stable on supportive therapy. 5. Age eighteen years or older on the day of consent. 6. Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1. 7. Adequate organ and marrow function. 8. Sexually active fertile subjects and their partners must agree to use medically accepted methods of contraception. 9. Female subjects of childbearing potential must not be pregnant at screening. 1. Prior treatment with cabozantinib or immune checkpoint inhibitors including anti-CTLA-4, anti-PD-1, anti-PD-L1, or anti-PD-L2 therapy except in Expansion Cohorts 5, 7,19 and 20. Other restrictions regarding prior therapy may apply. 2. Known brain metastases or cranial epidural disease unless adequately treated and stable for at least 4 weeks before first dose of study treatment. 3. Concomitant anticoagulation with oral anticoagulants. 4. Subject is receiving systemic steroid therapy or any other form of immunosuppressive therapy within 2 weeks prior to first dose of study treatment. 5. Administration of a live, attenuated vaccine within 30 days before first dose of study treatment. 6. The subject has uncontrolled, significant intercurrent or recent illness, including, but not limited to, an active or history of autoimmune disease or immune deficiency; idiopathic pulmonary fibrosis, organizing pneumonia, pneumonitis; active infection requiring systemic treatment, infection with human immunodeficiency virus (HIV), AIDS-related illness, acute or chronic hepatitis B or C infection, positive test for tuberculosis, moderate to severe hepatic impairment (Child-Pugh B or C). 7. Pregnant or lactating females. 8. Previously identified allergy or hypersensitivity to components of the study treatment formulations. 9. Diagnosis of another malignancy within 2 years before first dose of study treatment.

• Postmenopausal: no menses for >1 year
• Minimum age: 48 years
• Symptomatic apical and/or anterior vaginal wall prolapse, stage 2 or greater
• No estrogen replacement within the last month (may come off current treatment, i.e. wash out, to join the study)
• Medically fit for elective surgery
• Physically able to apply/insert the study drug
• Available for clinic follow-up for minimum 1yr
• Concurrent use of steroid creams for other indications (e.g. lichen sclerosis)
• BMI >35 kg/m2
• Recent history (within last month) of vaginal infection or vaginitis
• Contraindications to estrogen therapy (e.g. spontaneous DVT, stroke, breast or endometrial/ hormone-responsive cancer, genital bleeding of unknown cause)
• History of connective tissue disease
• Any oral or transdermal estrogen, SERM, or other medication impacting vaginal milieu
• History of vaginal irradiation
• Allergy to Premarin or its constituents
• Prior apical repair or use of mesh for prolapse repair
• Current tobacco use

Inclusion Criteria
• CKD Inclusion Criteria (present at least ≥ 3 months apart) 1. There will be two or more Estimated Glomerular Filtration Rate (eGFRs) calculations less than 60ml/minute (corrected for BSA) or 2. Two or more positive tests for albuminuria and/or proteinuria Albuminuria/proteinuria can be defined by quantitative criteria with albumin/creatinine ratio greater than 30mg/g, urine protein creatinine ratio greater than 200mg/g or positive dipstick with protein detection (adjusted for urinary concentration/specific gravity).
• Diabetes Inclusion Criteria Only patients with type 2 diabetes will be enrolled in this study. 1. Random blood glucose greater than 200mg/dL 2. Hemoglobin A1C greater than 6.5% 3. Use of hypoglycemic agents or 4. Type 2 diabetes included in problem list
• Hypertension Inclusion Criteria 1. Systolic blood pressure greater than 140 mmHg on two different occasions at least one week apart 2. Diastolic blood pressure greater than 90 on two occasions at least more than one week apart 3. Use of antihypertensive agents except thiazide diuretics or 4. Hypertension included in problem list
• Exclusion criteria will be minimal in this pragmatic trial. The collaborative model of care will not be implemented in patients younger than 18 years or older than 85 years of age or patients who have CKD stage 5/End Stage Renal Disease(ESRD.
• Primary care practitioners have the option of not implementing the intervention on any of their patients if they believe benefit to be minimal or risk too high due to patient comorbidities

Inclusion Criteria
• Age ≥ 18 years.
• Renal mass ≤ 3cm
• Biopsy proven Renal neoplasm
• All histology of renal cancers are included including oncocytoma
• Growth of renal mass >4mm in radiographic scans or >2mm in two different scans must be demonstrated within a one year period.
• Ability to understand and the willingness to sign a written informed consent.
• No clinical evidence of metastatic disease
• Subjects may not have received any treatment for the renal mass before such as RFA or cryoablation.
• Subjects must not have received previous abdominal radiation
• Subjects must be able to undergo either an MRI or administration of contrast agent for CT.
• Subjects unable to undergo either of the imaging study will be excluded.
• Subjects enrolled on the study and then became unable to undergo either of the imaging study will be either replaced or decided on an individual basis by the investigator (please see section 5.5)
• Subjects must not be pregnant during the course of SABR.

• Has histologically confirmed diagnosis of RCC with clear cell component with or without sarcomatoid features.
• Female participants of childbearing potential must be willing to use an adequate method of contraception, for the course of the study through 120 days after the last dose of study treatment.
• Male participants of childbearing potential must agree to use an adequate method of contraception, starting with the first dose of study treatment through 120 days after the last dose of study treatment.
• Has intermediate-high risk, high risk, or M1 NED RCC as defined by the following pathological tumor-node-metastasis and Fuhrman grading status: 1. Intermediate-high risk RCC: pT2, Grade 4 or sarcomatoid, N0, M0; pT3, Any Grade, N0, M0 2. High risk RCC: pT4, Any Grade N0, M0; pT, Any stage, Any Grade, N+, M0 3. M1 NED RCC participants who present not only with the primary kidney tumor but also solid, isolated, soft tissue metastases that can be completely resected at one of the following: the time of nephrectomy (synchronous) or, ≤1 year from nephrectomy (metachronous).
• Has received no prior systemic therapy for advanced RCC.
• Has undergone a partial nephroprotective or radical complete nephrectomy (and complete resection of solid, isolated, soft tissue metastatic lesion(s) in M1 NED participants) with negative surgical margins.
• Must have undergone a nephrectomy and/or metastasectomy ≥28 days prior to signing informed consent and ≤12 weeks prior to randomization.
• Must be tumor-free as assessed by the Investigator and validated by either computed tomography (CT) or magnetic resonance imaging (MRI) scan of the brain and chest, abdomen, and pelvis and a bone scan ≤28 days from randomization.
• Must have provided adequate tissue per the following: Nephrectomy only: tissue from nephrectomy (required); Synchronous M1 NED: tissue from nephrectomy (required) AND, metastasectomy tissue (if available); Metachronous M1 NED: tissue from metastasectomy (required) AND, nephrectomy tissue (if available).
• Has an Eastern Cooperative Oncology Group Performance Status (ECOG PS) score of 0 or 1.
• Has adequate organ function.
• Has had major surgery, other than nephrectomy and/or resection of pre-existing metastases for M1 NED participants, within 12 weeks prior to randomization.
• Has received prior radiotherapy for RCC.
• Has pre-existing brain or bone metastatic lesions.
• Has residual thrombus post nephrectomy in the vena renalis or vena cava.
• Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior the first dose of study treatment.
• Has an active autoimmune disease that has required systemic treatment in past 2 years (i.e., with use of disease modifying agents, corticosteroids, or immunosuppressive drugs). Replacement therapy is allowed.
• Has a known additional malignancy that is progressing or required active treatment ≤3 years ago. Exceptions include early-stage cancers (carcinoma in situ or Stage 1) treated with curative intent, basal cell carcinoma of the skin, squamous cell carcinoma of the skin, in situ cervical cancer, in situ prostate cancer, or in situ breast cancer that has undergone potentially curative therapy.
• Has a history of (non-infectious) pneumonitis that required steroids or has current pneumonitis.
• Has an active infection requiring systemic therapy.
• Has a history of, or is currently on, dialysis.
• Has a known history of human immunodeficiency virus (HIV) infection.
• Has known active hepatitis B or hepatitis C virus infection.
• Has a known history of active tuberculosis (Bacillus tuberculosis).
• Has had a prior solid organ transplant.
• Has severe hypersensitivity (≥ Grade 3) to pembrolizumab and/or any of its excipients.
• Is pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the study, starting with the Screening visit through 120 days after the last dose of study treatment.
• Has received prior therapy with an anti-programmed cell death protein 1 (anti-PD-1), anti-programmed cell death-ligand 1 (anti-PD-L1), or anti-PD-L2 agent or with an agent directed to another co-inhibitory T-cell receptor (i.e., cytotoxic T-lymphocyte-associated protein 4 [CTLA-4], OX-40, CD137 [tumor necrosis factor receptor superfamily member 9 (TNFRSF9)]) or has previously participated in a Merck pembrolizumab (MK-3475) clinical trial.
• Has received prior anticancer therapy, monoclonal antibody, chemotherapy, or an investigational agent or device within 4 weeks or 5 half-lives (whichever is longer) before first dose of study treatment or not recovered (i.e., must be ≤ Grade 1 or at Baseline) from AEs due to previously administered agents.
• Has received a live vaccine within 30 days prior to the first dose of study treatment.
• Is currently participating in or has participated in a study of an investigational agent or has used an investigational device within 4 weeks prior to the first dose of study treatment.

• Patients must be enrolled on ANBL00B1 or APEC14B1 prior to enrollment on ANBL1531
• Patients must have a diagnosis of neuroblastoma or ganglioneuroblastoma (nodular) verified by tumor pathology analysis or demonstration of clumps of tumor cells in bone marrow with elevated urinary catecholamine metabolites; the following disease groups are eligible:
• Patients with International Neuroblastoma Risk Group (INRG) stage M disease are eligible if found to have either of the following features:
• MYCN amplification (> 4-fold increase in MYCN signals as compared to reference signals), regardless of age or additional biologic features; OR
• Age > 547 days regardless of biologic features
• Patients with INRG stage MS disease with MYCN amplification
• Patients with INRG stage L2 disease with MYCN amplification
• Patients > 547 days of age initially diagnosed with INRG stage L1, L2 or MS disease who progressed to Stage M without prior chemotherapy may enroll within 4 weeks of progression to Stage M
• Patients >= 365 days of age initially diagnosed with MYCN amplified INRG stage L1 disease who progress to Stage M without systemic therapy may enroll within 4 weeks of progression to stage M
• Patients initially recognized to have high-risk disease must have had no prior systemic therapy (other than topotecan/cyclophosphamide initiated on an emergent basis and within allowed timing); patients observed or treated with a single cycle of chemotherapy per a low or intermediate risk neuroblastoma regimen (e.g., as per ANBL0531, ANBL1232 or similar) for what initially appeared to be non-high risk disease but subsequently found to meet the criteria will also be eligible; patients who receive localized emergency radiation to sites of life-threatening or function-threatening disease prior to or immediately after establishment of the definitive diagnosis will be eligible
• Creatinine clearance or radioisotope glomerular filtration rate (GFR) >= 70 mL/min/1.73 m^2 or a serum creatinine based on age/sex as follows:
• 1 to < 2 years: male = 0.6; female = 0.6
• 2 to < 6 years: male = 0.8; female = 0.8
• 6 to < 10 years: male = 1; female = 1
• 10 to < 13 years: male = 1.2; female = 1.2
• 13 to < 16 years: male = 1.5; female = 1.4
• >= 16 years: male = 1.7; female = 1.4
• Total bilirubin =< 1.5 x upper limit of normal (ULN) for age, and
• Serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) < 10 x ULN; for the purposes of this study, ULN for SGPT (ALT) is 45
• Shortening fraction of >= 27% by echocardiogram, or ejection fraction of > 50% by echocardiogram or radionuclide angiogram
• No known contraindication to peripheral blood stem cell (PBSC) collection; examples of contraindications might be a weight or size less than the collecting institution finds feasible, or a physical condition that would limit the ability of the child to undergo apheresis catheter placement (if necessary) and/or the apheresis procedure
• Patients with INRG stage L2 tumors without amplification of MYCN regardless of tumor histology (may meet criteria for may meet criteria for high risk classification but are not eligible for this trial)
• Patients with bone marrow failure syndromes
• Patients for whom targeted radiopharmaceutical therapy would be contraindicated due to underlying medical disorders
• Female patients who are pregnant; a pregnancy test is required for female patients of childbearing potential
• Lactating females who plan to breastfeed their infants
• Sexually active patients of reproductive potential who have not agreed to use an effective contraceptive method for the duration of their study participation

• Radiographic evidence of renal cancer with IVC tumor thrombus
• Tumor thrombus must be ≥ level II
• Patient eligible for SABR to the IVC tumor thrombus as decided by the treating radiation oncologist
• Patient eligible for IVC tumor thrombectomy as decided by the treating urologist
• Any number of metastatic disease is allowed in the Pilot phase of the trial
• For the Phase II, metastatic patients will be allowed only if all sites of metastasis has been treated either surgically or radio-surgically
• Age ≥ 18 years.
• Performance status ECOG 0-2
• Any serum Albumin is allowed, but ≥ 3.4 g/dL is strongly encouraged
• Any serum AST is allowed but serum AST ≤ 34 IU/L is strongly encouraged
• Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 90 days following completion of therapy. Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately.
• Ability to understand and the willingness to sign a written informed consent.
• Subjects must be able to undergo either a contrast enhanced MRI or CT.
• Subjects who have had radiotherapy to a target within 3 cm of the IVC tumor thrombus.
• Subjects may have received any other investigational agents or chemotherapy as long as they are eligible for SABR and surgery
• Subjects with brain metastases should be excluded from this clinical trial unless all the metastasis are treated surgically or radio-surgically
• Subjects with a history of pulmonary embolism is excluded
• Subjects with a history of pulmonary hypertension is excluded
• Subjects must not be pregnant due to the potential for congenital abnormalities.
• Surgery or SABR of metastatic site concurrently or at any time is allowed
• Contraindication for contrast-enhanced MRI as defined by the standard operating procedures of the Department of Radiology at UT Southwestern. Briefly, these include medically unstable; cardiac pacemaker; intracranial clips, metal implants; metal in the eyes; pregnant or nursing; claustrophobia; and impairment of the renal function with estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73m2.

• Histologically- or cytologically-confirmed diagnosis of locally advanced or metastatic solid tumor that harbors an NTRK1/2/3, ROS1, or ALK gene rearrangement
•Note: Patients diagnosed with anaplastic large cell lymphoma (ALCL) harboring a gene rearrangement of interest may be eligible provided they meet all other inclusion/exclusion criteria
• For patients enrolled via local molecular testing, an archival or fresh tumor tissue (unless medically contraindicated) is required to be submitted for independent central molecular testing at Ignyta's CLIA laboratory post-enrollment
• Measurable or evaluable disease
• Patients with CNS involvement, including leptomeningeal carcinomatosis, which is either asymptomatic or previously-treated and controlled, are allowed
• Prior anticancer therapy is allowed (excluding approved or investigational Trk, ROS1, or ALK inhibitors in patients who have tumors that harbor those respective gene rearrangements)
•Note: prior treatment with crizotinib is permitted only in ALK- or ROS1-rearranged NSCLC patients presenting with CNS-only progression. Other ALK inhibitors are prohibited.
• At least 2 weeks or 5 half-lives, whichever is shorter, must have elapsed after prior chemotherapy or small molecule targeted therapy
• At least 4 weeks must have elapsed since completion of antibody-directed therapy
• Prior radiotherapy is allowed if more than 14 days have elapsed since the end of treatment
• Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2 and minimum life expectancy of 4 weeks
• Adequate organ function as defined per protocol
• Ability to swallow entrectinib intact
• Other protocol specified criteria
• Current participation in another therapeutic clinical trial
• Prior treatment with approved or investigational Trk, ROS1, or ALK inhibitors in patients who have tumors that harbor those respective gene rearrangements
•Note: prior treatment with crizotinib is permitted only in ALK- or ROS1-rearranged NSCLC patients presenting with CNS-only progression. Other ALK inhibitors are prohibited.
• History of other previous cancer that would interfere with the determination of safety or efficacy
• Incomplete recovery from any surgery
• History of non-pharmacologically induced prolonged QTc interval
• History of additional risk factors for torsade de pointes
• Peripheral neuropathy Grade ≥ 2
• Known active infections
• Active gastrointestinal disease or other malabsorption syndromes
• Known interstitial lung disease, interstitial fibrosis, or history of tyrosine kinase inhibitor-induced pneumonitis
• Other protocol specified criteria

1. Provide written informed consent agreeing to all study procedures, before any study- specific procedures are done. 2. Male and female subjects 18 to 65 years of age, inclusive. 3. Subjects currently being evaluated for new or recurrent LN with a SOC kidney biopsy planned OR being evaluated for IgA nephropathy and with a SOC kidney biopsy planned. 4. Patients with LN must meet American College of Rheumatology (ACR) or Systemic Lupus Collaborating Clinics (SLICC) criteria for Systemic Lupus Erythematosus (SLE). 5. Subjects with a life expectancy >6 months. 1. Participation in another investigational study during same time period. 2. Contraindication to receiving a GBCA. 3. More than 2 previous lifetime exposures to a GBCA. 4. Any contraindication to MRI, including metal implants, claustrophobia or morbid obesity. 5. Acute or chronic severe renal insufficiency (glomerular filtration rate [GFR] <40 mL per minute per 1.73 m2). 6. Subject requiring dialysis. 7. Presence of pre-existing renal disease unrelated to SLE or IgA nephropathy, respectively. 8. Acute renal insufficiency of any severity caused by the hepato-renal syndrome. 9. Previous or pre-existing nephrogenic systemic fibrosis. 10. History of clinically significant anti-phospholipid syndrome. 11. Chronic liver function impairment, indicated by liver function tests (aspartate aminotransferase [AST], alanine aminotransferase [ALT]) >2-fold upper limit of normal. 12. Platelet count <50,000/μL. 13. Hemoglobin <8.0 g/dL. 14. History of or presence of central nervous system (CNS) disease such as active lupus cerebritis or multiple sclerosis that might compromise blood brain barrier function. 15. Infection that is clinically relevant, particularly hepatitis B virus (HBV), hepatitis C virus (HCV) and/or human immunodeficiency virus (HIV). 16. Pregnant or nursing females, or females not using effective contraception. 17. Inability or unwillingness to return to the research site clinic for study visits at baseline and at 6 months.

• Upper age limit of =< 18 years of age for medullary thyroid carcinoma (MTC), renal cell carcinoma (RCC) and hepatocellular carcinoma (HCC)
• Patients must have a body surface area >= 0.35 m^2
• Patients must have recurrent or refractory disease, or newly diagnosed disease with no known curative therapy or therapy proven to prolong survival with an acceptable quality of life; patients must have had histologic verification of one of the malignancies listed below at original diagnosis or at relapse:
• Ewing sarcoma
• Rhabdomyosarcoma (RMS)
• Non-rhabdomyosarcoma soft tissue sarcomas (STS) including microphthalmia transcription factor associated STS (alveolar soft part sarcoma [ASPS] and clear cell sarcoma [CCS])
• Osteosarcoma
• Wilms tumor
• Rare tumors
• Medullary thyroid carcinoma (MTC)
• Renal cell carcinoma (RCC)
• Hepatocellular carcinoma (HCC)
• Hepatoblastoma
• Adrenocortical carcinoma
• Pediatric solid tumors (including central nervous system [CNS] tumors) with known molecular alterations in the targets of XL184 (i.e., MET amplification, overexpression, activating mutation, MET translocation, MET exon skipping mutations, activating RET mutations, RET rearrangement, overexpression or activation of AXL); documentation of the alteration from a Clinical Laboratory Improvement Act (CLIA) certified laboratory will be required
• Note: Documentation of any known tumor molecular alterations and RET mutation status for patients with MTC (germline) must be uploaded via the RAVE system
• Patients must have radiographically measurable disease; measurable disease is defined as the presence of at least one lesion on magnetic resonance imaging (MRI) or computed tomography (CT) scan that can be accurately measured with the longest diameter a minimum of 10 mm in at least one dimension (CT scan slice thickness no greater than 5 mm)
• Note: The following do NOT qualify as measurable disease:
• Malignant fluid collections (e.g., ascites, pleural effusions)
• Bone marrow infiltration
• Lesions only detected by nuclear medicine studies (e.g., bone, gallium or positron emission tomography [PET] scans)
• Elevated tumor markers in plasma or cerebrospinal fluid (CSF)
• Previously radiated lesions that have not demonstrated clear progression post radiation
• Leptomeningeal lesions that do not meet the measurement parameters noted above
• Patients must have a Lansky or Karnofsky performance status score of >= 50, corresponding to Eastern Cooperative Oncology Group (ECOG) categories 0, 1 or 2; use Karnofsky for patients > 16 years of age and Lansky for patients =< 16 years of age; patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score
• Patients must have fully recovered from the acute toxic effects of all prior chemotherapy, immunotherapy, or radiotherapy prior to entering this study
• Patients with solid tumors must not have received myelosuppressive chemotherapy within 3 weeks of enrollment onto this study (6 weeks if prior nitrosourea)
• At least 7 days must have elapsed since the completion of therapy with a growth factor. At least 14 days must have elapsed after receiving pegfilgrastim
• Anti-cancer agents not known to be myelosuppressive (e.g. not associated with reduced platelet or absolute neutrophil count [ANC] counts): >= 7 days after the last dose of agent
• Antibodies: >= 21 days must have elapsed from infusion of last dose of antibody, and toxicity related to prior antibody therapy must be recovered to grade =< 1
• >= 2 weeks must have elapsed since local palliative radiation therapy (XRT) (small port); >= 6 weeks must have elapsed since treatment with therapeutic doses of M-Iodobenzylguanidine (MIBG); >= 3 months must have elapsed if prior craniospinal XRT was received, if >= 50% of the pelvis was irradiated, or if total-body irradiation (TBI) was received; >= 6 weeks must have elapsed if other substantial bone marrow irradiation was given
• Subjects should not have any clinically relevant ongoing complications from prior radiation therapy (i.e., radiation esophagitis or other inflammation of the viscera)
• No evidence of active graft versus (vs.) host disease and >= 2 months must have elapsed since transplant
• Not previously received XL184 or another MET/HGF inhibitor (tivantinib or crizotinib); there are no limits on number of prior therapeutic regimens; patients who have been treated with prior VEGF pathway, or RET inhibitors (except XL184) may be eligible
• Peripheral absolute neutrophil count (ANC) >= 1000/uL for patients with solid tumors without bone marrow involvement
• Platelet count >= 100,000/uL (transfusion independent, defined as not receiving platelet transfusions within a 7 day period prior to enrollment) for patients with solid tumors without bone marrow involvement
• Hemoglobin >= 8.0 g/dL (may receive red blood cell [RBC] transfusions) for patients with solid tumors without bone marrow involvement
• Peripheral absolute neutrophil count (ANC) >= 750/uL for patients with solid tumors and known bone marrow metastatic disease
• Platelet count >= 50,000/uL for patients with solid tumors and known bone marrow metastatic disease
• Hemoglobin >= 8.0 g/dL for patients with solid tumors and known bone marrow metastatic disease
• Transfusions are permitted to meet both the platelet and hemoglobin criteria; patients must not be known to be refractory to red blood cell or platelet transfusions
• Creatinine clearance or radioisotope glomerular filtration rate (GFR) >= 70 mL/min/1.73 m^2 or a serum creatinine based on age/gender as follows:
• 2 to < 6 years of age
• Male and female: 0.8 (maximum serum creatinine [mg/dL])
• 6 to < 10 years of age
• Male and female: 1 (maximum serum creatinine [mg/dL])
• 10 to < 13 years of age
• Male and female: 1.2 (maximum serum creatinine [mg/dL])
• 13 to < 16 years of age
• Male 1.5 (maximum serum creatinine [mg/dL])
• Female: 1.4 (maximum serum creatinine [mg/dL])
• >= 16 years of age
• Male: 1.7 (maximum serum creatinine [mg/dL])
• Female: 1.4 (maximum serum creatinine [mg/dL])
• Urine protein: =< 30 mg/dl in urinalysis or =< 1+ on dipstick, unless quantitative protein is < 1000 mg in a 24 hour (h) urine sample
• Total bilirubin =< 1.5 x upper limit of normal (ULN) for age
• Serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) =< 135 U/L (3 x ULN) (for the purpose of this study, the ULN for SGPT is 45 U/L)
• Serum albumin >= 2.8 g/dL
• No history of congenital prolonged corrected QT (QTc) syndrome, New York Heart Association (NYHA) class III or IV congestive heart failure (CHF)
• No clinically significant cardiac arrhythmias, stroke or myocardial infarction within 6 months prior to enrollment
• QTc =< 480 msec; Note: Patients with grade 1 prolonged QTc (450- 480 msec) at the time of study enrollment should have correctable causes of prolonged QTc addressed if possible (i.e., electrolytes, medications)
• Patients with a known seizure disorder who are receiving non-enzyme inducing anticonvulsants and have well-controlled seizures may be enrolled
• CNS toxicity =< grade 2 with the exception of decreased tendon reflex (DTR); any grade of DTR is eligible
• A blood pressure (BP) =< the 95th percentile for age, height, and gender for pediatric patients < 18 years old and =< 140/90 mmHg for patients >= 18 years old; patients should not be receiving medication for treatment of hypertension (except patients with Wilms tumor and RCC who may be eligible if on stable doses of no more than one anti-hypertensive medication with a baseline BP =< ULN for pediatric patients and =< 140/90 for adult patients); please note that 3 serial blood pressures should be obtained and averaged to determine baseline BP
• International normalized ratio (INR) =< 1.5
• Serum amylase =< 1.5 ULN
• Serum lipase =< 1.5 ULN
• Pregnant or breast-feeding women will not be entered on this study; pregnancy tests must be obtained in girls who are post-menarchal; males or females of reproductive potential may not participate unless they have agreed to use two methods of birth control- a medically accepted barrier method of contraceptive method (e.g., male or female condom) and a second effective method of birth control-during protocol therapy and for at least 4 months after the last dose of XL184; abstinence is an acceptable method of birth control
• Growth factors that support platelet or white cell number or function must not have been administered within the 7 days prior to enrollment (14 days if pegfilgrastim)
• Patients requiring corticosteroids who have not been on a stable or decreasing dose of corticosteroid for the 7 days prior to enrollment are not eligible; if used to modify immune adverse events related to prior therapy, >= 14 days must have elapsed since last dose of corticosteroid
• Previous treatment with XL184 (cabozantinib) or another MET/HGF inhibitor (tivantinib, crizotinib)
• Patients who are currently receiving another investigational drug are not eligible
• Patients who are currently receiving other anti-cancer agents are not eligible
• Patients who are receiving cyclosporine, tacrolimus or other agents to prevent either graft-versus-host disease post bone marrow transplant or organ rejection post-transplant are not eligible for this trial
• Patients must not be receiving any of the following potent CYP3A4 inducers or inhibitors: erythromycin, clarithromycin, ketoconazole, azithromycin, itraconazole, grapefruit juice or St. John's wort
• Concomitant anticoagulation with oral anticoagulants (e.g., warfarin, direct thrombin, and Factor Xa inhibitors) or platelet inhibitors (e.g., clopidogrel) are prohibited
• Note: Low-dose aspirin for cardioprotection (per local applicable guidelines) and low dose, low molecular weight heparins (LMWH) are permitted; anticoagulation with therapeutic doses of LMWH is allowed in subjects without radiographic evidence of brain metastasis, who are on a stable dose of LMWH for at least 6 weeks before first dose of study treatment, and who have had no complications from a thromboembolic event or the anticoagulation regimen
• Patients must not have received enzyme-inducing anticonvulsants within 14 days prior to enrollment
• Patients who are receiving drugs that prolong QTc are not eligible
• Patients who are unable to swallow intact tablets are not eligible
• Patients who have an uncontrolled infection are not eligible
• Patients who in the opinion of the investigator may not be able to comply with the safety monitoring requirements of the study are not eligible
• Patients with active bleeding are not eligible; specifically, no clinically significant gastrointestinal (GI) bleeding, GI perforation, intra-abdominal abscess or fistula for 6 months prior to enrollment, no hemoptysis or other signs of pulmonary hemorrhage for 3 months prior to enrollment; patients with evidence of an acute intracranial or intratumoral hemorrhage on CT or MRI are not eligible (patients with evidence of resolving hemorrhage will be eligible); in patients with CNS tumors, an MRI with ECHO gradient sequences would be required to exclude presence of petechial hemorrhages
• Patients who have had or are planning to have the following invasive procedures are not eligible:
• Major surgical procedure, laparoscopic procedure, or open biopsy within 28 days prior to enrollment
• Central line placement or subcutaneous port placement is not considered major surgery but must be placed at least 3 days prior to enrollment for external lines (e.g., Hickman or Broviac catheter, peripherally inserted central catheter [PICC]) and at least 7 days prior to enrollment for a subcutaneous port
• Core biopsy within 7 days prior to enrollment
• Fine needle aspirate within 7 days prior to enrollment
• Surgical or other wounds must be adequately healed prior to enrollment
• NOTE: For purposes of this study, bone marrow aspirate and biopsy are not considered surgical procedures and therefore are permitted within 14 days prior to start of protocol therapy
• Patients who have had significant traumatic injury within 28 days prior to enrollment are not eligible
• Patients with any medical or surgical conditions that would interfere with gastrointestinal absorption of the study drug are not eligible

• ELIGIBILITY CRITERIA FOR ENROLLMENT ONTO APEC1621SC: Patients with recurrent or refractory solid tumors, including non-Hodgkin lymphomas, histiocytoses (e.g. langerhans cell histiocytosis [LCH], juvenile xanthogranuloma [JXG], histiocytic sarcoma), and central nervous system (CNS) tumors are eligible; patients must have had histologic verification of malignancy at original diagnosis or relapse except in patients with intrinsic brain stem tumors, optic pathway gliomas, or patients with pineal tumors and elevations of cerebrospinal fluid (CSF) or serum tumor markers including alpha-fetoprotein or beta-human chorionic gonadotropin (HCG); please note: Patients with Hodgkin lymphoma are not eligible
• ELIGIBILITY CRITERIA FOR ENROLLMENT ONTO APEC1621SC: Patients must have an formalin-fixed paraffin-embedded (FFPE) tumor sample available for MATCH study testing from a biopsy or surgery that was performed at any point after initial tumor recurrence/progression, or be planned to have a procedure to obtain such a sample that is considered to be of potential benefit by the treating clinicians; a tumor sample from a clinically performed diagnostic (pre-treatment) biopsy will be acceptable for enrollment onto Pediatric MATCH only for children with high-grade gliomas of the brainstem (diffuse intrinsic pontine gliomas) or thalamus
• Please note: Samples that have been decalcified using standardly utilized acid-based decalcification methods are not generally suitable for MATCH study testing; the nucleic acids will have been degraded in the decalcification process
• ELIGIBILITY CRITERIA FOR ENROLLMENT ONTO APEC1621SC: Karnofsky >= 50% for patients > 16 years of age and Lansky >= 50 for patients =< 16 years of age); note: neurologic deficits in patients with CNS tumors must have been stable for at least 7 days prior to study enrollment; patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: NOTE: patient does not need to meet all subprotocol criteria at time of enrollment onto the APEC1621SC screening protocol, but will need to meet all criteria prior to enrollment on any assigned treatment subprotocol. Patients must be enrolled onto a subprotocol within 12 weeks (84 days) of treatment assignment
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: Karnofsky >= 50% for patients > 16 years of age and Lansky >= 50 for patients =< 16 years of age); Note: neurologic deficits in patients with CNS tumors must have been stable for at least 7 days prior to study enrollment; patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: At the time of treatment with subprotocol specified therapy, the patients must have radiographically measurable disease; patients with neuroblastoma who do not have measurable disease but have iobenguane (MIBG) positive (+) evaluable are eligible; measurable disease in patients with CNS involvement is defined as tumor that is measurable in two perpendicular diameters on magnetic resonance imaging (MRI) and visible on more than one slice
• Note: The following do not qualify as measurable disease:
• Malignant fluid collections (e.g., ascites, pleural effusions)
• Bone marrow infiltration except that detected by MIBG scan for neuroblastoma
• Lesions only detected by nuclear medicine studies (e.g., bone, gallium or positron emission tomography [PET] scans) except as noted for neuroblastoma
• Elevated tumor markers in plasma or CSF
• Previously radiated lesions that have not demonstrated clear progression post radiation
• Leptomeningeal lesions that do not meet the measurement requirements for Response Evaluation Criteria in Solid Tumors (RECIST) 1.1
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: At the time of enrollment onto a subprotocol, the following general criteria for initiation of therapy will be required:
• Patients must have fully recovered from the acute toxic effects of all prior anticancer therapy and must meet the following minimum duration from prior anticancer directed therapy prior to enrollment to the subprotocol; if after the required timeframe, the numerical eligibility criteria are met, e.g. blood count criteria, the patient is considered to have recovered adequately
• Cytotoxic chemotherapy or other anticancer agents known to be myelosuppressive: for agents not listed, the duration of this interval must be discussed with the study chair and the study-assigned research coordinator prior to enrollment >= 21 days after the last dose of cytotoxic or myelosuppressive chemotherapy (42 days if prior nitrosourea)
• Anticancer agents not known to be myelosuppressive (e.g. not associated with reduced platelet or absolute neutrophil counts [ANC]): >= 7 days after the last dose of agent; for agents not listed, the duration of this interval must be discussed with the study chair and the study-assigned research coordinator prior to enrollment
• Antibodies: >= 21 days must have elapsed from infusion of last dose of antibody, and toxicity related to prior antibody therapy must be recovered to grade =< 1
• Corticosteroids: If used to modify immune adverse events related to prior therapy, >= 14 days must have elapsed since last dose of corticosteroid
• Hematopoietic growth factors: >= 14 days after the last dose of a long-acting growth factor (e.g. Neulasta) or 7 days for short-acting growth factor; for agents that have known adverse events occurring beyond 7 days after administration, this period must be extended beyond the time during which adverse events are known to occur; the duration of this interval must be discussed with the study chair and the study-assigned research coordinator
• Interleukins, interferons and cytokines (other than hematopoietic growth factors): >= 21 days after the completion of interleukins, interferon or cytokines (other than hematopoietic growth factors)
• Stem cell infusions (with or without total-body irradiation [TBI]):
• Allogeneic (non-autologous) bone marrow or stem cell transplant, or any stem cell infusion including donor lymphocyte infusion (DLI) or boost infusion: >= 84 days after infusion and no evidence of graft versus host disease (GVHD)
• Autologous stem cell infusion including boost infusion: >= 42 days
• Cellular therapy: >= 42 days after the completion of any type of cellular therapy (e.g. modified T cells, NK cells, dendritic cells, etc.)
• X-ray therapy (XRT)/External Beam Irradiation including Protons: >= 14 days after local XRT; >= 150 days after TBI, craniospinal XRT or if radiation to >= 50% of the pelvis; >= 42 days if other substantial bone marrow (BM) radiation; note: radiation may not be delivered to "measurable disease" tumor site(s) being used to follow response to subprotocol treatment
• Radiopharmaceutical therapy (e.g., radiolabeled antibody, 131I-MIBG): >= 42 days after systemically administered radiopharmaceutical therapy
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: For patients with solid tumors without known bone marrow involvement:
• Peripheral absolute neutrophil count (ANC) >= 1000/mm^3
• Platelet count >= 100,000/mm^3 (transfusion independent, defined as not receiving platelet transfusions for at least 7 days prior to enrollment
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: Patients with known bone marrow metastatic disease will be eligible for study provided they meet the blood counts (may receive transfusions provided they are not known to be refractory to red cell or platelet transfusions); these patients will not be evaluable for hematologic toxicity
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: Creatinine clearance or radioisotope glomerular filtration rate (GFR) >= 70ml/min/1.73 m^2 or a serum creatinine based on age/gender as follows:
• Age: 1 to < 2 years; maximum serum creatinine (mg/dL): male 0.6; female 0.6
• Age: 2 to < 6 years; maximum serum creatinine (mg/dL): male 0.8; female 0.8
• Age: 6 to < 10 years; maximum serum creatinine (mg/dL): male 1; female 1
• Age: 10 to < 13 years; maximum serum creatinine (mg/dL): male 1.2; female 1.2
• Age: 13 to < 16 years; maximum serum creatinine (mg/dL): male 1.5; female 1.4
• Age: >= 16 years; maximum serum creatinine (mg/dL): male 1.7; female 1.4
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: Bilirubin (sum of conjugated + unconjugated) =< 1.5 x upper limit of normal (ULN) for age
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: Serum glutamate pyruvate transaminase (SGPT) (alanine transferase [ALT]) =< 135 U/L (for the purpose of this study, the ULN for SGPT is 45 U/L)
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: Patients must be able to swallow intact capsules/tablets, unless otherwise specified in the subprotocol to which they are assigned
• GENERAL INCLUSION CRITERIA FOR SUBPROTOCOLS: Agent specific limitations on prior therapy will be included with specific treatment subprotocols
• GENERAL EXCLUSION CRITERIA FOR SUBPROTOCOLS: Pregnant or breast-feeding women will not be entered on this study; pregnancy tests must be obtained in females who are post-menarchal; males or females of reproductive potential may not participate unless they have agreed to use an effective contraceptive method
• GENERAL EXCLUSION CRITERIA FOR SUBPROTOCOLS: Concomitant medications
• Corticosteroids: at the time of consent and enrollment to regimen specific subprotocols, patients receiving corticosteroids who have not been on a stable or decreasing dose of corticosteroid for at least 7 days prior to enrollment to the subprotocol will not be eligible; if used to modify immune adverse events related to prior therapy, >= 14 days must have elapsed since last dose of corticosteroid
• Investigational drugs: patients must meet criteria for prior therapy at the time of consent and enrollment to a subprotocol; other investigational agents may not be administered to patients while they are receiving study drug as part of a subprotocol
• Anticancer agents: patients must meet criteria for prior therapy at the time of consent and enrollment to a subprotocol; other investigational agents may not be administered to patients while they are receiving study drug as part of a subprotocol
• Anti-GVHD agents post-transplant: patients who are receiving cyclosporine, tacrolimus or other agents to prevent graft-versus-host disease post bone marrow transplant are not eligible
• GENERAL EXCLUSION CRITERIA FOR SUBPROTOCOLS: Patients who have an uncontrolled infection are not eligible
• GENERAL EXCLUSION CRITERIA FOR SUBPROTOCOLS: Patients who have had a prior solid organ transplant are not eligible
• GENERAL EXCLUSION CRITERIA FOR SUBPROTOCOLS: Additional agent specific criteria will be included with specific treatment subprotocols

• ELIGIBILITY CRITERIA FOR PREREGISTRATION (STEP 0):
• Patients with a renal mass consistent with a clinical stage >= T2Nx renal cell carcinoma (RCC) or TanyN+ RCC for which radical or partial nephrectomy is planned
• Patients must have no clinical or radiological evidence of distant metastases (M0) unless the presumed M1 disease can be resected/definitively treated (e.g., thermal ablation, stereotactic radiation) at the same time or within a 12 week window from the date of the initial procedure such that the patient is considered "no evidence of disease" (M1 NED)
• Permitted sites of oligo-metastases: lung, adrenal, nodes, pancreas, soft tissue or skin; liver or bone metastases are not permitted
• No more than 3 metastases are permitted and all must be able to be removed or definitively treated within 12 weeks of the primary tumor resection
• If histological confirmation of RCC has not been done within 12 months prior to pre-registration (Step 0), patient must be willing to undergo a core biopsy for this purpose if randomized to Arm H
• NOTE: This can be a (1) standard of care diagnostic biopsy or (2) a research biopsy following assignment to Arm H or a planned metastasectomy before or after randomization; if the biopsy performed following pre-registration (Step 0) clearly demonstrates a benign condition, oncocytoma or a different type of cancer that is not RCC, the patient is not eligible for registration (Step 1); a non-diagnostic biopsy is considered a good faith effort and does not need to be repeated unless deemed clinically necessary by the treating investigator
• NOTE: Patients randomized to Arm O (Observation) are permitted to register to Step 1 (Arm B) immediately following pre-registration assignment to Arm O, regardless of whether or not they have had a standard of care diagnostic biopsy
• No prior systemic or local anti-cancer therapy for the current RCC is permitted; examples and exception include:
• Partial nephrectomy for prior RCC
• Metastasectomy for RCC unless performed to render patient NED within 6 months of the current diagnosis
• Radiation therapy to the renal bed or any distant metastatic sites, unless administered to render patient NED within 6 months of the current diagnosis
• Current or past antineoplastic systemic therapies for RCC: i.e., chemotherapy, hormonal therapy, immunotherapy, or standard or investigational agents for treatment of RCC
• Prior treatment with an anti-PD-1, anti-PD-L1, anti-PD-L2, anti-CD137, or anti-CTLA-4 antibody, or any other antibody or drug specifically targeting T-cell co-stimulation or checkpoint pathways
• Eastern Cooperative Oncology Group (ECOG) performance status: 0 or 1
• Patient must have no prior history of RCC that was resected with curative intent within the past 5 years
• Patients with a prior RCC that was treated > 5 years before, are eligible if the current tumor is consistent with a new primary in the opinion of the treating investigator
• Patients with bilateral synchronous RCCs are eligible if they can be resected or definitively treated at the same time or within a 12 week window from time of initial nephrectomy (partial or radical) or procedure and maintain adequate residual renal function; the patient is not eligible if both kidneys are completely removed and subsequent hemodialysis is required
• Permitted forms of local therapy for second tumor:
• Partial or radical nephrectomy
• If tumor is =< 3cm: thermal ablation (e.g., radiofrequency ablation, cryoablation or stereotactic radiosurgery)
• Patients cannot have concurrent malignancies, with the following exceptions:
• Adequately treated basal cell or squamous cell skin cancer
• In situ cervical cancer
• A history of superficial Ta urothelial cancer is permitted (as long as not currently undergoing treatment) whereas T1 or greater disease is excluded if < 3 years from diagnosis; concurrent persistent disease is not permitted
• Adequately treated stage I or II cancer from which the patient is currently in complete remission
• Any other cancer and stage from which the patient has been disease-free for at least 3 years prior to the time of pre-registration and as long as they are not receiving any current treatment (e.g. adjuvant or maintenance systemic or local therapy)
• Concurrent low risk prostate cancer on active surveillance
• No active known or suspected autoimmune disease; the following autoimmune disorders are permitted: patients with vitiligo, type I diabetes mellitus, controlled/stable hypothyroidism due to autoimmune or non-autoimmune conditions (hormone replacement is allowed), psoriasis not requiring systemic treatment, or other conditions not expected to recur
• No ongoing condition requiring systemic treatment with either corticosteroids (> 10 mg daily prednisone equivalent) or other immunosuppressive medications with the exceptions outlined below; no treatment with other immunosuppressive agents within 14 days prior to the first dose of study drug with the following exceptions:
• Topical, ocular, intra-articular, intranasal, inhaled steroids and adrenal replacement steroid doses > 10 mg daily prednisone or the equivalent are permitted in the absence of active autoimmune disease
• A brief (less than 3 weeks) course of corticosteroids (any amount) for prophylaxis (for example: contrast dye allergy) or for treatment of non-autoimmune conditions (for example: nausea, delayed-type hypersensitivity reaction caused by a contact allergen) is permitted
• No uncontrolled adrenal insufficiency
• No known chronic active liver disease or evidence of acute or chronic hepatitis B virus (HBV) or hepatitis C virus (HCV)
• No serious intercurrent illness, including ongoing or active infection requiring parenteral antibodies
• No known evidence of human immunodeficiency virus (HIV) infection, since the effects of nivolumab on anti-retroviral therapy have not been studied
• No known medical condition (e.g. a condition associated with uncontrolled diarrhea such as ulcerative colitis or acute diverticulitis) that, in the investigator's opinion, would increase the risk associated with study participation or interfere with the interpretation of safety results
• No major surgery within 28 days prior to randomization
• No patients currently enrolled in other clinical trials testing a therapeutic intervention
• No history of severe hypersensitivity to a monoclonal antibody
• Ability to understand and the willingness to sign a written informed consent document
• ELIGIBILITY CRITERIA FOR RANDOMIZATION (STEP 1):
• Patients must meet all Step 0 eligibility criteria at the time of their registration to Step 1
• In patients randomized to Arm H, core tumor biopsy must demonstrate RCC of any histology, including sarcomatoid, unclassified, or "unknown histology" (if preoperative biopsy was uninformative)
• NOTE: A non-diagnostic biopsy is considered a good faith effort and does not need to be repeated unless deemed clinically necessary by the treating investigator
• Women must not be pregnant or breast-feeding, as the effects of nivolumab on the developing human fetus or in the nursing infant are unknown; all females of childbearing potential must have a blood test or urine study within 2 weeks prior to registration to rule out pregnancy; a female of childbearing potential is any woman, regardless of sexual orientation or whether they have undergone tubal ligation, who meets the following criteria: 1) has achieved menarche at some point 2) has not undergone a hysterectomy or bilateral oophorectomy; or 2) has not been naturally postmenopausal for at least 24 consecutive months (i.e., has had menses at any time in the preceding 24 consecutive months)
• The effects of nivolumab on the developing human fetus are unknown; for this reason women of childbearing potential and sexually active males must be strongly advised to use accepted and effective methods of contraception, or to abstain from sexual intercourse for the duration of their participation in the study; local laws and regulations may require use of alternative and /or additional contraceptive methods; women of childbearing potential should use adequate methods to avoid pregnancy for 23 weeks after the last dose of nivolumab; sexually active males should use adequate methods to avoid pregnancy for 31 weeks after the last dose of nivolumab
• Women of childbearing potential (WOCBP) and males who are sexually active with WOCBP must use accepted and effective method(s) of contraception, or to abstain from sexual intercourse for the duration of their participation in the study; women of childbearing potential must use adequate methods to avoid pregnancy for 23 weeks after the last dose of nivolumab; sexually active males must use adequate methods to avoid pregnancy for 31 weeks after the last dose of nivolumab
• White blood cells >= 2000/uL (within 8 weeks of registration)
• Absolute neutrophil count (ANC) >= 1,500/mm^3 (within 8 weeks of registration)
• Platelet count >= 100,000/mm^3 (within 8 weeks of registration)
• Hemoglobin >= 9.0 g/dL (within 8 weeks of registration)
• Serum creatinine =< 1.5 x upper limit of normal (ULN) (except subjects with Gilbert syndrome, who can have total bilirubin < 3.0 x ULN) (within 8 weeks of registration)
• Total bilirubin =< 1.5 x ULN (except subjects with Gilbert syndrome, who can have total bilirubin < 3.0 x ULN) (within 8 weeks of registration)
• Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =< 2.5 x ULN (within 8 weeks of registration)

• Age greater than 18 years
• End Stage Renal Disease on Maintenance Hemodialysis
• Hypertension defined as systolic blood pressure > 140 mmHg pre-dialysis or >130 mmHg post dialysis
• Hemodialysis Vintage < 1 month
• Pregnancy
• Nadir Systolic Blood Pressure < 95 mmHg
• Pre or Post dialysis systolic blood pressure > 180 mmHg
• Decrease in systolic blood pressure >60 mmHg from pre to post dialysis
• Ultrafiltration rate >13 mL/kg/hr
• Peridialytic Midodrine Use
• Intradialytic Clonidine use
• Documented Antihypertensive Medication Non-adherence Bioimpedance will not be peformed on patients with
• amputated arms or legs
• cardiac defibrillator or pacemaker
• presence of metal prostheses

Aim 1
• Hypocitraturic CaP stone formers
• urine citrate <320mg/d
• elevated pH as 24-hr urine pH above 6.40
• >21 years Aim 2
• Hypercalciuric CaP stone formers
• 24hr urine calcium >250mg/d in women and >300mg/d in men prior to indapamide use
• high pH as >6.40 in the absence of urinary tract infection
• >21 years

Inclusion criteria: Subjects are eligible to participate if they are undergoing TAVR for aortic stenosis at the University of Texas Southwestern Medical Center. 1. The patient cannot or will not provide informed consent. 2. The patient is aged less than 18 years. 3. The patient's pre-procedural hematocrit is less than 25%. 4. The patient has known hepatitis C and/or human immunodeficiency virus infection 5. In the opinion of the principal investigator, the patient will be unlikely to complete long-term follow up for medical or social reasons.

• Age between 1 and 16 years (before 17th birthday)
• Estimated (based on SCr) GFR between 30 and 90 ml/min|1.73m2
• Willingness and ability to provide informed consent and assent
• Renal, other solid organ, bone marrow or stem cell transplantation
• Dialysis treatment within the past three months
• Cancer diagnosis or HIV diagnosis/treatment within last twelve months
• Current pregnancy or pregnancy within past twelve months
• Inability to complete major data collection procedures (e.g., allergic reaction to iodine or Iohexol)
• Current enrollment in a randomized clinical trial in which the specific treatment is unknown
• Not fluent in English or Spanish
• Plans to move out of area of any participating CKiD site (Families can be transferred to another CKiD site if they move)
• History of structural heart disease
• Genetic syndromes involving the central nervous system (e.g., Downs syndrome)
• History of severe to profound mental retardation (i.e., intelligence quotient (IQ)<40, significant impairment in adaptive function and/or inability to independently execute self-care skills)

Inclusion Criteria Participants must be:
• Age 18 years or older
• Have a history of non-muscle invasive bladder cancer or muscle invasive bladder cancer treated by bladder sparing techniques (or not yet treated) and diagnosed within the past 24 months on cystoscopic surveillance
• Participants may be treated with adjuvant intravesical therapy
• Willing and able to give written informed consent (see Appendix 1)
• Be willing to adhere to the surveillance regimen (high risk and intermediate risk seen every 3 months for 2 years; low risk seen every 6-12 months for 2 years) Participants must not:
• Have had radical cystectomy
• History of previous cancer (excluding bladder, basal and squamous cell skin cancer) within the past 3 years
• Have a known active urinary tract infection or urinary retention
• Have active stone disease (renal or bladder) or renal insufficiency (creatinine >2.0 mg/dL)
•Serum creatinine value can be up to 60 days before consent, otherwise repeat.
• Have ureteral stents, nephrostomy tubes or bowel interposition
• Have recent genitourinary instrumentation (within 10 days prior to signing consent)
• Be unable or unwilling to complete the surveillance regimen

• Patients with the first occurrence of any tumor of the kidney identified on CT scan or MRI are eligible for this study; histologic diagnosis is not required prior to enrollment but is required for all patients once on study
• Eligible tumors include (but are not limited to):
• Nephroblastic tumors
• Nephroblastoma (Wilms' tumor) (favorable histology, anaplasia [diffuse, focal])
• Nephrogenic rests and nephroblastomatosis
• Cystic nephroma and cystic partially differentiated nephroblastoma
• Metanephric tumors (metanephric adenoma, metanephric adenofibroma, metanephric stromal tumor)
• Mesoblastic nephroma (cellular, classic, mixed)
• Clear cell sarcoma
• Rhabdoid tumor (any malignant rhabdoid tumor occurring outside the central nervous system [CNS])
• Renal epithelioid tumors of childhood (papillary renal cell carcinoma, medullary renal cell carcinoma, renal tumors associated with Xp11.2 translocations, oncocytic renal neoplasms after neuroblastoma)
• Angiolipoma
• Ossifying renal tumor of infancy
• Patients with the first occurrence of the following tumors are also eligible:
• Extrarenal nephroblastoma or extrarenal neprogenic rests
• Malignant rhabdoid tumor occurring anywhere outside the Central Nervous System
• Required specimens, reports, and copies of imaging studies must be available for submission or must become available during the required timeframe
• For ALL patients (with exception of bilateral, bilaterally predisposed or unilateral tumor in solitary kidney planning to enroll without biopsy), the following submissions are required:
• A complete set of recut hematoxylin and eosin (H & E) slides**
• Representative formalin-fixed paraffin-embedded tissue block or if a block is unavailable, 10 unstained slides from a representative block of tumor**
• Institutional pathology report, transmittal form and pathology checklist
• Copies of images and institutional reports of CT and/or MRI abdomen and pelvis
• Copies of images and institutional report of CT chest for all malignant tumors
• Institutional surgical report(s)
• Tissue must be from diagnosis, prior to any chemotherapy or radiation
• For patients with clinical features and required imaging findings consistent with the eligibility for the bilateral study, AREN0534 (or successor study), confirmed by central review, biopsy is not required; however, if biopsy is done, tissue must be submitted as for other renal tumors, and initial risk assignment will require pathology and surgical rapid central reviews; transmittal form and pathology checklist are also needed
• Patients with extrarenal Wilms tumor must have tumor tissue available for central review
• Patients with extra-CNS malignant rhabdoid tumor must have tumor tissue available for central review
• All patients and/or their parents or legal guardians must sign a written informed consent
• All institutional, Food and Drug Administration (FDA), and National Cancer Institute (NCI) requirements for human studies must be met