Criteria for Inclusion of Subjects: Hand and forearm amputees: 1. Male or female, age 18 and older, of any race or ethnicity 2. Able and willing to sign Consent 3. Able and willing to participate in all study activities including implantation, testing and explantation of the study device. 4. Able to communicate effectively in English without an interpreter After preliminary screening subjects will be assessed for the following inclusion criteria: 1. Patient has an existing myoelectric hand prosthesis and demonstrates proficiency during daily use 2. Overall and phantom pain are well-controlled and not incapacitating Criteria for Exclusion of Subjects: 1. If MR neurogram and EMG/NCS study show nerve or muscle dysfunction/injury at a higher level than anticipated based on the appearance of the physical amputation stump, the subject may be excluded from the study due to adverse neuromuscular anatomy which would preclude use of the proposed experimental electrode implants. The radiographs will be used to confirm suitability of the amputation stump configuration. If the bony anatomy of the amputation stump is found to be unsuitable, the patient may be excluded from the study. 2. Subjects who have a history of cardiac arrhythmia will be excluded from the study.

• Histologically or cytologically-confirmed Ewing sarcoma, rhabdomyosarcoma, neuroblastoma, or osteosarcoma
• Disease progression after prior therapy in locally advanced or metastatic setting
• Measurable or evaluable disease based on the Response Evaluation Criteria in Solid Tumors (RECIST v1.1) criteria
• Age 12 months to <21 years
• Adequate bone marrow reserves, hepatic function, and renal function
• Recovered from effects of any prior surgery or cancer therapy
• Patients 18 years or older will provide written consent. A parent or legal guardian of a patient <18 years of age will provide informed consent and patients 11 to 18 years of age will provide written assent or as per participating institutional policy.
• Clinically significant gastrointestinal disorders
• NYHA Class III or IV congestive heart failure, ventricular arrhythmias or uncontrolled blood pressure
• Active infection or unexplained fever
• Known hypersensitivity to any of the components of MM-398 or other liposomal products
• Recent Investigational therapy
• Pregnant or breast feeding; females of child-bearing potential must test negative for pregnancy at the time of enrollment

1. Subjects with a diagnosis of iobenguane avid, high-risk neuroblastoma based on Revised INRC criteria at the time of study enrollment with recurrent or progressive disease at any time prior to enrollment, regardless of overall response to frontline therapy, where frontline therapy includes a minimum of 4 cycles of induction therapy at any time prior to enrollment. 2. May have had prior 131I-MIBG therapy, provided: 1. It has been at least 6 months from the date of last 131I-MIBG ; 2. Response was other than progressive disease on first restaging after 131I-MIBG ; 3. Prior 131I-MIBG was given as monotherapy and not in combination with systemic anticancer agents; 4. Cumulative lifetime dose of 131I-MIBG at enrollment does not exceed 18 mCi/kg. 3. All soft tissue lesions identified on CT/MRI scans must be iobenguane avid lesions on an (123I)-iobenguane scan, or 1. any progressive non-iobenguane avid lesion is proven by biopsy to be a non-neuroblastoma lesion. 2. any other non-avid lesion is comprised of a fibrotic or scarred mass as shown by routine imaging and confirmed by the investigator. 4. Adequate cryopreserved autologous peripheral blood stem cells or bone marrow (at least 2 aliquots of 2.0 × 10exp6 CD34/kg at the time of study enrollment). 5. If a male, must agree to use an adequate contraception method as deemed appropriate by the Investigator (e.g., vasectomy, condoms) or partner using effective contraception and to not donate sperm during the study and for 90 days after receiving the last dose of study drug. 6. If a female of childbearing potential, have a negative serum pregnancy test result prior to each dosing and, if sexually active, be practicing an effective method of birth control [e.g., intrauterine device, double-barrier method (i.e., diaphragm, or a cervical cap) with intravaginal spermicidal foam, cream or gel], or male partner sterilization throughout the study. 7. Age at study entry ≥1 year. 8. Previous platelet transfusions are permitted, as long as the subject has a platelet count ≥50,000/μL without transfusion support for at least 1 week. 9. Subjects must have a minimum pulse oximetry measurement of at least 94% at baseline. 10. An absolute neutrophil count ≥750/μL without growth factor for 5 days. 11. Liver function parameter results: total bilirubin ≤2 × upper limit of normal for age, and Serum alanine aminotransferase (glutamic-pyruvic transaminase) and serum aspartate aminotransferase (glutamic-oxaloacetic transaminase) ≤ 10 times the upper limit of normal (for all sites, the upper limit of normal for alanine aminotransferase is defined as 45 U/L). 12. Normal thyroid function as measured by T4 or TSH or have abnormal results that are not considered clinically important by the Investigator or may be receiving levothyroxine. 13. Cardiac Function: shortening fraction of ≥ 27% by echocardiogram or ejection fraction ≥ 50% documented by echocardiogram or radionuclide angiogram within 1 month prior to Visit 1 (Baseline). 14. Karnofsky Performance Status (for subjects >16 years of age) or the Lansky Performance Status Performance Status (for subjects 1 to 16 years of age) ≥50%. 15. Full recovery from the toxic effects of any prior therapy. 16. Coagulation Function: 1. International Normalized Ratio (INR) < 1.5 2. Partial thromboplastin time (PTT) < 1.5 times upper limit of normal. 1. Subjects within 5 half-lives after any antibody-based immunotherapy, or have not recovered from effects of any biologic therapy. 2. Subjects <12 weeks after myeloablative therapy with autologous stem cell transplant. 3. Subjects who have had an allogeneic stem cell treatment less than 4 months from Visit 1 are excluded. Those who have received allogeneic stem cell treatment more than 4 months from Visit 1 must have recovered and have no active graft versus host disease (GVHD) to be eligible. 4. Subjects must not have received radiation for a minimum of 2 weeks prior to study enrollment. Subjects whose only site(s) of disease have been radiated are eligible as long as the subject has MIBG avidity 2 weeks after completion of radiation. A minimum of 12 weeks prior to study enrollment is required following prior large field radiation therapy (ie, craniospinal, whole abdominal, total lung, > 50% marrow space) 5. History of total body irradiation. 6. Subjects do not have adequate renal function defined as GFR ≥ 70 mL/min/1.73 m2 either by creatinine clearance or radioisotope direct measurement or by calculation with the Schwartz formula 7. Subjects who are on hemodialysis. 8. Pregnancy or breastfeeding. 9. Significant active infections including active hepatitis B, or hepatitis C infection, or known infection with human immunodeficiency virus (HIV) (testing for HIV is not required prior to study entry). 10. Clinically important cardiac, pulmonary, and hepatic impairment. 11. Vorinostat treatment exclusion criteria (subjects, who meet any one of these criteria and otherwise meet eligibility criteria, are still eligible for 131I-MIBG monotherapy) 1. Since valproic acid has HDAC inhibitory activity, patients must not have received valproic acid within 30 days of study entry. 2. Since vorinostat may prolong the QT interval, patients must not be receiving other medications known to prolong the QT interval at the time of study entry . Pentamidine must not have been received within 1 week of study enrollment. 3. Patients with a history of deep venous thrombosis that was not associated with the presence of a central venous catheter. 4. Patients who are receiving Coumadin.

• Have a diagnosis of migraine with or without aura as defined by the IHS ICHD-3 guidelines (1.1 or 1.2 according to ICHD-3 [2018]), with a history of migraine headaches of at least 6 months prior to screening.
• Participants who are taking, or are expected to take, therapeutic antibodies during the course of the study (adalimumab, infliximab, trastuzumab, bevacizumab, etc.). Prior use of therapeutic antibodies is allowed if that use was more than 12 months prior to baseline.
• Known hypersensitivity to monoclonal antibodies or other therapeutic proteins, or to galcanezumab or its excipients.
• Current use or prior exposure to galcanezumab, another CGRP antibody, or CGRP receptor antibody, including those who have previously completed or withdrawn from this study or any other study investigating a CGRP antibody.
• History of IHS ICHD-3 diagnosis of new daily persistent headache, cluster headache or migraine subtypes including hemiplegic (sporadic or familial) migraine and migraine with brainstem aura (previously basilar-type migraine).
• History of significant head or neck injury within 6 months prior to screening; or traumatic head injury at any time that is associated with significant change in the quality or frequency of their headaches, including new onset of migraine following traumatic head injury.
• Participants with a known history of intracranial tumors or developmental malformations including Chiari malformations.

Key For Phase 1:
• Participants with a locally advanced or metastatic solid tumor that:
• Has progressed on or is intolerant to standard therapy, or
• For which no standard therapy exists, or in the opinion of the Investigator, are not candidates for or would be unlikely to tolerate or derive significant clinical benefit from standard therapy, or
• Decline standard therapy
• Prior multikinase inhibitors (MKIs) with anti-RET activity are allowed
• A RET gene alteration is not required initially. Once adequate PK exposure is achieved, evidence of RET gene alteration in tumor and/or blood is required as identified through molecular assays, as performed for clinical evaluation
• Measurable or non-measurable disease as determined by RECIST 1.1 or RANO as appropriate to tumor type
• Eastern Cooperative Oncology Group (ECOG) score of 0, 1, or 2 or Lansky Performance Score (LPS) greater than or equal to (≥) 40 percent (%) (age less than [<] 16 years) with no sudden deterioration 2 weeks prior to the first dose of study treatment
• Adequate hematologic, hepatic and renal function
• Life expectancy of at least 3 months For Phase 2: As for phase 1 with the following modifications:
• For Cohort 1: Participants must have received prior standard therapy appropriate for their tumor type and stage of disease, or in the opinion of the Investigator, would be unlikely to tolerate or derive clinical benefit from appropriate standard of care therapy
• Cohorts 1 and 2:
• Enrollment will be restricted to participants with evidence of a RET gene alteration in tumor
• At least one measurable lesion as defined by RECIST 1.1 or RANO, as appropriate to tumor type and not previously irradiated
• Cohorts 3 and 4: Enrollment closed
• Cohort 5:
• Cohorts 1-4 without measurable disease
• MCT not meeting the requirements for Cohorts 3 or 4
• MTC syndrome spectrum cancers (e.g., MTC, pheochromocytoma), cancers with neuroendocrine features/differentiation, or poorly differentiated thyroid cancers with other RET alteration/activation may be allowed with prior Sponsor approval
• cfDNA positive for a RET gene alteration not known to be present in a tumor sample
• Cohort 6: Participants who otherwise are eligible for Cohorts 1, 2 or 5 who discontinued another RET inhibitor may be eligible with prior Sponsor approval
• Cohort 7: Participants with a histologically confirmed stage IB-IIIA NSCLC and a RET fusion; determined to be medically operable and tumor deemed resectable by a thoracic surgical oncologist, without prior systemic treatment for NSCLC Key Exclusion Criteria (Phase 1 and Phase 2):
• Phase 2 Cohorts 1 and 2: an additional known oncogenic driver
• Cohorts 3 and 4: Enrollment closed
• Cohorts 1, 2 and 5: prior treatment with a selective RET inhibitor Notes: Participants otherwise eligible for Cohorts 1, 2, and 5 who discontinued another selective RET inhibitor may be eligible for Phase 2 Cohort 6 with prior Sponsor approval
• Investigational agent or anticancer therapy (including chemotherapy, biologic therapy, immunotherapy, anticancer Chinese medicine or other anticancer herbal remedy) within 5 half-lives or 2 weeks (whichever is shorter) prior to planned start of LOXO-292 (selpercatinib). In addition, no concurrent investigational anti-cancer therapy is permitted Note: Potential exception for this exclusion criterion will require a valid scientific justification and approval from the Sponsor
• Major surgery (excluding placement of vascular access) within 2 weeks prior to planned start of LOXO-292 (selpercatinib)
• Radiotherapy with a limited field of radiation for palliation within 1 week of planned start of LOXO-292 (selpercatinib), with the exception of participants receiving radiation to more than 30% of the bone marrow or with a wide field of radiation, which must be completed at least 4 weeks prior to the first dose of study treatment
• Any unresolved toxicities from prior therapy greater than Common Terminology Criteria for Adverse Events (CTCAE) Grade 1 at the time of starting study treatment with the exception of alopecia and Grade 2, prior platinum-therapy related neuropathy
• Symptomatic primary CNS tumor, metastases, leptomeningeal carcinomatosis, or untreated spinal cord compression. Participants are eligible if neurological symptoms and CNS imaging are stable and steroid dose is stable for 14 days prior to the first dose of LOXO-292 (selpercatinib) and no CNS surgery or radiation has been performed for 28 days, 14 days if stereotactic radiosurgery (SRS)
• Clinically significant active cardiovascular disease or history of myocardial infarction within 6 months prior to planned start of LOXO-292 (selpercatinib) or prolongation of the QT interval corrected (QTcF) greater than (>) 470 milliseconds (msec)
• Participants with implanted pacemakers may enter the study without meeting QTc criteria due to nonevaluable measurement if it is possible to monitor for QT changes.
• Participants with bundle branch block may be considered for study entry if QTc is appropriate by a formula other than Fridericia's and if it is possible to monitor for QT changes.
• Required treatment with certain strong cytochrome P450 3A4 (CYP3A4) inhibitors or inducers and certain prohibited concomitant medications
• Phase 2 Cohort 7 (neoadjuvant treatment): Participant must not have received prior systemic therapy for NSCLC.

• Stratum I
• Patients must be less than 18 years of age at the time of diagnosis.
• Patients must have histological verification of the diagnosis of Langerhans cell histiocytosis according to the criteria described in Section 6.1
• Signed informed consent form
• Stratum II
• Patients of Stratum I who have:
• Progressive disease (AD worse) in non-risk organs after 6 weeks (Initial Course
• AD intermediate or worse in non-risk organs or AD better in risk organs after 12 weeks (Initial Course 2)
• Disease progression (AD worse) in non-risk organs at any time during continuation treatment
• Active disease at the end of Stratum I treatment
• Disease reactivation in non-risk organs at any time after completion of Stratum I treatment
• Stratum III
• Patients from Stratum I who fulfill the following criteria:
• AD worse in risk organs after week 6 (after Initial Course 1), or AD worse or AD intermediate in risk organs after week 12 (after Initial Course 2).
• Presence of unequivocally severe organ dysfunction at the above mentioned evaluation points (hematological dysfunction, liver dysfunction, or both of them) as
• Hb <70 g/L (<7.0 g/dl) and/or transfusion dependency
• PLT <20 x109/L (20,000/μL) and/or transfusion dependency (both criteria have to be fulfilled) AND/OR
• Liver dysfunction (or digestive involvement with protein loss)
• Total protein <55 g/L or substitution dependency
• Albumin <25 g/L or substitution dependency (at least one of the two criteria to be fulfilled)
• Stratum IV
• Patients from Stratum I or Stratum III who fulfill the following criteria:
• AD worse in risk organs after week 6 (after Initial Course 1), or AD worse or AD intermediate in risk organs after week 12 (after Initial Course 2) of Stratum I OR
• AD worse after the 2nd and 3rd 2-CdA/Ara-C course, and those AD worse or AD intermediate after the 4th 2-CdA/Ara-C course of Stratum III AND
• Presence of unequivocally severe organ dysfunction at the above mentioned evaluation points (hematological dysfunction, liver dysfunction, or both of them) as defined in Table XI (see Section 10.3.1).
• Informed consent: All patients or their legal guardians (if the patient is <18 years of age) must sign an Ethics or institutional Review Board approved consent form indicating their awareness of the investigational nature and the risks of this study. When appropriate, younger patients will be included in all discussions in order to obtain assent.
• Adequate organ function: Patients should have adequate hepatic, renal, cardiac and pulmonary function to undergo reduced intensity HCT based upon local institutional guidelines, or at a minimum meet requirements noted in eligibility checklist Appendix A-VIII_1. However, significant hepatic and pulmonary dysfunction, if secondary to underlying LCH disease activity, will not exclude patients from protocol enrollment and should be discussed with the National PI Coordinator and the Coordinating Principal Investigator.
• Stratum V
• All patients with verified diagnosis of LCH and MRI findings consistent with ND-CNSLCH irrespective of previous treatments (also those not registered to other Strata ofLCH-IV).
• Patients with isolated tumorous CNS-LCH (including isolated DI with mass lesion in the hypothalamus-pituitary axis). In patients with already established diagnosis of LCH and radiologic finding of CNS lesions compatible with LCH, a biopsy of the lesion is not obligatory. In all other cases a biopsy of the lesion is needed for inclusion into the study
• Stratum VI -- Patients with newly diagnosed SS-LCH and localization other than "multifocal bone",isolated tumorous CNS lesion, or isolated "CNS-risk" lesion.
• Stratum VII -- All patients registered in LCH IV (regardless of treatment) as long as consent for longterm follow-up has not been withheld.
• Stratum I
• Pregnancy (patients of child-bearing age must be appropriately tested before chemotherapy)
• LCH-related permanent consequences (e.g. vertebra plana, sclerosing cholangitis, lung fibrosis, etc.) in the absence of active disease
• Prior systemic therapy
• Stratum II
• Patients with progressive disease in risk organs
• Permanent consequences (e.g. sclerosing cholangitis, lung fibrosis, etc.) without evidence of active LCH in the same organ or in any other locations
• No written consent of the patient or his/her parents or legal guardian
• Stratum III
• The presence of any of the following criteria will exclude the patient from the study:
• Isolated sclerosing cholangitis without evidence of active hepatic LCH as the only evidence of risk organ involvement.
• Inadequate renal function as defined by serum creatinine > 3x normal for age
• Stratum IV
• Pulmonary failure (requiring mechanical ventilation) not due to active LCH.
• Isolated liver sclerosis or pulmonary fibrosis, without active LCH.
• Uncontrolled active life-threatening infection.
• Decreased renal function with a GFR of less than 50ml/1.73m2/min.
• Pregnancy or active breast feeding
• Failure to provide signed informed consent
• Stratum VI
• Patients with SS-LCH who have an isolated tumorous CNS lesion (they are eligible for Stratum V),
• Patients with isolated "CNS-risk" or multifocal bone lesions (they are eligible for Stratum I, Group 2)

Participant(s) must meet all of the following criteria to be eligible for this study: 1. Diagnosis of Multiple Sclerosis (MS) according to the 2017 McDonald Criteria 2. (Kurtzke) Expanded Disability Status Scale (EDSS) ≤ 6.0 at the time of randomization (Day 0) 3. T2 abnormalities on brain Magnetic Resonance Imaging (MRI) that fulfill the 2017 McDonald MRI criteria for dissemination in space --A detailed MRI report or MRI images must be available for review by the site neurology investigator. 4. Highly active treatment-resistant relapsing MS, defined as ≥ 2 episodes of disease activity in the 36 months prior to the screening visit (Visit -2). The two disease activity episodes will be a clinical MS relapse or MRI evidence of MS disease activity and must meet all the criteria as described below: 1. At least one episode of disease activity must occur following ≥ 1 month of treatment with an oral DMT approved by the FDA or MHRA for the treatment of relapsing MS, or a monoclonal antibody, specifically: dimethyl fumarate (Tecfidera®), diroximel fumarate, teriflunomide (Aubagio®), cladribine (Mavenclad®), daclizumab (Zinbryta®), siponimod (Mayzent®), ozanimod, fingolimod (Gilenya®), rituximab (Rituxan®), ocrelizumab (Ocrevus®), natalizumab (Tysabri®), alemtuzumab (Campath®, Lemtrada®), or ofatumumab (Arzerra®), and 2. At least one episode of disease activity must have occurred within the 12 months prior to the screening visit (Visit -2), and 3. At least one episode of disease activity must be a clinical MS relapse (see item c.i. below). The other episode(s) must occur at least one month before or after the onset of the clinical MS relapse, and must be either another clinical MS relapse or MRI evidence of disease activity (see item d.ii. below): i. Clinical MS relapse must be confirmed by a neurologist's assessment and documented contemporaneously in the medical record. If the clinical MS relapse is not documented in the medical record, it must be approved by the study adjudication committee, and ii. MRI evidence of disease activity must include ≥ 2 unique active lesions on a brain or spinal cord MRI. A detailed MRI report or MRI images must be available for review by the site neurology investigator. A unique active lesion is defined as either of the following:
• A gadolinium-enhancing lesion, or
• A new non-enhancing T2 lesion compared to a reference scan obtained not more than 24 months prior to the screening visit (Visit -2). 5. Candidacy for treatment with at least one of the following high efficacy DMTs: Cladribine, natalizumab, alemtuzumab, ocrelizumab, rituximab, and ofatumumab (after approval by the FDA for relapsing MS). Candidacy for treatment for each DMT is defined as meeting all of the following:
• No prior disease activity with the candidate DMT, and
• No contraindication to the candidate DMT, and
• No treatment with the candidate DMT in the 12 months prior to screening. 6. Completion of SARS-CoV-2 vaccination series ≥ 14 days prior to randomization (Day 0). 7. Positive for VZV antibodies, or completion of at least one dose of the varicella zoster glycoprotein E (gE) Shingrix vaccine at least 4 weeks prior to randomization (Day 0). 8. Insurance or public funding approval for MS treatment with at least one candidate DMT, and 9. Ability to comply with study procedures and provide informed consent, in the opinion of the investigator. Subject(s) who meet any of the following criteria will not be eligible for this study: 1. Diagnosis of primary progressive Multiple Sclerosis (MS) according to the 2017 McDonald criteria 2. History of neuromyelitis optica or anti-myelin oligodendrocyte glycoprotein (anti-MOG) antibodies associated encephalomyelitis 3. Prior treatment with an investigational agent within 3 months or 5 half-lives, whichever is longer. Agents authorized by the FDA or MHRA for prevention or treatment of SARS-CoV-2 are not considered investigational. 4. Either of the following within one month prior to randomization (Day 0): 1. Onset of acute MS relapse, or 2. Treatment with intravenous methylprednisolone 1000 mg/day for 3 days or equivalent. 5. Initiation of natalizumab, alemtuzumab, ocrelizumab, or rituximab between screening visit (Visit -2) and randomization (Day 0) 6. Brain MRI or Cerebrospinal fluid (CSF) examination indicating a diagnosis of progressive multifocal leukoencephalopathy (PML) 7. History of cytopenia consistent with the diagnosis of myelodysplastic syndrome (MDS) 8. Presence of unexplained cytopenia, polycythemia, thrombocythemia or leukocytosis 9. History of sickle cell anemia or other hemoglobinopathy 10. Evidence of past or current hepatitis B or hepatitis C infection, including treated hepatitis B or hepatitis C -Note: Hepatitis B surface antibody following hepatitis B immunization is not considered to be evidence of past infection. 11. Presence or history of mild to severe cirrhosis 12. Hepatic disease with the presence of either of the following: 1. Total bilirubin ≥ 1.5 times the upper limit of normal (ULN) or total bilirubin
• 3.0 times the ULN in the presence of Gilbert's syndrome, or 2. Alanine Aminotransferase (ALT) or Aspartate Aminotransferase (AST) ≥ 2.0 times the ULN. 13. Positive SARS-CoV-2 PCR test, or alternative nucleic acid amplification test (NAAT) per institutional standards, within 14 days prior to randomization (Day 0). 14. Evidence of HIV infection 15. Positive QuantiFERON
•TB Gold, TB Gold Plus, or T-SPOT®.TB test results (e.g., blood test results. Purified Protein Derivative (PPD) tuberculin test may be substituted for QuantiFERON
•TB Gold, TB Gold Plus, or T-SPOT®.TB test results. 16. Active viral, bacterial, endoparasitic, or opportunistic infections 17. Active invasive fungal infection 18. Hospitalization for treatment of infections or parenteral (IV or IM) antibacterials, antivirals, antifungals, or antiparasitic agents within the 30 days prior to randomization (Day 0) unless clearance is obtained from an Infectious Disease specialist 19. Receipt of live or live-attenuated vaccines within 6 weeks of randomization (Day 0) 20. Presence or history of clinically significant cardiac disease including: 1. Arrhythmia requiring treatment with any antiarrhythmia therapy, with the exception of low dose beta blocker for intermittent premature ventricular contractions 2. Coronary artery disease with a documented diagnosis of either:
• Chronic exertional angina, or
• Signs or symptoms of congestive heart failure. 3. Evidence of heart valve disease, including any of the following:
• Moderate to severe valve stenosis or insufficiency,
• Symptomatic mitral valve prolapse, or
• Presence of prosthetic mitral or aortic valve. 21. Left ventricular ejection fraction (LVEF) < 50% 22. Impaired renal function defined as Estimated glomerular filtration rate (eGFR) < 60 mL/min/1.73 m^2 according to the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) formula 23. Forced expiratory volume in one second (FEV1) <70% predicted (no bronchodilator) 24. Diffusing capacity of the lungs for carbon monoxide (DLCO) (corrected for Hgb) < 70% predicted 25. Poorly controlled diabetes mellitus, defined as HbA1c >8% 26. History of malignancy, with the exception of adequately treated localized basal cell or squamous skin cancer, or carcinoma in situ of the cervix. -Note:Malignancies for which the participant is judged to be cured prior to randomization (Day 0) will be considered on an individual basis by the study adjudication committee. 27. Presence or history of any moderate to severe rheumatologic autoimmune disease requiring treatment, including but not limited to the following:
• systemic lupus erythematous
• systemic sclerosis
• rheumatoid arthritis
• Sjögren's syndrome
• polymyositis
• dermatomyositis
• mixed connective tissue disease
• polymyalgia rheumatica
• polychondritis
• sarcoidosis
• vasculitis syndromes, or
• unspecified collagen vascular disease. 28. Presence of active peptic ulcer disease, defined as endoscopic or radiologic diagnosis of gastric or duodenal ulcer 29. Prior history of AHSCT 30. Prior history of solid organ transplantation 31. Positive pregnancy test or breast-feeding 32. Inability or unwillingness to use effective means of birth control 33. Failure to willingly accept or comprehend irreversible sterility as a side effect of therapy 34. Psychiatric illness, mental deficiency, or cognitive dysfunction severe enough to interfere with compliance or informed consent 35. History of hypersensitivity to mouse, rabbit, or Escherichia coli-derived proteins 36. Any metallic material or electronic device in the body, or condition that precludes the participant from undergoing MRI with gadolinium administration 37. Presence or history of ischemic cerebrovascular disorders, including but not limited to transient ischemic attack, subarachnoid hemorrhage, cerebral thrombosis, cerebral embolism, or cerebral hemorrhage 38. Presence or history of other neurological disorders, including but not limited to:
• central nervous system (CNS) or spinal cord tumor
• metabolic or infectious cause of myelopathy
• genetically-inherited progressive CNS disorder
• CNS sarcoidosis, or
• systemic autoimmune disorders potentially causing progressive neurologic disease or affecting ability to perform the study assessments. 39. Presence of any medical comorbidity that the investigator determines will significantly increase the risk of treatment mortality, or 40. Presence of any other concomitant medical condition that the investigator deems incompatible with trial participation.

• PRE-ENROLLMENT ELIGIBILITY SCREENING (STEP 0): Patients must be >= 12 months and =< 21 years of age at the time of enrollment on Step 0
• Note: This age range encompasses pre-screening for all HGG patients. Individual treatment protocols may have different age criteria.
• PRE-ENROLLMENT ELIGIBILITY SCREENING (STEP 0): Patient is suspected of having localized newly-diagnosed HGG, excluding metastatic disease.
• PRE-ENROLLMENT ELIGIBILITY SCREENING (STEP 0): Patient and/or their parents or legal guardians have signed informed consent for eligibility screening on APEC14B1 Part A.
• PRE-ENROLLMENT ELIGIBILITY SCREENING (STEP 0): The specimens obtained at the time of diagnostic biopsy or surgery must be submitted through APEC14B1 as soon as possible (ASAP), preferably within 5 calendar days of the procedure.
• Please note: See the APEC14B1 Manual of Procedures for a full list of detailed instructions for submitting required materials and for shipping details.
• Patients must be >= 3 years and =< 21 years of age at the time of enrollment.
• Patients must have eligibility confirmed by Rapid Central Pathology and Molecular Screening Reviews performed on APEC14B1
• Newly diagnosed high-grade glioma with BRAF^V600-mutation
• Results for H3 K27M by immunohistochemistry (IHC) or sequencing
• Histologically confirmed high-grade glioma (World Health Organization [WHO] grade III or IV) including but not limited to: anaplastic astrocytoma (AA), anaplastic pleomorphic xanthoastrocytoma (aPXA), anaplastic gangliogliomas (aGG), glioblastoma (GB), and high-grade astrocytoma, not otherwise specified (NOS).
• Patients must have had histologic verification of a high-grade glioma diagnosis. CSF cytology by lumbar puncture must be done if clinically indicated and determined to be safe prior to study enrollment. If cytology proves positive, the patient would be considered to have metastatic disease and would, therefore, be ineligible.
• A pre- and post-operative brain MRI with and without contrast and a baseline spine MRI with contrast must be obtained prior to enrollment. The requirement for a post-operative MRI is waived for patients who undergo biopsy only. If the spine MRI is positive, the patient would be considered to have metastatic disease and would be ineligible.
• Patients must have a performance status corresponding to Eastern Cooperative Oncology Group (ECOG) scores of 0, 1, or 2. Use Karnofsky for patients > 16 years of age and Lansky for patients =< 16 years of age.
• Peripheral absolute neutrophil count (ANC) >= 1000/uL (within 7 days prior to enrollment).
• Platelet count >= 100,000/uL (transfusion independent) (within 7 days prior to enrollment).
• Hemoglobin >= 8.0 g/dL (may receive red blood cell [RBC] transfusions) (within 7 days prior to enrollment).
• Creatinine clearance or radioisotope glomerular filtration rate (GFR) >= 70 mL/min/1.73 m^2 (within 7 days prior to enrollment) or
• A serum creatinine based on age/gender as follows (within 7 days prior to enrollment):
• Age 3 to < 6 years (Male 0.8 mg/dL, Female 0.8 mg/dL)
• Age 6 to < 10 years (Male 1 mg/dL, Female 1 mg/dL)
• Age 10 to < 13 years (Male 1.2 mg/dL, Female 1.2 mg/dL)
• Age 13 to < 16 years (Male 1.5 mg/dL, Female 1.4 mg/dL)
• Age >= 16 years (Male 1.7 mg/dL, Female 1.4 mg/dL)
• Total bilirubin =< 1.5 x upper limit of normal (ULN) for age (within 7 days prior to enrollment), and
• Serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) =< 135 U/L (within 7 days prior to enrollment). For the purpose of this study, the ULN for SGPT is 45 U/L.
• Patients with a seizure disorder may be enrolled if their seizures are well controlled while on non-enzyme inducing anticonvulsants permitted on this study.
• All patients and/or their parents or legal guardians must sign a written informed consent
• Patients must be enrolled and protocol therapy must be projected to begin no later than 31 days after definitive surgery (day 0). If a biopsy only was performed, the biopsy date will be considered the date of definitive surgery. For patients who have a biopsy or incomplete resection at diagnosis followed by additional surgery, the date of the last resection will be considered the date of definitive surgery.
• Patients with intrinsic brainstem or primary spinal cord tumors will be excluded.
• Patients with metastatic disease (defined as neuraxis dissemination either by imaging or by cytology) will be excluded.
• Patients must not have received any prior tumor-directed therapy including chemotherapy, radiation therapy, immunotherapy, or bone marrow transplant for the treatment of HGG other than surgical intervention and/or corticosteroids.
• Previous treatment with dabrafenib or another RAF inhibitor, trametinib or another MEK inhibitor, or an ERK inhibitor.
• Patients with a history of a malignancy with confirmed activating RAS mutation.
• History of allergic reactions attributed to compounds of similar chemical or biologic composition to dabrafenib, trametinib, and their excipients.
• Uncontrolled medical conditions (e.g., diabetes mellitus, hypertension, liver disease, or uncontrolled infection), psychological, familial, sociological, or geographical conditions that do not permit compliance with the protocol; or unwillingness or inability to follow the procedures required in the protocol.
• Presence of active gastrointestinal (GI) disease or other condition (e.g., small bowel or large bowel resection) that will interfere significantly with the absorption of drugs.
• History of hepatitis B virus, or hepatitis C virus infection (patients with laboratory evidence of cleared hepatitis B virus and/or hepatitis C virus may be enrolled).
• History or current diagnosis of cardiac disease indicating significant risk of safety for patients participating in the study such as uncontrolled or significant cardiac disease, including any of the following:
• Recent myocardial infarction (within the last 6 months);
• Uncontrolled congestive heart failure;
• Unstable angina (within last 6 months);
• Clinically significant (symptomatic) or known, uncontrolled cardiac arrhythmias (e.g., sustained ventricular tachycardia, and clinically significant second or third degree atrioventricular [AV] block without a pacemaker) except sinus arrhythmia within the past 24 weeks prior to the first dose of study treatment;
• Coronary angioplasty or stenting (within last 6 months);
• Intra-cardiac defibrillators;
• Abnormal cardiac valve morphology (>= grade 2) documented by echocardiogram.
• Patients with a history or current evidence of retinal vein occlusion (RVO) or central serous retinopathy (CSR), or predisposing factors to RVO or CSR (e.g., uncontrolled glaucoma or ocular hypertension).
• Patients with presence of interstitial lung disease or pneumonitis.
• Female patients who are pregnant are ineligible since there is yet no available information regarding human fetal or teratogenic toxicities.
• Lactating females are not eligible unless they have agreed not to breastfeed their infants for the duration of the study and for 4 months following discontinuation of study therapy.
• Female patients of childbearing potential are not eligible unless a negative pregnancy test result has been obtained.
• Sexually active patients of reproductive potential (male or female) are not eligible unless they have agreed to use an effective contraceptive method for the duration of their study participation and for 4 months following discontinuation of study therapy. Male patients (including those who have had a vasectomy) taking dabrafenib and trametinib combination therapy must use a condom during intercourse while on study and for 16 weeks after stopping treatment, and should not father a child during these periods. Women of childbearing potential should use effective non-hormonal contraception during therapy and for 4 weeks following discontinuation of dabrafenib and at least 4 months following the last dose of trametinib in patients taking combination therapy. Women should be advised that dabrafenib may decrease the efficacy of hormonal contraceptives and an alternate method of contraception, such as barrier methods, should be used.

• Age 50 and older
• Native English speakers
• 12 years of education or higher
• Active diagnosis of aMCI
• History of TBI based on VA/DOD criteria
• TBI within the past 2 years
• Lifetime history of stroke, transient ischemic attack, heart attack, or congestive heart failure
• Lifetime history of epilepsy
• Major psychiatric disorders (i.e., posttraumatic stress disorder, bipolar disorder, schizophrenia)
• Substance use disorder
• Has metal fragments in head
• Taking medications that may interact with the HD-tDCS effect (i.e., amphetamines, L-dopa, carbamazepine, sulpiride, pergolide, lorazepam, dextromethorphan, D-cycloserine, flunarizine, or ropinirole)

1. Participant is able and willing to provide informed consent (≥18 years), or informed consent is obtained by the parent or legal guardian for minor participants, with the minor providing age appropriate assent, according to local law and regulations; 2. Life expectancy ≥ 12 weeks; 3. Known high-risk neuroblastoma OR previously intermediate-risk neuroblastoma that has relapsed or progressed to high-risk, with failure to achieve complete response with standard therapy (defined as at least 4 cycles of aggressive multi-drug induction chemotherapy with or without radiation and surgery, or according to a standard high-risk treatment/neuroblastoma protocol), OR who are medically ineligible to receive standard treatment OR who are intolerant to standard treatment; 4. Adequate recovery from acute toxic effects of any prior therapy, as deemed by the Investigator or treating Sub-Investigator; 5. Adequate liver function as defined by the following laboratory values obtained within 28 days prior to administration of 64Cu-SARTATE: Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) < 3.0 x upper limit of normal (ULN); 6. Adequate renal function; 7. Adequate laboratory parameters: Absolute neutrophil count > 1.0 x 10 9/L; Platelet count > 50 x 10 9/L; Total bilirubin <1.5 x ULN; 8. Karnofsky or Lansky performance status ≥50; 9. All participants must have a hematopoietic stem cell product available (minimum CD34+ cell dose is ≥2 x 10 6 cells/kg); 10. Sexually active participants of reproductive potential must practice an effective method of birth control while participating on this study, to avoid possible damage to the fetus. Abstinence is considered acceptable; 11. 64Cu-SARTATE uptake on the 4 hour scan (SUVmax) of any lesion equal to or higher than that of the liver in order to move on to the therapy phase of the study. 1. Participants with disease of any major organ system that would compromise their ability to tolerate therapy, as deemed by the Investigator or treating Sub-Investigator; 2. Any other active malignancy, or a history of prior malignancy within the past 3 years; 3. History of cardiac failure as evidenced by: dyspnea at rest, exercise intolerance, oxygen requirement, clinically significant cardiac dysfunction; 4. Planned administration of chemotherapy, anti-cancer cytokine therapy, immunotherapy or radiotherapy within 2 weeks prior to the administration of 64Cu-SARTATE; 5. Administration of therapeutic dose of 131I-MIBG within 8 weeks prior to the administration of 64Cu-SARTATE; 6. External beam radiation therapy (EBRT) to both kidneys or a single functioning kidney within 12 months prior to the administration of 64Cu-SARTATE; 7. Administration of any investigational agents within 21 days prior to administration of 64Cu-SARTATE; 8. Treatment with long acting somatostatin analogues (administered within 28 days prior to the administration of 64Cu-SARTATE), or short acting somatostatin analogues (administered within 24 hours prior to the administration of 64Cu-SARTATE); 9. Known sensitivity or allergy to somatostatin analogues; 10. Previous peptide receptor radionuclide therapy (PRRT); 11. Female participants who are pregnant or lactating; 12. Participants who are on hemodialysis; 13. QTc interval ≥ 0.45 seconds as measured by Screening ECG; 14. Participants with uncontrolled infection(s); 15. Any medical condition which the Investigator feels may interfere with the procedures or evaluations of the study; 16. Participants 12 months and younger will be excluded from cohorts where the planned single or cumulative administered activity is modelled to deliver a radiation dose to the marrow that exceeds 2 Gy.

• All patients must have a pathologically confirmed diagnosis of neuroblastoma, ≤ 30.99 years of age with history of relapsed/refractory neuroblastoma.
• All patients must have completed upfront therapy with at least 4 cycles of aggressive multi-drug chemotherapy.
• Specific Criteria by Arm: Arms 1 and 2: Subjects with no active disease: i. No evidence of residual disease by CT/MRI and MIBG scan (or PET for patients who have a history of MIBG non-avid disease). o Note: Patients with residual masses detected by CT/MRI may be considered in CR if their MIBG is negative or if MIBG positive and evaluated by PET and found to have negative PET scans; biopsy confirmation may be considered if there is still reasonable concern for persistent disease but is not required. ii. No evidence of disease metastatic to bone marrow. Arm 3: Measurable or evaluable disease, including at least one of the following: Measurable tumor by CT or MRI; or a positive MIBG and PET; or positive bone marrow biopsy/aspirate in at least one site.
• Timing from prior therapy: Enrollment (first dose of DFMO) no later than 60 days from last dose of the most recent therapy.
• Subjects must have fully recovered from the acute toxic effects of all prior anti- cancer chemotherapy and be within the following timelines: 1. Myelosuppressive chemotherapy: Must not have received within 2 weeks of enrollment onto this study (6 weeks if prior nitrosourea). 2. Hematopoietic growth factors: At least 5 days since the completion of therapy with a growth factor. 3. Biologic (anti-neoplastic agent): At least 7 days since the completion of therapy with a biologic agent. 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. 4. Immunotherapy: At least 6 weeks since the completion of any type of immunotherapy, e.g. tumor vaccines, CAR-T cells. 5. Anti-GD2 Monoclonal antibodies: At least 2 weeks must have elapsed since prior treatment with a monoclonal antibody. 6. XRT: At least 14 days since the last treatment except for radiation delivered with palliative intent to a non-target site. 7. Stem Cell Transplant: 1. Allogeneic: No evidence of active graft vs. host disease 2. Allo/Auto: ≥ 2 months must have elapsed since transplant. 8. MIBG Therapy: At least 8 weeks since treatment with MIBG therapy
• Subjects must have a Lansky or Karnofsky Performance Scale score of 60% or higher.
• Life expectancy > 2 months
• All clinical and laboratory studies for organ functions to determine eligibility must be performed within 7 days prior to first dose of study drug unless otherwise indicated below.
• Subjects must have adequate organ functions at the time of registration:
• Hematological: Total absolute neutrophil count ANC ≥750/μL
• Liver: Subjects must have adequate liver function as defined by AST and ALT <5x upper limit of normal (Normal=45), Bilirubin <1.5x upper limit normal (Normal=1.0). Normal PT, PTT, fibrinogen.
• Renal: Adequate renal function defined as (perform one of the following): Creatinine clearance or radioisotope GFR 70 mL/min/1.73 m2 or greater or a serum creatinine based on age/gender
• Females of childbearing potential must have a negative pregnancy test. Patients of childbearing potential must agree to use an effective birth control method. Female patients who are lactating must agree to stop breast-feeding.
• Written informed consent in accordance with institutional and FDA guidelines must be obtained from all subjects (or patients' legal representative).
• BSA of <0.25 m2.
• Subjects that received DFMO at a dose higher than 1000mg/m2 BID prior to this study are not eligible.
• Subjects that received a dose of DFMO in combination with etoposide are not eligible.
• Investigational Drugs: Subjects who are currently receiving another investigational drug are excluded from participation.
• Anti-cancer Agents: Subjects who are currently receiving other anticancer agents are not eligible. Subjects must have fully recovered from hematological and bone marrow suppression effects of prior chemotherapy.
• Infection: Subjects who have an uncontrolled infection are not eligible until the infection is judged to be well controlled in the opinion of the investigator.
• Subjects who, in the opinion of the investigator, may not be able to comply with the safety monitoring requirements of the study, or in whom compliance is likely to be suboptimal, should be excluded.

• Female or male subject ≥ 18 years and ≤ 85 years at screening
• Diagnosis of lower limb spasticity with or without upper limb spasticity of the same body side caused by stroke or traumatic brain injury
• Disabling ankle flexor spasticity presenting as pes equinus or pes equinovarus
• Modified Ashworth Scale-Bohannon [MAS] score of 2 or 3 points in the ankle plantar flexor of the target lower limb (supine position, knee extended)
• Minimum passive range of motion in ankle of the target lower limb (supine position, knee extended): 10°dorsiflexion and 20°plantarflexion
• At least 4 months since last botulinum neurotoxin [BoNT] injection for treatment of spasticity or any other condition
• For subjects receiving anticoagulation therapy, the investigator confirms and documents that the subject has an:
• Activated partial thromboplastin time [aPTT] ≤ 80 seconds (subjects on dabigatran or other direct thrombin inhibitors) or
• International normalized ratio [INR] value of ≤ 2.5 (subjects on coumarins or other anticoagulants monitored by INR)
• Generalized disorders of muscle activity (e.g. myasthenia gravis, Lambert Eaton syndrome, amyotrophic lateral sclerosis) or any other significant peripheral neuromuscular dysfunction which might interfere with the study
• Bilateral lower limb paresis/paralysis/spasticity or tetraparesis/paralysis/spasticity
• Body weight < 50 kg
• Severe atrophy of the target limb muscles
• Previous, ongoing or planned treatments of spasticity with intrathecal baclofen
• Previous, ongoing, or planned treatments of spasticity in the target lower limb with any of the following procedures: Surgical Intervention; Alcohol or phenol block; Muscle afferent block
• Physiotherapy or use of orthoses or splints at the target limb initiated less than 4 weeks before screening or expected to change during the double blind phase of the study
• Current or planned treatment with parenterally administered drugs that interfere with neuromuscular transmission (e.g. intrathecal baclofen, tubocurarine type muscle relaxants used in anesthesia), or local anesthetics in the treated region within 2 weeks prior to screening
• Infection or inflammation at the injection sites
• Subjects with presence or history of aspiration pneumonia, recurrent lower respiratory tract infections, or compromised respiratory function as per investigator's clinical judgment
• Pregnancy (as verified by a positive pregnancy test) or breast feeding

• Be male at any age.
• Be scheduled to undergo surgery, chemotherapy, drug treatment and/or radiation for the treatment or prevention of a medical condition or malignancy with risk of causing permanent and complete loss of subsequent testicular function.
• Or, have a medical condition or malignancy that requires removal of all or part of one or both testicles.
• Have newly diagnosed or recurrent disease. Those who were not enrolled at the time of initial diagnosis (i.e., patients with recurrent disease) are eligible if they have not previously received therapy that is viewed as likely to result in complete and permanent loss of testicular function.
• Have two testicles if undergoing elective removal of all or part of a testicle for fertility preservation only. Note: removal of both testicles will limit fertility preservation options.
• Sign an approved informed consent and authorization permitting the release of personal health information. The patient and/or the patient's legally authorized guardian must acknowledge in writing that consent for specimen collection has been obtained, in accordance with institutional policies approved by the U.S. Department of Health and
• Consent for serum screening tests for infectious diseases [HIV-1, HIV-2, Hepatitis B, Hepatitis C], to be performed at the time of testicular tissue harvesting.
• Undergo a full history and physical examination and obtain standard pre-operative clearance (based on the most recent ACC/AHA Guideline for Perioperative Cardiovascular Evaluation for Noncardiac Surgery) as determined by their primary surgeon.
• Participating in long term follow-up is a requirement of the protocol.
• Diagnosed with psychological, psychiatric, or other conditions which prevent giving fully informed consent.
• Diagnosed with an underlying medical condition that significantly increases their risk of complications from anesthesia and surgery.

1. At least 18 years of age at time of screening. 2. Ability to understand the purposes and risks of the study and has signed a written informed consent document approved by the site-specific IRB. 3. Subject has proven and documented LM that meets the requirements for the study: • EANO-ESMO Clinical Practice Guidelines Type 1 and 2 (with the exception of 2D) LM of any primary type. 4. Karnofsky performance status of 60 to 100 5. Acceptable liver function:
• Bilirubin ≤ 1.5 times upper limit of normal
• AST (SGOT) and ALT (SGPT) ≤ 3.0 times upper limit of normal for subjects with normal liver. * AST (SGOT) and ALT (SGPT) ≤ 5.0 times upper limit of normal for subjects with liver metastasis
• Acceptable renal function with serum creatinine ≤ 2 times upper limit of normal 6. Acceptable hematologic status (without hematologic support):
• ANC ≥1000 cells µL
• Platelet count ≥75,000/µL
• Hemoglobin ≥9.0 g/dL 7. All women of childbearing potential must have a negative serum pregnancy test at screening. Male and female subjects must agree to use effective means of contraception (for example, surgical sterilization or the use of barrier contraception with either a condom or diaphragm in conjunction with spermicidal gel or an IUD) with their partner from entry into the study through 6 months after the last dose. 8. Subjects with a creatinine clearance greater than or equal to 60 mL/min (using the Cockcroft-Gault Equation) for males and females. 1. The subject has not recovered to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE v5.0 Grade ≤ 1 from AEs (except alopecia, anemia and lymphopenia) due to antineoplastic agents, investigational drugs, or other medications that were administered prior to study. 2. Obstructive or symptomatic communicating hydrocephalus 3. Ventriculo-peritoneal or ventriculo-atrial shunts without programable valves or contraindications to placement of Ommaya reservoir 4. Females of childbearing potential who are pregnant, breast feeding, or may possibly be pregnant without a negative serum pregnancy test 5. Serious intercurrent illness, such as progressive systemic (extra leptomeningeal) disease, clinically significant cardiac arrhythmias, uncontrolled systemic infection, symptomatic congestive heart failure or unstable angina pectoris within 3 months prior study drug, myocardial infarction, stroke, transient ischemic attack within 6 months, seizure disorder with any seizure occurring within 14 days prior to consenting or encephalopathy 6. Active severe non hematologic organ toxicity such as renal, cardiac, hepatic, pulmonary, or gastrointestinal systemic toxicity grade 3 or above. 7. Significant coagulation abnormalities such as inherited bleeding diathesis or acquired coagulopathy with unacceptable risks of bleeding. 8. Patients who had any dose to the spinal cord or whole brain radiation therapy, regardless of when the radiation treatment was delivered. 9. Myelopathy following spinal irradiation greater than 3 weeks prior to the first dose of 186RNL. 10. Systemic chemotherapeutic agents with CNS penetration (such as temozolomide, carmustine, lomustine, capecitabine, carboplatin, vinorelbine, bevacizumab, irinotecan or topotecan) unless they develop or have progressive or persistent leptomeningeal metastases while on these agents. 11. Systemic therapy (including investigational agents and small-molecule kinase inhibitors) within 14 days or 5 half-lives, whichever is shorter, prior first dose of study drug (186RNL). 12. Nitrosoureas or mitomycin C within 42 days, or metronomic/protracted low-dose chemotherapy within 14 days, or other cytotoxic chemotherapy within 28 days, prior to first dose of study drug (186RNL). 13. Impaired CSF Flow Study performed on Day -4 to Day -2 based on study imaging and as determined by the investigator.

Key Participants eligible for inclusion in this study must meet all of the following criteria: 1. Signed informed consent must be obtained prior to participation in the study 2. Age 18-35 years Patients in the healthy control arm eligible for inclusion must fulfill the following criteria: 3. Able to obtain MRI (HC with abnormal MRI at Screening will be excluded) and use wearable device 4. Able to provide blood sample (no CSF will be collected in HC) Patients in the ofatumumab-treated arm eligible for inclusion must fulfill the following criteria: 5. Diagnosis of RRMS per McDonald Criteria (2010/2017) 6. Within 6 months of diagnosis of clinically definite MS (CDMS) 7. EDSS 0-3.0 (Inclusive) 8. Treatment-naïve to MS DMT 9. Able to obtain MRI and attend study visits at sites 10. Able to use wearable device 11. Able to provide blood sample (and CSF for sub-group n=15) Key Participants in the healthy control arm meeting any of the following criteria are not eligible for inclusion in this study: 1. Confounding medical condition as determined by the investigator RRMS patients fulfilling any of the following exclusion criteria are not eligible for inclusion in this study: 2. Diseases other than multiple sclerosis responsible for the clinical or MRI presentation 3. Patients with neuromyelitis optica, Radiologic/ Clinically Isolated Syndrome, Secondary Progressive or Primary Progressive MS diagnosis 4. Use of experimental or investigational drugs for MS 5. Previous use of Disease Modifying Therapy (DMT) or chemotherapeutic medications for MS 6. Relapse between screening and Baseline visits 7. Known sensitivity to gadolinium; patients with chronic, severe kidney disease 8. Known history of hypersensitivity to any of the study treatments or its excipients or to drugs of similar chemical classes 9. CNS anomalies that are better accounted for by another disease process or MRI anomalies causing clinically apparent impairments 10. Known active malignancies 11. Pregnant or nursing (lactating) women 12. Females of childbearing potential (all women physiologically capable of becoming pregnant) should use effective contraception while receiving ofatumumab and for 6 months after the last treatment of ofatumumab 13. Patients with an active chronic disease (or stable but treated with immune therapy) of the immune system other than MS or with immunodeficiency syndrome 14. Patients with active infections including systemic bacterial, viral (including SARS-CoV-2/COVID-19) or fungal infections, or known to have AIDS or to test positive for HIV antibody at Screening 15. Patients with neurological findings consistent with Progressive Multifocal Leukoencephalopathy (PML), or confirmed PML 16. Patients with IgG or IgM levels below LLN at Screening 17. Patients that have received any live or live-attenuated vaccines within 4 weeks prior to first dose of study drug administration 18. Patients at risk of developing or having reactivation of hepatitis

• >= 4 and < 18 years at time of study entry
• Patients must weigh 15 kg or greater at time of study entry
• Newly diagnosed or recurrent primary brain tumors that have not received prior cranial radiotherapy
• Planned focal, cranial or craniospinal radiation treatment for a primary brain tumor
• The patient must have receptive and expressive language skills in English, French or Spanish since the neurocognitive function and quality of life (QOL) assessment instruments are available in these languages only
• 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:
• Age: 4 to < 6 years; Maximum serum creatinine (mg/dL): 0.8 male; 0.8 female
• Age: 6 to < 10 years; Maximum serum creatinine (mg/dL): 1 male; 1 female
• Age: 10 to < 13 years; Maximum serum creatinine (mg/dL): 1.2 male; 1.2 female
• Age: 13 to < 16 years; Maximum serum creatinine (mg/dL): 1.5 male; 1.4 female
• Age: >= 16 years; Maximum serum creatinine (mg/dL): 1.7 male; 1.4 female
• Total bilirubin =< 1.5 x upper limit of normal (ULN) for age
• Serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) =< 135 U/L
• Note: For the purpose of this study, the ULN for SGPT (ALT) has been set to the value of 45 U/L
• The patient must be able to undergo magnetic resonance imaging
• 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
• Life expectancy of less than 18 months
• Pre-existing conditions:
• Any contraindication or allergy to memantine
• Intractable seizures while on adequate anticonvulsant therapy, defined as more than one seizure per month for the past 2 months or since initiating anticonvulsant therapy
• Co-morbid systemic illnesses, psychiatric conditions, social situations, or other severe concurrent disease which, in the judgment of the investigator, would make the patient inappropriate for entry into this study or interfere significantly with the proper assessment of safety and toxicity of the prescribed regimens or would limit compliance with the study requirements
• Patients with a motor, visual, or auditory condition that precludes computerized neurocognitive assessments are not eligible to participate
• Patients with any medical condition or taking medications that lead to alterations of urine pH towards the alkaline condition (e.g., renal tubular acidosis, carbonic anhydrase inhibitors, sodium bicarbonate)
• Personal history of prior cranial or craniospinal radiotherapy is not allowed
• Note: Prior anti-cancer therapy including surgery, chemotherapy, targeted agents are allowed as per standard of care clinical treatment guidelines
• Female patients who are pregnant are excluded since fetal toxicities and teratogenic effects have been noted for the study drug. 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 do not agree to use an effective contraceptive method for the duration of their study participation

Inclusion Criteria for participants previously treated with SRP-5051:
•Has received prior SRP-5051 treatment in Part A of this study or in Study 5051-102 Exclusion Criteria for participants previously treated with SRP-5051 and new participants enrolling into Part B:
•Presence of other clinically significant illness, including cardiac, pulmonary, hepatic, renal, hematologic, immunologic, or behavioral disease, or infection or malignancy or any other condition that, in the Investigator's opinion, could interfere with participation in the trial. Inclusion Criteria for treatment-naïve participants enrolling into Part B:
• Has a genetic diagnosis of Duchenne muscular dystrophy (DMD) and an out-of-frame deletion mutation of the DMD gene amenable to exon 51-skipping treatment.
• Has been on a stable dose of oral corticosteroids for at least 12 weeks prior to study drug administration and the dose is expected to remain constant throughout the study (except for modifications to accommodate changes in weight), or has not received corticosteroids for at least 12 weeks prior to study drug administration.
• Has stable pulmonary function (forced vital capacity [FVC] ≥40% of predicted and no requirement for nocturnal ventilation). Exclusion Criteria for treatment-naive participants enrolling into Part B:
• History of hypomagnesemia within 12 weeks prior to Screening.
• Initiation or change of dosing (except for modifications to accommodate changes in weight or changes in standard of care) within 12 weeks prior to Screening for any of the following: angiotensin-converting enzyme inhibitors, angiotensin receptor-blocking agents, β-blockers, or potassium.
• Initiation or change of dosing within 12 weeks prior to Screening for over-the-counter preparations, such as herbal/nonherbal supplements, vitamins, minerals, and homeopathic preparations.
• Has a left ventricular ejection fraction (LVEF) <40.0% based on an echocardiogram (ECHO) performed within 12 weeks prior to Screening or at the Screening Visit.
• Treatment with any exon 51-skipping therapy within 4 weeks prior to Screening, or with any experimental gene therapy for the treatment of DMD at any time. Other inclusion/exclusion criteria apply.

Inclusion Criteria 1. Neonates or infants >33 weeks gestational age with NOWS who have withdrawal scores requiring morphine replacement therapy 2. Clinically stable or on minimal respiratory support (continuous positive airway pressure [CPAP], nasal cannula, or room air) 3. Stable neonates who are dependent on opioids following extracorporeal membrane oxygenation, severe illness, or brain injury will be included in this study as these neonates represent a population in which tAN could minimize withdrawal while not adding burden of pharmacotherapies 4. Congenital syndromes may be included if the infants do not have major, unrepaired anomalies Exclusion Criteria 1. Unstable infants or those requiring significant respiratory support 2. Repeated episodes of autonomic instability (apnea or bradycardia) which are not self-resolving 3. Major unrepaired congenital anomalies impacting respiratory or cardiovascular system 4. Cardiomyopathy 5. Abnormal ear anatomy preventing the device to fit 6. Infants diagnosed with iatrogenic NOWS without intrauterine exposure 7. Infants two weeks of age or older (after birth) 8. Neonates who have received more than 6 methadone doses or 24 hours of methadone dosing 9. Infants who are wards of the state 10. Participant has any other significant disease or disorder which, in the opinion of the Investigator, may either put the participants at risk because of participation in the trial, or may influence the result of the trial, or the participant's ability to participate in the trial

• Patients must be:
• < 12 months (< 365 days) of age at diagnosis with INRG stage L1; or
• < 18 months (< 547 days) of age at diagnosis with INRG stage L2 or stage Ms neuroblastoma/ganglioneuroblastoma
• Enrollment on ANBL00B1 or APEC14B1 is required for all newly diagnosed patients
• Patients must have newly diagnosed v-myc avian myelocytomatosis viral oncogene neuroblastoma derived homolog (MYCN) non-amplified neuroblastoma (International Classification of Diseases for Oncology [ICD-O] morphology 9500/3) or MYCN non-amplified ganglioneuroblastoma verified by histology
• Patients must meet the specified criteria for one of the treatment groups defined below; genomic features include MYCN gene amplification, segmental chromosome aberrations (somatic copy number loss at 1p, 3p, 4p, or 11q or somatic copy number gain at 1q, 2p, or 17q) and deoxyribonucleic acid (DNA) index
• "Favorable" genomic features are defined by one or more whole-chromosome gains or hyperdiploid tumor (DNA index > 1) in the absence of segmental chromosome aberrations as defined above
• "Unfavorable" genomic features are defined by the presence of any segmental chromosome aberration (somatic copy number loss at 1p, 3p, 4p, or 11q or somatic copy number gain at 1q, 2p, or 17q) or diploid tumor (DNA index = 1); this includes copy neutral loss of heterozygosity (LOH)
• Only patients with MYCN non-amplified tumors are eligible for this study
• Group A: patients < 12 months (< 365 days) of age with newly diagnosed INRG stage L1 neuroblastoma/ganglioneuroblastoma who meet the following criteria:
• Greatest tumor diameter < 5 cm of adrenal or non-adrenal origin
• Patients with non-adrenal primaries are eligible, but must have positive uptake on metaiodobenzylguanidine (MIBG) scan or elevated catecholamine metabolites (urine or serum) to support the diagnosis of neuroblastoma
• No prior tumor resection or biopsy
• Group A will be further split into two subsets, which are mutually exclusive, for statistical purposes
• Group A1:
• > 6 months and < 12 months of age with an adrenal primary tumor < 5 cm in greatest diameter OR
• Patients less than 6 months of age with an adrenal primary tumor > 3.1 and < 5 cm in greatest diameter OR
• < 12 months of age with a non-adrenal primary site < 5 cm in greatest diameter
• Group A2: =< 6 months of age with an adrenal primary site and tumor =< 3.1 cm in greatest diameter.
• Group B: patients < 18 months (< 547 days) of age with newly diagnosed INRG stage L2 neuroblastoma/ganglioneuroblastoma who meet the following criteria:
• No life threatening symptoms or no impending neurologic or other organ function compromise (e.g. epidural or intraspinal tumors with existing or impending neurologic impairment, periorbital or calvarial-based lesions with existing or impending cranial nerve impairment, anatomic or mechanical compromise of critical organ function by tumor [abdominal compartment syndrome, urinary obstruction, etc.]); horner syndrome is not considered neurologic compromise
• No prior tumor resection, tumor biopsy ONLY
• Only patients with both favorable histology and favorable genomic features will remain on study as part of Group B; the institution will be notified of histologic and genomic results within 3 weeks of specimen submission on ANBL00B1 or APEC14B1
• Group C: patients < 18 months (< 547 days) of age with newly diagnosed INRG stage Ms neuroblastoma/ganglioneuroblastoma
• No prior radiotherapy or chemotherapy, with the exception of dexamethasone, which is allowed
• 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
• Patients with MYCN amplified tumors are not eligible
• Group B and C patients who do not enroll on ANBL1232 within 4 weeks of definitive diagnostic procedure
• Group A and C patients, not required to undergo tumor biopsy, who do not enroll on ANBL1232 within 4 weeks of confirmatory imaging study

• Age -- Age ≤ 30 years at time of initial qualifying solid tumor diagnosis
• Diagnosis -- Histologic diagnosis of solid malignancy (excluding brain tumors and lymphoma) that meets at least one of the following criteria:
• Refractory, defined as tumor progression after initiation of standard first line therapy without having achieved a prior partial or complete remission OR Biopsy proven residual disease at the completion of planned standard initial front-line therapy.
• Recurrent, defined as tumor progression after achieving a prior partial or complete remission
• Newly diagnosed high risk disease, defined as having an expected event free survival of < 50% at 2 years.
• Lacks definitive diagnosis or classical genomic findings after histologic review and standard molecular testing (rare tumor group).
• Examples include (eligibility not limited to these examples):
• Histology typically associated with a fusion in which fusion is not detected.
• Ewing-like sarcoma
• Undifferentiated sarcoma
• Inflammatory myofibroblastic tumor without ALK fusion
• Infantile fibrosarcoma without NTRK fusion
• Specimen Samples
• Sufficient tumor specimen available to meet the minimum requirements for profiling from diagnosis or progression / recurrence --- OR
• Surgery / biopsy planned as part of clinical care that is anticipated to yield sufficient material to meet the minimum requirements for profiling; OR
• Patient has already had molecular profiling and patient has not yet started matched targeted therapy based on the report .
• No Therapy Planned -- Patients who have declined further anticancer therapy will be excluded.
• Performance Status -- Patients with Lansky (age < 16 years) or Karnofsky (age ≥16 years) score < 50 will be excluded.
• Life Expectancy -- Patients with anticipated life expectancy < 3 months will be excluded.

• Patient must be newly diagnosed or relapsed/progressed with a brain tumor that has not previously been treated with CRT
• Note: COG therapeutic study participation is not required for ACCL10P1 enrollment
• Patient enrollment must occur within 4 calendar months following completion of CRT
• Reminder: after patient enrollment, baseline testing followed by randomization must occur within 2-4 months after completion of CRT
• The patient must have an identified caregiver who is willing and able to oversee the training practice during the intervention period (ie, for 5-9 weeks starting approximately 3 months after completion of CRT)
• The patient must have access to a telephone and phone number where they can be reached
• The patient and caregiver must have reading, speaking and listening comprehension of English
• All patients and/or their parents or legal guardians must sign a written informed consent (patient assent is also recommended when applicable according to each institution's policy)
• All institutional, Food and Drug Administration (FDA), and National Cancer Institute (NCI) requirements for human studies must be met
• Patients with pontine glioma are not eligible
• Patients with an estimated survival of less than one year are not eligible
• Patients with a history of traumatic brain injury prior to tumor diagnosis are not eligible
• Patients with a motor, visual, or auditory handicap that prevents computer use (e.g., unresolved posterior fossa syndrome) are not eligible to participate in this trial
• Patients with full-scale intelligence quotient (IQ) < 70 per previous testing OR existing diagnosis of/educational classification as a student with an intellectual disability are not eligible

• Younger than 2 years (chronological age)
• Scheduled for anaesthesia that is expected to last at least 2 hours (and/or total operating room time is scheduled to be at least 2.5 hours)
• Has a legally acceptable representative capable of understanding the informed consent document and providing consent on the participant's behalf.
• Known neurologic, chromosomal or congenital anomaly which is likely to be associated with poor neurobehavioural outcome
• Existing diagnosis of behavioural or neurodevelopmental disability
• Prematurity (defined as < 36 weeks gestational age at birth)
• Birth weight less than 2 kg.
• Congenital cardiac disease requiring surgery
• Intracranial neurosurgery and intracranial craniofacial surgery (isolated cleft lip is not an exclusion)
• Previous cumulative exposure to general anaesthesia exceeding 2 hours
• Planned future cumulative exposure to anaesthesia exceeding 2 hours before the age of 3 years.
• Any specific contra-indication to any aspect of the protocol
• Previous adverse reaction to any anaesthetic
• Circumstances likely to make long term follow-up impossible
• Living in a household where the primary language spoken at home is not a language in which we can administer the Wechsler Preschool and Primary School Intelligence Scale
• Planned postoperative sedation with any agent except opioids (e.g. benzodiazepines, dexmedetomidine, ketamine, barbiturates, propofol, clonidine, chloral hydrate, and other non-opioid sedatives). For example if such sedation is planned for post-operative ventilation

• All patients must have a pathologically confirmed diagnosis of neuroblastoma, < 30.99 years of age and classified as high risk at the time of diagnosis. Exception: patients who are initially diagnosed as non-high-risk neuroblastoma, but later converted (and/or relapsed) to high risk neuroblastoma are also eligible.
• All patients must be in complete remission (CR): 1. No evidence of residual disease on scan 2. No evidence of disease metastatic to bone marrow.
• Specific Criteria by Stratum: Stratum 1/1B: All patients must have completed standard upfront therapy that replicates treatment which patients who were enrolled on ANBL0032 received, including: intensive induction chemotherapy and (if feasible) resection of primary tumor, followed by: consolidation with high-dose chemotherapy with stem cell transplant and radiotherapy, followed by: immunotherapy with Ch14.18/IL-2/GM-CSF (dinutuximab) and retinoic acid;. All subjects on Stratum 1/B must have also met the following criteria: • A pre-transplant disease status evaluation that met International Neuroblastoma Response Criteria (INRC) for CR (complete response), VGPR (very good partial response), or PR (partial response) for primary site, soft tissue metastases and bone metastases. Patients who meet those criteria must also meet the protocol-specified criteria for bone marrow response prior to transplant as outlined below: No more than 10% tumor involvement (based on total nucleated cellular content) seen on any specimen from a bilateral bone marrow aspirate/biopsy. Stratum 2: Neuroblastoma that is in first complete remission following standard upfront therapy different from that described for Stratum 1. Stratum 3: Neuroblastoma that failed to have a response of at least PR following induction chemotherapy and surgical resection of the primary tumor, but that has achieved CR following additional therapy. Stratum 4: Patients who have achieved a second or subsequent CR following relapse(s).
• Pre-enrollment tumor survey: Prior to enrollment on this study, a determination of mandatory disease staging must be performed:
• Tumor imaging studies including
• Bilateral bone marrow aspirates and biopsy
• This disease assessment is required for eligibility and preferably should be done within 2 weeks prior to enrollment, but must be done within a maximum of 4 weeks before enrollment.
• Timing from prior therapy: Stratum 1/1B: Enrollment no later than 60 days after completion of upfront therapy, (last dose of cis-retinoic acid) with a maximum of 6 cycles of cis-retinoic acid maintenance therapy. Stratum 2, 3 and 4: Enrollment no later than 60 days from last dose of the most recent therapy.
• Patients must have a Lansky or Karnofsky Performance Scale score of > 50% and patients must have a life expectancy of ≥ 2 months.
• All clinical and laboratory studies for organ functions to determine eligibility must be performed within 7 days prior to enrollment unless otherwise indicated below.
• Patients must have adequate organ functions at the time of registration:
• Hematological: Total absolute phagocyte count ≥1000/μL
• Liver: Subjects must have adequate liver function
• Renal: Adequate renal function
• Females of childbearing potential must have a negative pregnancy test. Patients of childbearing potential must agree to use an effective birth control method. Female patients who are lactating must agree to stop breast-feeding.
• Written informed consent in accordance with institutional and FDA (food and drug administration) guidelines must be obtained from all subjects (or patients' legal representative).
• BSA (Body Surface Area) of <0.25 m2.
• Investigational Drugs: Subjects who are currently receiving another investigational drug are excluded from participation.
• Anti-cancer Agents: Subjects who are currently receiving other anticancer agents are not eligible. Subjects must have fully recovered from hematological and bone marrow suppression effects of prior chemotherapy.
• Infection: Subjects who have an uncontrolled infection are not eligible until the infection is judged to be well controlled in the opinion of the investigator.
• Subjects who, in the opinion of the investigator, may not be able to comply with the safety monitoring requirements of the study, or in whom compliance is likely to be suboptimal, should be excluded.

• Patients must have had histologic verification of neuroblastoma or ganglioneuroblastoma or demonstration of neuroblastoma cells in the bone marrow with elevated urinary catecholamines (i.e. > 2 x upper limit of normal [ULN]), at the time of initial diagnosis.
• For the purposes of this study, aggressive multidrug chemotherapy is defined as chemotherapy including 2 or more agents that must include an alkylating agent and a platinum-containing compound as intended to treat high-risk disease. The doses of chemotherapy must be comparable to those used in frontline high-risk neuroblastoma therapies (examples include A3973, ANBL0532, ANBL09P1, ANBL12P1, and ANBL1531). Patients must have ONE of the following:
• First episode of recurrent high-risk disease following completion of aggressive multi-drug frontline high-risk therapy.
• First episode of progressive high-risk disease during aggressive multi-drug frontline therapy.
• Primary resistant/refractory disease (less than partial response by International Neuroblastoma Response Criteria [INRC]) detected at the conclusion of at least 4 cycles of aggressive multidrug induction chemotherapy on or according to a high-risk neuroblastoma protocol (examples include A3973, ANBL0532, ANBL09P1, ANBL12P1, ANBL1531, etc.).
• Patients must have at least ONE of the following at the time of enrollment:
• Measurable tumor on magnetic resonance imaging (MRI) or computed tomography (CT) scan. Measurable is defined as >= 10 mm in at least one dimension on spiral/helical CT that is metaiodobenzylguanidine (MIBG) avid or demonstrates increased fludeoxyglucose F-18 (FDG) uptake on positron emission tomography (PET) scan.
• MIBG-avid lesion detected on MIBG scan with positive uptake at a minimum of one site. This site must represent disease recurrence after completion of therapy, progressive disease on therapy, or refractory disease during induction.
• Patients with resistant/refractory soft tissue disease that is not MIBG avid or does not demonstrate increased FDG uptake on PET scan must undergo biopsy to document the presence of viable neuroblastoma. Biopsy is not required for patients who have a new site of soft tissue disease (radiographic evidence of disease progression) regardless of whether progression occurs while receiving therapy or after completion of therapy.
• Patients with bone marrow disease only will be eligible if they have more than 5% disease involvement (documented neuroblastoma cells) in at least one sample from bilateral bone marrow biopsies.
• Note: Patients with elevated catecholamines (i.e. > 2 x ULN) only are NOT eligible for this study.
• Patients must have a performance status corresponding to Eastern Cooperative Oncology Group (ECOG) scores of 0, 1 or 2. Use Karnofsky for patients > 16 years of age and Lansky for patients =< 16 years of age.
• Primary refractory/resistant patients must have received at least 4 cycles of frontline high-risk chemotherapy. Frontline therapy may also have included surgery, chemotherapy, autologous stem cell transplantation (SCT) +/- MIBG, immunotherapy, radiotherapy, and retinoids but must NOT have received second line therapy for resistant/refractory, relapsed, or progressive disease. Patients who received intensified therapy for poor induction response or refractory disease (e.g. MIBG) will be considered to have received second line therapy and will not be eligible.
• At least 14 days must have elapsed since completion of myelosuppressive therapy.
• 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.
• No interim time prior to study entry is required following prior radiation therapy (RT) for non-target lesions. However, patients must not have received radiation for a minimum of 4 weeks prior to study entry at the site of any lesion that will be identified as a target lesion to measure tumor response. Lesions that have been previously radiated cannot be used as target lesions unless there is radiographic evidence of progression at the site following radiation or a biopsy done following radiation shows viable neuroblastoma. Palliative radiation while on study is not permitted.
• Patients are eligible >= 6 weeks after autologous stem cell transplants or stem cell infusions (including stem cell infusions given as supportive care following 131 I-MIBG therapy) as long as hematologic and other eligibility criteria have been met.
• Patients are eligible >= 6 weeks after therapeutic 131 I-MIBG provided that all other eligibility criteria are met.
• Subjects who have previously received anti-GD2 monoclonal antibodies with or without retinoids for biologic therapy are eligible unless they have had progressive disease while receiving prior anti-GD2 therapy or progressed/relapsed within 3 months of receiving anti-GD2 therapy. However, eligible patients may NOT have received anti-GD2 monoclonal antibodies in combination with chemotherapy.
• Subjects who have received autologous marrow infusions or autologous stem cell infusions that were purged using monoclonal antibody linked to beads are eligible.
• Subjects who have previously received DFMO are eligible for this study provided they have not had progressive disease while receiving DFMO or progressed/relapsed within 3 months of completing DFMO.
• Patients must not have received long-acting myeloid growth factors (e.g. pegfilgrastim) within 14 days of entry on this study. Seven days must have elapsed since administration of a short-acting myeloid growth factor.
• For patients with solid tumors (without marrow involvement) including status post SCT: peripheral absolute neutrophil count (ANC) >= 750/uL (within 7 days prior to enrollment).
• For patients with solid tumors (without marrow involvement) including status post SCT: platelet count >= 75,000/uL (transfusion independent) (within 7 days prior to enrollment).
• Patients known to have bone marrow involvement with neuroblastoma are eligible provided that minimum ANC and transfusion independent platelet count criteria are met (as above). However, these patients are not evaluable for hematological toxicity.
• Creatinine clearance or radioisotope GFR >= 70 mL/min/1.73 m^2 or a serum creatinine based on age/gender as follows:
• 1 to < 2 years (male 0.6 mg/dL, female 0.6 mg/dL)
• 2 to < 6 years (male 0.8 mg/dL, female 0.8 mg/dL)
• 6 to < 10 years (male 1 mg/dL, female 1 mg/dL)
• 10 to < 13 years (male 1.2 mg/dL, female 1.2 mg/dL)
• 13 to < 16 years (male 1.5 mg/dL, female 1.4 mg/dL)
• >= 16 years (male 1.7 mg/dL, female 1.4 mg/dL) (within 7 days prior to enrollment).
• Total bilirubin =< 1.5 x ULN for age (within 7 days prior to enrollment).
• Serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase [ALT]) =< 5.0 x ULN for age (=< 225 U/L). For the purpose of this study, the ULN for SGPT is 45 U/L (within 7 days prior to enrollment).
• Shortening fraction of >= 27% by echocardiography (ECHO) (within 7 days prior to enrollment).
• Ejection fraction of >= 50% by ECHO or gated radionuclide study (within 7 days prior to enrollment).
• No evidence of dyspnea at rest, no exercise intolerance, no chronic oxygen requirement, and room air pulse oximetry > 94% if there is a clinical indication for pulse oximetry. Normal pulmonary function tests in patients who are capable of cooperating with testing (including diffusion capacity of the lung for carbon monoxide [DLCO)] are required if there is a clinical indication for determination. For patients who do not have respiratory symptoms, full pulmonary function tests (PFTs) are NOT required.
• Patients with a history of central nervous system (CNS) disease must have no clinical or radiological evidence of active CNS disease at the time of study enrollment.
• Patients with seizure disorders may be enrolled if seizures are well controlled on anti-convulsants.
• CNS toxicity =< grade 2.
• Men and women of childbearing potential and their partners must agree to use adequate contraception while enrolled on this study. Based on the established teratogenic potential of alkylating agents, pregnant women will be excluded from this study. Because of potential risks to breastfed infants due to drug metabolites that could be excreted in breast milk, female patients who are lactating must agree to stop breastfeeding or will otherwise be excluded from this study. Females of childbearing potential must have a negative pregnancy test to be eligible for this study.
• Patients with only elevated catecholamines (i.e. > 2 x ULN) are NOT eligible for this study.
• Patients must have been off pharmacologic doses of systemic steroids for at least 7 days prior to enrollment. Patients who require or are likely to require pharmacologic doses of systemic corticosteroids while receiving treatment on this study are ineligible. The only exception is for patients known to require 2 mg/kg or less of hydrocortisone (or an equivalent dose of an alternative corticosteroid) as premedication for blood product administration in order to avoid allergic transfusion reactions. The use of conventional doses of inhaled steroids for the treatment of asthma is permitted, as is the use of physiologic doses of steroids for patients with known adrenal insufficiency. Patients on any other immunosuppressive medications (e.g. cyclosporine, tacrolimus) are not eligible.
• Patients must not have received prior treatment with irinotecan and temozolomide.
• Patients must not have received enzyme-inducing anticonvulsants including phenytoin, phenobarbital, or carbamazepine for at least 7 days prior to study enrollment. Patients receiving non-enzyme inducing anticonvulsants such as gabapentin, valproic acid, or levetiracetam will be eligible.
• Patients who have received drugs that are strong inducers or inhibitors of CYP3A4 within 7 days prior to study enrollment are not eligible.
• Patients must not have been diagnosed with myelodysplastic syndrome or with any malignancy other than neuroblastoma.
• Patients with symptoms of congestive heart failure are not eligible.
• Patients must not have >= grade 2 diarrhea.
• Patients who are unable to tolerate oral/nasogastric/gastrostomy medications will not be eligible for this trial. Additionally, patients with significant malabsorption will not be eligible for this trial.
• Patients must not have uncontrolled infection.
• Patients with a history of grade 4 allergic reactions to anti-GD2 antibodies or reactions that required permanent discontinuation of the anti-GD2 therapy are not eligible.
• Patients with a significant intercurrent illness (any ongoing serious medical problem unrelated to cancer or its treatment) that is not covered by the detailed exclusion criteria and that is expected to interfere with the action of study agents or to significantly increase the severity of the toxicities experienced from study treatment are not eligible.

PRE-REGISTRATION ELIGIBILITY CRITERIA (ALL PATIENTS) • Tissue available for biomarker testing (any brain metastasis tissue and extracranial site from any prior resection or biopsy). REGISTRATION ELIGIBILITY CRITERIA (ALL PATIENTS)
• Participants must have histologically confirmed parenchymal metastatic disease to the brain from any solid tumor. Note: this includes patients that have controlled extracranial disease with progressive intracranial metastasis, as well as patients that have progressive intracranial and extracranial disease.
• New or progressive brain metastases are defined as any one of the following:
• Untreated measurable lesions in patients who have received surgery and/or stereotactic radiosurgery (SRS) to one or more other lesions.
• Progressive measurable lesions after radiation, surgery, or prior systemic therapy
• Residual or progressive lesions after surgery if asymptomatic.
• Patients who have had prior whole-brain radiotherapy (WBRT) and/or SRS and then whose lesions have progressed by BM-RANO criteria or there are new lesions, are eligible. Lesions treated with SRS may be eligible if there is unequivocal evidence of progression. For patients with NTRK or ROS1 mutations, entrectinib may be used for newly diagnosed brain metastases.
• Patients who have not previously been treated with cranial radiation (e.g. WBRT or SRS) are eligible, but such patients must be asymptomatic or neurologically stable from their CNS metastases.
• Measurable CNS disease (=> 10 mm).
• Ability to obtain magnetic resonance imaging (MRI)s with contrast
• No surgery within 2 weeks prior to or after registration.
• No chemotherapy within 14 days prior to registration (Note: for abemaciclib arm, a 21-day chemotherapy washout is required).
• For melanoma, patients must have progressed after prior immune checkpoint blockade or for BRAF positive melanoma, BRAF/MEK inhibitors.
• For lung cancer, EGFR mutant patients must have failed EGFR therapies
• For HER2-positive breast cancer patients (regardless of ER/PR status), patients must have received at least one prior HER-2 directed therapy in the metastatic setting.
• For triple negative breast cancer (TNBC), patients must have received at least one chemotherapy in the metastatic setting.
• For estrogen receptor (ER) and/or progesterone receptor (PR)+ HER2-negative breast cancer, patients must have received at least one endocrine therapy in the metastatic setting.
• Patients who have received prior treatment with any of the targeted treatments on this study are not eligible for that specific treatment arm(s), but could be eligible for other arms (e.g., a patient who has had prior treatment with abemaciclib would not be eligible for the abemaciclib arm, but could be eligible for another arm).
• Presence of clinically actionable alteration in NTRK, ROS1, or CDK pathway or PI3K pathway in both a brain metastasis and extracranial site per central review.
• Not pregnant and not nursing, because this study involves investigational agents whose genotoxic, mutagenic and teratogenic effects on the developing fetus and newborn are unknown. Therefore, for women of childbearing potential only, a negative pregnancy test done =< 14 days prior to registration is required (Note: for abemaciclib arm, pregnancy test is required =< 7 days prior to registration).
• No known current diffuse leptomeningeal involvement (diffuse defined as leptomeningeal involvement throughout the CNS axis; if there is documented positive CSF cytology, patient is ineligible).
• Eastern Cooperative Oncology Group (ECOG) performance status 0-2.
• Adequate organ function.
• Absolute neutrophil count (ANC) >= 1,500/mm^3.
• Platelet count >= 100,000/mm^3.
• Total bilirubin =< 1.5 x upper limit of normal (ULN) except in patients with Gilbert's disease. Patients with Gilbert's syndrome with a total bilirubin ≤2.0 times ULN and direct bilirubin within normal limits are permitted.
• Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) =< 2.5 x upper limit of normal (ULN).
• Creatinine =< 1.5 mg/dL OR calculated (Calc.) creatinine clearance > 45 mL/min.
• No uncontrolled medical comorbidities per investigator discretion (e.g. interstitial lung disease, severe dyspnea at rest or requiring oxygen therapy, severe renal impairment [e.g. estimated creatinine clearance <30ml/min], history of major surgical resection involving the stomach or small bowel, or preexisting Crohn's disease or ulcerative colitis or a preexisting chronic condition resulting in baseline Grade 2 or higher diarrhea)
• Radiation to symptomatic non-target sites within neural axis is allowed prior to registration without washout (provided there is at least one untreated target lesion for measurement on study and radiation is completed prior to registration).
• Concurrent systemic corticosteroids are allowed if stable dose of dexamethasone for 7 days prior to registration. Baseline doses and changes in steroid dosing will be captured.
• No concurrent administration of anticancer therapies (except for endocrine therapy or continuation of hormonal therapy or trastuzumab in breast cancer patients). No chemotherapy, targeted therapy or immunotherapy within 14 days prior to entering the study (Note: For abemaciclib arm, a 21-day chemotherapy washout is required).
• Chronic concomitant treatment with strong inhibitors of CYP3A4 is not allowed on this study. Patients on strong CYP3A4 inhibitors must discontinue the drug 14 days prior to registration on the study.
• Chronic concomitant treatment with strong CYP3A4 inducers is not allowed. Patients must discontinue the drug 14 days prior to the start of study treatment. ADDITIONAL REGISTRATION ELIGIBILITY CRITERIA FOR PAXALISIB ARM
• Urine protein to creatinine (UPC) ratio < 1 or urine protein =< 1.
• Recent acute myocardial infarction in the last 6 months or current angina pectoris are excluded. Patients with symptomatic bradycardia should have an electrocardiogram at baseline. If QT interval > 470 msec, the patient is excluded.
• Patients with uncontrolled type I or II diabetes mellitus should be excluded. Uncontrolled diabetes is defined as glycosylated hemoglobin (HbA1c) > 9% in addition to fasting glucose > 140 mg/dL on at least 2 occasions within 14 days prior to registration. ADDITIONAL REGISTRATION ELIGIBILITY CRITERION FOR ENTRECTINIB ARM • Concurrent use of H2 receptor antagonists, receptor antagonists, proton pump inhibitors (PPIs), and/or antacids are prohibited. ADDITIONAL REGISTRATION ELIGIBILITY CRITERION FOR ABEMACICLIB ARM
• Hemoglobin >= g/dL. Patients may receive erythrocyte transfusions to achieve this hemoglobin level at the discretion of the investigator. Initial treatment must not begin earlier than the day after the erythrocyte transfusion.
• Patients who received chemotherapy must have recovered (Common Terminology Criteria for Adverse Events [CTCAE] Grade ≤1) from the acute effects of chemotherapy except for residual alopecia or Grade 2 peripheral neuropathy prior to registration. A washout period of at least 21 days is required between last chemotherapy dose and registration (provided the patient did not receive radiotherapy).
• Patients who received adjuvant radiotherapy must have completed and fully recovered from the acute effects of radiotherapy. A washout period of at least 14 days is required between end of radiotherapy and registration.
• Breast cancer patients who have received ribociclib or palbociclib are eligible as long as there is documentation of CDK4/6 pathway alteration on a biopsy or resection at the point of progression post-ribociclib or palbociclib.
• For females of childbearing potential: A female of childbearing potential, must have a negative serum pregnancy test within 7 days prior to registration and agree to use a highly effective contraception method during the treatment period and for 3 weeks following the last dose of abemaciclib. Contraceptive methods may include an intrauterine device [IUD] or barrier method. If condoms are used as a barrier method, a spermicidal agent should be added as a double barrier protection. Cases of pregnancy that occur during maternal exposures to abemaciclib should be reported. If a patient or spouse/partner is determined to be pregnant following abemaciclib initiation, she must discontinue treatment immediately. Data on fetal outcome and breast-feeding are to be collected for regulatory reporting and drug safety evaluation.
• Patients with active bacterial infection (requiring intravenous [IV] antibiotics at time of initiating study treatment), fungal infection, or detectable viral infection (such as known human immunodeficiency virus positivity or with known active hepatitis B or C [for example, hepatitis B surface antigen positive] are excluded. Screening is not required for enrollment.
• Patients with personal history of any of the following conditions: syncope of cardiovascular etiology, ventricular arrhythmia of pathological origin (including, but not limited to, ventricular tachycardia and ventricular fibrillation), or sudden cardiac arrest, are excluded.

1. At least 18 years of age 2. Ability to understand the purposes and risks of the study and has signed a written informed consent form approved by the investigator's IRB/Ethics Committee 3. Histologically confirmed glioma 4. Progression by Response Assessment in Neuro-Oncology (RANO) criteria following standard treatment options with known survival benefit (Temozolomide, Radiation, and Tumor Treating Fields [unless unwilling]) 5. Patients who receive treatment with antiepileptic medications must have a two week history of stable dose of antiepileptic without seizures prior to dosing 6. Patients with corticosteroid requirements to control cerebral edema must be maintained at a stable or decreasing dose for a minimum of two weeks without progression of clinical symptoms 7. A volume of enhancing tumor which falls within the treatment field volume being evaluated in the respective cohort (see 4.1 Design) 8. Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2 9. Life expectancy of at least 2 months 10. Acceptable liver function:
• Bilirubin ≤ 1.5 times upper limit of normal
• AST (SGOT) and ALT (SGPT) ≤ 3.0 times upper limit of normal (ULN); 11. Acceptable renal function:
• Serum creatinine ≤1.5xULN 12. Acceptable hematologic status (without hematologic support):
• ANC ≥1000 cells/uL
• Platelet count ≥100,000/uL
• Hemoglobin ≥9.0 g/dL 13. All women of childbearing potential must have a negative serum pregnancy test and male and female subjects must agree to use effective means of contraception (surgical sterilization or the use or barrier contraception with either a condom or diaphragm in conjunction with spermicidal gel or an IUD) with their partner from entry into the study through 6 months after the last dose For part 2: 14. Bevacizumab naïve glioblastoma with no more than 1 recurrence 1. The subject has evidence of acute intracranial or intratumoral hemorrhage either by MRI or computerized tomography (CT) scan. Subjects with resolving hemorrhage changes, punctate hemorrhage, or hemosiderin are eligible. 2. The subject is unable to undergo MRI scan (eg, has pacemaker). 3. The subject has not recovered to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) v4.0 Grade ≤ 1 from AEs (except alopecia, anemia and lymphopenia) due to surgery, antineoplastic agents, investigational drugs, or other medications that were administered prior to study. 4. The subject is pregnant or breast-feeding. 5. The subject has serious intercurrent illness, as determined by the treating physician, that would compromise either patient safety or study outcomes such as:
• hypertension (two or more blood pressure readings performed at screening of > 150 mmHg systolic or > 100 mmHg diastolic) despite optimal treatment
• Non-healing wound, ulcer, or bone fracture
• Clinically significant cardiac arrhythmias
• Untreated hypothyroidism
• Uncontrolled systemic infection
• Symptomatic congestive heart failure or unstable angina pectoris within 3 months prior study drug
• Myocardial infarction, stroke, transient ischemic attack within 6 months
• Known active malignancy (other than glioma) except non-melanoma skin cancer or carcinoma in-situ in the cervix 6. The subject has inherited bleeding diathesis or coagulopathy with the risk of bleeding 7. The subject has received any of the following prior anticancer therapy:
• Non-standard radiation therapy such as brachytherapy, systemic radioisotope therapy, or intra-operative radiotherapy (IORT) to the target site.
• Radiation therapy within 12 weeks of screening
• Systemic therapy (including investigational agents and small-molecule kinase inhibitors) or non-cytotoxic hormonal therapy (eg, tamoxifen) within 14 days or 5 half-lives, whichever is shorter, prior first dose of study drug
• Biologic agents (antibodies, immune modulators, vaccines, cytokines) within 21 days prior to first dose of study drug
• Nitrosoureas or mitomycin C within 42 days, or metronomic/protracted low-dose chemotherapy within 14 days, or other cytotoxic chemotherapy within 28 days, prior to first dose of study drug
• Prior treatment with carmustine wafers
• Patients who are currently receiving any other investigational agents and/or who have received an investigational agent in the prior 28 days 8. Multifocal progression or involvement of the leptomeninges 9. Psychiatric illness/social situations that would limit compliance with the study requirements 10. Infratentorial disease

1. History of migraine (with or without aura) for > 6 months before Screening according to the IHS Classification ICHD-319 specifications for pediatric migraine. History may be verified using both medical records and recall by the participant and/or participant's parent(s)/legal representative(s). 2. History of 1 to 8 moderate or severe attacks per month during the 2 months prior to enrollment, with attacks lasting > 3 hours without treatment, and attacks occurring at intervals > 24 hours. 3. Prophylactic migraine medication are permitted if the dose has been stable for at least 12 weeks prior to the Baseline Visit, and the dose is not expected to change during the course of the study. 1. Participants may remain on one (1) medication with possible migraine prophylactic effects, excluding CGRP antagonists [biologic or small molecule], during the treatment phases. 2. Concomitant use of a CGRP antagonist, such as erenumab or fremanezumab, is prohibited. 3. Previously discontinued prophylactic migraine medication must have done so at least 90 days prior to the Screening Visit. 4. Verbally distinguish between migraine and other types of headaches. 5. Participants must have a weight > 40 kg at the Screening Visit. 6. Adequate venous access for blood sampling. 7. Male and female participants ≥ 6 to < 18 years of age (participants must not reach their 18th birthday during the study). 1. History of cluster headache or hemiplegic migraine headache. 2. Confounding and clinically significant pain syndrome that may interfere with the participant's ability to participate in this study. 3. Current psychiatric condition that is uncontrolled and/or untreated for a minimum of 6 months prior to the Screening Visit. Participants with a lifetime history of psychosis and/or mania. 4. History of suicidal behavior or major psychiatric disorder. 5. Current diagnosis or history of substance abuse; positive drug test at Screening. 6. History of moderate or severe head trauma or other neurological disorder (including seizure disorder) or systemic medical disease that is likely to affect central nervous system functioning. 7. Recent or planned surgery, requiring general anesthesia, <8 weeks prior to the Screening Visit. 8. Participant has had gastrointestinal surgery that interferes with physiological absorption and motility (i.e., gastric bypass, duodenectomy, or gastric banding). 9. Current diagnosis of viral hepatitis or a history of liver disease. 10. Conditions considered clinically relevant in the context of the study such as uncontrolled hypertension (high blood pressure), diabetes, a life-threatening allergy

• Infants born with postmenstrual age less than 28 weeks
• Signed informed consent, unless the NICU has chosen to use 'opt-out' or deferred consent as consent method.
• Missing written parental informed consent (if the 'opt-out' method is used for consent, lack of a record that the clinical staff have explained the trial and the 'opt-out' consent process to parents and/or a record in the infant's clinical file of parents' decision to opt-out, are exclusion criteria)
• Decision not to conduct full life support
• No possibility to place cerebral NIRS oximeter within six hours after birth

• Non-penetrating traumatic brain injury
• Glasgow Coma Scale (GCS) 3-8 measured off paralytics
• Glasgow Coma Scale motor score < 6 if endotracheally intubated
• Evidence of intracranial trauma on CT scan
• Able to place intracranial probes and randomize within 6 hours of arrival at enrolling hospital
• Able to place intracranial probes and randomize within 12 hours from injury
• Age greater than or equal to 14 years
• Non-survivable injury
• Bilaterally absent pupillary response in the absence of paralytic medication
• Contraindication to the placement of intracranial probes
• Treatment of brain tissue oxygen values prior to randomization
• Planned use of devices which may unblind treating physicians to brain tissue hypoxia
• Systemic sepsis at screening
• Refractory hypotension
• Refractory systemic hypoxia
• PaO2/FiO2 ratio < 200
• Known pre-existing neurologic disease with confounding residual neurological deficits
• Known inability to perform activities of daily living (ADL) without assistance prior to injury
• Known active drug or alcohol dependence that, in the opinion of site investigator, would interfere with physiological response to brain tissue oxygen treatments
• Pregnancy
• Prisoner
• On EFIC Opt-Out list as indicated by a bracelet or medical alert

• Diagnosis of EBV+ disorder
• Eastern Cooperative Oncology Group performance status <= 3 for participants aged >= 16 years; Lansky score >= 20 for participants from 1 year to < 16 years
• Adequate organ function test results, unless organ dysfunction is considered to be due to the underlying EBV-associated disease by the investigator Cohort-specific
• For participants with PID LPD:
• Newly diagnosed or relapsed/refractory LPD confirmed by biopsy-proven EBV+ LPD or positive cerebrospinal fluid (CSF) cytology with or without radiographically measurable intracranial disease with EBV detected in CSF
• Participant must have systemic measurable disease and/ or CNS measurable disease
• Definitive therapy (eg, allogeneic HCT, gene therapy) for the underlying PID is planned
• Participants with newly diagnosed disease should be ineligible for standard first-line therapy for EBV+ LPD, as determined by the investigator
• For participants with AID LPD:
• Newly diagnosed or relapsed/refractory LPD confirmed by biopsy-proven EBV+ LPD or positive CSF cytology, with or without radiographically measurable intracranial disease, with EBV detected in CSF
• Participant must have systemic measurable disease and/ or CNS measurable disease
• Participants who are human immunodeficiency virus positive (HIV+) must meet both of the following criteria: Have an HIV viral load assessed by reverse transcription-polymerase chain reaction (RT-PCR) below the lower limit of detection and CD4 >= 50 cells/μL within 6 months prior to the first dose of tabelecleucel
• Participants with newly diagnosed disease should be ineligible for standard first-line therapy for EBV+ LPD, as determined by the investigator
• For participants with CNS PTLD:
• Newly diagnosed or relapsed/refractory EBV+ CNS PTLD histologically confirmed by biopsy-proven EBV+ CNS PTLD or positive CSF cytology with or without radiographically measurable intracranial disease with EBV detected in CSF
• Participant may have systemic and CNS disease or CNS disease only
• Participants with newly diagnosed disease should be ineligible for standard first-line therapy for EBV+ LPD, as determined by the investigator
• For participants with EBV+ PTLD, where standard first line therapy (rituximab and/or chemotherapy) is not appropriate, including CD20-negative disease:
• Newly diagnosed, biopsy-proven EBV+ PTLD
• Ineligible for standard first-line therapy for EBV+ PTLD, as determined by the investigator
• Participants must have systemic disease measurable per Lugano Classification criteria, except when contraindicated or mandated by local practice, then MRI may be used.
• For participants with sarcoma, including LMS:
• Newly diagnosed or failed systemic first-line therapy for EBV+ sarcoma. Participants with newly diagnosed disease should be ineligible for standard first-line therapy for EBV+ sarcoma, as determined by the investigator.
• Biopsy-proven EBV+ sarcoma
• Measurable disease using diagnostic PET/CT and/or MRI following RECIST 1.1 criteria
• For participants with CAEBV:
• Newly diagnosed or previously treated CAEBV
• Detectable EBV viremia on at least 2 occasions at a minimum of 90 days apart
• At least 3 active clinical findings (per Kimura H, et al. Front Immunol. 2017;8:1867) as: Fever >= 38.5°C; splenomegaly, lymphadenopathy, and/or hepatomegaly; cytopenia affecting at least 2 or 3 lineages in the peripheral blood (hemoglobin < 9 g/dL, platelets < 100 × 10^3/mL, neutrophils < 1 × 10^3/mL); hypogammaglobulinemia; hemophagocytosis; hepatitis; neuropathy; rash; and hydroa vacciniforme
• For participants with EBV+ viremia with HLH:
• Newly diagnosed or previously treated EBV+ viremia with HLH
• A molecular diagnosis consistent with HLH-2004 trial (per Henter JI, et al. Pediatr Blood Cancer. 2007;48:124-31) OR 5 or more of the clinical symptoms (per Jordan MB, et al. Blood. 2011;118:4041-4052): Fever >= 38.5°C; splenomegaly; cytopenia affecting at least 2 or 3 lineages in the peripheral blood (hemoglobin < 9 g/dL, platelets < 100 × 10^3/mL, neutrophils < 1 × 10^3/mL); hypertriglyceridemia (fasting >= 265 mg/dL) and/or hypofibrinogenemia (<= 150 mg/dL); hemophagocytosis in bone marrow, spleen, lymph nodes, or liver; low or absent natural killer cell (NK-cell) activity; ferritin >= 500 ng/mL; and elevated soluble CD25
• Burkitt, T-cell (except in the setting of HLH), natural killer/T-cell lymphoma/LPD, Hodgkin, or transformed lymphoma
• Serious known active infections, defined as ongoing uncontrolled adenovirus infection or infections requiring systemic therapy at the time of enrollment
• Suspected or confirmed Grade >= 2 acute graft-versus-host disease (GvHD) per the Center for International Blood and Marrow Transplant Research (CIBMTR) consensus grading system or extensive chronic GvHD per National Institutes of Health (NIH) consensus criteria at the time of the enrollment
• Need for vasopressor or ventilatory support
• Prior therapy (in order of increasing washout period) prior to enrollment as:
• Within 4 weeks or 5 half-lives (whichever is shorter) for any investigational product and/ or any chemotherapy (systemic or intrathecal), targeted small molecule therapy, or antibody/biologic therapy. Note: prior anti-CD20 antibody use is permitted within the washout period if a subsequent disease response assessment indicates disease progression
• Within <= 8 weeks for cellular therapies (EBV-CTLs, chimeric antigen receptor therapies directed at T cells or T-cell subsets, donor lymphocyte infusion, other CTLs); and/or therapies which could impact tabelecleucel function (anti-thymocyte globulin, alemtuzumab)
• Unwilling to use protocol specified contraceptive methods
• Women who are pregnant or breastfeeding
• Ongoing need for daily steroids of > 0.5 mg/kg prednisone or glucocorticoid equivalent, ongoing methotrexate, or extracorporeal photopheresis (protocol-specified dexamethasone is permitted and concludes by the time of enrollment)
• For participants with PID LPD or AID LPD: history of prior allogeneic HCT or solid organ transplant