A Study of Treatment for Medulloblastoma Using Sodium Thiosulfate to Reduce Hearing Loss

Purpose

This phase III trial tests two hypotheses in patients with low-risk and average-risk medulloblastoma. Medulloblastoma is a type of cancer that occurs in the back of the brain. The term, risk, refers to the chance of the cancer coming back after treatment. Subjects with low-risk medulloblastoma typically have a lower chance of the cancer coming back than subjects with average-risk medulloblastoma. Although treatment for newly diagnosed average-risk and low-risk medulloblastoma is generally effective at treating the cancer, there are still concerns about the side effects of such treatment. Side effects or unintended health conditions that arise due to treatment include learning difficulties, hearing loss or other issues in performing daily activities. Standard therapy for newly diagnosed average-risk or low-risk medulloblastoma includes surgery, radiation therapy, and chemotherapy (including cisplatin). Cisplatin may cause hearing loss as a side effect. In the average-risk medulloblastoma patients, this trial tests whether the addition of sodium thiosulfate (STS) to standard of care chemotherapy and radiation therapy reduces hearing loss. Previous studies with STS have shown that it may help reduce or prevent hearing loss caused by cisplatin. In the low-risk medulloblastoma patients, the study tests whether a less intense therapy (reduced radiation) can provide the same benefits as the more intense therapy. The less intense therapy may cause fewer side effects. Radiation therapy uses high energy x-rays to kill tumor cells and shrink tumors. Cisplatin is in a class of medications known as platinum-containing compounds. It works by killing, stopping or slowing the growth of cancer cells. The overall goals of this study are to see if giving STS along with standard treatment (radiation therapy and chemotherapy) will reduce hearing loss in medulloblastoma patients and to compare the overall outcome of patients with medulloblastoma treated with STS to patients treated without STS on a previous study in order to make sure that survival and recurrence of tumor is not worsened.

Condition

  • Childhood Medulloblastoma

Eligibility

Eligible Ages
Between 4 Years and 21 Years
Eligible Genders
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • PRE-ENROLLMENT: Patients must be ≥ 4 years and ≤ 21 years of age at the time of enrollment - PRE-ENROLLMENT: Patient is suspected to have newly-diagnosed medulloblastoma by institutional diagnosis - Please note: Patients with a pending result of CSF cytology tests are eligible for NCI-2014-02057 (APEC14B1-Central Nervous System [CNS]) and CNS/Medulloblastoma Pre Enrollment Eligibility Screening - PRE-ENROLLMENT: The patient and/or their parents or legal guardians must have signed informed consent for APEC14B1 Part A - Eligibility Screening and consent for the Molecular Characterization Initiative (MCI) - PRE-ENROLLMENT: The required specimens are projected to be submitted under APEC14B1-CNS as soon as possible, preferably within 5 days of definitive surgery - PRE-ENROLLMENT: All patients must have rapid central pathology review under APEC14B1-CNS prior to study enrollment on ACNS2031 step 1 in order to avoid discordant diagnoses and to verify diagnosis criterion for treatment on ACNS2031. - Note: Patients with a pending result of CSF cytology tests are eligible for the rapid central pathology screening review. Confirmation of CSF negativity is needed for enrollment on the ACNS2031 protocol - PRE-ENROLLMENT: All patients must have rapid central molecular screening review under APEC14B1-CNS prior to study enrollment on ACNS2031 step 1, in order to avoid discordant diagnoses and to verify diagnosis criterion for treatment on ACNS2031 - PRE-ENROLLMENT: All patients who have histopathology confirmed must have rapid central imaging screening review under APEC14B1 prior to study enrollment on ACNS2031 step 1 - Note: Patients must not have metastatic disease on cranial or spinal MRI. Patients with > 1.5 cm^2 residual tumor after initial surgical resection may undergo a second surgical resection prior to subsequent therapy to render them eligible for this study. The day of the second resection to remove residual tumor will be regarded as the day of definitive surgery (Day 0) and must be within a month (31 days) of the initial resection - PRE-ENROLLMENT: All patients who have histopathology confirmed must have rapid central audiology review under APEC14B1-CNS prior to study enrollment on ACNS2031 step 1 - Patients must be >= 4 years and =< 21 years of age at the time of enrollment - Patients must be newly diagnosed and have eligibility confirmed by rapid central pathology and molecular screening reviews performed on APEC14B1 and via the Molecular Characterization Initiative - Average-risk cohort - Clinico-pathologic criteria: - M0 disease - No diffuse anaplastic histology AND - Molecular criteria: - SHH, p53wt, GLI2 normal, MYCN normal, no chromosome 14q loss - Group 3, MYC normal, no isochromosome 17q - Group 4, no chromosome 11 loss - Low-risk features cohort - Clinico-pathologic criteria: - M0 disease - No diffuse anaplastic histology AND - Molecular criteria: - Group 4, chromosome 11 loss - Patients must have negative lumbar CSF cytology - Note: CSF cytology for staging should be performed no sooner than 14 days post operatively to avoid false positive CSF. Ideally, CSF should be obtained between day 14 and day 21 to allow for final staging status before enrollment onto the study. Patients with positive CSF cytology obtained 0 to 14 days after surgery should have cytology repeated to determine eligibility and final CSF status. Patients with negative CSF cytology from lumbar puncture obtained 0 to 14 days after surgery do not need cytology repeated. Patients with negative CSF cytology from lumbar puncture obtained prior to surgery do not need cytology repeated post-operatively - Patients must have eligibility confirmed by Rapid Central Imaging Review performed on APEC14B1. Patients must have =< 1.5 cm^2 cross-sectional area of residual tumor. Whole brain MRI with and without gadolinium and spine MRI with gadolinium must be performed - Patients must weigh > 10 kg - Patients must be enrolled, and protocol therapy must be projected to begin, no later than 31 days after definitive diagnostic surgery (day 0) - 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 count [RBC] transfusions) (within 7 days prior to enrollment) - A serum creatinine (within 7 days prior to enrollment) based on age/sex as follows: - 4 to < 6 years (age); 0.8 mg/dL (male) 0.8 mg/dL (female) - 6 to < 10 years (age); 1 mg/dL (male) 1 mg/dL (female) - 10 to < 13 years (age); 1.2 mg/dL (male) 1.2 mg/dL (female) - 13 to < 16 years (age); 1.5 mg/dL (male) 1.4 mg/dL (female) - >= 16 years (age); 1.7 mg/dL (male) 1.4 mg/dL (female) OR a 24 hour urine Creatinine clearance >= 70 mL/min/1.73 m^2 (within 7 days prior to enrollment) OR a glomerular filtration rate (GFR) >= 70 mL/min/1.73 m^2 (within 7 days prior to enrollment). GFR must be performed using direct measurement with a nuclear blood sampling method OR direct small molecule clearance method (iothalamate or other molecule per institutional standard) - Note: Estimated GFR (eGFR) from serum creatinine, cystatin C or other estimates are not acceptable for determining eligibility - Total bilirubin =< 1.5 x upper limit of normal (ULN) for age (within 7 days prior to enrollment) - Serum glutamic pyruvic transaminase (SGPT) (alanine aminotransferase [ALT]) =< 135 U/L (within 7 days prior to enrollment) - Note: For the purpose of this study, the ULN for SGPT (ALT) has been set to the value of 45 U/L - Central nervous system function defined as: - Patients with seizure disorder may be enrolled if on anticonvulsants and well controlled - Patients must not be in status epilepticus, a coma or assisted ventilation at the time of study enrollment - Auditory function defined as: - Patients must have normal hearing (defined as International Society of Pediatric Oncology [SIOP] grade 0) in at least one ear confirmed by rapid central audiology review performed on APEC14B1 prior to enrollment - 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

Exclusion Criteria

  • Patients with metastatic disease by either MRI evaluation or lumbar CSF cytology are not eligible. Patients who are unable to undergo a lumbar puncture for assessment of CSF cytology are ineligible - Patients must not have received any prior radiation therapy or chemotherapy (tumor-directed therapy) other than surgical intervention and/or corticosteroids - Patients must not have any known hypersensitivity to STS, sulfates/sulfites, or other thiol agents (e.g., amifostine, n-acetylcysteine, MESNA, and captopril) - Pregnancy and Breastfeeding: - Female patients who are pregnant since fetal toxicities and teratogenic effects have been noted for several of the study drugs. A pregnancy test is required for female patients of childbearing potential - Lactating females who plan to breastfeed their infants - Sexually active patients of reproductive potential who have not agreed to use an effective contraceptive method for the duration of their study participation

Study Design

Phase
Phase 3
Study Type
Interventional
Allocation
N/A
Intervention Model
Single Group Assignment
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
Treatment (chemoradiotherapy, maintenance)
See Detailed Description.
  • Procedure: Audiometric Test
    Ancillary studies
    Other names:
    • Audiometric Testing
    • Audiometry
    • Hearing Test
  • Procedure: Auditory Brainstem Response
    Ancillary studies
    Other names:
    • ABR
    • BAEP
    • BAER
    • Brainstem Auditory Evoked Potentials
    • Brainstem Auditory Evoked Response
  • Procedure: Biospecimen Collection
    Undergo CSF and blood sample collection
    Other names:
    • Biological Sample Collection
    • Biospecimen Collected
    • Specimen Collection
  • Drug: Cisplatin
    Given IV
    Other names:
    • Abiplatin
    • Blastolem
    • Briplatin
    • CDDP
    • Cis-diammine-dichloroplatinum
    • Cis-diamminedichloridoplatinum
    • Cis-diamminedichloro Platinum (II)
    • Cis-diamminedichloroplatinum
    • Cis-dichloroammine Platinum (II)
    • Cis-platinous Diamine Dichloride
    • Cis-platinum
    • Cis-platinum II
    • Cis-platinum II Diamine Dichloride
    • Cismaplat
    • Cisplatina
    • Cisplatinum
    • Cisplatyl
    • Citoplatino
    • Citosin
    • Cysplatyna
    • DDP
    • Lederplatin
    • Metaplatin
    • Neoplatin
    • Peyrone's Chloride
    • Peyrone's Salt
    • Placis
    • Plastistil
    • Platamine
    • Platiblastin
    • Platiblastin-S
    • Platinex
    • Platinol
    • Platinol- AQ
    • Platinol-AQ
    • Platinol-AQ VHA Plus
    • Platinoxan
    • Platinum
    • Platinum Diamminodichloride
    • Platiran
    • Platistin
    • Platosin
  • Drug: Cyclophosphamide
    Given IV
    Other names:
    • (-)-Cyclophosphamide
    • 2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrate
    • Asta B 518
    • B 518
    • B-518
    • B518
    • Carloxan
    • Ciclofosfamida
    • Ciclofosfamide
    • Cicloxal
    • Clafen
    • Claphene
    • CP monohydrate
    • CTX
    • CYCLO-cell
    • Cycloblastin
    • Cycloblastine
    • Cyclophospham
    • Cyclophosphamid monohydrate
    • Cyclophosphamide Monohydrate
    • Cyclophosphamidum
    • Cyclophosphan
    • Cyclophosphane
    • Cyclophosphanum
    • Cyclostin
    • Cyclostine
    • Cytophosphan
    • Cytophosphane
    • Cytoxan
    • Fosfaseron
    • Genoxal
    • Genuxal
    • Ledoxina
    • Mitoxan
    • Neosar
    • Revimmune
    • Syklofosfamid
    • WR 138719
    • WR- 138719
    • WR-138719
    • WR138719
  • Drug: Lomustine
    Given PO
    Other names:
    • 1-(2-Chloroethyl)-3-cyclohexyl-1-nitrosourea
    • 1-Nitrosourea, 1-(2-chloroethyl)-3-cyclohexyl-
    • Belustin
    • Belustine
    • CCNU
    • Cecenu
    • CeeNU
    • Chloroethylcyclohexylnitrosourea
    • Citostal
    • Gleostine
    • Lomeblastin
    • Lomustinum
    • Lucostin
    • Lucostine
    • N-(2-Chloroethyl)-N'-cyclohexyl-N-nitrosourea
    • Prava
    • RB-1509
    • WR-139017
  • Procedure: Magnetic Resonance Imaging
    Undergo MRI
    Other names:
    • Magnetic Resonance
    • Magnetic Resonance Imaging (MRI)
    • Magnetic resonance imaging (procedure)
    • Magnetic Resonance Imaging Scan
    • Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance
    • MR
    • MR Imaging
    • MRI
    • MRI Scan
    • MRIs
    • NMR Imaging
    • NMRI
    • Nuclear Magnetic Resonance Imaging
    • sMRI
    • Structural MRI
  • Other: Quality-of-Life Assessment
    Ancillary studies
    Other names:
    • Quality of Life Assessment
  • Radiation: Radiation Therapy
    Undergo radiation therapy
    Other names:
    • Cancer Radiotherapy
    • Energy Type
    • ENERGY_TYPE
    • Irradiate
    • Irradiated
    • Irradiation
    • Radiation
    • Radiation Therapy, NOS
    • Radiotherapeutics
    • Radiotherapy
    • RT
    • Therapy, Radiation
  • Drug: Sodium Thiosulfate
    Given IV
    Other names:
    • Cyanide Antidote Package
    • Disodium Thiosulfate
    • S-Hydril
    • Sodium Hyposulfate
    • Sodium Thiosulfate Pentahydrate
    • Sodium Thiosulphate
    • Sodothiol
    • Thiosulfate, Sodium, Pentahydrate
    • Thiosulfuric Acid Disodium Salt
  • Other: Survey Administration
    Ancillary studies
  • Drug: Vincristine
    Given IV
    Other names:
    • LCR
    • Leurocristine
    • VCR
    • Vincrystine

Recruiting Locations

Phoenix Childrens Hospital
Phoenix, Arizona 85016
Contact:
Site Public Contact
602-546-0920

Arkansas Children's Hospital
Little Rock, Arkansas 72202-3591
Contact:
Site Public Contact
501-364-7373

Loma Linda University Medical Center
Loma Linda, California 92354
Contact:
Site Public Contact
909-558-4050

Miller Children's and Women's Hospital Long Beach
Long Beach, California 90806
Contact:
Site Public Contact
562-933-5600

Children's Hospital Los Angeles
Los Angeles, California 90027
Contact:
Site Public Contact
323-361-4110

Valley Children's Hospital
Madera, California 93636
Contact:
Site Public Contact
559-353-3000
Research@valleychildrens.org

Kaiser Permanente-Oakland
Oakland, California 94611
Contact:
Site Public Contact
877-642-4691
Kpoct@kp.org

Children's Hospital of Orange County
Orange, California 92868
Contact:
Site Public Contact
714-509-8646
oncresearch@choc.org

Rady Children's Hospital - San Diego
San Diego, California 92123
Contact:
Site Public Contact
858-966-5934

Children's Hospital Colorado
Aurora, Colorado 80045
Contact:
Site Public Contact
303-764-5056
josh.b.gordon@nsmtp.kp.org

Alfred I duPont Hospital for Children
Wilmington, Delaware 19803
Contact:
Site Public Contact
302-651-5572
Allison.bruce@nemours.org

Memorial Regional Hospital/Joe DiMaggio Children's Hospital
Hollywood, Florida 33021
Contact:
Site Public Contact
954-265-1847
OHR@mhs.net

Nemours Children's Clinic-Jacksonville
Jacksonville, Florida 32207
Contact:
Site Public Contact
302-651-5572
Allison.bruce@nemours.org

Nicklaus Children's Hospital
Miami, Florida 33155
Contact:
Site Public Contact
888-624-2778

Arnold Palmer Hospital for Children
Orlando, Florida 32806
Contact:
Site Public Contact
321-841-5357
Jennifer.spinelli@orlandohealth.com

Nemours Children's Hospital
Orlando, Florida 32827
Contact:
Site Public Contact
302-651-5572
Allison.bruce@nemours.org

University of Illinois
Chicago, Illinois 60612
Contact:
Site Public Contact
312-355-3046

Riley Hospital for Children
Indianapolis, Indiana 46202
Contact:
Site Public Contact
800-248-1199

University of Iowa/Holden Comprehensive Cancer Center
Iowa City, Iowa 52242
Contact:
Site Public Contact
800-237-1225

Norton Children's Hospital
Louisville, Kentucky 40202
Contact:
Site Public Contact
502-629-5500
CancerResource@nortonhealthcare.org

Children's Hospital New Orleans
New Orleans, Louisiana 70118
Contact:
Site Public Contact
CHResearch@lcmchealth.org

Sinai Hospital of Baltimore
Baltimore, Maryland 21215
Contact:
Site Public Contact
410-601-6120
pridgely@lifebridgehealth.org

Johns Hopkins University/Sidney Kimmel Cancer Center
Baltimore, Maryland 21287
Contact:
Site Public Contact
410-955-8804
jhcccro@jhmi.edu

C S Mott Children's Hospital
Ann Arbor, Michigan 48109
Contact:
Site Public Contact
800-865-1125

Children's Hospital of Michigan
Detroit, Michigan 48201
Contact:
Site Public Contact
helpdesk@childrensoncologygroup.org

Corewell Health Children's
Royal Oak, Michigan 48073
Contact:
Site Public Contact
248-551-7695

Children's Hospitals and Clinics of Minnesota - Minneapolis
Minneapolis, Minnesota 55404
Contact:
Site Public Contact
612-813-5913
pauline.mitby@childrensmn.org

University of Mississippi Medical Center
Jackson, Mississippi 39216
Contact:
Site Public Contact
601-815-6700

Children's Mercy Hospitals and Clinics
Kansas City, Missouri 64108
Contact:
Site Public Contact
816-302-6808
rryan@cmh.edu

Cardinal Glennon Children's Medical Center
Saint Louis, Missouri 63104
Contact:
Site Public Contact
314-268-4000

Washington University School of Medicine
Saint Louis, Missouri 63110
Contact:
Site Public Contact
800-600-3606
info@siteman.wustl.edu

Saint Peter's University Hospital
New Brunswick, New Jersey 08901
Contact:
Site Public Contact
732-745-8600
kcovert@saintpetersuh.com

Saint Joseph's Regional Medical Center
Paterson, New Jersey 07503
Contact:
Site Public Contact
973-754-2207
HallL@sjhmc.org

Albany Medical Center
Albany, New York 12208
Contact:
Site Public Contact
518-262-5513

Roswell Park Cancer Institute
Buffalo, New York 14263
Contact:
Site Public Contact
800-767-9355
askroswell@roswellpark.org

The Steven and Alexandra Cohen Children's Medical Center of New York
New Hyde Park, New York 11040
Contact:
Site Public Contact
718-470-3460

Stony Brook University Medical Center
Stony Brook, New York 11794
Contact:
Site Public Contact
800-862-2215

State University of New York Upstate Medical University
Syracuse, New York 13210
Contact:
Site Public Contact
315-464-5476

New York Medical College
Valhalla, New York 10595
Contact:
Site Public Contact
914-594-3794

UNC Lineberger Comprehensive Cancer Center
Chapel Hill, North Carolina 27599
Contact:
Site Public Contact
877-668-0683
cancerclinicaltrials@med.unc.edu

Wake Forest University Health Sciences
Winston-Salem, North Carolina 27157
Contact:
Site Public Contact
336-713-6771

Sanford Broadway Medical Center
Fargo, North Dakota 58122
Contact:
Site Public Contact
701-323-5760
OncologyClinicalTrialsFargo@sanfordhealth.org

Children's Hospital Medical Center of Akron
Akron, Ohio 44308
Contact:
Site Public Contact
330-543-3193

Cincinnati Children's Hospital Medical Center
Cincinnati, Ohio 45229
Contact:
Site Public Contact
513-636-2799
cancer@cchmc.org

Rainbow Babies and Childrens Hospital
Cleveland, Ohio 44106
Contact:
Site Public Contact
216-844-5437

Nationwide Children's Hospital
Columbus, Ohio 43205
Contact:
Site Public Contact
614-722-6039
Melinda.Triplet@nationwidechildrens.org

Dayton Children's Hospital
Dayton, Ohio 45404
Contact:
Site Public Contact
800-228-4055

ProMedica Toledo Hospital/Russell J Ebeid Children's Hospital
Toledo, Ohio 43606
Contact:
Site Public Contact
419-824-1842
PCIOncResearch@promedica.org

University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma 73104
Contact:
Site Public Contact
405-271-8777
ou-clinical-trials@ouhsc.edu

Oregon Health and Science University
Portland, Oregon 97239
Contact:
Site Public Contact
503-494-1080
trials@ohsu.edu

Geisinger Medical Center
Danville, Pennsylvania 17822
Contact:
Site Public Contact
570-271-5251
HemonCCTrials@geisinger.edu

Children's Hospital of Pittsburgh of UPMC
Pittsburgh, Pennsylvania 15224
Contact:
Site Public Contact
412-692-8570
jean.tersak@chp.edu

Prisma Health Richland Hospital
Columbia, South Carolina 29203
Contact:
Site Public Contact
864-241-6251

BI-LO Charities Children's Cancer Center
Greenville, South Carolina 29605
Contact:
Site Public Contact
864-241-6251

Sanford USD Medical Center - Sioux Falls
Sioux Falls, South Dakota 57117-5134
Contact:
Site Public Contact
605-312-3320
OncologyClinicalTrialsSF@SanfordHealth.org

Vanderbilt University/Ingram Cancer Center
Nashville, Tennessee 37232
Contact:
Site Public Contact
800-811-8480

Dell Children's Medical Center of Central Texas
Austin, Texas 78723
Contact:
Site Public Contact
512-628-1902
TXAUS-DL-SFCHemonc.research@ascension.org

UT Southwestern/Simmons Cancer Center-Dallas
Dallas, Texas 75390
Contact:
Site Public Contact
214-648-7097
canceranswerline@UTSouthwestern.edu

El Paso Children's Hospital
El Paso, Texas 79905
Contact:
Site Public Contact
915-298-5444
ranjan.bista@ttuhsc.edu

Children's Hospital of San Antonio
San Antonio, Texas 78207
Contact:
Site Public Contact
210-704-2894
bridget.medina@christushealth.org

University of Texas Health Science Center at San Antonio
San Antonio, Texas 78229
Contact:
Site Public Contact
210-450-3800
phoresearchoffice@uthscsa.edu

University of Virginia Cancer Center
Charlottesville, Virginia 22908
Contact:
Site Public Contact
434-243-6303
uvacancertrials@hscmail.mcc.virginia.edu

Virginia Commonwealth University/Massey Cancer Center
Richmond, Virginia 23298
Contact:
Site Public Contact
CTOclinops@vcu.edu

Seattle Children's Hospital
Seattle, Washington 98105
Contact:
Site Public Contact
866-987-2000

Providence Sacred Heart Medical Center and Children's Hospital
Spokane, Washington 99204
Contact:
Site Public Contact
800-228-6618
HopeBeginsHere@providence.org

Mary Bridge Children's Hospital and Health Center
Tacoma, Washington 98405
Contact:
Site Public Contact
253-403-1461
research@multicare.org

University of Wisconsin Carbone Cancer Center - University Hospital
Madison, Wisconsin 53792
Contact:
Site Public Contact
800-622-8922
clinicaltrials@cancer.wisc.edu

Children's Hospital of Wisconsin
Milwaukee, Wisconsin 53226
Contact:
Site Public Contact
414-955-4727
MACCCTO@mcw.edu

More Details

NCT ID
NCT05382338
Status
Recruiting
Sponsor
Children's Oncology Group

Detailed Description

PRIMARY OBJECTIVES: I. To evaluate the efficacy of sodium thiosulfate (STS) infusion administered during cisplatin-containing chemotherapy cycles (compared to a historical cohort selected from ACNS0331 which received chemotherapy without STS) in reducing hearing loss in children with newly-diagnosed average-risk medulloblastoma. II. To estimate and monitor event-free survival (EFS) in this study against a carefully selected cohort from ACNS0331 to guard against loss of efficacy due to STS. SECONDARY OBJECTIVES: I. To estimate and monitor overall survival (OS) in this study against a carefully selected control cohort from ACNS0331. II. To estimate the incidence of ototoxicity-related cisplatin dose modifications in the average-risk cohort. III. To estimate the incidence of cisplatin-related nephrotoxicity in both the average-risk and low-risk cohorts. IV. To evaluate full scale intelligence neurocognitive outcomes and trajectories of patients with average-risk medulloblastoma treated with STS compared to the control cohort from ACNS0331. V. To evaluate quality of life and psychosocial outcomes and trajectories of patients with average-risk medulloblastoma treated with STS compared to published norms. VI. To estimate and monitor EFS, OS, and patterns of recurrence in patients with low-risk features treated using a reduced craniospinal radiation approach. VII. To evaluate the trajectory of hearing loss in medulloblastoma patients treated with STS. VIII. To evaluate household material hardship as a social determinant of neurocognitive, quality of life, and psychosocial outcomes in patients with average-risk and low risk medulloblastoma. EXPLORATORY OBJECTIVES: I. To obtain paired blood and tumor tissue to be banked for future biology studies involving comprehensive molecular analysis, including but not limited to whole exome sequencing, ribonucleic acid (RNA) sequencing, and methylation. II. To bank blood and cerebrospinal fluid for future studies. III. To evaluate attention, processing speed, memory, and executive function neurocognitive outcomes and trajectories, as well as hearing-related quality of life outcomes and trajectories, of patients with average-risk medulloblastoma treated with STS. IV. To evaluate neurocognitive, quality of life, and psychosocial outcomes of patients with low-risk features treated using a reduced craniospinal radiation approach. OUTLINE: CHEMORADIOTHERAPY: Patients undergo radiation therapy 5 days per week for 6 weeks (weeks 1-6) and receive vincristine intravenously (IV) once weekly on weeks 2-7 in the absence of disease progression or unacceptable toxicity. MAINTENANCE: Beginning 4 weeks after chemoradiotherapy, patients receive lomustine orally (PO) on day 1 of cycles 1, 2, 4, 5, 7, and 8, cisplatin IV over 6 hours on day 1 of cycles 1, 2, 4, 5, 7, and 8, sodium thiosulfate IV over 15 minutes on day 1 of cycles 1, 2, 4, 5, 7, and 8, and cyclophosphamide IV over 30-60 minutes on days 1 and 2 of cycles 3, 6, and 9. Patients also receive vincristine IV on days 1, 8, and 15 of cycles 1, 2, 4, 5, 7, and 8, and on days 1 and 8 of cycles 3, 6, and 9. Treatment repeats every 6 weeks (cycles 1, 2, 4, 5, 7 and 8) or every 4 weeks (cycles 3, 6, and 9) for up to 9 cycles in the absence of disease progression or unacceptable toxicity. Additionally, patients undergo magnetic resonance imaging (MRI) and collection of cerebrospinal fluid (CSF) throughout the study. Patients may also optionally undergo blood sample collection throughout the study. After completion of study treatment, patients are followed up every 3 months for years 1-2, every 6 months for years 3-4, and then annually for years 5-10.