Feasibility of Using Concurrent Carboplatin and Reduced Dose Craniospinal Radiation (24Gy) for Metastatic Medulloblastoma, High-Risk Supratentorial PNET and Metastatic PNET
Phase: PHASE2
Conditions: Metastatic Medulloblastoma, High Risk Supratentorial PNET, Metastatic PNET
Sponsor: University of Colorado, Denver

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A STUDY OF THE CHILDREN’S NEURO-ONCOLOGY CONSORTIUM 
 
 
FEASIBILITY OF USING CONCURRENT CARBOPLATIN AND REDUCED DOSE 
CRANIOSPINAL RADIATION (24 GY) FOR METASTATIC MEDULLOBLASTOMA AND 
HIGH-RISK SUPRATENTORIAL PNET AND METASTATIC PNET 
 
 
Version Date:  8/7/14 
 
COMIRB#: 06-1151 
 
Principal Investigators 
 
Jennifer Madden, RN, CPNP  
Assistant Director, Clinical Neuro-Oncology 
Associate Professor, Division of Hematology, Oncology, BMT 
 
 
 
 
 
Phone (720) 777-6772 
 
 
 
 
 
E-mail: Jennifer.Madden@childrenscolorado.org 
 
Co-investigators 
 
Nicholas Foreman, MD 
 
Director, Clinical Neuro-Oncology 
 
 
 
 
 
Professor, Division of Hematology, Oncology, BMT 
Children’s Hospital Colorado 
 
Arthur Liu, MD, Ph.D. 
 
Assistant Professor, Department of Radiation Oncology 
 
 
Greta Wilkening, Psy.D.  
 
Associate Professor, Neurology 
 
Research Coordinator 
 
Elizabeth Chick RN, CRC 
 
Children’s Hospital Colorado 
 
 
 
 
 
A036/B115 
 
 
 
 
 
Phone  720-777-3214 
 
 
 
 
 
E-mail: elizabeth.chick@childrenscolorado.org 
 
 
 
 
 
 
 
 

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TABLE OF CONTENTS 
Section  
 
 
 
 
 
 
 
 
 
 
Page 
 
1.0 
 
GOALS AND OBJECTIVES 
 
 
 
 
 
 
4 
2.0 
 
OVERVIEW AND STUDY DESIGN 
 
 
 
               
4                
3.0 
 
BACKGROUND AND RATIONALE  
 
 
 
    
5 
4.0         
METHODS 
 
 
 
 
 
 
   
  
8 
 
 
 
4.1 
Eligibility Criteria 
 
 
 
 
 
 
8 
 
 
 
4.2 
Subject Enrollment 
 
 
 
 
 
 
9 
 
 
 
4.3  
Informed Consent Procedure 
 
 
 
 
 
9 
 
 
 
4.4 
Confidentiality  
 
 
 
 
 
    
11 
 
 
 
4.5 
HIPAA Authorization Procedure 
 
 
 
 
11 
5.0  
 
TREATMENT PROGRAM 
 
 
 
 
 
 
12 
 
 
 
5.1 
Chemoradiotherapy 
 
 
 
 
 
 
12 
 
 
 
5.2 
Supportive Care 
 
 
 
 
 
   
13 
 
 
5.3 
Dose Modification 
 
 
 
 
 
 
14 
6.0 
      
REQUIRED OBSERVATIONS  
 
 
 
 
  
15 
 
 
6.1 
Pre-Treatment and During Chemoradiotherapy  
 
   
15 
 
 
6.2 
Pre-Study Examination  
 
 
 
 
   
15 
 
 
6.3 
Evaluation During Treatment 
 
 
 
 
 
16 
 
 
6.4 
Evaluation Following Protocol Therapy  
 
 
 
17 
 
 
6.5 
Required Observations Following Protocol Therapy 
 
 
18 
 
 
 
 
7.0 
 
DRUG INFORMATION 
 
 
 
 
 
 
19 
 
 
7.1 
Vincristine 
 
 
 
 
 
 
 
19 
 
 
7.2 
Carboplatin 
 
 
 
 
 
 
 
19 
8.0 
 
RESPONSE CRITERIA 
 
 
 
 
 
 
20 
9.0 
 
CRITERIA FOR REMOVAL FROM PROTOCOL THERAPY  
   
21 
 
 
9.1 
Criteria for Removal from Protocol Therapy 
 
 
 
21 
 
 
9.2 
Removal from Protocol Follow-Up 
 
 
 
 
21 
10.0 
 
NEURORADIOLOGY GUIDELINES  
 
 
 
   
21 
 
 
10.1 
Whole Brain MRI with and without Contrast 
 
 
 
21 
 
 
10.2 
Pre- or Post-Operative Spinal Axis Imaging 
 
 
 
22 
11.0 
 
NEUROSURGICAL GUIDELINES 
 
 
 
 
 
22 
 
 
11.1 
Types of Surgery 
 
 
 
 
 
 
22 
 
 
11.2 
Staging Criteria  
 
 
 
 
 
   
23 
 
 
11.3 
Peri-operative Corticosteroids 
 
 
 
 
   
24 
 
 
11.4 
Pathology Studies 
 
 
 
 
 
   
24 
 
 
11.5 
Shunts  
 
 
 
 
 
 
 
24 
12.0 
 
RADIATION THERAPY GUIDELINES 
 
 
 
 
24 
 
 
12.1 
Timing of Radiation Therapy 
 
 
 
 
 
25 
 
 
12.2 
Equipment 
 
 
 
 
 
 
 
25 
 
 
12.3 
Treatment Volume Anatomical Description 
 
 
 
26 
 
 
12.4 
Three Dimensional Treatment Planning  
 
 
 
28 
 
 
12.5 
Treatment Dose  
 
 
 
 
 
 
29 

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12.6 
Treatment Technique 
 
 
 
 
 
 
33 
 
 
12.7 
Quality Review  
 
 
 
 
 
 
35 
13.0 
 
STATISTICAL CONSIDERATIONS 
 
 
 
 
 
35 
 
 
13.1 
Patient Accrual  
 
 
 
 
 
 
35 
 
 
13.2 
Study Duration  
 
 
 
 
 
 
36 
 
 
13.3 
Study Endpoints 
 
 
 
 
 
 
36 
 
 
13.4 
Interim Monitoring 
 
 
 
 
 
 
36 
 
 
13.5 
Gender and Ethnic Origin 
 
 
 
 
 
37 
14.0 
 
ADVERSE EVENT REPORTING AND TOXICITY CRITERIA 
 
37 
 
 
14.1 
Purpose 
 
 
 
 
 
 
 
37 
 
 
14.2 
Reporting Requirements 
 
 
 
 
 
37 
 
 
14.3 
Toxicity Criteria 
 
 
 
 
 
 
38 
15.0 
 
REFERENCES  
 
 
 
 
 
 
 
38 
 
 
 
Appendix 1 
Neurological Exam Guidelines  
 
 
 
 
 
42 
Appendix 2 
Performance Status Scales 
 
 
 
 
 
 
43 
Appendix 3 
Neuropsychological Testing 
 
 
 
 
 
 
44 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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1.0  
GOALS AND OBJECTIVES 
To study the efficacy of the combination of reduced dose craniospinal radiation (reduced from 
standard of care dosing at 36 Gy to 24 Gy) with concurrent carboplatin and vincristine administration 
for metastatic classical histology medulloblastomas and high-risk supratentorial PNETs and metastatic 
PNETs. 
2.0  
OVERVIEW AND STUDY DESIGN 
This study is to look at the efficacy of reducing the dose of craniospinal radiation to limit adverse 
effects, while adding concurrent carboplatin administration during radiation with weekly vincristine for 
metastatic medulloblastomas and high-risk supratentorial PNETs and metastatic PNETs.  Pilot data 
from Children’s Oncology Group (COG) study 99701 show excellent results with daily carboplatin 
infusion during radiation for high risk central nervous system tumors (Jakacki et al, 2006).  This study 
had an 89% 3 year event free survival for classical histology metastatic medulloblastoma.  Anaplastic 
medulloblastomas did poorly and will be excluded from the current study.   
Although the COG 99701 study had excellent event free survival, 36 Gy radiation dose to the 
craniospinal axis was used.  This dosage is known to be associated with extremely poor quality of life 
as an adult (Ribi et al, 2005, Packer et al, 1994).  The improvement of survival of COG 99701 over all 
prior studies appears to be due to the addition of carboplatin during radiation.  The current study 
proposes to see if the addition of carboplatin during radiation allows for lowering the craniospinal 
radiation dose to 23.4 Gy, a dose which is known to be associated with a satisfactory quality of life for 
adult survivors (Ribi et al, 2005, Packer et al, 1994). 
In order to assess efficacy we would accept equivalency in terms of 90% event free survival from 
progression at 3 years.  We will re-assess the therapy after every 10 patients completes the study.  One 

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failure within every ten patients would close the study.   Following concurrent carboplatin, vincristine, 
and craniospinal radiation at 24 Gy, patients will receive the current standard adjuvant chemotherapy.  
 
3.0  
BACKGROUND AND RATIONALE 
PNET is a class of brain tumors that consists of medulloblastomas (in the cerebellum) and 
supratentorial PNETs. These are two subgroups of the same tumor type that have the same risk profile. 
They tend to metastasize through the cerebral spinal fluid pathways.    PNETs are classified by the 
World Health Organization as grade IV tumors (highly malignant) (Kleihues & Cavenee, 2000).  
PNETs occur most commonly in children aged 4 weeks to 10 years, with peak age of diagnosis at age 
five. Up to one third of patients have metastatic disease at diagnosis (Kleihues & Cavenee, 2000).  
Disseminated disease has been found to be an adverse prognostic factor (Packer et al, 1994; Boyett et 
al, 1995).  Other poor prognostic factors include primary tumors that are not cerebellar or pineal; age 
less than 3 years; and significant post-operative residual tumor (Cohen et al, 1995; Jenkin et al, 1990). 
 
Adding chemotherapy to radiation is proposed to enhance the response on tumor burden (Steel, 
1979).   This increased response may occur because of increased cell death, decrease in radiation-
induced damage repair, and prevention of tumor cell rebound growth in response to radiation therapy 
(Wilkins et al, 1993).  Cells may also be induced out of the resting phase and become more chemo and 
radio-sensitive.  It is also postulated to eliminate systemic micrometastases concurrently to the primary 
tumor.   
 
It is known that platinums can potentiate the efficacy of radiation (Douple & Richmond, 1978).  
Platinums radiosenstize hypoxic cells and possibly keep tumor cells in the radiosensitive phase of the 
cell cycle (Skov & MacPhail, 1991; Douple et al, 1985).  Inhibition of “sublethal damage repair” and 
“potentially lethal damage recovery” is caused by the potentiation of radiation biochemically (Fu & 

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Phillips, 1991).  This has been demonstrated by cisplatin in a brain tumor cell line (Wilkins et al, 
1993).  In addition, chromosomal aberrations may be increased (Schwachoffer et al, 1991). 
 
  Frequent low-dose carboplatin administration has been shown to be surprisingly effective in 
several pediatric brain tumors. This sensitivity to low-dose carboplatin is currently unexplainable by 
standard modeling (Mastangelo et al, 1995; Gaynon et al, 1990). Seven of 15 patients with recurrent 
PNET treated with weekly doses of carboplatin showed response to treatment (Allen et al, 1987).  The 
majority of patients received 175 mg/m2/week.  Only low tissue levels of carboplatin are necessary to 
be radiosensitizing because the unbound drug has a half-life of 6 hours (Albers & Mason-Liddil, 
1989).  Therefore, the recent national cooperative group study chose to use 35 mg/m2/day to establish 
sufficient radiosensitizing levels (Jakacki et al, 2006). 
 
 Daily administration of platinum during fractionated radiotherapy has shown positive results in 
solid tumors (Bartelink et al, 1986; Schaake-Konig et al, 1992; Jakacki et al, 2006).  Concurrent 
chemotherapy and radiation with lower continuous dosing appears to have more effect on tumor cells 
than normal tissue with reduction of acute and late toxicities (Schaake-Konig et al, 1992; Steel, 1988; 
Jeremic et al, 1995; Jeremic et al, 1996).  A trial of concurrent cisplatin and radiotherapy in patients 
with non-small cell lung cancer improved survival and local disease control compared to radiation 
alone (Schaake-Konig, 1992).  Weekly cisplatin with radiation showed no significant difference.  
Esophagitis was not increased, but nausea and vomiting occurred in most patients.   Head and neck 
cancer patients on a Phase I/II study of concurrent carboplatin and radiation had significantly improved 
survival rates than historical data with sequential chemoradiotherapy (Volling et al, 1992). 
 
Glioblastoma multiforme patients were treated with Carboplatin (33mg/m2) daily for five days 
during the first and fourth week of radiation therapy.  Toxicity included Grade III and IV neutropenia 
in 25% of the patients and thrombocytopenia in 10% of patients.  Neurotoxicity from radiation necrosis 
was not higher than in patients with radiation alone (Levin et al, 1995).  Ausili-Cefari et al, gave 

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continuous infusion Carboplatin at a dose of 30 mg/m2/day for either 14 or 21 days during radiation 
therapy to head and neck cancer patients.  Only the patients who had carboplatin for 21 days had 
leukopenia and thrombocytopenia.  There were no serious infections.  Six of twelve patients developed 
mucositis, none requiring interruption of treatment (Ausili-Cefaro et al, 1995).  A Phase I study of bi-
weekly Carboplatin during radiation therapy for children with brain stem gliomas showed a mean 
tolerated dose of 280 mg/m2/week for seven weeks (Allen et al, 1995).  
 
Craniospinal irradiation has improved the survival rates for medulloblastoma, but it has also 
been implicated in poor quality of life related to impaired cognitive functioning that worsens over time 
(Packer, 1989).  Radcliffe et al showed that whole-brain radiotherapy decreases IQ.  Age is inversely 
correlated with loss of IQ.  Children younger than 7 at diagnosis showed a significant loss of IQ points 
(Radcliffe et al, 1992).   
Ribi, et al, (Ribi et al, 2005) followed 51 children who were consecutively diagnosed with 
medulloblastoma.  Only two of the patients did not receive radiation because they were less than 3 
years old. The other children received between 23.4-36.0 Gy craniospinal irradiation and with a boost 
of 48.0-55.0 Gy irradiation to the tumor bed.  Significant deficits in neurocognitive functioning were 
seen in all of the patients.  They had concurrent endocrine deficits (61%), neurological complications 
(72%), and significant school problems (72%)  
Reduced dose craniospinal radiation has been shown to decrease the cognitive deficits.  
Mulhern et al demonstrated, in 22 children with medulloblastoma, that less severe neuropsychologic 
injury occurred when treated with only 23.4 Gy instead of 36 Gy craniospinal radiation.  Once again, 
age was correlated with toxicity, with older children experiencing fewer cognitive deficits than 
younger children (Mulhern et al, 1998). 
Goldwein, et al, treated 10 children diagnosed with medulloblastoma between 18 and 60 
months of age with reduced craniospinal radiation .  The patients received reduced dose craniospinal 

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radiation, a radiation boost to the tumor bed and standard maintenance chemotherapy.  Survival at over 
6 years was 70%, which is the accepted national survival rate for medulloblastoma with 36 Gy 
craniospinal radiation.  The survivors had minimal neurocognitive damage, but did have decreased 
growth rates (Goldwein et al, 1996).  
We therefore propose extending the benefits of reduced dose craniospinal radiation to 
metastatic medulloblastoma patients and high-risk, non-metastatic supratentorial PNET patients, and 
metastatic PNET patients by adding the concurrent carboplatin to the reduced dose radiation.  Data 
regarding neuropsychologic outcome in children treated for non-metastatic medulloblastoma, with 36 
Gy craniospinal radiation, and the same maintenance chemotherapy (Packer et al, 2006) is available, 
and will serve as a control group to assess the benefit of a reduced radiation dose. 
4.0 
METHODS 
4.1 
Eligibility Criteria 
Inclusion Criteria 
• Age greater than 3 years and less than 25 years. 
• Patients with one of the following diagnoses by histological diagnoses and by head and spine MRI: 
• Classic histology metastatic medulloblastoma 
• Desmoplastic histology metastatic medulloblastoma  
• High-risk supratentorial, non-metastatic, PNET 
• Metastatic PNET 
• Newly diagnosed patients who have not received prior therapy, with the exception of one short 
course of emergent chemotherapy in newly presenting patients with neurological compromise per 
provider decision 
• Only patients who are expected to survive at least 6 weeks will be eligible for this study.   
 

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Exclusion Criteria 
 
• Anaplastic histology will be excluded 
 
• Patients who are pregnant may not be treated on this study 
 
4.2 
Subject Enrollment  
 
Approximately 10 subjects will be enrolled locally at Children’s Hospital Colorado.  Eligible subjects 
will be offered participation in the study by their primary physician through the Neuro-Oncology 
Program at Children’s Hospital Colorado.  The subjects may be inpatients or outpatients. 
4.3 
Informed Consent Procedure 
 
The investigator (or designee) will obtain written informed consent/assent from each subject or their 
authorized representative who participates in the study, before the initiation of any study procedures. 
All physicians, nurses, and study coordinators who are involved with the study and may perform any 
or all parts of the consent process have been educated in research principles and certified by taking the 
applicable COMIRB education course(s). The consent/assent will be explained in an environment that 
is private, quiet, and conducive to effective communication.  Explanation will be given at the level of 
comprehension of the consentee.  A dialogue between the subject and/or parent and the investigator 
will confirm the understanding and agreement to participate.  
 
Non-English Speaking Subjects 
 
This study will follow the COMIRB guidelines regarding Non-English speaking subjects, per the 
following from the COMIRB Instructions for Clinical Investigators: 
45 CFR 46.117 (b)(2) permits oral presentation of informed consent in conjunction with a short form 
stating that the elements of informed consent have been presented orally, for studies that will include 
non-English speaking subjects but not purposely recruit them. A study is permitted to utilize the short 

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form up to three times in the same language. If a 4th subject is to be enrolled then a translation of the 
entire consent form should be provided.  
After the English version is approved, a translated consent form should be obtained by the investigator 
and submitted to COMIRB. The credentials of the translator must be provided to COMIRB. The 
translator must have expertise (native language or evidence of fluency) in the language including 
medical and legal terminology, in order to translate consent forms.  When the translated consent form 
is used with a subject, the person obtaining consent and the subject or their representative will sign the 
non-English consent form. 
A translator fluent in the subject’s language and English must read the consent summary to the subject 
or their representative.  A written summary of what is presented orally is also required.  A witness to 
the oral presentation is required, and the translator can also serve in this role.  The subject or their 
representative and the witness (translator) must sign the Short Form.  The person obtaining consent as 
authorized under the protocol and the witness (translator) must sign the Consent Summary.  The 
subject must be given copies of the Short Form document and the Consent Summary.  The investigator 
must have a plan for how to answer the subject’s questions and assess comprehension in the subjects’ 
native language.  The subject or his/her representative walks away with:  (1) the short form written 
consent in the subject’s language; (2) the long standard consent in English; (3) a copy of the summary 
of the oral presentation. 
Forms required for oral presentation of consent: 
• Short Form.  This must state that the elements of consent have been presented orally to the 
subject and it must be in the language the subject is fluent in.  A template of the Short Form 
is available in a variety of languages on the COMIRB web site under Forms.  The subject or 
their representative and the witness, who in most cases is the translator, must sign this form.  
Consent Summary.  The COMIRB approved English language consent form can serve as 

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the consent summary.  The person obtaining consent and the witness (translator) should 
sign this. 
Health outcomes on all subjects will be studied, but only an English-speaking subset will be measured 
for neuropsychologic outcomes due to the limitations of the testing measures used in this study in order 
to compare to the control group. 
4.4 
Confidentiality 
 
The clinical and laboratory data for each patient are part of their medical records at Children’s 
Hospital Colorado. Laboratory data are computerized at CHCO and accessible to authorized staff that 
have a laboratory password.  Patient data will also be entered into Children's Hospital Colorado Neuro-
Oncology Program database. This information will be used by the principal investigator for data 
collection and analysis and will only be accessible to qualified staff working on this research project. 
The database is a secure, password-protected database. Completed data forms for each patient on study 
at Children’s Hospital Colorado will be kept in locked cabinets, accessible only to study team 
members. The clinical research associates will monitor the level of authorization/consent signed by the 
patient to assure that authorization has been obtained for release of all data that are released.   
4.5 
HIPAA Authorization Procedure 
Written authorization will be obtained at the time the consent is obtained, as this study will 
collect protected health information from the subjects.  The principal investigator(s) or qualified 
designee will explain the HIPAA regulations in the combined consent/HIPAA authorization form. The 
clinical research associates will assure that the consent/HIPAA authorization form has been properly 
signed and dated prior to study entry, and that the subject/parent receives a copy of the signed and 
dated form.  The program database will contain the date the consent/HIPAA authorization form was 
signed. Information will be released only to those specified in the consent/HIPAA authorization form. 
 

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5.0  
TREATMENT PROGRAM 
5.1 
Chemoradiotherapy 
Within 28 days of diagnosis, patients will start radiation therapy, at a dose of 24 Gy.  The 
craniospinal axis will be treated first.  Daily carboplatin will be given at 35 mg/m2 IV over 15-20 
minutes Monday through Friday, approximately 1-4 hours prior to radiation for 6 weeks (total of 30 
doses).  Weekly Vincristine will be given at 1.5 mg/m2 (standard therapy) for 6 weeks.   
Following radiation, patients will receive the current national standard of maintenance 
chemotherapy with a cisplatin backbone.  Maintenance chemotherapy will always reflect the national 
cooperative group’s evidence-based standard of care. Subjects will be followed during maintenance, 
but no research testing will be conducted during this standard of care chemotherapy. The first dose of 
carboplatin should be administered on the first day of radiation therapy, unless the patient needs 
emergent treatment, in which case carboplatin may be administered prior to the first day of radiation 
therapy. Carboplatin will be administered in 25 ml NS IV over 15 minutes approximately 1-4 hours 
prior to radiation therapy.  This should be sufficient time for patients who may require sedation or who 
travel to another facility.   
If a radiation treatment is not given, carboplatin should be held as well.  If a dose of carboplatin 
is given and radiation therapy is NOT administered due to sedation or technical issues, the carboplatin 
dose should not be made up at the end of radiation (i.e. no more than 30 doses of carboplatin should be 
given).  Since there are 31 fractions of radiation, the last radiation treatment will not be preceded by a 
dose of carboplatin. 
Pregnancy tests will be done per standard of care protocol at screening and prior to any 
treatments.  Subjects should not be pregnant prior to starting the study, or become pregnant, nurse a 
child, or father a baby while on this study because the study treatment may harm an unborn baby, 
nursing child, or pregnant female.  Subjects must use effective birth control while on this study.  

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Subjects will be counseled by the medical staff regarding this issue as necessary.  Any pregnancy that 
inadvertently occurs in a study subject or a partner of a subject must be reported to COMIRB as an 
unanticipated problem with the required documents and the study will be re-reviewed at that time.   
5.2  
Supportive Care During Chemoradiotherapy 
5.21  G-CSF During Radiotherapy 
CBCs will be obtained weekly.  If ANC is less than or equal to 500/microliter, G-CSF will be 
administered 5 mcg/kg/day subcutaneously or IV until ANC is greater than 500.  In the event of 
potentially life-threatening infection with neutropenia, G-CSF may be increased to 5 mcg/kg/dose 
twice daily.  
Significant myelosuppression may occur, particularly during the last two-three weeks of 
radiation, although this has been relatively infrequent.  However, radiation should not be withheld for 
myelosuppression alone.  Radiation should be continued even if the patient is hospitalized with fever 
and neutropenia as long as the patient is clinically stable.  Administration of the boost should not be 
substituted for craniospinal radiation in the face of low counts. 
5.22  Platelets 
Platelets should be transfused as clinically indicated, and in all patients with counts <10,000/microliter.  
5.23  Red Blood Cells 
Patients should be transfused as necessary to maintain a hemoglobin greater than or equal to 8. 
5.24  Pneumocystis Prophylaxis 
Pneumocystis prophylaxis with trimethoprim/sulfamethoxazole (5 mg/kg/day of trimethoprim in two 
divided doses given 2 consecutive days per week) is recommended for all patients during 
chemoradiotherapy, and should be continued during the maintenance chemotherapy.  Pentamidine (4 
mg/kg every 3 weeks) is recommended for patients who are allergic to trimethoprim/sulfamethoxazole. 
 

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5.25  Nutrition 
Patients are to be weighed weekly.  If there is greater than 10% weight loss, megestrol (megace) at 10 
mg/kg in two divided doses or nutritional support, either enterally or parenterally, should be 
considered. 
5.26  Fungal Prophylaxis 
Patients on this protocol are likely to develop mucositis and esophagitis and will be more susceptible to 
oral and esophageal candidiasis.  In the event of candidiasis, Fluconazole (3 mg/kg/day) is 
recommended. 
5.27  Emesis 
Although carboplatin at these doses is unlikely to cause nausea and/or vomiting, patients may 
experience nausea and/or vomiting during the first few craniospinal radiation treatments.  Prophylactic 
anti-emetic therapy with either Ondansetron or Granisetron should be used, at least during the first 
week. 
5.28 
 Maintenance chemotherapy 
Maintenance chemotherapy will commence six weeks after radiation has been completed, or when  
ANC > 1000/µL and platelets >100,000/µL, whichever occurs last.   
5.3  
Dose Modification 
5.31  Hematologic Toxicity 
Patients may develop myelosuppression, especially during the last 2-3 weeks of radiation therapy.  See 
sections 5.21-5.23.  No dose modifications of Carboplatin or radiation therapy will be made. 
 
 
 
 

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6.0  
REQUIRED OBSERVATIONS 
6.1 
Pre-Treatment and During Chemoradiotherapy 
Evaluation 
Pre-Study 
Weeks 1-3 
 
Weeks 4-6 
 
Weeks 7-9 
(After start of 
XRT) 
Weeks 10-12 
(After start of 
XRT) 
CBC with diff, platelets 
X 
weekly 
weekly 
if clinically 
indicated% 
if clinically 
indicated 
 
Physical exam neuro exam*, 
height, weight, Lansky/Karnofsky 
performance status* 
X 
weekly 
weekly 
 
 
 
Electrolytes, Ca,  Creatinine, 
BUN, SGOT, bilirubin 
X 
q o week 
q o week 
 
if clinically 
indicated 
 
MRI of the head (T2-weighted 
imaging and T1-weighted imaging 
pre- and post-contrast) and spine 
with contrast 
X# 
 
 
 
X+ 
(week 10) 
 
Lumbar CSF cytology@ 
X 
 
 
 
X+ 
Audiogram 
X 
 
 
 
          X 
Neuropsychologic Testing 
 
 
 
X! 
 
+  
Spine MRI and cytology to be done only if initially positive 
#  
Post-op MRI should be done within 72 hours of surgery. For patients who undergo stereotactic biopsy only, post-
op MRI is not required. Spinal MRI is required within 28 days of surgery if done post-operatively and within 7 days of 
surgery if done pre-op. (If MRI scan is performed within 7 days prior to surgery, then only a post-contrast examination is 
required). A pre-operative spinal MRI scan is preferable for patients with posterior fossa tumors because surgically-induced 
inflammation/blood can be difficult to distinguish from tumor. 
%  
If counts are low, CBC should be performed twice weekly. 
@  
Ventricular CSF (either pre-or post-op) may be used only if a post-operative spinal tap is  contraindicated. If a 
spinal tap is contraindicated and there is no ventricular CSF available, then CSF  cytology can be waived for patients with 
supratentorial tumors or if there is documentation of spinal subarachnoid metastases (M3).  
*See Appendix 1 for neurological exam guidelines and Appendix 2 for Karnofsky/Lansky performance scales. 
! Baseline neuropsychologic testing will be done between 3 – 6 months post-radiation, as was done on the 9961 protocol .  
An abbreviated battery will be utilized.  See Appendix 3 for testing protocols. 
 
6.2 
 Pre-Study Examination:  
• A full clinical examination with particular detail to neurological deficits must be carried out at 
diagnosis. A formal neurological examination should be performed on entrance to study.  It is 
imperative that neurological deterioration on therapy be adequately documented. 

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• Imaging: An MRI 3-dimensional assessment of head (with and without contrast) and spine (with 
contrast) at diagnosis. 
• CSF involvement is defined as presence of tumor cells in the lumbar CSF.  Lumbar puncture will 
be obtained > 7 days after surgery at diagnosis.  CSF should be obtained > 7 days post-operatively 
for posterior fossa tumors to minimize the risk of false positive results that do not represent true, 
viable metastases.  Tumor cells in the cisternal CSF are not considered prognostic and may not be 
considered in the definition of CSF involvement. 
• Hematology/biochemistry (CBC with differential and platelet count; Chemistry panel - 
Electrolytes, calcium, creatinine, BUN, SGOT, bilirubin,). 
• A baseline audiogram will be obtained. 
6.3 
Evaluation During Treatment 
• A physical exam, including a formal neurological exam (see Appendix 1) and height, weight, and 
performance status (see Appendix 2) will be performed weekly during chemoradiotherapy. 
Hematology:  Regular CBCs with differential and platelet count will be performed weekly during 
chemoradiotherapy.  If the ANC falls below 1000, CBC should be checked every 3-5 days. In the 
event of potentially life-threatening infection with neutropenia, G-CSF may be increased to 5 
mcg/kg/dose twice daily.  
• Audiogram: Will be repeated 4-6 weeks after the completion of chemoradiotherapy. 
• Chemistry (Electrolytes, calcium, creatinine, BUN, SGOT, and bilirubin) will be performed every 
other week during weeks 1-9.   
• Imaging: A MRI scan of the head (with and without contrast) and spine (with contrast) should be 
performed at 4-6 weeks after the completion of chemoradiotherapy.  
• CSF involvement at diagnosis:  A lumbar puncture will be repeated 4-6 weeks after the completion 
of chemoradiotherapy. 

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• Neuropsychologic testing will be performed 3-6 months after radiation is completed (see Appendix 
3). 
6.4 
Evaluation Following Protocol Therapy 
Starting from the end of radiation therapy until 5 years after the end of radiation therapy, physical 
exam (as described above), CBCs and blood chemistry (if clinically indicated), MRIs of the head and 
spine, lumbar punctures, audiograms, neuropsychologic testing and thyroid function tests will be 
performed according to the intervals in the table in section 6.5. 

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6.5 
Required Observations Following Protocol Therapy 
Evaluation 
(Dated from the End of RT) 
4 
mos 
6  
mos 
8  
mos 
12 
mos 
15 
mos 
18 
mos 
21 
mos 
24 
mos 
30 
mos 
36 
mos 
42 
mos 
48 
mos 
60 
mos 
At Relapse/ 
Disease 
Progression 
Physical exam, neuro exam*, height, weight, 
Lansky/Karnofsky performance status* 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
 
CBC with diff, platelets 
X 
X 
X 
X 
 
 
 
 
 
 
 
 
X 
 
MRI of the head (pre- and post-contrast)  
X 
 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
MRI of the spine with contrast+ 
X 
 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Lumbar CSF cytology+ 
X 
 
 
X 
 
 
 
X 
 
X 
 
 
 
X 
Audiogram 
 
X 
 
X 
 
 
 
X 
 
X 
 
X 
X 
 
Thyroid Function Evaluation (Free  
T4 and TSH) 
 
X 
 
X 
 
 
 
X 
 
X 
 
X 
X 
 
 
Neuropsychologic Testing  
 
 
 
 
 
 
 
X! 
 
 
 
 
X! 
 
!Neuropsychologic testing: See testing requirements in  Appendix 3   
+ Spine MRI and cytology to be done only if initially positive 
*See Appendix 1 for neurological exam guidelines and Appendix 2 for Karnofsky/Lansky performance scales.

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7.0  
DRUG INFORMATION 
7.1  
Vincristine (Oncovin) 
NSC-67574. Commercially available. 
7.12 
Formulation 
Clear liquid, 1 mg, 2 mg, and 5 mg vials. 
7.13 
Storage 
Refrigerate. Protect from light. 
7.14 
Stability 
Multiple-dose containers with preservatives are stable 30 days after opening if refrigerated. 
7.15 
Toxicities 
Neuromuscular effects, peripheral neuropathy, jaw pain, abdominal pain, mucositis, nausea and 
vomiting, hypersensitivity, urinary retention, optic atrophy (rare), blindness (rare), constipation, 
loss of deep tendon reflexes, foot and wrist drop, paresthesia, alopecia, convulsion (rare), 
hyponatremia (SIADH), severe soft tissue damage if extravasated. Vincristine is very irritating 
and must not be given IM, subcutaneously or intrathecally. Intrathecal administration of vincristine 
almost always has resulted in death. 
 
7.2  
Carboplatin (Paraplatin) 
NSC-241240. Commercially available. 
7.21 
Formulation 
Lyophilized powder, 50 mg, 150 mg, and 450 mg of Carboplatin per vial. Each vial contains equal 
parts by weight of carboplatin and mannitol. 
7.22 
Storage 
Room temperature. Protect from light. 
 

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7.23 
Reconstitution 
Reconstitute each vial with NS, sterile water, or D5W to achieve a final concentration of 10 mg/ml. 
Further dilution to concentrations as low as 0.5 mg/ml with NS or D5W is acceptable. 
7.24 
Stability 
Discard infusion solution 8 hours after preparation, since it contains no antibacterial preservative. 
7.25 
Toxicities 
Myelosuppression, nausea and vomiting, transient liver function abnormalities, paresthesia and 
high frequency hearing loss, abnormalities in serum creatinine and creatinine clearance, proteinuria, 
hypocalcemia, and hypomagnesemia.  
 
8.0 
RESPONSE CRITERIA 
The same method used to quantitate tumor status prior to starting this study must be used to measure 
tumor status after treatment.  Therefore, only MRI scans will be used to determine response or 
progression of disease. 
• Complete Response (CR):  Complete resolution of tumor on MRI scan 
• Partial Response (PR):  A reduction of at least 50% in tumor area of bidimensional measurable 
lesions.  In addition, there can be no appearance of new lesions or progression of any lesion.  
• Stable Disease (SD):   A decrease of   less than 50%   or an increase of less than 25% in the tumor 
area of bidimensional measurable lesions . 
• Progressive Disease:  Greater than a 25% increase in the bidimensional tumor  area  compared to 
the immediate pre-study area or compared to area of best prior response at that site, or the 
reappearance of tumor in sites of involvement which had responded completely to therapy 
(including surgery), or appearance of tumor in a previously uninvolved area.  
 

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9.0 
CRITERIA FOR REMOVAL FROM PROTOCOL THERAPY, FOLLOW-UP, AND 
OFF STUDY CRITERIA 
 
9.1  
Criteria for Removal from Protocol Therapy 
Patients may be removed from protocol therapy prior to completion under the following 
circumstances: 
a) Disease relapse/progression (see Section 8.0) 
b) Parent/patient request 
c) Death 
d) Physician or investigator’s discretion 
Discontinuation for other reasons will be considered protocol deviations. 
 
9.2  
Removal from Protocol Follow-up 
Patients may be removed from protocol specified follow-up under the following circumstances: 
a) Death 
b) Parent/patient request 
c) Entry onto a sanctioned second line therapeutic study or follow-up study. 
 
10.0  NEURORADIOLOGY GUIDELINES 
 
10.1  Whole Brain MRI With and Without Contrast 
To document the degree of residual tumor, postoperative MRI scan, with and without contrast, 
must be done prior to beginning therapy. For patients who undergo stereotactic biopsy only, a post-
operative MRI is not required. For patients with M2 and M3 disease, a post-op MRI is strongly 
encouraged, but not mandatory. 
Postoperative MRI should be done within 72 hours of surgery, when there is less edema or 
postoperative enhancement, which can make measurements of residual tumor difficult. An MRI with 

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and without contrast should be done 4 weeks after the completion of radiotherapy, prior to cycle 4 and 
one month after cycle 6 of maintenance chemotherapy, during follow-up, and at relapse . 
10.2 
 Pre- or Post-operative Spinal Axis Imaging 
An MRI with and without gadolinium of the entire spine (through the inferior extent of the 
thecal sac) is required either 7 days prior to or within 28 days after surgery and at relapse. If an MRI 
scan is performed within 7 days prior to surgery, then only a post-contrast examination is necessary. 
Note: a pre-operative MRI scan of the spine is preferable for patients with posterior fossa 
tumors because surgically-induced inflammation/blood can be difficult to distinguish from 
tumor.  
 
11.0  NEUROSURGICAL GUIDELINES 
 
11.1  Types of Surgery 
A craniotomy or craniectomy is necessary to remove the bulk of the tumor, to reestablish CSF 
circulation, and to provide tissue for diagnosis. The goal of the operation should be a gross total 
resection unless involvement of vital structures or widely disseminated disease makes this impractical. 
In the posterior fossa, a gross total resection should be accomplished unless there is invasion of the 
floor of the fourth ventricle, middle cerebellar peduncle, cerebellar pontine angle, or other brain stem 
structures. In the supratentorial space, a gross total resection should be accomplished unless the tumor 
invades deep structures, such as the hypothalamus, or functionally important cortex, such as the motor 
or speech cortex. If the tumor appears near functionally important cortex on the pre-operative scan, 
consideration should be given to intraoperative cortical mapping with the aim of sparing functional 
cortex while achieving the greatest tumor resection possible. 
 
If the post-operative MRI scan (obtained within 72 hours of the operation) reveals residual 
resectable tumor, a second operation should be considered to remove the remaining tumor. Few, if 
any, patients should be entered into this study with biopsy only or partial resections. 

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Biopsy alone, with no attempt at resection, may be associated with a statistically worse survival 
and should not be done except in the setting of widely metastatic disease and a small primary tumor. 
No patient will be entered without a diagnosis established by microscopic examination of tumor tissue. 
11.2  Staging Criteria 
 
11.21  Extent of Resection/Surgical Confirmation 
a) Biopsy Only: If tumor removal is less than 10% of the total tumor mass, this will be considered a 
biopsy only. 
b) Partial Resection: The surgical removal of greater than 10%, but less than 50%, of the tumor mass. 
c) Sub-total Resection: The surgical removal of greater than 50%, but less than 95%, of the tumor 
mass. 
d) Radical Subtotal Resection (Near Total): The surgical removal of greater than 95%, but less than 
100% of the tumor mass. 
e) "Gross Total" Resection: No visible tumor is left at the time of surgery and is confirmed by 
postoperative CT or MRI. 
11.22  Metastasis Stage (M0-M4) 
The surgeon should inspect the regional leptomeninges and a decision should be made as to whether 
metastatic nodules are present in the arachnoid or whether the entire leptomeningeal surface is 
infiltrated with tumor. If there is any question, a small segment of arachnoid should be excised and 
sent as a separate specimen. 
11.23  MRI Confirmation 
All patients will have confirmation of the neurosurgical assessment of the extent of resection 
with a postoperative MRI scan, without and with contrast. This scan should be carried out within 72 
hours postoperatively.  Bidimensional measurements of residual tumor volume should be obtained. For 

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patients who undergo stereotactic biopsy only, a post-operative MRI is not required. For patients with 
M2 and M3 disease, a post-op MRI is strongly encouraged, but not mandatory.  
 
11.3  Peri-operative Corticosteroids 
Some patients with large tumors may require corticosteroid therapy preoperatively to reduce associated 
cerebral edema.  
a) Usual corticosteroid dosage is 0.25 to 1 mg/kg/day of dexamethasone, in divided doses, every 4-6 
hours. 
b) Corticosteroids may be continued during the peri-operative period, but the dosage, dose interval and 
duration of steroid therapy must be noted, and every attempt made to taper and discontinue  
corticosteroid therapy as soon as clinically feasible. 
 
11.4  Pathology Studies 
As much tumor as possible should be sent for pathology and biologic studies. Tissue should go directly 
to the institutional pathologist in saline (wrapped towel) prior to fixation in formalin for histologic 
diagnosis. 
 
11.5  Shunts 
a) Children may need preoperative external ventricular drains, if they are symptomatic because of 
tumor-induced hydrocephalus. 
b) After removal of the tumor and the external drains, approximately 30% of patients with 
medulloblastoma/PNET will require a CSF shunt because of permanent hydrocephalus. 
c) The routine use of pre-operative shunts or shunt filters is not encouraged. 
 
12.0  RADIATION THERAPY GUIDELINES 
The craniospinal and boost radiation techniques outlined below are standard for this tumor. 

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ATTENTION: The radiotherapy guidelines for this protocol do not allow for treatment breaks except 
in the setting of clinical instability.   
12.1  Timing of Radiation Therapy 
All patients shall receive irradiation to the cranio-spinal axis (CSA) followed by a boost to the primary 
tumor site (posterior fossa or supratentorial) as well as to CNS metastatic sites. All patients shall begin 
radiation treatments after registration on study and within 35 days of definitive surgery. 
12.2  Equipment 
12.21  Modality 
Photon irradiation shall be used. 
12.22  Energy 
The cranial field should be treated with megavoltage photons with energies in the range of 4 – 6 MV. 
The primary site boost will usually be given with similar energy, but for centrally located primary 
tumors, the boost may be given with a photon beam of higher energy. In such cases, an isodose plan 
should be submitted with the quality assurance material. Photon of energy 4 to 6 MV will generally be 
used for spinal irradiation but electrons of suitable energy may be used. 
12.23  Geometry 
All patients must be treated on isocentric machines. All machines must have a minimum source- to- 
axis distance (SAD) of 80 cm. Treatments may be given with fixed SSD techniques.  
12.24  Simulator 
All patients must be simulated on a dedicated radiation therapy simulator. 
12.25  Immobilization Devices 
For craniospinal irradiation, immobilization devices such as head holders or custom mold are required. 
Head immobilization with a thermoplastic mask or head frame is required when 3D treatment planning 
is used. The immobilization device should limit daily motion to a maximum of ± 3– 5mm. 

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12.3  Treatment Volume Anatomical Description 
12.31  Treatment Volumes 
 
Definitions: 
• Gross Target Volumes (GTV): The Gross Target Volume (GTV) is based upon the T1 weighted MRI 
with and without Gadolinium contrast.  Identification of the GTV shall be based upon pre-operative 
extent and anatomic shifts or changes after surgery. The GTV should include any residual enhancing 
tumor mass and the wall of the resection cavity. 
• Clinical Target Volume (CTV): The Clinical Target Volume (CTV) is defined as the GTV plus a 1.5-
cm margin  
• Planning Target Volumes (PTV): The Planning Target Volume (PTV) margin should be an additional 
0.3 to 0.5 cm around the CTV, depending on the setup error of the treatment modality used. In 
treatment planning, shielding of critical structures should be attempted.  At least 95% of the prescribed 
study dose (55.8 Gy) must encompass at least 95% of the PTV as shown by DVH.  No part of the PTV 
should receive less than 50 Gy.  
• Treated Volume (TV): The volume enclosed by an isodose surface that is selected and specified by 
the radiation oncologist to which the prescribed dose is delivered. 
12.32  Treatment Volume 
The target volume for the initial portion of the treatment is the entire cranio-spinal axis (the entire 
subarachnoid space). The target volume for the boost is the tumor bed and the residual tumor if the 
primary site is in the infratentorial region of the brain. The target volume for the boost for 
supratentorial tumors is 1 cm around the tumor as seen on the pre-surgical MRI scan. Metastatic 
tumors will receive boost irradiation with a 1 cm margin around the tumor as seen on a pretreatment 
MRI scan. 3D treatment planning may be used to plan the boost portion of the treatment.  
12.33  Cranio-Spinal Axis 

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The cranio-spinal axis comprises the whole brain as well as the spinal cord and thecal sac. The whole 
brain treatment volume should extend anteriorly to include the entire frontal lobe and cribriform plate 
region. The superior orbital tissue (but not the posterior globe) should be included in the volume. The 
treatment volume should extend at least 0.5 cm inferiorly below the base of the skull. The volume 
should extend inferiorly to the superior border of the spinal field. The spinal treatment volume should 
extend laterally to cover the recesses of the entire vertebral bodies, with at least a 1.0 cm margin on 
either side. It should extend superiorly to the border with the cranial field and inferiorly 1-2 cm below 
the termination of the thecal sac. This position should be determined from a sagittal MRI and will 
always be at least as low as the inferior border of the S2 and may extend to S4. A "spade" field may be 
required to obtain a 1.0 cm margin around the subarachnoid space at the level of the sacrum. The 
objective is to include the nerve roots as they exit the neural foramina. 
12.34  Posterior Fossa Boost 
The posterior fossa boost will be a conformal limited target volume boost.  3D-based treatment 
planning is mandatory for these volumes.  The Gross Target Volume (GTV) is based upon the T1 
weighted MRI with and without Gadolinium contrast.  Identification of the GTV shall be based upon 
pre-operative extent and anatomic shifts or changes after surgery. The GTV should include any 
residual enhancing tumor mass and the wall of the resection cavity. The Clinical Target Volume (CTV) 
is defined as the GTV plus a 1.5-cm margin except at bone or tentorial interface (where it remains 
within the confines of the posterior fossa). The Planning Target Volume (PTV) margin should be an 
additional 0.3 to 0.5 cm around the CTV, depending on the setup error of the treatment modality used. 
In treatment planning, shielding of critical structures should be attempted.  At least 95% of the 
prescribed study dose (55.8 Gy) must encompass at least 95% of the PTV as shown by DVH. No part 
of the PTV should receive less than 50 Gy.  
 

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12.35  Supratentorial Boost 
The treatment volume for a supratentorial boost will be defined using a 1 cm margin around the 
presurgical MRI defined tumor volume. In the event of proximity to normal tissue structures, this 
margin may be reduced to 0.5 cm to allow for shielding of critical structures. If the margins are 
reduced to 0.5 cm, this should be clearly stated and justified in the submitted QA documentation. As 
the total dose to the optic chiasm and both optic nerves should not exceed 50.4 Gy, these structures 
should be blocked accordingly. A supratentorial boost set up to treat metastatic disease (M2) should 
meet the same guidelines as that for a boost for a primary supratentorial tumor. 
12.36  Spinal Boost(s) 
For patients with spinal deposits of disease, focal boosts to the pre-chemotherapy volume with 
1cm margin (target volume) will be employed. 
12.4  Three Dimensional Treatment Planning 
Three dimensional (3D) treatment planning will be used for the whole brain and spinal axis treatments 
as well as any boosts.   
12.41  Planning System Requirements 
Any volume based treatment system e.g., conformal radiation treatments (co-planar or non-coplanar), 
stereotactic radiotherapy, intensity modulated radiotherapy, and proton therapy, is allowable if it 
satisfies the following criteria. Brachytherapy and stereotactic radiosurgery are not allowable. 
12.42  Treatment Planning 
Radiotherapy treatment planning will be based upon contrast-enhanced CT or MRI scan. This scan 
should be performed in the axial plane at a spacing of no more than 3mm. The scan should encompass 
the entire cranium and the cervical spine down to the level of at least C3. 
 
 

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12.43  Normal Tissue Volumes 
The following normal tissue will be defined on the treatment planning scan, and dose-volume 
histogram data will be reviewed for these structures:  
1) L, R Cochlear and vestibular apparatus bilaterally 
2) Supratentorial brain 
3) Pituitary gland 
4) L, R Optic nerves and chiasm 
12.44  Dose Prescription 
The radiation dose will be calculated and normalized to the isocenter of the beams used for treatment. 
The 95% isodose surface will be required to completely encompass the PTV. 
12.5  Treatment Dose 
12.51  Dose Definition 
12.511 Absorbed Dose Specification 
All doses shall be specified as cGy to water. 
12.512 Tissue Inhomogeneity Consideration 
Inhomogeneity correction should be made for bone and lung transmission. 
12.52  Prescription Point 
12.521 Brain 
If the brain is treated by parallel-opposed fields, the dose should be defined at a point along the central 
axis midway between the lateral entrance points (midplane). If an independent jaw or half-beam block 
technique is used, the dose should be specified at an off-axis point that corresponds to the midplane 
point used for a conventional "opposed lateral" treatment set-up. 
12.522 Spine 

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The dose to the spine should be prescribed along the central axis at a depth representing the posterior 
margin of the vertebral bodies as determined by cross-table lateral x-rays, MRI or CT scans. 
12.523 Primary Site Boost 
For 2D treatment plans the prescription point should be in the center of the target volume, i.e. along the 
central axis of the opposed beams, midway between the two entrance points. Note that the dose 
contribution to the posterior fossa dose from the whole brain fields should be considered equal to the 
dose prescribed to the whole brain. Correction for decreased separation should not be made. For 3D 
treatment plans, the prescription point should be as defined in Section 12.45. 
12.524 Other Boost Sites 
The dose to other boost sites will be calculated at the mid-tumor point calculated on the central axis of 
the boost fields. 
12.53  Total Treatment Dose 
12.531 Craniospinal Axis 
All patients will receive 23.4 Gy to the craniospinal axis. 
12.532 Primary Site Boost 
All patients with primary tumor in the posterior fossa will receive a boost of 32.4 Gy to the posterior 
fossa. All patients with a supratentorial primary tumor will receive a boost 32.4 Gy to the volume 
described in section 12.3. As noted there, the total dose to the optic chiasm and both optic nerves 
should be limited to 50.4 Gy. In addition, if the boost volume occupies more than 2/3 of the 
supratentorial compartment, the boost dose should be limited to 27 Gy. 
 
12.533 Metastatic Site Boost 
Patients with M1 disease will receive no additional boost. Patients with M2 disease (intracranial 
subarachnoid disease) will receive boosts of 32.4 Gy to focal areas of supratentorial or posterior fossa 
metastatic disease. If the volume of a boost to the supratentorial compartment exceeds 2/3 of the 

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supratentorial compartment volume, the boost will be limited to 27 Gy. The boost dose to the optic 
chiasm and both optic nerves must be limited to 27 Gy. 3D treatment planning may be used for 
boosting M2 disease. If 3D planning is used, definitions boost volumes for M2 disease will be the 
same as specified for boosts to the primary tumor.  Patients with M3 disease (spinal deposits of 
disease) are subdivided into those with diffuse disease and those with focal disease. Diffuse spinal 
disease is defined as radiographically visible multiple sites of disease in each of at least 3 out of 4 
spinal regions (i.e., cervical, thoracic, lumbar or sacral). 
 
If there is diffuse involvement of the spine, the entire spine will be treated to 23.4 Gy.  An MRI scan of 
the spine should be performed when the spine has received 23.4 Gy, and areas of visible disease 
remaining at that point should be boosted to 45 Gy when above the termination of the spinal cord and 
50.4 Gy when below the termination of the cord. If there are focal areas of spinal deposits which do 
not meet the definition of diffuse involvement defined above, the entire spine will be treated to 23.4 
Gy. The focal areas of tumor seen on the initial spinal MRI will be boosted to 45 Gy. Focal deposits 
below the termination of the cord as defined by the initial MRI will be boosted to 50.4 Gy.  The margin 
for boosting metastatic deposits will be at least 7 mm, and preferably 10 mm. 
 
12.54  Time Dose Consideration 
12.541 Daily Dose 
The daily dose to the prescription points should be 180 cGy. Corrections for a higher contribution of 
dose to the PF or upper cervical spinal cord from whole brain treatment should not be made. 
12.542 Fractionation 
All radiation fields should be treated once each day and treatments should be given 5 days per week. 
12.543 Unplanned Treatment Breaks 
Interruption or discontinuation of radiation will be permitted ONLY for: 

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1) Severe medical conditions precluding delivery of radiation. This does not include straightforward 
fever and neutropenia admissions (i.e. radiation therapy and carboplatin should continue to be 
administered without interruption). If radiation cannot be resumed within two weeks of 
discontinuation, the study chair should be informed and the patient will be off study.  
2) Hematologic toxicity alone should NOT result in unplanned treatment breaks.  
Only when the patient is clinically unstable, should radiation therapy be held. 
ONCE CRANIOSPINAL RADIATION THERAPY IS STARTED, IT IS TO BE COMPLETED 
WITHOUT INTERRUPTION (I.E. BOOST RADIATION SHOULD NOT BE 
ADMINISTERED INSTEAD OF CRANIOSPINAL RADIATION UNTIL COUNTS 
RECOVER).  
 
12.55  Dose Homogeneity and Reference Points 
12.551 Brain, Posterior Fossa and Supratentorial Boost 
Throughout the central plane, a dose homogeneity of +5% relative to the prescription point is required. 
A correction for the higher contribution of dose to the PF and upper cervical spinal cord from whole 
brain treatment is not required. In no instance will homogeneity exceeding 10% in the central plane be 
acceptable. 
12.552 Spine 
The maximum dose variation along the longitudinal axis of the spinal cord should be +5%. Tissue 
compensations may be required to achieve this degree of dose uniformity. The dose to the spinal cord 
at the level of T2 and L3 should be recorded as off-axis points. 
12.553 Uniformity Reference Points: 
The reference point for the posterior fossa due to the whole brain radiation will be the midplane of the 
skull at a point that will be along the central axis of the lateral posterior fossa boost points. The 
posterior margin of the vertebral body representing the anterior margin of the spinal canal will 

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represent the spinal cord uniformity reference point. The off-axis reference dose will be calculated at 
the anterior margin of the spinal canal at T2 and L3. The midplane of the cranium will be used as the 
uniformity reference point for the cranium. 
12.554 Allowed Methods of Dose Compensation 
To remain within the acceptable range of uniformity, the areas receiving higher dose may be blocked 
for the last few fractions of treatment. Wedges or tissue compensators may be used at the discretion of 
the individual radiation oncologist. 
12.6  Treatment Technique 
12.61  Patient Position 
For cranio-spinal irradiation the patient should be treated prone. The neck should be extended 
sufficiently to keep the mandible out of the exit beam of the spinal field but not so much as to exceed 
the dose uniformity specifications of the spinal field. Immobilization devices such as head holders or 
custom molds are required for 3D treatment plans. For boosting the posterior fossa or supratentorial 
sites, the patient may be in either the prone or supine position. 
 
12.62  Whole Brain Irradiation 
Parallel-opposed fields may be used. Alternatively, the field center can be placed near the match line 
with the spinal field and an independent jaw or half-beam block technique utilized. This method 
decreases overlap at the match line. The collimation of the brain field should be rotated to match the 
divergence of the spinal field according to the equation: 
Collimator angle = tan-1 (spine length/2) 
  
 
 
Source-to-axis distance 
 
The lateral fields may be angled posteriorly to spare the collateral lens, but, if this is done, great care 
must be taken to assure adequate coverage of the cribriform plate. Custom divergent blocking of at 

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least 5 HVL should be used to shape the brain field at the base of the skull and around the eyes. The 
brain field should extend to at least 1 cm beyond the periphery of the scalp. 
 
12.63  Spinal Cord 
Preferably, the spinal volume should be treated with a single posterior field. An extended SSD is 
preferable to the use of adjacent ports. If adjacent ports are necessary, the 50% decrement should cross 
at the posterior margins of the vertebral body. It is preferable that the match line be placed inferior to 
the spinal cord (below L2) and should be moved every 900 cGy. Custom blocking may be required at 
the inferior border of the spine. An attempt should be made to avoid exit through the jaw and mouth 
from the spinal field by hyperextending the neck, if the curvature does not compromise dose  
homogeneity. 
 
12.64  Abutting Fields 
With the use of collimator rotation and an independent jaw technique, the cranial and spinal fields may 
be directly abutted (light fields). Many radiation oncologists, though, are more comfortable with a gap 
between the cranial and spinal light fields. A gap of 0.5 cm is allowed on this protocol. The match line 
should be moved three times during treatment of the cranio-spinal axis. Also, a penumbra broadening 
"match line wedge" or a dynamic wedge may be used. The match line should never overlap the  
posterior fossa boost. Therefore, it is recommended that the first match line lie just above the shoulder, 
and the last 3-cm higher. Alternatively, the first match point could begin at the superior point and end 
at the inferior point. 
12.65  Primary Site Boost 
For patients treated with posterior fossa primary sites, the primary site boost should be treated by a pair 
of opposed lateral fields. For patients with supratentorial primary sites, or patients planned with 3D 
techniques, any appropriate configuration of fields is allowable. 

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12.66  Boosts to Metastatic Sites 
Intracranial metastases can be boosted by any appropriate technique. Spinal metastases should be 
treated with a posterior field. 
12.67  Field Shaping 
Individually cut blocks to shape the skull field at the base of the skull and eye are strongly 
recommended. Similarly, field shaping may be required at the inferior border of the spinal field. 
12.7 
Quality Review 
A retrospective quality review of radiotherapy planning and treatment will be performed by an 
independent radiologist. 
13.0 
 STATISTICAL CONSIDERATIONS 
This is a pilot study of concurrent carboplatin (CARBO), vincristine (VCR), and radiation 
therapy (XRT) followed by standard of care maintenance VCR and cyclophosphamide (CPM) ± 
cisplatin (CDDP) in children aged 3 to 25 years with metastatic medulloblastoma, high risk PNET and 
metastatic PNET.  Eligible patients comprise those with supratentorial PNET and infratentorial 
PNET/MB with initial stage M1-M4 or >1.5cc residual tumor remaining after surgery and classical 
histology. 
 
The primary objective of the protocol and the statistical analysis is to obtain preliminary 
estimates of event free survival (EFS) and to demonstrate less decrement in intellectual function in 
preparation for a future Phase III randomized trial including these treatments.  
 
 
Statistical considerations for the primary objective are addressed below. 
 
13.1  Patient Accrual 
The Neuro-Oncology Program at Children's Hospital Colorado has seen an average of 5 patients per 
year with metastatic medulloblastoma, high risk PNET and metastatic PNET.  We expect to enroll 10 

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patients.  The current standard of care CCG 9961 was based on a pilot study of 10 patients (Goldwein 
et al, 1996).  
13.2  Study Duration 
We originally anticipated that it would require approximately 24 months to complete accrual to this 
study.  However, at this time we are more accurately anticipating to complete enrollment by 2016.   
13.3  Study Endpoints 
13.31  Efficacy Endpoints 
Event-free survival:  Minimum time to disease progression or recurrence, time to death for 
any reason, or time to occurrence of a second malignant neoplasm (SMN). 
Overall Survival:  Time to death from any cause. 
Intellectual Competence:  Performance is as good as or better than patients treated on CCG 
9961 when adjusted for baseline performance 
13.33  Analysis of Efficacy 
If there are 1 or fewer deaths from tumor progression, within 10 patients, with 3 years median 
follow up, then a presumption can be made that the reduction in radiation dose has not led to a 
decline in efficacy.  The information would then be supplied to the national group (Children’s 
Oncology Group) as a potential next national Phase III, randomized study. 
13.4 
Interim Monitoring 
13.41  Interim Monitoring of Treatment Efficacy 
Because of the short duration of this study, therapeutic efficacy as measured by either EFS or 
survival, will not be subject to interim monitoring. The first formal analysis of this study will 
occur when median follow-up is approximately 18 months. The formal early monitoring of 
dose limiting toxicities and any toxic deaths will provide early warning of significant safety 
problems. 

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Because we expect a survival of approximately 90%, if there is one failure in ten patients, we 
will accept that as equivalent.  If there are 2 deaths from tumor progression within the first 10 
patients, the study will be closed.  All patients will subsequently be monitored.  If there are no 
further deaths and the number of patients is still less than 10, the study will be re-opened to 
accumulate a total of 10 patients.  The expectation is that there will be no toxic deaths.  Any 
toxic deaths will result in the suspension of the study, investigation into the cause of death, and 
discussion with the IRB. 
13.5  Gender and Ethnic Origin 
There is no compelling evidence to suggest that outcome of treatment for brain tumors in children is 
dependent on gender or ethnicity. Hence, the study size will not be powered to detect differences in 
outcome in groups defined by ethnicity or gender. Therapeutic outcomes will nevertheless be 
compared among gender and ethnicity categories. 
14.0  ADVERSE EVENT REPORTING REQUIREMENTS AND TOXICITY CRITERIA 
14.1  Purpose 
Adverse event data collection and reporting, which are required as part of every clinical trial, 
are done to ensure the safety of patients enrolled in the studies, as well as those who will enroll in 
future studies using similar agents. Adverse events are reported in a defined manner at scheduled and 
emergent times during a trial, based on occurrence and severity.   
14.2  Reporting Requirements 
 
 In this study a serious adverse event (SAE) includes death, life-threatening, hospitalization or 
prolongation of hospitalization, congenital anomaly/birth defects, and persistent and/or significant 
disability.   

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Any adverse event that is unexpected and related or possibly related to the study treatment or 
other research intervention will be reported.  Any adverse event that is unrelated to the research 
intervention does not have to be reported to the COMIRB.  
The principal investigator will, within 24 hours, or recognition of any grade 4, non-hematologic 
SAE that is likely due to radiation, vincristine, or carboplatin, contact the COMIRB.   
 
Death due to disease will be reported if the death occurs within 30 days of the study treatment. 
All deaths that are possibly related to the study treatment that occur more than 30 days after the 
treatment will be reported immediately. All other deaths that are due to disease (and therefore 
expected) and unrelated to the treatment, will be reported at continuing review. 
 
14.3 
 Toxicity Criteria 
Any patient experiencing a non-hematologic, irreversible grade 3 toxicity or grade 4 toxicity should 
not receive further Carboplatin.  The site, measure and grade for all toxicities (Grade 3 and 4) will be 
according to the NCI Common  Terminology Criteria v. 3.0 (CTCAE).  The CTCAE provides 
descriptive terminology and a grading scale for each adverse event listed. A copy of the CTCAE can 
be downloaded from the Cancer Therapy Evaluation Program (CTEP) home page 
(http://ctep.cancer.gov)  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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15.0  REFERENCES 
 
Alberts DS, Mason-Liddil N: Carboplatin in the treatment of ovarian cancer. Semin Oncol 16:19-26, 
1989 
 
Allen JC, Walker R, Luks E et al: Carboplatin and recurrent childhood brain tumors. J Clin Oncol 
5:459-463, 1987 
 
Allen J, Sittert S, Da Rosso R, Donahue B, Nirenberg A: Carboplatin as a radiopotentiating agent for 
newly diagnosed children with brainstem gliomas. Ann Neurol 38: 553; 1995. 
 
Ausili-Cefaro G, Marmiroli L, Nardone L and Salvi G: Prolonged continuous infusion of carboplatin 
and concomitant radiotherapy in advanced head and neck cancer. Am J Clin Oncol 18 (3): 273-276, 
1995 
 
Bartelink H, Kallman RF, Rapacchietta D, Hart A: Therapeutic enhancement in mice by clinically 
relevant dose and fractionation schedules of cis-diamminedichloroplatinum and irradiation. Radiother 
Oncol 6:61-74, 1986 
 
Boyett J, Zeltzer P, Finlay J et al: Progression-free survival and risk factors for primitive 
neuroectodermal tumors of the posterior fossa in children: report of the Childrens Cancer Group 
randomized trial. Proc ASCO 14: 147 (283), 1995. 
 
Cohen BH, Zeltzer PM, Boyett JM et al: Prognostic factors and treatment results for supratentorial 
primitive neuroectodermal tumors in children using radiation and chemotherapy: a Childrens Cancer 
Group randomized trial. J Clin Oncol 13: 1687-1696, 1995.  
 
Douple EB, Richmond RC: Platinum complexes as radiosensitizers of hypoxic mammalian cells. Br J 
Can 37: S3, pp98-102, 1978. 
 
Douple EB, Richmond RC, O'Hara JA, Coughlin CT: Carboplatin is a potentiator of radiation therapy. 
Can Treat Rev 12 S7:111-124, 1985 
 
Fu KK, Phillips TL: Biologic rationale of combined radiotherapy and chemotherapy. Hematol Oncol 
Clin North Am 5: 737- , 1991 
 
Gaynon PS, Ettinger LJ, Baum ES et al: Carboplatin in childhood brain tumors. Cancer 66:2465-2469, 
1990 
 
Goldwein JW, Radcliffe J, Johnson J et al: Updated results of a pilot study of low dose craniospinal 
irradiation plus chemotherapy for children under five with cerebellar primitive neuroectodermal 
tumors (medulloblastoma). Int J Radiat Oncol Biol Phys 34 (4): 899-904, 1996. 
 
Jakacki R, Burger P, Zhou T et al: Impact of anaplasia on outcome for metastatic medulloblastomas 
treated with carboplatin as a radiosensitizer during radiotherapy followed by adjuvant 
cyclophosphamide and vincristine: Preliminary results of COG 99701. Children’s Oncology Group.  
International Society of Pediatric Neuro-Oncology, Abstract presented. Japan, 2006.  
 

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Jenkin D, Goddard K, Armstrong D et al: Posterior fossa medulloblastoma in childhood: treatment 
results and a proposal for a new staging system. Int J Radiat Oncol Biol Phys 19:265-274, 1990. 
 
Jeremic B, Shibamoto Y, Acimovic L et al: Randomized trial of hyperfractionated radiation therapy 
with or without concurrent chemotherapy for stage III non-small-cell lung cancer. J Clin Oncol 13: 
452-458, 1995 
 
Jeremic B, Shibamoto Y, Acimovic L and Milisavljectiv S: Hyperfractionated radiation therapy with 
or without concurrent low-dose daily carboplatin/etoposide for Stage III nonsmall-cell lung  cancer: a 
randomized study. J Clin Oncol 14: 1065-1070, 1996 
 
Kleihues & Cavenee. World Health Organization Classification of Tumors: Tumours of the Nervous 
System. Lyon: IARC Press, 2000. 
 
Levin VA, Maor MH, Thall PF et al: Phase II study of accelerated fractionated radiation therapy with 
carboplatin followed by vincristine chemotherapy for the treatment of glioblastoma multiforme. Int J 
Radiat Oncol Biol Phys 33: 357-364, 1995. 
 
Mastrangelo R, Lasorella A, Riccardi R et al: Carboplatin in childhood medulloblastoma/PNET: 
Feasibility of an in-vivo sensitivity test in an "up-front" study. Med Ped Oncol 24:188-196, 1995 
 
Mulhern RK, Kepner JL, Thomas PR et al: Neuropsychologic functioning of survivors of childhood 
medulloblastoma randomized to receive conventional or reduced-dose craniospinal irradiation: a 
Pediatric Oncology Group study. J Clin Oncol 16 (5): 1723-8, 1998. 
 
Packer RJ,Gajjar A, Vezina G, Rorke-Adams L, Burger PC, Robertson PL, Bayer L, LaFond D, 
Donahue BR, Marymont MH, Muraszko K, Langston J, Sposto R: Phase III Study of Craniospinal 
Radiation Therapy Followed by Adjuvant Chemotherapy for Newly Diagnosed Average-Risk 
Medulloblastoma.  J Clin Oncol 24 (25): 4202-4208, 2006. 
 
Packer RJ, Sutton LN, Atkins TE et al: A Prospective study of cognitive function in children receiving 
whole-brain radiotherapy and chemotherapy: 2-year results.  J Neurosurg 70 (5): 707-713, 1989. 
 
Packer RJ, Sutton LN, Elterman R et al: Outcome for children with medulloblastoma treated 
with radiation and cisplatin, CCNU and vincristine chemotherapy. J Neurosurg 81: 690- 698,1994. 
 
Radcliffe J, Packer RJ, Atkins TE et al: Three- and four-year outcome in children with noncortical 
brain tumors treated with whole-brain radiotherapy. Ann Neurol 32 (4): 551-4, 1992. 
 
Ribi K, Relly C, Landolt MA et al: Outcome of medulloblastoma in children: Long-term complications 
and quality of life. Neuropediatrics 36: 357-365, 2005. 
Schaake-Koning C, van den Bogaert W, Dalesio O et al: Effects of concomitant cisplatin and 
radiotherapy on inoperable non-small cell lung cancer. New Engl J Med 326:524-30,1992 
27. 
 
Schwachoffer JHM, Crooijmans RPM, Hoogenhout J, Kal HB, Theeuwes AGM: Effectiveness in 
inhibition of recovery of cell survival by cisplatin and carboplatin: Influence of treatment sequence. Int 
J Radiat Oncol Biol Phys 20 (6):1235-1241, 1991 

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Skov K, MacPhail S: Interaction of platinum drugs with clinically relevant x-ray doses in mammalian 
cells: a comparison of cisplatin, carboplatin, iproplatin and tetraplatin. Int J Radiat Oncol Biol Phys 20: 
221-225, 1991 
 
Steel GG. Terminology in the description of drug-radiation interactions. Int J Radiat Oncol Biol Phys 
5:1145-1150, 1979. 
 
Steel G: The search for therapeutic gain in the combination of radiotherapy and chemotherapy. Radiat 
Oncol 11:31-54, 1988 
 
Volling P, Staar S, Achterrath W and Muller RP: Phase I/II study of simultaneous carboplatin and 
radiotherapy in unresectable squamous cell carcinoma of the head and neck. Sem Oncol 19:66-71,1992 
 
Wilkins DE, Heller DP and Raaphorst GP: Inhibition of potentially lethal damage recovery by cisplatin 
in a brain tumor cell line. Anticancer Research 13:2137-2142, 1993

 
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Appendix 1: Neurological Exam Guidelines 
 
(Within normal limits) 
 
Head Tilt: (Absent) 
Visual Acuity: (Intact) 
EOMI: (PERRLA) 
Cranial Nerves VII - XII: (Intact) 
Extremities: (Power, sensation, tone equal bilaterally) 
Gait:  (WNL) 
Dysmetria: (No) 
Speech:  (Clear) 
Memory: (Intact) 
Sensory:  (Normal) 

 
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Appendix 2 
 
Karnofsky/Lansky Performance Scales 
 
Karnofsky 
(Age at least16 years)  
Lansky 
(Age less than 16 years) 
Score 
Description 
Score 
Description 
100 
Normal, no complaints, 
no evidence of disease 
100 
Fully active, normal. 
90 
Able to carry on normal 
activity, minor signs or 
symptoms of disease. 
90 
Minor restrictions in 
physically strenuous 
activity. 
80 
Normal activity with 
effort; some signs or 
symptoms of disease. 
80 
Active, but tires more 
quickly 
70 
Cares for self, unable to 
carry on normal activity 
or do active work. 
70 
Both greater restriction of 
and less time spent in 
play activity. 
60 
Required occasional 
assistance, but is able to 
care for most of his/her 
needs. 
60 
Up and around, but 
minimal active play; 
keeps busy with quieter 
activities. 
50 
Requires considerable 
assistance and frequent 
medical care. 
50 
Gets dressed, but lies 
around much of the day; 
no active play, able to 
participate in all quiet play 
and activities. 
40 
Disabled, requires 
special care and 
assistance. 
40 
Mostly in bed; 
participates in quiet 
activities. 
30 
Severely disabled, 
hospitalization indicated.  
Death not imminent. 
30 
In bed; needs assistance 
even for quiet play. 
20 
Very sick, hospitalization 
indicated.  Death not 
imminent. 
20 
Often sleeping; play 
entirely limited to very 
passive activities. 
10 
Moribund, fatal 
processes progressing 
rapidly. 
10 
No play; does not get out 
of bed. 
 
 
 

 
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Appendix 3 
 
 
 
NEUROPSYCHOLOGICAL TESTING 
 
Baseline assessment (to be completed by 3-6 months post radiation 
 
age appropriate Wechsler Test  
Wide Range Assessment Test-3rd edition 
Vineland Adaptive Behavior Scales – Interview Edition 
Hollingshead 4 factor Index of Social Position 
Achenbach Child Behavior Checklist  
Neurologic Status Questionnaire 
 
 
 
2 years post- study entrance and 5 years post-study entrance 
 
age appropriate Wechsler Test  
Wide Range Assessment Test-3rd edition 
Vineland Adaptive Behavior Scales – Interview Edition 
Hollingshead 4 factor Index of Social Position 
Achenbach Child Behavior Checklist 
Woodcock Johnson –Revised; Passage Comprehension 
Beery Test of Visual Motor Integration 
Neurologic Status Questionnaire