Combination Chemotherapy Plus Peripheral Stem Cell Transplantation in Treating Children With Newly Diagnosed Neuroblastoma

Combination Chemotherapy Plus Peripheral Stem Cell Transplantation in Treating Children With Newly Diagnosed Neuroblastoma

A Pilot Study Of Tandem High Dose Chemotherapy With Stem Cell Rescue Following Induction Therapy In Children With High Risk Neuroblastoma

RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining more than one drug may kill more tumor cells. Peripheral stem cell transplantation may allow the doctor to give higher doses of chemotherapy drugs and kill more tumor cells. PURPOSE: Phase II trial to study the effectiveness of combination chemotherapy followed by peripheral stem cell transplantation in treating children who have newly diagnosed neuroblastoma.

OBJECTIVES: Determine the toxicity and feasibility of high-dose thiotepa and cyclophosphamide with autologous peripheral blood stem cell (PBSC) transplantation and sargramostim (GM-CSF) followed by high-dose carboplatin, etoposide, and melphalan with second PBSC transplantation, GM-CSF, and isotretinoin after induction in children with newly diagnosed high-risk neuroblastoma. Determine the role of the meta-iodobenzylguanidine (MIBG) scan in assessing response to tandem transplantation and minimal residual disease therapy in these patients. Determine the feasibility of quantitative polymerase chain reaction for neuroblastoma-specific ribonucleic acids at specific stages of treatment as a prognostic indicator of outcome in these patients. Determine the immune recovery by quantitation of lymphocyte subsets in these patients and limited functional analysis after completion of this regimen. OUTLINE: This is a multicenter study. Patients are stratified according to peripheral blood stem cell (PBSC) selection (selected PBSCs vs unselected PBSCs). (Selected PBSC stratum closed to accrual as of 7/17/02.) Induction/harvest: Course 1: Patients receive etoposide (VP-16) IV over 1 hour on days 2-4, cisplatin IV over 6 hours (beginning after VP-16 infusion) on days 1-5, and filgrastim (G-CSF) subcutaneously (SC) beginning on day 6 and continuing until blood counts recover. Course 2: Patients receive vincristine IV and doxorubicin IV over 15 minutes on day 1, cyclophosphamide IV over 6 hours on days 1 and 2, and sargramostim (GM-CSF) SC beginning on day 3 and continuing until PBSC are harvested. Beginning after completion of course 2 and when blood counts recover, autologous PBSC are harvested. Course 3: Patients receive VP-16 IV over 1 hour and ifosfamide IV over 1 hour on days 1-5 and G-CSF SC beginning on day 6 and continuing until blood counts recover. Course 4: Patients receive VP-16 IV over 1 hour on days 1-3, carboplatin IV over 2 hours (beginning after VP-16 infusion) on days 1 and 2, and G-CSF SC beginning on day 4 and continuing until blood counts recover. Course 5: Patients receive treatment as in course 2 but supported by G-CSF. Courses 1-5 each last 3-4 weeks. Patients undergo resection of the primary tumor after course 4 or 5 unless primary resection was completed at diagnosis (which is not recommended), no primary site is found, or the primary site is unresectable. Patients complete courses 1-5 and then proceed to the first conditioning/PBSC transplantation (PBSCT) in the absence of disease progression or unacceptable toxicity. First conditioning/PBSCT: Patients receive high-dose thiotepa IV on days -7 to -5 and cyclophosphamide IV over 1 hour on days -5 to -2. CD34+ PBSC are reinfused on day 0. GM-CSF is administered SC beginning on day 5 and continuing until blood counts recover. If blood counts have not recovered by day 28, unselected PBSC are reinfused. In the absence of disease progression or unacceptable toxicity, patients proceed to the second conditioning/PBSCT. Second conditioning/PBSCT: Beginning within 6-8 weeks after initiating the first conditioning, patients receive high-dose carboplatin IV continuously and etoposide phosphate IV continuously on days -7 to -4 and melphalan IV on days -7 to -5. PBSC and GM-CSF are administered as in the first PBSCT. Beginning no earlier than day 28 after the second PBSCT, patients undergo local radiotherapy to the primary site and sites that are positive by meta-iodobenzylguanidine scan after induction twice a day for 7 days (or once a day for 12 days if twice daily dosing is not possible). Beginning on day 90 after the second PBSCT, patients receive oral isotretinoin twice a day for 2 weeks. Treatment repeats every 4 weeks for 6 courses in the absence of disease progression or unacceptable toxicity. Patients are followed every 3 months for 1 year, every 6 months for 1 year, and then annually thereafter. PROJECTED ACCRUAL: A total of 31-39 patients will be accrued for this study within 22 months.

regional neuroblastoma, disseminated neuroblastoma, localized unresectable neuroblastoma, stage 4S neuroblastoma

The endpoint used for early stopping rule 9.51 will be transplant-related mortality (TRM). A TRM is defined as any death occurring within 30 days after either the first or second HDC/SCR. The acceptable TRM rate is 7.5%. This rate is based on TRM rates previously observed in the prior CCG study 594, CCG study 3891, and POG study 9640 of 7%, 6%, and 0%, respectively.

The endpoint to be used in assessing early stopping rule 9.52 will be the incidence of symptomatic CMV, disseminated adenovirus infection, or EBV-LPD. Patients with positive CMV antigenemia or CMV urine culture only (without symptoms of CMV infection), or patients who have a positive culture for adenovirus without evidence of dissemination, or patients with a positive EBV PCR who do not exhibit significant clinical signs (such as adenopathy) or symptoms will not trigger the stopping rule.

Assessment of feasibility and toxicity at the end of the study is time to event. Time to event is defined as the time from registration on the study until the first of the following events occurs: relapse, progression, secondary malignancy, or death, including toxic death. If none of those events occurs, then the time of last contact with the patient is used. Time to event will be used to calculate the one-year Event-free Survival (EFS) rate.

DISEASE CHARACTERISTICS: Newly diagnosed high-risk neuroblastoma Histologically proven AND/OR Bone marrow specimen showing clumps of tumor cells accompanied by elevated urinary catecholamines Age 1-30: Must meet one of the following INSS staging criteria: Stage IV regardless of biologic factors Stage IIa/IIb with MYCN oncogene amplification (greater than 10) and unfavorable pathology Stage III with MYCN oncogene amplification (greater than 10) or unfavorable pathology Initially stage I, II, or IVS, that has progressed without interval chemotherapy Under age 1: INSS stage III, IV, or IVS with MYCN amplification (greater than 10) Must enter neuroblastoma biology study COG-ANBL00B1 within 2 weeks of diagnosis and before entry on this study PATIENT CHARACTERISTICS: Age: 30 and under at original diagnosis Performance status: Not specified Life expectancy: Not specified Hematopoietic: Not specified Hepatic: Not specified Renal: Not specified Other: Not pregnant or nursing Fertile patients must use effective contraception PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: See Disease Characteristics No more than 1 prior course of chemotherapy on the intergroup low- or intermediate-risk neuroblastoma studies prior to determination of MYCN status and Shimada histology Endocrine therapy: Not specified Radiotherapy: Prior emergent radiotherapy to sites of function- or life-threatening neuroblastoma allowed Surgery: Not specified Other: No other prior systemic therapy for neuroblastoma

AFLAC Cancer Center and Blood Disorders Service of Children's Healthcare of Atlanta - Scottish RiteCampus

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