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RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Giving combination chemotherapy before surgery may shrink the tumor so it can be removed during surgery. Giving more chemotherapy after surgery may kill any remaining tumor cells. It is not yet known which chemotherapy regimen after surgery is most effective in treating Wilm's tumor.
- Determine the response rate in children with Wilms' tumor treated with pre-operative chemotherapy.
- Compare the response rate in children with intermediate-risk stage II or III Wilms' tumor treated with or without doxorubicin after surgery.
- Determine the prognostic significance of histological subtypes in these patients after pre-operative chemotherapy.
- Determine whether reduced treatment minimizes acute and late toxicity without jeopardizing event-free and overall survival in patients with focal anaplasia or intermediate-risk stage I Wilms' tumor.
- Determine the prognostic significance of tumor volume and specimen weight after pre-operative chemotherapy and its relation to histological subtype in these patients.
- Determine the effect of single-dose dactinomycin as pre-operative chemotherapy in these patients.
- Correlate allele loss at 16q, 1p, and other chromosomal regions with relapse-free and overall survival of patients treated with these regimens.
- Correlate allele losses with clinical risk factors (e.g., histological appearance and tumor volume) after pre-operative chemotherapy in these patients.
- Determine laboratory indicators of myocardial damage in patients treated with these regimens.
- Determine the prognostic significance of the percentage of necrosis after pre-operative chemotherapy, in terms of type and amount of residual viable tumor, in these patients.
OUTLINE: This is a partially randomized, multicenter study. Patients are stratified according to country and participating center. Patients with intermediate-risk stage II or III disease are further stratified according to histology (blastemal vs epithelial vs stromal vs mixed).
Patients with localized disease receive neoadjuvant therapy comprising vincristine IV on days 1, 8, 15, and 22 and dactinomycin IV on days 1 and 15.
Patients undergo surgery during weeks 5 or 6.
Patients with low-risk stage I disease receive no further therapy.
Adjuvant chemotherapy begins after surgery and within 21 days of last dose of neoadjuvant chemotherapy.
Patients with intermediate-risk stage I disease receive vincristine IV on days 1, 8, 15, and 22 and dactinomycin IV on day 7.
Patients with intermediate-risk stage II or III disease are randomized to 1 of 2 treatment arms.
- Arm I: Patients receive vincristine IV weekly for 8 weeks and then on days 1 and 7 of weeks 11, 14, 17, 20, 23, and 26. Patients also receive dactinomycin IV weekly on weeks 2, 5, 8, 11, 14, 17, 20, 23, and 26 and doxorubicin IV over 4-6 hours weekly on weeks 2, 8, 14, 20, and 26.
- Arm II: Patients receive vincristine and dactinomycin as in arm I. Patients with high-risk stage I disease receive chemotherapy as in arm I. Patients with low-risk stage II disease receive chemotherapy as in arm II.
Patients with high-risk stage II or III disease receive cyclophosphamide IV over 1 hour on days 1-3 and doxorubicin IV over 4-6 hours on day 1 on weeks 1, 7, 13, 19, 25, and 31. Patients also receive etoposide IV over 4 hours and carboplatin IV over 1 hour on days 1-3 on weeks 4, 10, 16, 22, 28, and 34.
Patients with intermediate-risk stage III or high-risk stage II or III disease also undergo radiotherapy for approximately 3 weeks during chemotherapy.
Patients with metastatic disease receive neoadjuvant chemotherapy comprising vincristine IV on day 1 of weeks 1-6, dactinomycin IV on day 1 of weeks 1, 3, and 5, and doxorubicin IV over 4-6 hours on day 1 of weeks 1 and 5.
Patients undergo surgery during week 7.
Within 2 weeks of surgery patients receive 1 of the following adjuvant chemotherapy regimens:
- Regimen A (no metastases or completely resected): Patients receive vincristine IV weekly for 8 weeks and then on weeks 11, 12, 14, 15, 17, 18, 20, 21, 23, 24, 26, and 27. Patients also receive dactinomycin IV on day 1 of weeks 2, 5, 8, 11, 14, 17, 20, 23, and 26 and doxorubicin IV over 4-6 hours on weeks 2, 8, 14, and 20. Some patients also undergo radiotherapy concurrently with chemotherapy for approximately 3 weeks.
- Regimen B (multiple inoperable metastases, incomplete resection, or high-risk primary disease): Patients receive etoposide IV over 4 hours and carboplatin IV over 1 hour on days 1-3 of weeks 4, 10, 13, 16, 22, 25, 28, and 34. Patients also receive cyclophosphamide IV over 1 hour on days 1-3 and doxorubicin IV over 4-6 hours on day 1 of weeks 1, 7, 19, and 31. Some patients also undergo radiotherapy concurrently with chemotherapy for approximately 3 weeks.
Patients are followed every 2-3 months for 2 years, every 3-6 months for 1-2 years, and then every 6-12 months thereafter.
Peer Reviewed and Funded or Endorsed by Cancer Research UK
PROJECTED ACCRUAL: A total of 350 patients (174 per treatment arm) will be accrued for the randomized portion of this study within 7 years.
Allocation: Randomized, Control: Active Control, Primary Purpose: Treatment
dactinomycin, carboplatin, cyclophosphamide, doxorubicin hydrochloride, etoposide, vincristine sulfate, adjuvant therapy, conventional surgery, neoadjuvant therapy, radiation therapy
Institut Gustave Roussy
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-07-23T21:52:37-0400
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