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RATIONALE: Drugs used in chemotherapy, such as cisplatin, doxorubicin, and methotrexate, work in different ways to stop tumor cells from dividing so they stop growing or die. Combining pamidronate with chemotherapy may prevent bone metastases and reduce the chance of bone replacement problems by strengthening bones in patients who are undergoing surgery for osteosarcoma.
PURPOSE: Phase II trial to study the effectiveness of combining neoadjuvant and adjuvant pamidronate with induction and maintenance chemotherapy in treating patients who have newly diagnosed osteosarcoma.
- Determine the safety and feasibility of pamidronate with standard induction and maintenance chemotherapy in patients with newly diagnosed high-grade osteosarcoma.
- Determine the frequency of favorable tumor necrosis produced in patients treated with this regimen.
- Determine the event-free survival of patients without metastatic disease at presentation treated with this regimen.
- Determine the prosthesis failure-free survival of patients treated with this regimen and who ultimately undergo limb preservation surgery with insertion of an endoprosthesis.
OUTLINE: Patients are stratified according to extent of disease (localized vs metastatic).
- Induction therapy: Patients receive standard chemotherapy comprising cisplatin IV over 4 hours and doxorubicin IV over 15-30 minutes on weeks 0 and 5 and high-dose methotrexate IV over 4 hours on weeks 3, 4, 8, and 9. Patients also receive pamidronate IV over 2-4 hours beginning approximately 3 days after initiation of chemotherapy on week 0 and repeating once every 4 weeks. Treatment continues in the absence of disease progression or unacceptable toxicity.
- Surgery*: Patients undergo surgical resection of primary tumor on week 10 and then proceed to maintenance therapy. Patients with metastatic disease undergo further surgery of metastatic sites after recovery from definitive resection of the primary tumor before proceeding to maintenance therapy.
NOTE: *Patients who have undergone definitive surgical resection before study entry may proceed to maintenance therapy or, if appropriate, surgical resection of metastatic disease
- Maintenance therapy: Patients receive standard chemotherapy comprising cisplatin IV over 4 hours on weeks 0 and 5; doxorubicin IV over 15-30 minutes on weeks 0, 5, 10, and 15; and high-dose methotrexate IV over 4 hours on weeks 3, 4, 8, 9, 13, 14, 18, and 19. Patients also receive pamidronate as in induction therapy for up to 1 year. Treatment continues in the absence of disease progression or unacceptable toxicity.
Patients are followed monthly for 1 year.
PROJECTED ACCRUAL: A total of 75 patients (50 with localized disease; 25 with metastatic disease) will be accrued for this study within 3-4 years.
Masking: Open Label, Primary Purpose: Treatment
cisplatin, doxorubicin hydrochloride, methotrexate, pamidronate disodium, adjuvant therapy, conventional surgery, neoadjuvant therapy
Memorial Sloan-Kettering Cancer Center
National Cancer Institute (NCI)
Published on BioPortfolio: 2014-07-23T21:52:13-0400
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