Journal of Clinical Oncology, Vol 15, 2546-2552, Copyright © 1997 by American Society of Clinical Oncology

ARTICLES

High-dose carboplatin, etoposide, and cyclophosphamide with autologous bone marrow transplantation in first-line therapy for patients with poor-risk germ cell tumors

RJ Motzer, M Mazumdar, DF Bajorin, GJ Bosl, P Lyn and V Vlamis
Department of Medicine, Memorial Sloan-Kettering Cancer Center, Cornell University Medical College, New York, NY, USA.

PURPOSE: A treatment program that included high-dose carboplatin, etoposide, and cyclophosphamide (CEC) followed by autologous bone marrow transplantation (AuBMT) was investigated as first-line therapy in patients with poor-risk germ cell tumors (GCTs). PATIENTS AND METHODS: Previously untreated GCT patients with poor-risk features were treated with etoposide, ifosfamide, and cisplatin (VIP) with or without high-dose CEC plus AuBMT. Patients qualified for a change to high-dose CEC if a prolonged clearance of elevated serum tumor markers was observed after two cycles of the cisplatin-containing regimen. RESULTS: Sixteen patients were treated with VIP alone and 14 with VIP and high- dose CEC. Seventeen patients (57%) achieved a complete response. Twenty are alive (67%) and 15 (50%) are free of disease at a median follow-up time of 30 months. For 23 cycles of high-dose CEC, the median time from AuBMT to a granulocyte count > or = 0.5/microL was 11 days (range, 0 to 14) and to a platelet count 50,000/microL, 19 days (range, 14 to 34). The survival of 58 patients treated in two of our center's programs that incorporated high-dose chemotherapy (high-dose carboplatin plus etoposide [CE] and CEC) was compared with our prior experience with conventional-dose cisplatin chemotherapy alone in poor-risk GCT. Patients treated with marker-dependent, early-intervention high-dose chemotherapy experienced longer survival (P = .001). CONCLUSION: In this setting, high-dose CEC was well tolerated, cumulative toxicity was lacking, and the recovery of blood counts after AuBMT was rapid. A randomized trial has been initiated to investigate further the role of high-dose CEC in first-line therapy for patients with poor-risk GCT.

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