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  • Title: Phase I/II study of sequential dose-intensified ifosfamide, cisplatin, and etoposide plus paclitaxel as induction chemotherapy for poor prognosis germ cell tumors by the German Testicular Cancer Study Group.
    Author: Hartmann JT, Gauler T, Metzner B, Gerl A, Casper J, Rick O, Horger M, Schleicher J, Derigs G, Mayer-Steinacker R, Beyer J, Kuczyk MA, Bokemeyer C, German Testicular Cancer Study Group.
    Journal: J Clin Oncol; 2007 Dec 20; 25(36):5742-7. PubMed ID: 18089869.
    Abstract:
    PURPOSE: To evaluate the feasibility and the toxicity of sequential, dose-intensified chemotherapy combined with paclitaxel plus peripheral blood-derived hematopoietic stem-cell support (PBSC) for patients with untreated metastatic germ cell tumors (GCTs) who have poor International Germ Cell Consensus Cancer Group prognostic features. PATIENTS AND METHODS: Paclitaxel was added to high-dose (HD) etoposide, ifosfamide, and cisplatin (VIP; etoposide 1,500 mg/m2, ifosfamide 10,000 mg/m2, and cisplatin 100 mg/m2; cumulative dose; days -6 through -2 per cycle) at three dose levels (135, 175, and 225 mg/m2) applied on day -6. Cycles were supported by PBSC and granulocyte colony-stimulating factor. One cycle of standard VIP was administered before start of HD-VIP plus paclitaxel cycles to collect autologous PBSC. RESULTS: Fifty-two of 53 patients receiving 152 cycles were assessable. As expected, myelosuppression was the major adverse effect. Median durations of leukocytes less than 1,000/microL and thrombocytes less than 25,000/microL were 6 and 4 days, respectively, independently of the dose of paclitaxel applied. WHO grade 2 neurotoxicity and grade 3 encephalopathy were observed in 5% of patients each. Other main adverse effects observed were stomatitis, diarrhea, and obstipation. Seventy-nine percent of patients achieved a favorable response to chemotherapy plus secondary surgery. After a median follow-up time of 41 months in surviving patients, the calculated 2- and 5-year survival rates were 77.6% (95% CI, 65.4% to 89.9%) and 75.2% (95% CI, 62.5% to 87.8%), respectively. CONCLUSION: Dose-intensive, sequential HD-VIP plus paclitaxel up to a dose of 225 mg/m2 in patients with poor prognosis GCT is a feasible approach. The regimen warrants investigation for its therapeutic potential in an expanded cohort of poor prognosis GCT patients.
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