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  • Title: Drug dose delivery and treatment outcome relationship in standard bleomycin, etoposide and cisplatin combination chemotherapy in nonseminomatous germ cell tumor patients.
    Author: Gutierrez-Delgado F, Titov DA, Tjulandin SA, Garin AM.
    Journal: Neoplasma; 1999; 46(3):190-5. PubMed ID: 10613596.
    Abstract:
    This study retrospectively evaluated the influence of drug dose delivery components (DDDC) of bleomycin, etoposide and cisplatin chemotherapy for metastatic nonseminomatous germ cell tumors on treatment outcome (NSGCT). Between December 1987 and January 1995, 75 NSGCT patients were treated with a median of 4 cycles (range 3-8) of cisplatin 120 mg/m2 on day 1, etoposide 100 mg/m2 on days 1 through 5 and bleomycin 30 U on days 1, 3, and 5 every 3 weeks. DDDC, such as cumulative dose, cumulative dose in mg/m2, dose intensity (DI), relative dose intensity (RDI), dose intensity products, and relative dose intensity products by drug, were calculated and tested as possible predictors of treatment outcome in patients classified according to Indiana University (IU), and International Germ Cell Cancer Cooperative Group (IGCCCG) classifications. Overall complete response (CR) rate was 64%, and 3-year progression-free survival (PFS) was 59%. By IU classification there were statistical differences in CR and survival between moderate (89-81%) and advanced disease (42-40%) (p < 0.005), while for patients classified according to IGCCCG criteria, statistical differences in CR and PFS there were not registered. DI (mg/m2/week) and RDI values for the entire group were: cisplatin 33-0.82; etoposide 133-0.80 and bleomycin 11-0.37. We did not observe a statistically significant difference in drug dose delivery components for treatment outcome between patients who achieved a CR and incomplete response when analyzed by either extent of disease or whole group. Extent of disease was the most important predictor of treatment outcome.
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