Journal
ANTI-CANCER DRUGS
Volume 15, Issue 5, Pages 495-498Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/01.cad.0000127145.50172.51
Keywords
dacarbazine; fotemustine; gender; gender-specific response; pharmacokinetics
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Twelve patients (six female and six male) with histologically proven glioblastoma multiforme were investigated during the administration of the first cycle of dacarbazine (D; 200 mg/m(2)) and fotemustine (F; 100 mg/m(2)). In total, 18 blood samples were collected for pharmacokinetic analysis (maximum plasma concentration, area under the concentration-time curve and total clearance) of D and F at 14 time points during therapy. D, its metabolite 5-aminoimidazole-4-carboxamide and F were evaluated by reversed-phase HPLC. For statistical calculations, groups were compared by the non-parametric Wilcoxon test. p < 0.05 was considered statistically significant. No significant gender-dependent differences were observed in the pharmacokinetics of D and F. An additional response re-evaluation of 100 patients (50 female and 50 male) with glioblastoma multiforme, treated at our institution with D and F, gave no hint of any gender-dependent different response rates. We conclude that there is no evidence, neither from pharmacokinetic nor from our clinical data, to consider different dosages of D and F in female and male patients with glioblastoma multiforme. (C) 2004 Lippincott Williams Wilkins.
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