The efficacy of combined androgen blockade therapy consisting of flutamide, a nonsteroidal antiandrogen, plus an LH-RH agonist (F-CAB) was investigated in Japanese patients with untreated advanced prostate cancer (clinical stage D).
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The primary endpoint was overall survival (OS), while the secondary endpoints were disease-specific survival (DSS), progression- free survival (PFS), reduction of prostate specific antigen (PSA), anti-tumor effects, quality of life (QOL), and adverse drug reactions (ADRs). As of the median observation period of 1,293.5 days, the F-CAB significantly prolonged DSS and PFS relative to LH-RH monotherapy (log rank test: p=0.0343 and 0.0017, respectively). The results of this study indicate the potential of F-CAB as a useful treatment for untreated advanced prostate cancer. Although additional study is considered necessary to determine the daily dosage of flutamide, the anti-tumor effects obtained from this study indicated that 375 mg/day is appropriate as a daily dosage, and 250 mg/day can also be considered when concern exists regarding the occurrence of complications or the development of ADRs, including liver function disorders.
Kanetake H, Usami M, Ohashi Y, Ijima T, Akaza H. Are you the author?
Dept. of Nephro-Urology, Nagasaki University Graduate School of Biomedical Sciences.
Reference: Gan To Kagaku Ryoho. 2014 Dec;41(13):2591-7.