European urology
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Randomized Controlled Trial Multicenter Study Clinical Trial
A controlled trial of Casodex (bicalutamide) vs. flutamide, each in combination with luteinising hormone-releasing hormone analogue therapy in patients with advanced prostate cancer. Casodex Combination Study Group.
Between January 1992 and September 1993, 813 patients with stage D2 prostate cancer were enrolled in a multicentre, double-blind (for antiandrogen therapy) trial and randomised to antiandrogen therapy with Casodex (bicalutamide, 50 mg once daily) or flutamide (250 mg three times daily) and to luteinising hormone-releasing hormone (LHRH) analogue therapy with Zoladex (goserelin, 3.6 mg every 28 days) or leuprolide (7.5 mg every 28 days). Time to treatment failure was the primary efficacy endpoint. At a median follow-up time of 49 weeks, there was a significant (p = 0.005) difference between groups in time to treatment failure in favour of Casodex plus LHRH analogue. ⋯ Diarrhoea led to withdrawal from therapy for 2 patients in the Casodex plus LHRH analogue group, compared with 25 patients in the flutamide plus LHRH analogue group. In conclusion, Casodex plus LHRH analogue is well tolerated and effective with an improvement in time to treatment failure over flutamide plus LHRH analogue. Survival was not dissimilar between the 2 treatment groups.