“Enzalutamide (Xtandi) demonstrated early signs of efficacy in patients with androgen receptor (AR)-positive triple-negative breast cancer (TNBC), according to findings from the phase II MDV3100-11 study published in the Journal of Clinical Oncology.
“A total of 118 patients were enrolled in the single-arm, 2-stage trial, and 78 were evaluable for response. At 16 weeks, the clinical benefit rate (CBR) was 25% (95% CI, 17-33) in the intent-to-treat (ITT) population and 33% (95% CI, 23-45) in the evaluable subgroup. The median progression-free survival (PFS) was 2.9 months (95% CI, 1.9-3.7) in the ITT population and 3.3 months (95% CI, 1.9-4.1) in the evaluable subgroup. Median overall survival (OS) was 12.7 months (95% CI, 8.5 – not yet reached) in the ITT population and 17.6 months (95% CI, 11.6 – not yet reached) in the evaluable subgroup.”
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