Posted on February 2nd, 2012 by
Among men with metastatic, hormone-refractory prostate cancer, treatment with the investigational drug MDV3100 delayed cancer progression and improved overall survival. These results will be presented at the 2012 Genitourinary Cancers Symposium.
Prostate cancer is a hormonally sensitive disease that can be controlled for long periods with androgen deprivation therapy (ADT). When prostate cancer stops responding to this treatment, it is referred to as hormone-refractory prostate cancer. Advances have been made in the treatment of hormone-refractory cancer, but challenges remain and new drugs continue to be developed.
MDV3100 is an investigational drug with a new approach to hormonal therapy. The drug interferes with the ability of male hormones to bind to their receptors within a cell, and also reduces the ability of the receptors to enter the nucleus and stimulate cell growth.
To evaluate the safety and efficacy of MDV3100 in the treatment hormone-refractory prostate cancer, researchers conducted a Phase III clinical trial known as AFFIRM. The study enrolled 1,199 men with metastatic, hormone-refractory prostate cancer. All of the men had experienced a worsening of their cancer in spite of previous treatment with hormonal therapy and the chemotherapy drug Taxotere® (docetaxel). Study participants were treated with either MDV3100 or a placebo (sugar pill).
This study suggests that MDV3100 improves outcomes among men with metastatic, hormone-refractory prostate cancer. MDV3100 is also being evaluated for the treatment of earlier stages of prostate cancer.
Reference: Scher HI, Fizazi K, Saad F et al. Effect of MDV3100, an androgen receptor signaling inhibitor (ARSI), on overall survival in patients with prostate cancer postdocetaxel: Results from the phase III AFFIRM study. Presented at the 2012 Genitourinary Cancers Symposium. February 2-4, 2012.San Francisco,CA. Abstract LBA1.
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