Medivation Announces Positive New Efficacy Data From Phase 1-2 Trial of MDV3100 in Advanced Prostate Cance...( -- Findings Presented at American Soc...),Health

-- Findings Presented at American Society of Clinical Oncology 2009 Annual Meeting and Included in Best of ASCO(R) Educational Program --

SAN FRANCISCO, June 2 /PRNewswire-FirstCall/ -- Medivation, Inc. (Nasdaq: MDVN) today announced the presentation of new clinical results from a Phase 1-2 trial evaluating MDV3100, a next-generation androgen receptor antagonist, in castration-resistant prostate cancer (CRPC) patients. The new findings, which include data from all 140 enrolled patients, confirm previously reported results that MDV3100 consistently demonstrated anti-tumor activity in both chemotherapy-naive and post-chemotherapy CRPC patients across dose levels and endpoints, as evaluated by reductions in prostate specific antigen (PSA) levels, radiographic findings and circulating tumor cell (CTC) counts.

New findings include the median time to PSA progression, which was 6.1 months for post-chemotherapy patients, with the median time not yet reached for chemotherapy-naive patients. In addition, the median time to radiographic progression was 6.6 months for post-chemotherapy patients, with the median time not yet reached for chemotherapy-naive patients.

"These new clinical data in the post-chemotherapy setting are encouraging because these patients have a poor prognosis, surviving on average a year or less -- with no approved treatment options," said Howard Scher, M.D., principal investigator of the trial and chief of the Genitourinary Oncology Service and the D. Wayne Calloway Chair in Urologic Oncology at Memorial Sloan-Kettering Cancer Center in New York. "These findings suggest that MDV3100, with its unique mechanism of action, provides beneficial clinical effects in contrast to those achieved with first-generation androgen receptor antagonists."

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