Medivation and Pfizer Announce Results from Phase 3 Concert Trial of Dimebon

PfizerMedivation, Inc. (NASDAQ: MDVN) and Pfizer Inc. (NYSE: PFE) today announced results from the CONCERT trial, which is a Phase 3 trial that evaluated dimebon (latrepirdine) when added to ongoing treatment with donepezil HCL tablets in patients with mild-to-moderate Alzheimer's disease. Dimebon did not achieve statistically significant results for either of the two co-primary endpoints, the Alzheimer's Disease Assessment Scale - cognitive subscale (ADAS-cog), which measures cognitive ability, or the Alzheimer's Disease Cooperative Study - Activities of Daily Living (ADCS-ADL), which measures self care and daily function.

"We are disappointed in the CONCERT results and the implications for Alzheimer’s disease patients and their caregivers," said David Hung, M.D., president and CEO of Medivation. "I would like to extend my sincere thanks to the patients, their physicians and study teams involved in this trial."

Dimebon was generally well tolerated in the study. A full analysis of the results from CONCERT will be conducted and submitted for presentation at an upcoming scientific congress.

Medivation and Pfizer will discontinue development of dimebon for all indications and will terminate the ongoing open label extension study in Alzheimer's disease. The companies also announce that they will terminate their collaboration to co-develop and market dimebon pursuant to the terms of their Collaboration Agreement.

"We recognize Alzheimer's is a very complex disease," said Steven J. Romano, M.D., senior vice president, head, Medicines Development Group, Global Primary Care Business Unit, Pfizer Inc. "Despite this disappointing result, Pfizer remains committed to advancing the science of Alzheimer's disease, with the ultimate goal of delivering innovative and meaningful new treatment options to patients."

The Phase 3 CONCERT trial was a 12-month global randomized, double-blind, placebo-controlled trial that enrolled 1,003 patients with Alzheimer's disease. Patients on a stable dose of donepezil for at least four months were randomized to one of three treatment groups: dimebon 20 mg three times per day, dimebon 5 mg three times per day or placebo.

About Medivation
Medivation, Inc. is a biopharmaceutical company focused on the rapid development of novel small molecule drugs to treat serious diseases for which there are limited treatment options. Medivation aims to transform the treatment of these diseases and offer hope to critically ill patients and their caregivers. Together with its corporate partner Astellas, Medivation currently has its investigational drug MDV3100 in Phase 3 development to treat advanced prostate cancer.

Pfizer Inc.: Working together for a healthier world™
At Pfizer, we apply science and our global resources to improve health and well-being at every stage of life. We strive to set the standard for quality, safety and value in the discovery, development and manufacturing of medicines for people and animals. Our diversified global health care portfolio includes human and animal biologic and small molecule medicines and vaccines, as well as nutritional products and many of the world's best-known consumer products. Every day, Pfizer colleagues work across developed and emerging markets to advance wellness, prevention, treatments and cures that challenge the most feared diseases of our time. Consistent with our responsibility as the world's leading biopharmaceutical company, we also collaborate with health care providers, governments and local communities to support and expand access to reliable, affordable health care around the world. For more than 150 years, Pfizer has worked to make a difference for all who rely on us.

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