Pfizer (PFE) And Medivation (MDVN) Initiate Two Phase 3 Trials Of Dimebon

November 3, 2009 8:08 AM EST

Pfizer Inc (NYSE: PFE) and Medivation, Inc. (NASDAQ: MDVN) announced the initiation of CONTACT and CONSTELLATION, two Phase 3 trials of the investigational drug dimebon (latrepirdine)* in patients with moderate-to-severe Alzheimer's disease (AD).

The CONTACT study will assess as primary endpoints the potential benefits of adding dimebon to ongoing treatment with donepezil HCI tablets, the leading AD medication worldwide, on neuropsychiatric symptoms and activities of daily living. The CONSTELLATION study will evaluate as primary endpoints the effects of adding dimebon to memantine HCI, another standard of care, on cognition, memory and activities of daily living.

In preclinical studies, dimebon has been shown to protect brain cells from damage and enhance brain cell survival, potentially by stabilizing and improving mitochondrial function. The dimebon mechanism is distinct from currently available AD medications.

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