Medivation Presents Positive New Data on Dimebon's Long-Term Efficacy and Novel Mechanism of Action at the International Conference on Alzheimer... (-term benefits to Alzheimer'spatients an...)

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Medivation Presents Positive New Data on Dimebon's Long-Term Efficacy and Novel Mechanism of Action at the International Conference on Alzheimer's Disease

Date:7/30/2008

-term benefits to Alzheimer's patients and provide further support for its potential as a promising therapeutic to treat this devastating disease."

Patients originally on placebo for 12 months who were then crossed over to Dimebon in the open-label extension phase stabilized across all key measures tested. Since these patients had declined over the previous 12 months while on placebo, they generally stabilized at a lower level of function than those treated with Dimebon for the full 18 months, suggesting a benefit of earlier treatment.

Dimebon Benefits Both Mild and Moderate Patients in 12-month Subgroup Analyses

New data from subgroup analyses by disease severity of the Dimebon double-blind placebo-controlled trial showed that Dimebon benefited both mild and moderate patients. In both mild and moderate patients, Dimebon treatment resulted in significant benefit on the study's primary endpoint, the Alzheimer's Disease Assessment Scale-cognition subscale, or ADAS-cog. The benefit in the moderate subpopulation was particularly robust, with a 9.7 point drug-placebo difference on the ADAS-cog (p<0.0001) after 12 months of treatment.

The subgroup analyses were presented in a separate poster presentation at ICAD 2008 by Rachelle Doody, M.D., Ph.D., the Effie Marie Cain Chair in Alzheimer's Disease Research at the Alzheimer's Disease and Memory Disorders Center, Baylor College of Medicine in Houston. "A nearly 10-point improvement over placebo in moderate patients on the ADAS-cog, a well-validated cognition scale in Alzheimer's disease, is unquestionably of clinical significance, especially in light of a clinical effect seen on the clinician's assessment of global function," said Dr. Doody. "If the results we saw for both the mild and moderate patients can be replicated, I believe that Dimebon will be an important advance in the treatment of Alzheimer's disease, regardless of stage."

Dimebon's Novel Mechanism of Action

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