Pfizer and Medivation Initiate Two Phase 3 Trials of Dimebon

Pfizer IncPfizer 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.

"Alzheimer's disease is a growing global epidemic with an unmet clinical need. Many patients with moderate-to-severe Alzheimer's disease experience behavioral and neuropsychiatric symptoms, which are among the leading causes of placement in care facilities for these patients," said Pierre N. Tariot, MD, director of the Memory Disorders Center at the Banner Alzheimer's Institute and study investigator. "These studies are intended to evaluate the potential added benefits of dimebon in combination with current standards of Alzheimer's care."

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.

"Pfizer and Medivation are committed to developing dimebon as a treatment that may meaningfully improve the lives of patients across the full spectrum of Alzheimer's disease severity," said Lynn Seely, M.D., chief medical officer for Medivation. "The initiation of the CONTACT and CONSTELLATION studies is an important milestone in the broad clinical development of dimebon."

These studies are part of a comprehensive Phase 3 clinical development program, currently consisting of seven trials, to assess the safety and efficacy of dimebon across all stages of Alzheimer's disease, as monotherapy and in combination with currently available Alzheimer's treatments, and in Huntington disease.

* Latrepirdine is the proposed generic (nonproprietary) name for dimebon.

About the CONTACT Study
This Phase 3 randomized, double-blind, placebo-controlled study will enroll approximately 600 patients with moderate-to-severe AD and neuropsychiatric symptoms at approximately 75 sites in Europe and South America. Patients who are already taking donepezil will be randomized to also receive either dimebon 20 mg three times daily or placebo for six months.

The CONTACT study is designed to assess patients' behavioral difficulties and their ability to perform routine activities of daily living. Behavior will be measured by the Neuropsychiatric Inventory (NPI), while self-care and daily function will be measured by the Alzheimer's Disease Cooperative Study - Activities of Daily Living (severe) (ADCS-ADLsev). Secondary endpoints include measures of cognition, memory, global function, pharmacoeconomic impact, quality of life and safety and tolerability.

For more information about the CONTACT study, please visit www.ContactStudy.com.

About the CONSTELLATION Study
This Phase 3 randomized, double-blind, placebo-controlled study will enroll approximately 570 patients with moderate-to-severe AD at approximately 80 sites in the United States, Canada and Europe. Patients already taking memantine will be randomized to also receive either dimebon 20 mg three times daily or placebo for six months.

The CONSTELLATION study will evaluate the potential benefits of adding dimebon to ongoing memantine therapy on cognition, memory and activities of daily living. Cognition and memory will be measured by the Severe Impairment Battery (SIB), while self-care and daily function will be measured by the Alzheimer's Disease Cooperative Study - Activities of Daily Living (severe) (ADCS-ADLsev). Secondary endpoints include measures of cognitive and behavioral symptoms, global function, resource utilization, quality of life, safety and tolerability.

For more information about the CONSTELLATION study, please visit www.ConstellationStudy.com.

About Alzheimer's Disease
Alzheimer's disease is a progressive degenerative brain disorder that gradually destroys a person's memory and ability to learn, reason, make judgments, communicate and carry out daily activities. As the disease progresses, patients may experience changes in personality and behavior, such as delusions, hallucinations, anxiety, and agitation.

About the Pfizer/Medivation Dimebon Collaboration
Medivation and Pfizer have a global collaboration to develop and commercialize dimebon for the treatment of Alzheimer's disease and Huntington disease. Under the terms of the agreement, the companies are working in partnership to advance the Phase 3 development program with the goal of submitting a new drug application to the FDA and bringing dimebon to market in the United States. In addition, pending FDA approval, Medivation will co-promote dimebon to specialty physicians in the U.S. Pfizer has responsibility for development, regulatory and commercialization outside of the U.S.

For more information about Pfizer, visit www.Pfizer.com.

For more information about Medivation, visit www.Medivation.com.

Most Popular Now

Most popular vitamin and mineral supplements provi…

The most commonly consumed vitamin and mineral supplements provide no consistent health benefit or harm, suggests a new study led by researchers at St. Michael's Hospital...

AstraZeneca heads to 2018 ASCO Annual Meeting with…

AstraZeneca and MedImmune, its global biologics research and development arm, head to the 2018 American Society of Clinical Oncology (ASCO) Annual Meeting in Chicago, US...

Tiny particles could help fight brain cancer

Glioblastoma multiforme, a type of brain tumor, is one of the most difficult-to-treat cancers. Only a handful of drugs are approved to treat glioblastoma, and the median ...

New approach to immunotherapy leads to complete re…

A novel approach to immunotherapy developed by researchers at the National Cancer Institute (NCI) has led to the complete regression of breast cancer in a patient who was...

Spiolto® Respimat® enables greater physical activi…

Boehringer Ingelheim announced data which add to the growing body of evidence that show Spiolto® (tiotropium/olodaterol) Respimat® enables greater physical activity in pa...

Amgen Foundation and Harvard team up to offer free…

The Amgen Foundation and Harvard University today announced plans to launch a free online science education platform uniquely designed to level the playing field for aspi...

The Pfizer Foundation announces $5 million in gran…

The Pfizer Foundation announced a new $5 million grant commitment to initiatives in low- and middle-income countries that provide family planning access and education for...

Study finds antioxidant-enriched vitamin reduces r…

Researchers at Children's Hospital Colorado (Children's Colorado) and the University of Colorado School of Medicine have found that taking a specially formulated antioxid...

New drugs could also be deployed against lung and …

A new anti-cancer drug may be effective against a wider range of cancers than previously thought. Using a mouse model and samples taken from cancer patients, a team from ...

What would help or hinder patient participation in…

As clinical trials gear up with the aim of attaining the first FDA-approved treatments for mitochondrial disease, a new study reports for the first time what patients and...

Pfizer to expand venture investing with $600 milli…

Pfizer Inc. (NYSE:PFE) today announced it plans to invest $600 million in biotechnology and other emerging growth companies through Pfizer Ventures, the company’s venture...

Update on Phase III clinical trials of lanabecesta…

AstraZeneca and Eli Lilly and Company (Lilly) are discontinuing the global Phase III clinical trials of lanabecestat, an oral beta secretase cleaving enzyme (BACE) inhibi...