Pfizer's breast cancer compound wins FDA's Breakthrough Therapy designation

Published on April 11, 2013 at 3:14 AM · No Comments

Pfizer Inc. announced today its investigational compound palbociclib (PD-0332991), an oral and selective inhibitor of cyclin dependent kinases (CDK) 4 and 6, has received Breakthrough Therapy designation by the United States Food and Drug Administration (FDA) for the potential treatment of patients with breast cancer.

“We appreciate the opportunity that Breakthrough Therapy designation provides to work closely with the FDA on the development of palbociclib”

Enacted as part of the 2012 FDA Safety and Innovation Act (FDASIA), Breakthrough Therapy designation is intended to expedite the development and review of a potential new medicine if it is "intended, alone or in combination with one or more other drugs, to treat a serious or life-threatening disease or condition and preliminary clinical evidence indicates that the drug may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints." The Breakthrough Therapy designation is distinct from the FDA's other mechanisms to expedite drug development and review.

"We appreciate the opportunity that Breakthrough Therapy designation provides to work closely with the FDA on the development of palbociclib," said Dr. Mace Rothenberg, senior vice president of clinical development and medical affairs for Pfizer's Oncology business unit. "Palbociclib is one example of Pfizer's commitment to identifying and translating innovative science into meaningful new treatment options for cancer patients."

Pfizer will continue to work with the FDA to better understand the implications of Breakthrough Therapy designation on the palbociclib development program and to generate evidence needed to support a potential regulatory submission. The FDA's requirements for a potential submission have not yet been defined.

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