Pfizer's new type of bc drug may get OK early (Update)

besa

http://medicalxpress.com/news/2015-01-analysts-pfi...

"The first in a new class of cancer medicines, Pfizer's Ibrance,...[ the drug, known chemically as palbociclib}...appears poised for approval to treat advanced breast cancer."....

"Those drugs are believed to block enzymes, called CDK4 and 6, that help cancer cells divide uncontrollably.

Pfizer is seeking approval to market Ibrance for patients with advanced breast cancer whose growth is fueled by the hormone estrogen but not the growth factor HER2—the majority of postmenopausal women with breast cancer. If approved, Ibrance would be given with an older cancer drug, letrozole, which reduces estrogen production. The two drugs would work synergistically".