Palbociclib Plus Letrozole Significantly Extends Progression-Free Survival in ER+ Breast Cancer
• Palbociclib, a CDK4/6 inhibitor, combined with letrozole, an aromatase inhibitor, significantly improved progression-free survival (PFS) in postmenopausal women with ER+/HER2- metastatic breast cancer.
• The PALOMA-1/TRIO-18 phase II trial demonstrated a median PFS of 20.2 months with the palbociclib-letrozole combination, compared to 10.2 months with letrozole alone.
• Palbociclib received accelerated FDA approval based on these results, pending confirmatory phase III trial outcomes, marking a significant advancement in targeted therapy for hormone receptor-positive breast cancer.
• Common adverse events associated with the combination therapy included neutropenia and leukopenia, manageable through dose modification and blood count monitoring.
Pfizer
Posted 3/23/2015
University of Texas Southwestern Medical Center
Posted 1/24/2014
Royal Marsden NHS Foundation Trust
Posted 3/25/2015
University of California, San Francisco
Posted 10/19/2015
Spanish Breast Cancer Research Group
Posted 3/13/2014
Pfizer
Posted 10/19/2012
Eli Lilly and Company
Posted 4/20/2015
Washington University School of Medicine
Posted 4/10/2013
German Breast Group
Posted 10/30/2013
Dana-Farber Cancer Institute
Posted 1/1/2014