palbociclib,letrozole
pfizer,novartis
['letrozole', 'palbo', 'palbociclib', 'breast', 'bcsm']
first-line treatment with palbociclib plus letrozole demonstrated survival improvement vs letrozole monotherapy in patients with er-positive/her2-negative advanced breast cancer. #bcsm #asco22 
Oncology news and insights from leading researchers and cancer centers.