palbociclib,letrozole
pfizer,novartis
['palbociclib', 'paloma-2', 'bcsm', 'letrozole', 'breast']
#asco22 news: paloma-2 data show no significant overall survival benefit of adding palbociclib to letrozole in er-positive, her2-negative advanced #breastcancer #bcsm 
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