6,097
Participants
Start Date
July 14, 2025
Primary Completion Date
October 31, 2025
Study Completion Date
October 31, 2025
Initiation of palbociclib plus letrozole
Initiation of palbociclib plus letrozole described in electronic health records is used as the exposure.
Initiation of letrozole
Initiation of letrozole described in electronic health records is used as the reference.
Brigham and Women's Hospital, Boston
Food and Drug Administration (FDA)
FED
Brigham and Women's Hospital
OTHER