46
Participants
Start Date
April 30, 2013
Primary Completion Date
December 31, 2014
Study Completion Date
February 28, 2025
PI3K inhibitor BYL719
Given PO
letrozole
Given PO
laboratory biomarker analysis
Correlative studies
pharmacological studies
Correlative studies
Massachusetts General Hospital, Dana-Farber Cancer Institute, Boston
Vanderbilt-Ingram Cancer Center, Nashville
National Cancer Institute (NCI)
NIH
Vanderbilt-Ingram Cancer Center
OTHER