40
Participants
Start Date
September 1, 2016
Primary Completion Date
June 27, 2019
Study Completion Date
June 30, 2021
Bevacizumab
Given IV
Cyclophosphamide
Given PO
Laboratory Biomarker Analysis
Correlative studies
Pembrolizumab
Given IV
Roswell Park Cancer Institute, Buffalo
Roswell Park Cancer Institute
OTHER