271TiPPreoperative pembrolizumab (Pembro) with radiation therapy (RT) in patients with operable triple-negative breast cancer (TNBC). (23rd October 2018) - McArthur, H L; Basho, R; Shiao, S; Park, D; Dang, C; Karlan, S; Knott, S; Mita, M; Dilauro Abaya, C; Giuliano, A E; Dadmanesh, F; Ho, A