Clinical Activity of Pembrolizumab in a Patient With Metastatic Triple-Negative Breast Cancer Without Tumor Programmed Death-Ligand 1 Expression: A Case Report and Correlative Biomarker Analysis
1 Sajjad Bhatti, Jaimie Heldstab, Carolyn Lehn, Ossama Tawfik, Ryan M. Ash, Anne P. O'Dea, Roy A. Jensen, Fang Fan, Qamar J. Khan, Andrew K. Godwin, and Priyanka Sharma, University of Kansas Medical Center, Westwood, KS; and David R. Hout, Rob S. Seitz, and Daniel B. Bailey, Insight Genetics, Nashville, TN.