1. 1Department of Immunology, University of Texas Southwestern Medical Center, Dallas, Texas.
2. 2Kidney Cancer Program, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas.
3. 3Division of Hematology and Oncology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas.
4. 4Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas.