126
Participants
Start Date
September 17, 2015
Primary Completion Date
September 30, 2026
Study Completion Date
September 30, 2026
3-Dimensional Conformal Radiation Therapy
Undergo 3D-CRT
Intensity-Modulated Radiation Therapy
Undergo IMRT
Laboratory Biomarker Analysis
Correlative studies
Pembrolizumab
Given IV
Proton Beam Radiation Therapy
Undergo PBRT
Radiation Therapy
Undergo low dose radiation therapy
Stereotactic Body Radiation Therapy
Undergo SBRT
M D Anderson Cancer Center, Houston
M.D. Anderson Cancer Center
OTHER