Robert D. Timmerman, MD, is Professor of Radiation Oncology and Neurosurgery, and Effie Marie Cain Distinguished Chair in Cancer Therapy Research at the University of Texas Southwestern Medical Center in Dallas, Texas, where his primary practice involves the treatment of adult and children with brain tumors. He was the principal investigator or co-investigator on several prospective trials designed to evaluate the efficacy and toxicity of stereotactic body radiation therapy in lung, liver, spine, and pelvic sites. He is the national principal investigator of Radiation Therapy Oncology Group (RTOG) trials using this therapy in patients with early stage lung cancer.

Research Interest:
Effect of SAbR on immune function and immunotherapy
Hypofractionated Radiation Therapy
Radiation Response Modifiers
Stereotactic Body Radiation Therapy