Dr. Brahmer's research and clinical practice focuses on the development of new therapies, including immunotherapies, for the treatment and prevention of lung cancer and mesothelioma. She was involved in the phase 1 trial of the PD-1 blocking antibody, nivolumab. Dr. Brahmer is a member of the American Society of Clinical Oncology and the Eastern Cooperative Oncology Group (ECOG) Thoracic Committee and Cancer Prevention Steering Committee.