Dr. David P. Carbone, Director of the Thoracic Oncology Center at Ohio State University, comments on a study evaluating the efficacy of anti–PD1/PD-L1 monotherapy for patients with NSCLC and active brain metastases: “…the initial hope that PD‑1 inhibitors could be active on brain metastases has not been fully fulfilled, and the aggressive use of stereotactic radiation in that setting is useful.”