Nivolumab for patients with metastatic uveal melanoma previously untreated with ipilimumab: a single-institution retrospective study.

We evaluated the efficacy of nivolumab in patients with metastatic uveal melanoma previously untreated with ipilimumab. We performed a retrospective study at the National Cancer Center Hospital in Tokyo, Japan, where nivolumab was approved 1 year earlier than ipilimumab. Clinical efficacy outcomes w