Tarlatamab for Large Cell Neuroendocrine Carcinoma in a Young Adult: A Case Report.

A 20-year-old man with metastatic large cell neuroendocrine carcinoma of the lung was treated with the delta-like ligand 3-targeting bispecific T cell engager, tarlatamab. Treatment was complicated by transient cytokine release syndrome but resulted in a partial response. Bispecific T cell engagers may offer a novel treatment approach for large cell neuroendocrine carcinoma of the lung.