Nirogacestat: First Approval.

Nirogacestat (OGSIVEO™) is an oral, selective, reversible, small molecule γ-secretase inhibitor developed by SpringWorks Therapeutics, Inc. γ-Secretase is a multi-subunit protease complex that cleaves multiple transmembrane protein complexes, including Notch and membrane-bound B-cell maturation antigen (BCMA). Inhibition of γ-secretase may result in growth inhibition of tumour cells overexpressing Notch, and preservation of membrane-bound BCMA may increase target density for BCMA-targeted therapy. In November 2023, nirogacestat was approved in the USA for use in adult patients with progressing desmoid tumours who require systemic treatment. This article summarizes the milestones in the development of nirogacestat leading to this first approval for the systemic treatment of desmoid tumours.