GSK’s Zejula and Mesothelioma Treatment: A Paradigm Shift in Prognosis?

Malignant pleural mesothelioma (MPM) is a devastating cancer arising from the lining of the lungs, often linked to asbestos exposure. With a notoriously poor prognosis and limited treatment options, advancements in MPM therapy are urgently needed. The recent presentation of data from the NERO study at the American Association of Cancer Research (AACR) Annual Meeting 2025 has brought a promising development to the forefront: the efficacy of GSK’s Zejula (niraparib), a poly (ADP-ribose) polymerase (PARP) inhibitor, in significantly reducing the risk of disease progression and death in MPM patients. This essay aims to explore the potential implications of the NERO study findings, contextualize Zejula’s mechanism of action, analyze its impact on the mesothelioma treatment landscape, and discuss the broader challenges and future directions for MPM research.