NMS-P293 (also known as NMS-03305293) is an innovative, second-generation oral small molecule inhibitor specifically targeting PARP1. Developed by Nerviano Medical Sciences, it distinguishes itself from first-generation PARP inhibitors through its high selectivity for PARP1 over PARP2, which significantly reduces hematological toxicities like bone marrow suppression.A defining feature of NMS-P293 is its non-trapping mechanism; by inhibiting enzyme activity without trapping PARP on DNA, it offers a superior safety profile that allows for effective combination with DNA-damaging chemotherapies. Furthermore, it possesses exceptional blood-brain barrier (BBB) permeability, making it a leading candidate for treating primary CNS tumors like glioblastoma and brain metastases.
