AACR: PARP1-selective inhibitor demonstrates early efficacy in breast cancers with DNA repair defects

The first-in-class PARP1-selective inhibitor saruparib demonstrated encouraging early efficacy and a favorable safety profile in patients with homologous recombination repair (HRR)-deficient breast cancers, according to results from the Phase I/II PETRA trial led by researchers at The University of Texas MD Anderson Cancer Center.