Olaparib (ovarian cancer, breast cancer, pancreatic cancer, prostate cancer Rucaparib (ovarian cancer, prostate cancer) Niraparib (advanced epithelial ovarian, fallopian tube, or primary peritoneal cancer) Talazoparib (BRCA‐mutated HER2‐negative advanced or metastatic breast cancer). The gene discussed is ERBB2; the disease is peritoneum cancer.