In addition, there are still some cancer predisposition genes reported in other BC-related inherited syndromes, such as CYP1B1, CCND1, CDK4, ERBB4, FANCD2, NOTCH1, SMAD4, XPC, and XRCC152–55, most of which belong to DDR-related genes. The gene discussed is CYP1B1; the disease is breast cancer.