Hereditary Breast Cancer Syndromes
| Syndrome | Known susceptibility gene(s) |
| Site-specific breast cancer | BRCA1, BRCA2 |
| Site-specific ovarian cancer | BRCA1 |
| Breast–ovarian cancer | BRCA1,BRCA2 |
| Cowden syndrome | PTEN |
| Li-Fraumeni syndrome | p53 |
| HNPCC (Lynch syndrome) | hMSH2,hMLH1,hPMS2 |