Patient group | Breast cancer and mutation status | Number of patients | Age in years, median (range) | Genetic predisposition | Parity | Hormone use at time of surgery | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Family history | BRCA1 | BRCA2 | 0 | 1 or 2 | 3 or 4 | Data lacking | HRT | OC | Data lacking | ||||
A | Cancer, non-BRCA1/2 | 21 | 50 (31–77) | 4 | NA | NA | 8 | 4 | 9 | 0 | 3 | 1 | 0 |
B | Cancer, BRCA1 | 17 | 43 (23–81) | 17 | 17 | NA | 4 | 10 | 0 | 3 | 4 | 1 | 3 |
C | Cancer, BRCA2 | 11 | 51 (33–74) | 11 | NA | 11 | 0 | 7 | 3 | 1 | 0 | 1 | 2 |
D | Prophylactic mastectomy, BRCA1 | 12 | 37 (23–54) | 12 | 12 | NA | 0 | 6 | 4 | 1 | 0 | 4 | 1 |
E | Prophylactic mastectomy, BRCA2 | 11 | 37 (31–51) | 11 | NA | 11 | 0 | 5 | 5 | 1 | 0 | 0 | 1 |
F | Mammoplasty, non-cancer, non-BRCA | 34 | 31 (20–68) | 5 | NA | NA | 19 | 7 | 8 | 0 | 0 | 8 | 1 |