Table 2.
Pattern of invasive disease-free survival events according to a type of BRCA-mutated gene.
BRCA1 cohort N (%) n = 808 | BRCA2 cohort N (%) n = 428 | P valuea | |
---|---|---|---|
Follow-up, median (IQR) | 7.9 (5.4 to 10.6) | 7.9 (6.0 to 10.6) | 0.95 |
No events | 492 (60.9) | 262 (61.2) | 0.76 |
Loco-regional recurrence | 54 (6.7) | 36 (8.4) | 0.35 |
Distant recurrence ± loco-regional recurrence | 84 (10.4) | 66 (15.4) | 0.02 |
Second primary malignancy | 35 (4.3) | 8 (1.9) | 0.02 |
Ovarian cancer | 18 (2.2) | 1 (0.2) | |
Other | 7 (0.9) | 4 (0.9) | |
Missing | 10 (1.2) | 3 (0.7) | |
Second primary breast cancer | 137 (17.0) | 52 (12.2) | 0.009 |
Death without any disease-free survival event | 6 (0.7) | 4 (0.9) | 0.79 |
IQR interquartile range.
aP-values for time-dependent events estimated by means of the Log-rank test.