Table 3.
Genetics-informed changes in radiation therapy strategy
| Overall n = 185 | PGV-positive n = 25 | VUS n = 46 | Negative n = 121 | PGV versus VUS/negative, p | |
|---|---|---|---|---|---|
| Total w/change in RT strategy (% of all pts tested) | 103 (55.7) | 15 (60.0) | 21 (45.7) | 67 (55.4) | – |
| APBI or AWBI (%)a | 81 (76.7) | 2 (13.3) | 18 (85.7) | 61 (91.0) | > 0.001 |
| Omission of RT (%)a | 9 (8.7) | 2 (13.3) | 1 (4.8) | 6 (9.0) | 0.664 |
| Conventional/standard fractionation (%)a | 13 (12.6) | 11 (73.3) | 2 (9.5) | 0 (0.0) | > 0.001 |
APBI accelerated partial breast irradiation, AWBI accelerated whole breast irradiation, PGV pathogenic germline variants, RT radiotherapy
a% of pts with change in RT strategy