X chromosome inactivation in breast cancer patients and controls
| Age range | Subjects with skewed X inactivation | |||
|---|---|---|---|---|
| (median) | No (%) | Total number | p value | |
| Patients | 27–40 (38) | 4 (22) | 18 | 0.003 |
| Controls | 20–40 | 3 (2) | 144 | |
| Patients | 27–45 (41) | 5 (13) | 40 | 0.009 |
| Controls | 19–45 (33) | 1 (1) | 95 | |
| Patients | 27–65 (51) | 10 (7) | 136 | 0.005 |
| Controls | 19–65 (40) | 1 (0.7) | 138 | |
| Patients | 55–72 (63) | 7 (8) | 91 | 0.35 |
| Controls | 55–72 (65) | 4 (4) | 91 | |
| Patients | 73–90 (78) | 6 (14) | 43 | 0.27 |
| Controls | 73–93 (77) | 43 (21) | 202 |