Table 1.
Clinical features of 289 African American patients with primary invasive breast cancer selected for young age at diagnosis, family history, or TNBC
| N | Prop. | |
|---|---|---|
| Age at breast cancer diagnosis | ||
| < 45 | 180 | 0.62 |
| 45–59 | 85 | 0.29 |
| 60+ | 24 | 0.08 |
| Personal history of ovarian cancer | ||
| Yes | 7 | 0.02 |
| No | 282 | 0.98 |
| Cancer in 1° or 2° relative | ||
| Breast cancer dx < 60 | 144 | 0.50 |
| Ovarian cancer, any age | 29 | 0.10 |
| Male breast cancer, any age | 5 | 0.02 |
| Neither | 67 | 0.23 |
| Unknown | 64 | 0.22 |
| Tumor hormone receptor status | ||
| Estrogen receptor (ER) | ||
| Positive | 109 | 0.38 |
| Negative | 135 | 0.47 |
| Unknown | 46 | 0.16 |
| Progesterone receptor (PR) | ||
| Positive | 83 | 0.29 |
| Negative | 153 | 0.53 |
| Unknown | 53 | 0.18 |
| Her2/neu | ||
| Positive | 35 | 0.12 |
| Negative | 177 | 0.61 |
| Unknown | 77 | 0.27 |
| Triple negative (TNBC) | ||
| Yes | 103 | 0.36 |
| No | 131 | 0.45 |
| Unknown | 55 | 0.19 |
| Stage | ||
| 1 | 69 | 0.24 |
| 2 | 91 | 0.31 |
| 3 | 56 | 0.19 |
| 4 | 15 | 0.05 |
| Unknown | 58 | 0.20 |
| Grade | ||
| I | 9 | 0.03 |
| II | 71 | 0.25 |
| III | 128 | 0.44 |
| Unknown | 81 | 0.28 |
| All patients | 289 | 1.00 |