Table 1.
Clinical characteristics of the study population (n = 35). Pathologic characteristics are from institutional clinical pathologic assessment without central review.
| Age at diagnosis | 75 y (mean); 43–95 y (range) |
| ER status | |
| ER+ (Allred 7) | 7 |
| ER+ (Allred 8) | 28 |
| HER2 status | |
| HER2+ | 3 |
| HER2− | 32 |
| Histologic grade | |
| 1 | 2 |
| 2 | 22 |
| 3 | 11 |
| Lymph node status | |
| Positive | 14 |
| Negative | 20 |
| Unknown (no surgery) | 1 |
| Menopausal status | |
| Pre | 1 |
| Post | 34 |
| Surgery | |
| Wide local excision | 23 |
| Mastectomy | 11 |
| No surgery | 1 |
| Adjuvant therapy | |
| Endocrine therapy | 35 |
| Chemotherapy | 6 |
| Radiotherapy | 17 |
Abbreviation: y, years.