Table 3.
Postoperative characteristics of 109 ER-positive/HER2-negative breast cancer patients who underwent neoadjuvant chemotherapy
| Number | Percent | |
|---|---|---|
| Pathologic stage, postoperativea | ||
| yp0 (pathologic CR) | 8 | 7.3 |
| yp1A | 21 | 19.3 |
| yp1B | 7 | 6.4 |
| yp2A | 25 | 22.9 |
| yp2B | 20 | 18.3 |
| yp3A | 21 | 19.3 |
| yp3B | 0 | 0 |
| yp3C | 7 | 6.4 |
| ER, Allred scoreb | ||
| 0–2 | 13 | 13.8 |
| 3–5 | 4 | 4.3 |
| 6–8 | 77 | 81.9 |
| PR, Allred scoreb | ||
| 0–2 | 24 | 25.5 |
| 3–5 | 30 | 31.9 |
| 6–8 | 40 | 42.6 |
| Ki67 index statusb, % | ||
| < 14 | 67 | 71.3 |
| 14–100 | 25 | 26.6 |
| NE | 2 | 2.1 |
| Lymphovascular invasionb | 37 | 39.4 |
| Histological gradeb,c | ||
| G1 | 20 | 18.3 |
| G2 | 56 | 51.3 |
| G3 | 14 | 12.8 |
| NE | 19 | 17.4 |
| Recurrence | 18 | 16.5 |
| Local | 1 | |
| Regional | 1 | |
| Regional ➔ distant | 2 | |
| Distant | 14 | |
| Death | 12 | 11.0 |
| breast cancer-related | 11 | 10.1 |
Abbreviations: CR Complete response, ER Estrogen receptor, PR Progesterone receptor, NE Not evaluated
aAJCC 8th edition
bEvaluated among 94 patients who had residual tumors of the operated breast
cModified Scarff-Bloom-Richardson grading system