Table 1 Comparison of clinical and pathologic characteristics of breast cancer patients according to the phospho-p90RSK expression
| Â | Â | Low P90RSK | High P90RSK | Â |
|---|---|---|---|---|
Mean age |  | 55.3 (±10.4) | 48.3 (±11.9) | 0.004 |
Initial tumor size (cm) |  | 5.1 (±2.3) | 5.2 (2.4) | 0.734 |
cT stage | cT1-2 | 18 (55%) | 38 (48%) | 0.339 |
| Â | cT3-4 | 15 (45%) | 41 (52%) | Â |
cN stage | cN0-1 | 21 (64%) | 40 (51%) | 0.149 |
| Â | cN2-3 | 12 (36%) | 39 (49%) | Â |
pCR | pCR no | 29 (88%) | 72 (91%) | 0.414 |
| Â | pCR yes | 4 (12%) | 7 (9%) | Â |
Estrogen receptor | ER negative | 18 (55%) | 42 (53%) | 0.530 |
| Â | ER positive | 15 (45%) | 37 (47%) | Â |
Progesterone receptor | PR negative | 10 (67%) | 36 (64%) | 0.560 |
| Â | PR positive | 5 (33%) | 20 (36%) | Â |
HER2 overexpression | HER2 negative | 10 (67%) | 39 (70%) | 0.527 |
| Â | HER2 positive | 5 (33%) | 17 (30%) | Â |