|  | Mean gene expression | |||
---|---|---|---|---|---|
 | Sample number (%) | EMP1 | EMP2 | EMP3 | PMP22 |
 | 249 (100.0) | 1.090 | 0.225 | 0.115 | 0.491 |
Age | Â | Â | Â | Â | Â |
≤50 years | 84 (33.7) | 1.108 | 0.236 | 0.113 | 0.500 |
>50 years | 165 (66.3) | 1.081 | 0.220 | 0.117 | 0.487 |
Histological type | Â | Â | Â | Â | Â |
invasive ductal carcinoma | 189 (75.9) | 1.045 | 0.216 | 0.110 | 0.482 |
invasive lobular carcinoma | 40 (16.1) | 1.385 | 0.280 | 0.133 | 0.558 |
others and unknown | 20 (8.0) | 1.006 | 0.220 | 0.133 | 0.455 |
Nodal status | Â | Â | Â | Â | Â |
pN0 | 95 (38.1) | 1.128 | 0.224 | 0.122 | 0.524 |
pN1 | 124 (49.8) | 1.059 | 0.228 | 0.110 | 0.467 |
unknown | 30 (12.1) | 1.102 | 0.217 | 0.117 | 0.493 |
Tumor size | Â | Â | Â | Â | Â |
pT1 (<2 cm) | 65 (26.1) | 1.153 | 0.226 | 0.125 | 0.528 |
pT2 (2-5 cm) | 127 (51.0) | 1.011 | 0.199 | 0.110 | 0.453 |
pT3 (>5 cm) | 23 (9.2) | 1.024 | 0.289 | 0.111 | 0.514 |
pT4 | 14 (5.6) | 1.378 | 0.395 | 0.127 | 0.590 |
others and unknown | 20 (8.0) | 1.331 | 0.246 | 0.116 | 0.543 |
Differentiation grade | Â | Â | p = 0.005 | Â | p = 0.019 |
G1 | 34 (13.7) | 1.194 | 0.351 | 0.147 | 0.713 |
G2 | 123 (49.4) | 1.131 | 0.250 | 0.116 | 0.531 |
G3 | 71 (28.5) | 0.978 | 0.165 | 0.100 | 0.357 |
unknown | 21 (8.4) | 1.096 | 0.171 | 0.120 | 0.497 |
Estrogen Receptor | Â | P < 0.0001 | p < 0.001 | p < 0.001 | p < 0.001 |
positive | 133 (53.4) | 1.325 | 0.344 | 0.141 | 0.715 |
negative | 116 (46.6) | 0.875 | 0.138 | 0.092 | 0.319 |