Variable | Categorization | IHC | Realtime PCR | ||
---|---|---|---|---|---|
 |  | n1 | % | n1 | % |
Clinicopathological factor: | Â | Â | Â | Â | |
Age at diagnosis | Â | Â | Â | Â | |
Median, range (years) | 57.5 (25–82) | 57.5 (28–85) | |||
 | ≤ 50 years | 54 | 29.2 | 10 | 27.8 |
 | > 50 years | 128 | 69.2 | 26 | 72.2 |
 | unknown | 3 | 1.6 | 0 | 0 |
Tumor stage2 | Â | Â | Â | Â | Â |
 | pT1 | 46 | 24.9 | 15 | 41.7 |
 | pT2 | 92 | 49.7 | 16 | 44.4 |
 | pT3 | 13 | 7.0 | 0 | 0 |
 | pT4 | 30 | 16.2 | 4 | 11.1 |
 | pTx3 | 4 | 2.2 | 1 | 2.8 |
Lymph node status2 | Â | Â | Â | Â | |
 | pN0 | 71 | 38.4 | 19 | 52.8 |
 | pN1–3 | 104 | 56.2 | 15 | 41.7 |
 | pNx3 | 10 | 5.4 | 2 | 5.6 |
Grading | Â | Â | Â | Â | Â |
 | G1/G2 | 100 | 54.1 | 19 | 52.8 |
 | G3 | 80 | 43.2 | 15 | 41.7 |
 | Gx3 | 5 | 2.7 | 2 | 5.6 |
Histological type | Â | Â | Â | Â | Â |
 | ductal | 145 | 78.4 | 34 | 94.4 |
 | lobular | 13 | 7.0 | 1 | 2.8 |
 | other | 19 | 10.3 | 1 | 2.8 |
 | unknown | 8 | 4.3 | 0 | 0 |
Immunohistochemistry (IHC): | Â | Â | Â | Â | |
Estrogen receptor status | Â | Â | Â | Â | |
 | negative (IRS4 0–2) | 49 | 26.5 | 11 | 30.6 |
 | positive (IRS 3–12) | 97 | 52.4 | 21 | 58.3 |
 | unknown | 39 | 21.1 | 4 | 11.1 |
Progesterone receptor status | Â | Â | Â | Â | |
 | negative (IRS4 0–2) | 107 | 57.8 | 12 | 33.3 |
 | positive (IRS 3–12) | 49 | 26.5 | 20 | 55.6 |
 | unknown | 29 | 15.7 | 4 | 11.1 |
HER2 expression status | Â | Â | Â | Â | Â |
 | negative (0–1+) | 120 | 64.9 | 6 | 16.7 |
 | positive (2+-3+) | 38 | 20.5 | 5 | 13.9 |
 | unknown | 27 | 14.6 | 25 | 69.4 |