Table 2. Mean EBV load (BamHIC copies) according to biological characteristics.
| Characteristics | Mean EBV load (BamHIC copies per 100 ng GAPDH) | P-value |
|---|---|---|
| Age (years) | ||
| <50 | 0.79 | 0.42 |
| ⩾50 | 7.84 | |
| Tumour size (pT) | ||
| <2 cm | 1.28 | 0.70 |
| ⩾2 cm | 10.60 | |
| Nodal status (pN) | ||
| N− | 1.40 | 0.34 |
| N+ | 13 | |
| Histological grade | ||
| I | 0.32 | 0.006 |
| II | 2.58 | |
| III | 15.7 | |
| ER | ||
| Negative | 1.64 | 0.01 |
| Positive | 20.58 | |
| PR | ||
| Negative | 1.83 | 0.20 |
| Positive | 14.67 | |
| UPA | ||
| Low | 7.48 | 0.56 |
| High | 1.12 | |
| PAI-1 | ||
| Low | 7.21 | 0.75 |
| High | 1.93 | |
| TK | ||
| Low | 1.87 | 0.009 |
| High | 17.95 | |
| No HER2 amplification | 27.9 | 0.10 |
| HER2 amplification | 1.9 | |
Abbreviations: ER=oestrogen receptor; PAI-1=plasminogen activator inhibitor 1; PR=progesterone receptor; TK=thymidine kinase; UPA=urokinase plasminogen activator.