Concordance of HER2 status* between biopsy and surgical resection specimens
| Surgical resection specimen HER2 status | |||
| Positive | Negative | ||
| Gastric biopsy HER2-status | Positive | 5 | 0 |
| Negative | 6 | 1 | |
(p=0.10).
↵* HER2-positive status (immunohistochemistry 3+ or immunohistochemistry 2+/fluorescence in situ hybridisation-amplified) as defined in the Trastuzumab for Gastric Cancer trial.