HER2 genomic and protein expression statuses of matched biopsies and surgical resection specimens
| Patient no | Gastric biopsies | Surgical resection specimens | ||
| Immunohistochemistry | Dual-colour chromogenic in situ hybridisation (HER2/Chr17 ratio) | Immunohistochemistry | Fluorescence in situ hybridisation (HER2/Chr17 ratio) | |
| 1 | 0 | Non-amplified (1.20) | 3+ | Amplified (4.47) |
| 2 | 0 | Non-amplified (1.12) | 3+ | Amplified (4.93) |
| 3 | 0 | Amplified (3.16) | 3+ | Amplified (3.40) |
| 4 | 3+ | Amplified (8.79) | 3+ | Amplified (9.00) |
| 5 | 0 | Amplified (4.20) | 3+ | Amplified (3.22) |
| 6 | 3+ | Amplified (6.60) | 3+ | Amplified (7.89) |
| 7 | 0 | Amplified (2.59) | 2+ | Amplified (2.70) |
| 8 | 3+ | Amplified (4.97) | 3+ | Amplified (3.38) |
| 9 | 0 | Amplified (2.54) | 3+ | Amplified (2.47) |
| 10 | 3+ | Amplified (3.09) | 3+ | Amplified (3.06) |
| 11 | 3+ | Amplified (4.27) | 3+ | Amplified (4.27) |
| 12 | 0 | Amplified (3.42) | 1+ | Amplified (3.10) |