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HER2/neu Expression in Gastric Adenocarcinoma Biopsy Specimens
| Manual Quantitative HER2/neu IHC Score | No.
|
Total, No. (%) | ||
|---|---|---|---|---|
| Intestinal | Diffuse | Mixed | ||
| 0 | 6 | 8 | 2 | 16 (59) |
| 1+ | 2 | 0 | 0 | 2 (7) |
| 2+ | 1 | 1 | 0 | 2 (7) |
| 3+ | 4 | 3 | 0 | 7 (26) |
| Total | 13 | 12 | 2 | 27 (100) |
| HER2/neu overexpression (IHC 3+), % | 31 | 25 | 0 | |
| Overall cases with HER2/neu overexpression: 7/27 (26%) | ||||
Abbreviations: HER2/neu, human epidermal growth factor receptor 2; IHC, immunohistochemistry.
