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HER2 gene amplification in ESCC, GEJAC and GC and in normal epithelial specimens.
| Group | n | Positive amplification | Positive rate (%) | χ2 | P-value |
|---|---|---|---|---|---|
| Normal specimens | 21 | 0 | 0.0 | - | - |
| ESCC | 76 | 3 | 3.9 | 0.855 | 0.355 |
| GEJAC | 50 | 12 | 24.0 | 6.065 | 0.014 |
| GC | 48 | 9 | 18.8 | 4.528 | 0.033 |
HER2, human epidermal growth factor receptor 2; ESCC, esophageal squamous cell carcinoma; GEJAC, gastroesophageal junction adenocarcinoma; GC, gastric cancer.
