Table 1.
Demographic and Histopathologic Characteristics of the Patients and Human Epidermal Growth Factor Receptor 2 (HER2) Overexpression (N = 150)
| Variable | Frequency (n) | Percentage (%) |
|---|---|---|
| Age | ||
| 19–40 y | 23 | 15.3 |
| 41–60 y | 72 | 48.0 |
| ≥61 y | 55 | 36.7 |
| Sex | ||
| Male | 98 | 65.3 |
| Female | 52 | 34.7 |
| Histologic subtype | ||
| Intestinal type | 77 | 51.3 |
| Diffuse type | 41 | 27.3 |
| Mixed type | 32 | 21.4 |
| Histologic grade | ||
| Well differentiated | 46 | 30.7 |
| Moderately differentiated | 54 | 36.0 |
| Poorly differentiated | 50 | 33.3 |
| Type of specimen | ||
| Biopsy | 41 | 27.3 |
| Resection | 109 | 72.7 |
| Tumor location | ||
| Gastric | 123 | 82.0 |
| Gastroesophageal junction | 27 | 18.0 |
| HER2 status | ||
| Negative (0 and 1+) | 139 | 92.7 |
| Equivocal (2+) | 2 | 1.3 |
| Positive (3+) | 9 | 6.0 |