Table 1. Immunohistochemistry score distribution of all cases (KPNA2).
| IHC score | Number of cases (%) | ||||||
| YST | IT | DYS | EC | MT | MTWMT | Total | |
| 0 | 2 | 27 | 2 | 2 | 2 | 4 | 39 |
| 1 | 0 | 2 | 1 | 1 | 1 | 0 | 5 |
| 2 | 2 | 1 | 1 | 0 | 2 | 2 | 8 |
| 3 | 2 | 1 | 2 | 0 | 0 | 1 | 6 |
| 4 | 1 | 2 | 0 | 0 | 1 | 0 | 4 |
| 6 | 4 | 4 | 1 | 0 | 1 | 1 | 11 |
| 8 | 2 | 0 | 2 | 0 | 0 | 0 | 4 |
| 9 | 3 | 0 | 0 | 0 | 1 | 0 | 4 |
| 12 | 4 | 1 | 2 | 0 | 2 | 0 | 9 |
| Total | 20 | 38 | 11 | 3 | 10 | 8 | 90 |
Cutoff value: 2.5. An SI score ≥2.5 defined tumors with high KPNA2 expression, and an SI score ≤2.5 indicated low expression. YST: yolk sac tumor; IT: immature teratoma; DYS: dysgerminoma; EC: embryonal carcinoma; MT: mixed germ cell tumors; MTWMT: mature teratomas with malignant transformation.