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The immunohistochemical features of adenocarcinomas according to the ALK fusion and EGFR mutation status.
| ALK FISH-positive | ALK FISH-negative/EGFR mutation-negative | ALK FISH-negative/EGFR mutation-positive | |
|---|---|---|---|
| TTF-1 | 34/39 (87.2%) | 199/279 (71.3%) | 105/109 (96.3%) |
| Napsin | 29/39 (74.4%) | 154/231 (66.7%) | 86/93 (92.5%) |
The number of cases positively reactive for each antibody over the total number of stained cases was recorded.
