| Group | No tested | mRNA expression (No positive/No tested) | Protein expression (No positive/No tested) |
| Non-cancerous lung tissue | 60 | 0/60 | 0/60 |
| Squamous cell carcinomas | 35 | 21/35 | 18/35 |
| I/II | 18 | 11/18 | 9/18 |
| III/IV | 17 | 10/17 | 9/17 |
| Adenocarcinomas | 18 | 0/18 | 0/18 |
| I/II | 10 | 0/10 | 0/10 |
| III/IV | 8 | 0/8 | 0/8 |
| Adenosquamous carcinomas | 5 | 2/5 | 2/5 |
| I/II | 3 | 1/3 | 1/3 |
| III/IV | 2 | 1/2 | 1/2 |
| Large cell lung carcinomas | 2 | 1/2 | 1/2 |
| I/II | 1 | 0/1 | 0/1 |
| III/IV | 1 | 0/1 | 0/1 |