Clinicopathological characteristics of patients
| EGFR mutation | KRAS mutation | Wild type | Total | |||
| No. patients | p-Value | No. patients | p-Value | No. patients | ||
| Total no. patients | 2 | 9 | 66 | 77 | ||
| Age | ||||||
| Mean (max/min) | 71.5 (70/73) | – | 70 (56/82) | – | 68.4 (39/85) | 68.7 (39/85) |
| Sex | ||||||
| Male | 1 | 7 | 45 | 53 | ||
| Female | 1 | 0.546 | 2 | 0.709 | 21 | 24 |
| Histotypes | ||||||
| Adenocarcinoma | 2 | 8 | 51 | 61 | ||
| Non-adenocarcinoma | – | 1.000 | 1 | 0.679 | 15 | 16 |
| Staging | ||||||
| I | 1 | – | 32 | 33 | ||
| II–IV | 1 | 1.000 | 9 | 0.008 | 34 | 44 |
| Grading | ||||||
| Well differentiated | 1 | 3 | 22 | 26 | ||
| Moderately and poorly Differentiated | 1 | 1.000 | 6 | 1.000 | 44 | 51 |
| Smoking status | ||||||
| Current/former | 1 | 8 | 58 | 67 | ||
| Never | 1 | 0.244 | 1 | 1.000 | 8 | 10 |