| Number of patients | 37 |
| Age (years) | |
| Median (Range) | 69.0 (50 - 80) |
| Sex | |
| Male | 26 (70.3%) |
| Female | 11 (29.7%) |
| Performance status | |
| 0 | 12 (32.4%) |
| 1 | 20 (54.1%) |
| 2 | 5 (13.5%) |
| Histology | |
| Adenocarcinoma | 26 (70.3%) |
| Squamous cell carcinoma | 6 (16.2%) |
| Unclassified | 5 (13.5%) |
| Stage | |
| IIIB | 8 (21.6%) |
| IV | 29 (78.4%) |
| Smoking history | |
| Never | 14 (37.8%) |
| Current or former | 22 (59.5%) |
| Uncertainty | 1 (2.7%) |
| Number of prior chemotherapy regimen(s) | |
| 1 | 26 (70.3%) |
| 2 | 11 (29.7%) |
| EGFR gene status | |
| Mutated (sensitive mutation) | 12 (32.4%) |
| Wild-type | 15 (40.5%) |
| Unknown | 10 (27.0%) |