Table 1. Patient characteristics.
| Number of patients: | 50 | |
|---|---|---|
| Age: median, (range) | Years | 72 (48–85) |
| Gender: n, (%) | Female | 18 (36) |
| Male | 32 (64) | |
| Smoking history: n, (%) | Pack-year ≥30 | 25 (50) |
| Pack-year <30 | 7 (14) | |
| Never smoker | 18 (36) | |
| Histology: n, (%) | Adenocarcinoma | 30 (60) |
| - EGFR* mutated | 12 (39) | |
| - ALK** rearrangement | 2 (6) | |
| Squamous cell | 7 (14) | |
| Small cell | 10 (20) | |
| Others | 2 (4) | |
| Performance status: n, (%) | 0 | 10 (20) |
| 1 | 30 (60) | |
| ≥2 | 10 (20) | |
| Stage: n, (%) | III | 7 (14) |
| IV | 43 (86) | |
| Previous systemic therapies: n, (%) | 0 | 35 (70) |
| 1 | 8 (16) | |
| ≥2 | 7 (14) | |
*EGFR, epidermal growth factor receptor
**ALK, anaplastic lymphoma kinase.