Table 1.
Characteristics of the patients with NSCLC.
| Characteristics | Discovery cohort (n = 83) | Validation cohort (n = 49) |
|---|---|---|
| Age—yr | ||
| Median | 62 | 62 |
| Range | 39–88 | 34–82 |
| Gender no. (%) | ||
| Male | 68 (81.9) | 37 (75.5) |
| Female | 15 (18.1) | 12 (24.5) |
| ECOG performance-status score—no. (%) | ||
| 0 | 0 (0) | 2 (4) |
| 1 | 74 (89.2) | 39 (79.6) |
| ≥ 2 | 9 (10.8) | 8 (16.4) |
| Tumor histologic type—no. (%) | ||
| Adenocarcinoma | 48 (57.8) | 25 (51) |
| Squamous cell carcinoma | 26 (31.3) | 13 (26.5) |
| Others | 9 (10.9) | 11 (22.5) |
| PD-L1 expression level – no. (%) | ||
| < 1% | 15 (18) | 8 (16.3) |
| ≥ 1% | 57 (68.7) | 27 (55.1) |
| Unknown | 11 (13.3) | 14 (28.6) |
ECOG Eastern Cooperative Oncology Group.