Table 1 Baseline clinical characteristics of all patients
Patient characteristics | All patients (n = 42) | % |
|---|---|---|
Age (years) | ||
 Median (range) | 69 (43–85) |  |
 < 70 | 23 | 54.8 |
 ≥70 | 19 | 45.2 |
Sex | ||
 Male | 34 | 81.0 |
 Female | 8 | 19.0 |
Smoking history | ||
 Never | 5 | 11.9 |
 Current or former | 37 | 88.1 |
Histology | ||
 Adenocarcinoma | 20 | 47.6 |
 Squamous cell carcinoma | 22 | 52.4 |
EGFR mutation status | ||
 Del-19 | 1 | 2.4 |
 Exon 18 | 1 | 2.4 |
 Wild type | 22 | 52.4 |
 Unknown | 18 | 42.8 |
PD-L1 (TPS) | ||
 0 | 2 | 4.8 |
 5–49 | 3 | 7.1 |
 ≥50 | 5 | 11.9 |
 Unknown | 32 | 76.2 |
Number of previous chemotherapy regimen | ||
 1 | 22 | 52.4 |
 2 | 8 | 19.0 |
 ≥3 | 12 | 28.6 |
Number of administrations | ||
 Median (range) | 9 (1–64) |  |
 1–5 | 11 | 26.2 |
 6–10 | 13 | 31.0 |
 11–30 | 10 | 23.8 |
 ≥31 | 8 | 19.0 |
Type of specimen material | ||
 Brush | 29 | 69.1 |
 TBB | 8 | 19.0 |
 FNA (Lymph node) | 4 | 9.5 |
 CTGB | 1 | 2.4 |