Table 1.

Characteristics of the Patients at Baseline

Age	64 (41–67)
Sex
Male  Female	69 (92%) 6 (8%)
Smoking history
Current/former  Never	67 (89%) 8 (11%)
Tumour lesion size, mm
Median (range)	39 (15–67)
Nodal stage
N1  N2	26 (35%) 49 (65%)
TNM stage
IIb  IIIa  IIIb	24 (32%) 41 (55%) 10 (13%)
Histology
Squamous-cell carcinoma  Adenocarcinoma	60 (80%) 15 (20%)
PD-L1 expression
< 1%  1–50%  ≥ 50%  NA	21 (28%) 21 (28%) 10 (13%) 23 (31%)