Number of Patients, Male	8
Number of Patients, Female	3
Stage	Stage IIIB with unresectable, stage IV
Age	Median (range): 62 (41–74) years
Performance Status: ECOG	0 — 1 1 — 10 2 — 3 — Unknown —
Other
During the period from May 30, 2016, to March 27, 2019, 37 patients from six centers were enrolled in the present study. Twenty‐six patients were included in the experimental group, and 11 patients were included in the control group (Fig. 3). The baseline and clinical characteristics of the two groups were well balanced, with no statistically significant differences (Table 1). Regarding the data cutoff (March 27, 2019), 11 patients in the control cohort had tissue or cytology available for testing.
Cancer Types or Histologic Subtypes	Nonsquamous cell, 8; squamous cell, 3