Table 1. Patient characteristics.

Samples	Serum	Stage (T/M/N)	Smoking status (yes/no)	Histological subtype
Total sample size, N	77		46/21
Healthy controls, N	32	0/0/0	10/12	Wild type
Cancer cases, N	45	19/17/9	36/9	EGFR/ALK/ROS-1/CMET/TTF1
By stage (%)				–
I	22.9%	3/5/3	9/2	EGFR/ALK/ROS-1
II	14.3%	3/1/2	6/0	EGFR/ALK
III	31.4%	4/4/6	11/3	ALK/ROS-1/CMET
IV	31.4%	5/6/3	9/5	EGFR/ALK/TTF1
Gender, N (male/female)		–	–	–
Controls	20/12	–		–
Cancer cases	30/15	–		–
Age (years)				–
Controls	32–65	0/0/0	10/12	–
Cancer cases	50–60	19/17/9	36/9	–