Saliva samples from healthy controls (HC), other diseases (OD) and lung adenocarcinoma (ADC) (LC). Sample collection was performed in strict accordance with the procedures specified in this study. (Mean age expressed as mean ± standard deviation.).

	HC	OD	LC
Demographic	N = 14	N = 20	N = 29
Age at diagnosis	49 ± 17	58 ± 16	64 ± 10
Age distribution	25–66	26–78	45–82
Male	10	12	20
Female	4	8	9