TABLE 1.

The composition of four different gene expression omnibus datasets.

GEO series	NSCLC	Normal	Total number
GSE75037	83	83	166
GSE21933	21	21	42
GSE27262	25	25	50
GSE102287	32	34	66

Abbreviations: NSCLC, non-small cell lung cancer; GEO, gene expression omnibus.