Table 1.

GEO datasets enrolled in the study.

Database	Source	Sample			Platform
		T	P	N
GSE26566	https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE26566	106	59	6	Illumina v2.0
GSE32879	https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE32879	16	-	7	Affymetrix 1.0 ST
GSE76297	https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE76297	91	92	-	Affymetrix HTA-2_0
GSE45001	https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE45001	10	10	-	Agilent-028004
GSE31370	https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE31370	6	-	5	Illumina V4.0

T: tumor tissues; P: para-cancerous tissues; N: normal intrahepatic bile duct tissues or non-tumor tissues.