Table I.

Information on the datasets included in the current study.

Dataset	Reference	Platform	No. of samples (normal/tumor)
GSE9348	Hong et al, 2010 (8)	[HG-U133_Plus_2] Affymetrix Human Genome U133 Plus 2.0 Array	12/12
GSE22598	Okazaki et al, 2011 (9)	[HG-U133_Plus_2] Affymetrix Human Genome U133 Plus 2.0 Array	17/17
GSE113513	Peng et al, 2018 (unpublished)	[PrimeView] Affymetrix Human Gene Expression Array	14/14
TCGA_CRC	The Cancer Genome Atlas (TCGA) data portal	IlluminaHiseq (Illumina, San Diego, CA)	51/647