Table I.

Characteristics of the three gene expression profiling datasets for multiple myeloma downloaded for integrated analysis.

Author, year	GEO dataset ID	Platform for detection	Samples (N:M)	(Refs.)
Zhang et al, 2011	GSE23832	GPL6244 [HuGene-1_0-st] Affymetrix Human Gene 1.0 ST Array [transcript (gene) version]	4:8	(20)
Kemppinen et al, 2011	GSE21942	GPL570 [HG-U133_Plus_2] Affymetrix Human Genome U133 Plus 2.0 Array	15:12	(21)
Gandhi et al, 2010	GSE17048	GPL6947 Illumina HumanHT-12 V3.0 expression beadchip	45:99	(22)

GEO, Gene Expression Omnibus; N:M, normal:multiple myeloma.