Table I.
Features of the Gene Expression Omnibus datasets included in the present analysis.
| Series accession | First author (year) | Region | Array type | Tumor samples (n) | Type (number) of control samples | Upregulated genes (n) | Downregulated genes (n) | (Refs.) |
|---|---|---|---|---|---|---|---|---|
| GSE89749 | Jusakul (2017) | Asia | Illumina HumanHT-12 V4.0 expression beadchip | 118 | Non-tumor bile duct from the same patients as the tumor tissue (n=2) | 18 | 767 | (22) |
| GSE76297 | Chaisaingmongkol (2017) | North America | [HTA-2_0] Affymetrix Human Transcriptome Array 2.0 [transcript (gene) version] | 91 | Matched peritumoral liver tissue (n=91) | 46 | 242 | (23) |
| GSE57555 | Murakami (2015) | Asia | Agilent-039494 SurePrint G3 Human GE v2 8x60K Microarray 039381 | 16 | Matched peritumoral liver tissue (n=16) | 14 | 17 | (24) |
| GSE32879 | Oishi (2012) | North America | [HuGene-1_0-st] Affymetrix Human Gene 1.0 ST Array [transcript (gene) version] | 16 | Paired non-tumor tissue from the same patients as the tumor tissue (n=7) | 159 | 534 | (25) |
| GSE26566 | Andersen (2012) | Europe | Illumina human Ref-8 v2.0 expression beadchip | 104 | Matched peritumoral liver tissue (59) | 4,889 | 3,801 | (26) |