We genotyped these 6 miR-SNP of miRNA processing machinery genes including XPO5 (rs11077), RAN (rs14035), Dicer (rs3742330), TNRC6B (rs9623117), GEMIN3 (rs197412), GEMIN4 (rs2740348) in 108 HCC patients and 80 healthy controls, no statistically significant association (p<0.05) between patients and healthy controls was detected (data not shown). This evidence concerns the gene DDX20 and hepatocellular carcinoma.