(A) Schematic representation of the location of miR-874 in chr5:136983261-136983338. Three CpG sites(cg19032799, cg04184179, cg03894789 ), located on chromosome chr5:136983354, chr5: 136983367 and chr5: 136983373, represented as yellow spot located in the promoter region of miR-874. (B) The methylation level for three CpG sites (cg19032799, cg04184179, cg03894789) in breast cancer tissues compared with para-normal tissues from external breast cancer cohort in TCGA database. (C) miR-874 expression negatively correlated with against the DNA methylation levels of its 300-upstream region (spearmanr = −0.321, P value < 0.01) depicted MethHC (http://MethHC.mbc.nctu.edu.tw).