To confirm whether the methylation levels of the different genomic regions were related to WT1 expression, we calculated the mean beta value (an indicator of methylation level) of each patient in the 1stExon, Body, and TSS200 regions and performed correlation analysis between beta value and WT1 expression based on the TCGA’s BC primary tissue RNA-seq and methylation datasets. This evidence concerns the gene WT1 and breast cancer.