Besides this, ID4, SEMA3F, FOXD, KCNK5, WNK4 and ECM1 associate with chemoresistance origin and SOX5, ITM2A, SNCG, EPHA4, NTS, FGFR2 and ENPEP associate moreover with breast cancer tumorigenesis. This evidence concerns the gene KCNK5 and breast cancer.