Previously, we have demonstrated that the oncogenic potassium channel ether a go-go-1 (EAG1) is down-regulated by calcitriol both in HeLa and SiHa cervical cancer cell lines [52], by a mechanism involving the repressive function of a negative VDRE in the EAG1 promoter [53]. Here, KCNH1 is linked to cervical carcinoma.