On the contrary, Kv10.1 is overexpressed in a variety of cell lines derived from human malignancies and in different cancers including head and neck, gastric, colon, hepatocellular pancreatic, renal or prostate carcinoma [4–6, 12, 14, 27] within which Kv10.1 enhances the proliferation of the cells and is required for the maintenance of growth. This evidence concerns the gene KCNH1 and cancer.