KCNQ1 codes for the potassium voltage-gated channel subfamily Q member 1, which has been shown to play important physiological roles in the mammary epithelium [33] and has been suggested to act as a tumor suppressor and regulator of the epithelial–mesenchymal transition in colorectal cancers [34,35]. The gene discussed is KCNQ1; the disease is colorectal cancer.