KCNH2 and breast cancer: Kv11.1 (also named hERG1) encoded by KCNH2 gene, is another member of the voltage-gated family that has been shown to be overexpressed in several solid tumors (Lastraioli et al., 2015b) and also in BC (Fukushiro-Lopes et al., 2017; Iorio et al., 2018).