KCNH2 and colorectal cancer: The human ether a gò-gò related (hERG1) channels (KCNH2 or Kv 11.1, according to the most recent nomenclature) are voltage-dependent K+ channels that are overexpressed in human endometrial adenocarcinoma (Cherubini et al, 2000), myeloid leukaemia (Pillozzi et al, 2002) and colorectal cancer (Lastraioli et al, 2004).