GJA1 and intrahepatic cholangiocarcinoma: A study assessing suburothelial biopsies suggested Cx43 was increased in NDO andIDO when compared with control biopsies; however, this remained unchanged after BoNT/A injections.13 No significant differences were seen in ICC marker (vimentin, c-kit) immunoreactivitywhen related to controls or BoNT/A administration.