ATP8B1 and benign recurrent intrahepatic cholestasis type 1: A previous study has reported ATP8B1 mutations L127P and E981K in patients with familial intrahepatic cholestasis type 1 (PFIC1), while the mutation I344F is identified in patients with benign recurrent intrahepatic cholestasis type 1 (BRIC1) [33, 34].