In addition, depending on the severity of the disease, inherited intrahepatic cholestasis resulting from mutations in ATP8B1 or ABCB11 can be classified as either PFIC1 or 2, respectively, or benign recurrent intrahepatic cholestasis (BRIC) 1 or 2, respectively. This evidence concerns the gene ABCB11 and benign recurrent intrahepatic cholestasis.