28 Dixon Dixon PH PH Sambrotta Sambrotta M M Chambers Chambers J J et al et al An expanded role for heterozygous mutations of ABCB4, ABCB11, ATP8B1, ABCC2 and TJP2 in intrahepatic cholestasis of pregnancy An expanded role for heterozygous mutations of ABCB4, ABCB11, ATP8B1, ABCC2 and TJP2 in intrahepatic cholestasis of pregnancy Sci Rep Sci Rep 2017 2017 7 7 11823 11823 28924228 28924228. This evidence concerns the gene TJP2 and intrahepatic cholestasis.