Abstract
Cholestasis with normal gamma glutamyl transferase characterizes functional deficiencies in the gene ABCB11, which encodes the bile salt export pump (BSEP), a liver-specific adenosine triphosphate (ATP)-binding cassette transporter. Here we report the case of a patient presenting with features of benign recurrent intrahepatic cholestasis associated with a heterozygous mutation in the ABCB11 gene. Immunohistochemistry showed a gradual decrease of BSEP from zone 1 to zone 3 of the liver lobule, suggesting that the mutation identified here may predispose patients to cholestasis through a delocalization process of BSEP at the lobular level. (HEPATOLOGY 2013;57:2539-2541).
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