A gene encoding a liver-specific ABC transporter is mutated in progressive familial intrahepatic cholestasis

Nat Genet. 1998 Nov;20(3):233-8. doi: 10.1038/3034.

S S Strautnieks ¹, L N Bull, A S Knisely, S A Kocoshis, N Dahl, H Arnell, E Sokal, K Dahan, S Childs, V Ling, M S Tanner, A F Kagalwalla, A Németh, J Pawlowska, A Baker, G Mieli-Vergani, N B Freimer, R M Gardiner, R J Thompson

Affiliations

Affiliation

1 Department of Paediatrics, University College London Medical School, UK.

PMID: 9806540 DOI: 10.1038/3034

Abstract

The progressive familial intrahepatic cholestases (PFIC) are a group of inherited disorders with severe cholestatic liver disease from early infancy. A subgroup characterized by normal serum Cholesterol and gamma-glutamyltranspeptidase (gammaGT) levels is genetically heterogeneous with loci on chromosomes 2q (PFIC2) and 18q. The phenotype of the PFIC2-linked group is consistent with defective bile acid transport at the hepatocyte canalicular membrane. The PFIC2 gene has now been identified by mutations in a positional candidate, BSEP, which encodes a liver-specific ATP-binding cassette (ABC) transporter, sister of P-glycoprotein (SPGP). The product of the orthologous rat gene has been shown to be an effective bile acid transporter in vitro. These data provide evidence that SPGP is the human bile salt export pump (BSEP).

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