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Revista Española de Enfermedades Digestivas

Print version ISSN 1130-0108


FOMBUENA, Blanca et al. LPAC syndrome associated with deletion of the full exon 4 in a ABCB4 genetic mutation in a patient with hepatitis C. Rev. esp. enferm. dig. [online]. 2014, vol.106, n.8, pp.544-547. ISSN 1130-0108.

Low-phospholipid-associated cholelithiasis syndrome (LPAC) is associated with ABCB4 genetic mutation. ABCB4 encodes MDR3 protein, involved in biliary phosphatidylcholine excretion. Higher prevalence in women, biliary symptoms in young adults and ursodesoxycholic acid (UDCA) response are the main features. We report the case of a 48-year-old man with hepatitis C, genotype 1b, fibrosis F3, null responder to Peg-IFNα2b/ribavirin and nephritic colic. In 2011 he developed jaundice, pruritus and epigastric pain. He showed increased serum levels of AST, ALT, GGT, bilirubin and alpha-fetoprotein, and viral load (14,600,000IU/mL). Pancreatic-CT, endoscopic ultrasonography and echo-Doppler showed non-cirrhotic chronic liver disease. The episode resolved spontaneously and one year later he suffered a similar episode. UDCA was started with excellent response. An immunohistochemistry study and sequencing of ABCB4 did not find alteration. MLPA® technique detected heterozygous deletion of the full exon 4 confirming LPAC syndrome diagnosis.

Keywords : LPAC; ABCB4; MDR3; Exon 4.

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