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Differences in presentation and progression between severe FIC1 and BSEP deficiencies.

Authors: Pawlikowska, Ludmila  Strautnieks, Sandra  Jankowska, Irena  Czubkowski, Piotr  Emerick, Karan  Antoniou, Anthony  Wanty, Catherine  Fischler, Bjorn  Jacquemin, Emmanuel  Wali, Sami  Blanchard, Samra  Nielsen, Inge-Merete  Bourke, Billy  McQuaid, Shirley  Lacaille, Florence  Byrne, Jane A  van Eerde, Albertien M  Kolho, Kaija-Leena  Klomp, Leo  Houwen, Roderick  Bacchetti, Peter  Lobritto, Steven  Hupertz, Vera  McClean, Patricia  Mieli-Vergani, Giorgina  Shneider, Benjamin  Nemeth, Antal  Sokal, Etienne  Freimer, Nelson B  Knisely, A S  Rosenthal, Philip  Whitington, Peter F  Pawlowska, Joanna  Thompson, Richard J  Bull, Laura N 
Citation: Pawlikowska L, etal., J Hepatol. 2010 Jul;53(1):170-8. doi: 10.1016/j.jhep.2010.01.034. Epub 2010 Apr 13.
Pubmed: (View Article at PubMed) PMID:20447715
DOI: Full-text: DOI:10.1016/j.jhep.2010.01.034


BACKGROUND & AIMS: Progressive familial intrahepatic cholestasis (PFIC) with normal serum levels of gamma-glutamyltranspeptidase can result from mutations in ATP8B1 (encoding familial intrahepatic cholestasis 1 [FIC1]) or ABCB11 (encoding bile salt export pump [BSEP]). We evaluated clinical and laboratory features of disease in patients diagnosed with PFIC, who carried mutations in ATP8B1 (FIC1 deficiency) or ABCB11 (BSEP deficiency). Our goal was to identify features that distinguish presentation and course of these two disorders, thus facilitating diagnosis and elucidating the differing consequences of ATP8B1 and ABCB11 mutations.
METHODS: A retrospective multi-center study was conducted, using questionnaires and chart review. Available clinical and biochemical data from 145 PFIC patients with mutations in either ATP8B1 (61 "FIC1 patients") or ABCB11 (84 "BSEP patients") were evaluated.
RESULTS: At presentation, serum aminotransferase and bile salt levels were higher in BSEP patients; serum alkaline phosphatase values were higher, and serum albumin values were lower, in FIC1 patients. Elevated white blood cell counts, and giant or multinucleate cells at liver biopsy, were more common in BSEP patients. BSEP patients more often had gallstones and portal hypertension. Diarrhea, pancreatic disease, rickets, pneumonia, abnormal sweat tests, hearing impairment, and poor growth were more common in FIC1 patients. Among BSEP patients, the course of disease was less rapidly progressive in patients bearing the D482G mutation.
CONCLUSIONS: Severe forms of FIC1 and BSEP deficiency differed. BSEP patients manifested more severe hepatobiliary disease, while FIC1 patients showed greater evidence of extrahepatic disease.

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RGD ID: 14402418
Created: 2019-05-31
Species: All species
Last Modified: 2019-05-31
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.