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  • Title: A Report of 2 Infant Siblings with Progressive Intrahepatic Familial Cholestasis Type 1 and a Novel Homozygous Mutation in the ATP8B1 Gene Treated with Partial External Biliary Diversion and Liver Transplant.
    Author: Jankowska I, Pawłowska J, Szymczak M, Ismail H, Broniszczak D, Cielecka-Kuszyk J, Socha P, Jarzębicka D, Czubkowski P.
    Journal: Am J Case Rep; 2021 Jul 20; 22():e932374. PubMed ID: 34283821.
    Abstract:
    BACKGROUND Current treatment options for progressive intrahepatic familial cholestasis type 1 (PFIC-1) comprise ursodeoxycholic acid (UDCA), partial external biliary diversion (PEBD), and liver transplantation (LTx). The role and timing of LTx in PFIC-1 remains debated. We present 2 case reports of male siblings with PFIC-1 who benefited from different treatments. CASE REPORT Both siblings harbored a homozygous truncating mutation in ATP8B1 characteristic for PFIC-1 and both underwent PEBD after unsuccessful UDCA treatment at the age of 7 and 5 months, respectively. The older brother, after initial improvement of symptoms, developed severe pruritus, cholestasis, and diarrhea 9 months after PEBD and underwent LTx at the age of 16 months. Chronic diarrhea and abnormal transaminases activity appeared soon after transplantation. A liver biopsy was performed 3 months after LTx and showed severe macrovesicular steatosis (95%). Sixteen months after LTx, total biliary diversion was performed, with rapid relief from diarrhea and significant regression of graft steatosis by <30%. In his brother we observed persistent severe pruritus and cholestasis after PEBD, but we decided to postpone LTx due to lack of a living related donor and risk of graft steatosis. Eight months after PEBD, bilirubin and bile acids significantly decreased and pruritus disappeared completely. Currently, in 5-year follow-up, liver function is stable and he has no pruritus. CONCLUSIONS The good effect of PEBD may be delayed in PFIC-1, even in severe mutation; thus, the decision to perform LTx should be made cautiously. Total biliary diversion is an efficient procedure in case of persistent symptoms after LTx and can reverse graft steatosis in children with PFIC-1.
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