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Nayagam, Jeremy S.; Jeyaraj, Rebecca; Foskett, Pierre; Dhawan, Anil; Ala, Aftab; Joshi, Deepak; Bomford, Adrian; Thompson, Richard J.
Clinical gastroenterology and hepatology, 20/May , Letnik: 21, Številka: 5Journal Article
Although a good genotype-phenotype correlation has not been established in Wilson disease (WD), patients with loss-of-function (LOF) ATP7B variants demonstrate different clinical and biochemical characteristics. We aim to describe long-term treatment outcomes in the chronic liver disease (CLD) phenotype and evaluate an association with LOF variants. This was a single-center retrospective review of WD patients with at least 1 variant in ATP7B. Demographic, biochemical, genetic, and clinical parameters were obtained. The composite clinical endpoint of liver transplantation or death was used for probands with CLD phenotype on chelators. Of 117 patients with hepatic WD: 71 had CLD, 27 had fulminant hepatic failure requiring urgent liver transplantation, and 19 were diagnosed through family screening. Median age at diagnosis was 13.1 (interquartile range, 9.7–17.6) years. In total, 91 variants in ATP7B were identified in the study population. At least 1 LOF variant was present in 60 (51.3%) patients. During median follow-up of 10.7 (interquartile range, 6.7–18.9) years, 10 (14.1%) of the probands with CLD reached the composite endpoint. There was a worse transplant-free survival for patients prescribed chelation therapy in patients with at least 1 LOF variant (P = .03). Patients with WD and CLD phenotype on chelators, who have at least 1 LOF variant in ATP7B, have a worse prognosis during long-term follow up. This subgroup of patients requires close monitoring for signs of progressive liver disease. Sequencing of ATP7B may be used in the diagnosis of WD, and in addition, it may provide useful prognostic information for patients with hepatic WD. Display omitted
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in: SICRIS
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