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  • Title: Late-onset Wilson's disease.
    Author: Ferenci P, Członkowska A, Merle U, Ferenc S, Gromadzka G, Yurdaydin C, Vogel W, Bruha R, Schmidt HT, Stremmel W.
    Journal: Gastroenterology; 2007 Apr; 132(4):1294-8. PubMed ID: 17433323.
    Abstract:
    BACKGROUND & AIMS: The clinical symptoms and age at onset of Wilson's disease (WD) are highly variable. This study investigated patients who became symptomatic at >40 years of age. METHODS: Clinical features, laboratory data, and mutation analysis were evaluated in 46 (3.8%) of 1223 patients who were investigated in a multinational study on genotype-phenotype correlations (1053 index patients, 170 siblings) who were >40 years of age at onset of symptoms and, in 2 asymptomatic siblings, diagnosed at >40 years of age. RESULTS: Thirty-one patients presented with neurologic symptoms (mean age, 44.5 years; range, 40-52; male/female, 14/17), 15 presented with liver disease (mean age, 47.1 years; range, 40-58; male/female, 6/9), and 2 were asymptomatic siblings. Hepatic copper content was measured in 17 patients and was above 250 microg/g dry weight in 13. One patient with hepatic presentation had "fulminant" WD, the remaining 14 abnormal liver function tests and/or hepatomegaly. Liver biopsy specimens were available in 13 patients presenting with liver disease (cirrhosis, 10; chronic hepatitis, 2; steatosis, 1; no abnormalities, 1) and in 14 neurologic patients (cirrhosis, 9; advanced fibrosis, 1; chronic hepatitis, 2; no abnormalities, 2). Twenty-seven of the 46 index cases had mutations on both chromosomes (including 13 H1069Q/H1069Q), 13 on just 1 chromosome. CONCLUSIONS: Late-onset WD is a frequently overlooked condition. The diagnostic features and the frequency of late-onset WD gene mutations were not different than in patients with an earlier onset of disease. Factors other than ATP7B mutations may modify the phenotypic presentation of WD.
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