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Case Reports
. 2000 Dec;23(8):791-804.
doi: 10.1023/a:1026756501669.

Hepatocellular carcinoma despite long-term survival in chronic tyrosinaemia I

S Z Kim  1 , K G Kupke, L Ierardi-Curto, E Holme, J Greter, R M Tanguay, J Poudrier, M D'Astous, F Lettre, S H Hahn, H L Levy
Affiliations
Case Reports

Hepatocellular carcinoma despite long-term survival in chronic tyrosinaemia I

S Z Kim et al. J Inherit Metab Dis. 2000 Dec.

Abstract

Tyrosinaemia I (fumarylacetoacetate hydrolase deficiency) is an autosomal recessive inborn error of tyrosine metabolism that produces liver failure in infancy or a more chronic course of liver disease with cirrhosis, often complicated by hepatocellular carcinoma, in childhood or early adolescence. We studied a 37-year-old woman with tyrosinaemia I whose severe liver disease in infancy and rickets during childhood resolved with dietary therapy. From 14 years of age she resumed an unrestricted diet with the continued presence of the biochemical features of tyrosinaemia, yet maintained normal liver function. In adult years she accumulated only small amounts of succinylacetone. Despite this evolution to a mild biochemical and clinical phenotype, she eventually developed hepatocellular carcinoma. Her fumarylacetoacetate hydrolase genotype consists of a splice mutation, IVS6-1g>t, and a novel missense mutation, Q279R. Studies of resected liver demonstrated the absence of hydrolytic activity and of immunological expression of fumarylacetoacetate hydrolase in liver tumour. In nontumoral areas, however, 53% of normal hydrolytic activity and immunologically present fumarylacetoacetate hydrolase was found. This case demonstrates the high risk of liver cancer in tyrosinaemia I even in a seemingly favourable biological environment.

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