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Background and purpose

The aim of the present report is to emphasize that the source of elevated transaminase levels, although usually indicative of hepatocellular damage, can also be of extrahepatic origin.

Case report

A 42-year-old female presented with a moderate persistent elevation of the transaminases glutamic-oxaloacetic transaminase (GOT; synonym: aspartate aminotransferase [AST]) and glutamic-pyruvic transaminase (GPT; synonym: alanine aminotransferase [ALT]) in blood without any apparent clinical symptoms of liver affection. In the course of further diagnostics for clarification of a suspected liver disease, a markedly elevated activity of creatine kinase was found which, in concert with results from myography, magnetic resonance imaging (MRI) and analysis of muscle biopsies, suggested the tentative diagnosis of a distal myopathy type Miyoshi. The diagnosis was confirmed by identification of the underlying mutation in the dysferlin gene. The course of the disease has been slowly but steadily progressive; there is no therapeutic option at present. The relevance of molecular genetic analyses in the diagnostic procedure for distal myopathies, in particular dysferlinopathy, is discussed and the characteristics of this disease are summarized.

Conclusion

In the case of persistent elevations of the serum transaminases GOT and GPT without liver disorder, a myopathy has to be taken into account as a potential extrahepatic source. In order to avoid needless nondirected expensive investigations and to prevent a delay in diagnostics, activity of serum creatine kinase should be determined which is moderately to strongly elevated in the case of myopathies. If, in particular, a dysferlinopathy is supposed, the underlying mutation should be identified to confirm the diagnosis and as a basis for current and future therapeutic interventions"xsd:string
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http://purl.uniprot.org/citations/15221058http://purl.uniprot.org/core/author"Bruss M."xsd:string
http://purl.uniprot.org/citations/15221058http://purl.uniprot.org/core/author"Molderings G.J."xsd:string
http://purl.uniprot.org/citations/15221058http://purl.uniprot.org/core/author"Homann J."xsd:string
http://purl.uniprot.org/citations/15221058http://purl.uniprot.org/core/date"2004"xsd:gYear
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http://purl.uniprot.org/citations/15221058http://purl.uniprot.org/core/pages"326-329"xsd:string
http://purl.uniprot.org/citations/15221058http://purl.uniprot.org/core/title"[Dysferlinopathy as an extrahepatic cause for the elevation of serum transaminases]."xsd:string
http://purl.uniprot.org/citations/15221058http://purl.uniprot.org/core/volume"99"xsd:string
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