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Clin Genet. 2003 Feb;63(2):145-9.

Rapid detection methods for five HGO gene mutations causing alkaptonuria.

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Institute of Molecular Physiology and Genetics, Faculty of Natural Sciences, Comenius University Bratislava, Bratislava, Slovakia.


Alkaptonuria (AKU) is an autosomal recessive disorder caused by the deficiency of homogentisate 1,2 dioxygenase (HGO) activity. The disease is characterized by homogentisic aciduria, ochronosis and ochronotic arthritis. AKU shows a very low prevalence (1:250 000), in most ethnic groups. Altogether 43 HGO mutations have been identified in approximately 100 patients. In Slovakia, however, the incidence of this disorder rises up to 1:19 000, and 10 different AKU mutations have been identified in this relatively small country. Here, we report detection methods developed for rapid identification of five HGO mutations. PCR primers were designed enabling detection of mutations IVS5 + 1G-->A, R58fs, and V300G by restriction digestion of amplification-created restriction sites (ACRS). Mutation G152fs is readily identified by heteroduplex analysis, and G161R by amplification refractory mutation system (ARMS) PCR.

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