Deficiency in hepatic tyrosine aminotransferase (TAT) causes tyrosinemia type II, an autosomal recessively inherited disorder. Using a TAT cosmid clone, we have identified an MspI restriction fragment length polymorphism (RFLP) 5' to the TAT gene, with allele frequencies of 0.63 and 0.37. Analysis o
The human fumarylacetoacetase gene: characterisation of restriction fragment length polymorphisms and identification of haplotypes in tyrosinemia type 1 and pseudodeficiency
✍ Scribed by Helge Rootwelt; Eli Anne Kvittingen; Kari Høie; Etienne Agsteribbe; Marijke Hartog; Henk Faassen; Rund Berger
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 897 KB
- Volume
- 89
- Category
- Article
- ISSN
- 0340-6717
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✦ Synopsis
Deficiency of human fumarylacetoacetase (FAH) activity results in hereditary tyrosinemia type I. Using the restriction enzymes BglII, KpnI and StuI and a 1.3-kb cDNA probe for the FAH gene, we have found 6 restriction fragment length polymorphisms (RFLPs). These RFLPs were utilised in 3 tyrosinemia families in which one or both parents are carriers of both a tyrosinemia and a pseudodeficiency gene for FAH. Full information was obtained in two of these families. The polymorphisms identified 6 haplotypes. The haplotype distribution was significantly different in 32 unrelated tyrosinemia patients compared with a reference population of 100 individuals. The combined polymorphism information content was 0.77.
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