Molecular genetic study of acute intermittent porphyria in Russia: Mutation analysis and functional polymorphism search in porphobilinogen deaminase gene

Molecular genetic study of acute intermittent porphyria in Russia: Mutation analysis and... Acute intermittent porphyria (AIP) is an autosomal dominant hereditary disease, caused by partial deficiency of porphobilinogen deaminase (PBGD), one of the key enzymes of heme biosynthesis. This study describes molecular genetics of AIP in Russia. Mutation analysis of PBGD gene in 70 unrelated patients revealed 47 various genetic defects, 28 of which had not been described previously. Mutations 53delT and Arg173Trp (recorded 8 times, in total 23%) proved to be the most common in Russia. Microdeletion 53delT has monophyletic origin and was found only in Russia. Molecular genetic examination of 132 relatives of AIP patients from 40 families revealed 52 latent carriers of the disease. Low (about 10%) AIP penetrance indicates that a mutation in the PBGD gene is an important but not sufficient prerequisite for clinical manifestation of the disease. Modulation of penetrance in erythropoietic protoporphyria by coinheritance of a mutant allele and a functionally defective wild type allele of ferrochetalase gene has been shown previously. We hypothesized that similar mechanism works in AIP. Sequencing of the full length PBGD genes from unrelated AIP patients as well as SNP analysis, and the analysis of abnormal PBGD mRNA splicing showed that in case of AIP, this hypothesis is not true and some other factors are responsible for the penetrance of this disease. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Molecular genetic study of acute intermittent porphyria in Russia: Mutation analysis and functional polymorphism search in porphobilinogen deaminase gene

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795410040149
Publisher site
See Article on Publisher Site

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