Analysis of the AluI polymorphism in intron 1 of the human coagulation factor VIII gene: A new marker for the hemophilia a carrier detection

Analysis of the AluI polymorphism in intron 1 of the human coagulation factor VIII gene: A new... Frequencies of the C/T SNP alleles at position 2403 of the human coagulation factor VIII gene intron 1, containing the AluI restriction endonuclease recognition site, were examined. Genomic DNA samples for the analysis were obtained from the consulted women and their relatives from the families with hemophilia A. A total of 221 unrelated X chromosomes were studied. The two allelic variants were found with similar frequencies of T(Alu+), 0.53 and C(Alu−), 0.47. The heterozygosity index evaluated as equal to 0.50 was correlated with the experimental heterozygote number. The absence of a tight linkage between the AluI SNP and the widely used in the hemophilia A gene diagnostics HindIII polymorphism (C/T SNP at position 103 of intron 19) was demonstrated. Summarized informativity of these two markers for obligate carriers and for those detected in this study constituted 68% (32 out of 47). At the same time using one of the markers, only 40% (HindIII) and 51% (AluI) of the consulted women were informative. The new marker was used in 13 prenatal DNA diagnostics of hemophilia A. A new deletion polymorphism (del TGA, position 2281–2283 of intron 1) was described in close proximity of the AluI SNP with the frequency of about 0.05. among the five other SNP of the factor VIII gene examined (Bme18I, intron 1; HpaII, intron 13; MnlI, exon 14; Bst4CI, exon 25; and MseI, exon 26) no effective diagnostic markers were found. Only the MnlI polymorphism could be recommended for limited usage. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Analysis of the AluI polymorphism in intron 1 of the human coagulation factor VIII gene: A new marker for the hemophilia a carrier detection

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2007 by Pleiades Publishing, Inc.
Subject
Biomedicine; Human Genetics; Animal Genetics and Genomics; Microbial Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795407040151
Publisher site
See Article on Publisher Site

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