Abstract
Hemophilia A is an X-linked recessive bleeding disorder caused by a quantitative or qualitative deficiency of blood coagulation factor VIII (FVIII). ARMS (amplification refractory mutation system) primers were designed to determine allele frequencies of three FVIII gene linked markers, IVS7 nt 27 G/A SNP, BclI/intron 18, and HindIII/intron 19 among 85 normal Iranian women from unrelated families. Then same method was applied to perform carrier detection for hemophilia A families. The allele frequencies of IVS7 nt 27 "G"/"A" allele, BclI "T"/"A" allele, and HindIII "C"/"T" allele among normal women were 0.88/0.12, 0.52/0.48, and 0.48/0.52, respectively. The three polymorphisms were found to be in strong linkage disequilibrium, which decreased the overall heterozygosity to 51%. Twenty-one women from 15 unrelated hemophilia A families were referred to us for hemophilia A carrier detection. Taking advantage of these three biallelic polymorphisms in conjunction with multiallelic St14 VNTR (locus DXS52), IVS13 (CA)n STR, and IVS22 (CA)n STR, carrier status was determined in 16 women (16/21 or 76% of the at-risk women) from 11 families (11/15 or 73% of the families). The used ARMS methods are rapid and can easily be applied in conjunc...Continue Reading
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