Home Bratislava Medical Journal 2015 Bratislava Medical Journal Vol.116, No.1, p.14-19, 2015

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Published Monthly, in English
Founded: 1919
ISSN 0006-9248
(E)ISSN 1336-0345
 

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Bratislava Medical Journal Vol.116, No.1, p.14-19, 2015

Title: DNA typing of HLA-A, -C, -B, AND -DRB1 in the children with autism in the Republic of Macedonia
Author: V. Trajkovski, M. Spiroski

Abstract:

In the present study, we report the first DNA analysis of HLA class I and class II alleles in Macedonian autistic subjects. We have analyzed the HLA-A, -C, -B, DRB1 genotypes of 35 autistic patients, and 98 healthy unrelated Macedonians (control group). HLA DNA typing of class I genes was performed using a Reverse Line Strip method (RLS), and the Sequencing Based Typing method (SBT) was used for typing of class II genes. In the autistic subjects for HLA-A locus 14 alleles have been identified with 2 being predominant *02 (25.7 %), and *24 (18.6 %). Among the 11 identified HLA-C alleles, 3 were predominant such as *12 (20.0 %), *07 (17.1 %), and *03 (12.9 %). Among the 18 identified HLA-B alleles, 2 were predominant: *51 (18.6 %), and *18 (11.4 %). For HLA-DRB1 locus, 10 alleles have been identified with 2 of them predominant such as: *11 (21.4 %), and *01 (14.3 %).

The allele and haplotype frequencies in the patients group were compared to those of 98 control subjects. Our results showed significantly increased frequencies of HLA-C*03 (OR = 2.74*; χ2 = 4.68; p = 0.03), and HLA-DRB1*01 (OR = 3.10*; χ2 = 6.26; p = 0.012) alleles in autistic patients when compared to the controls.

The most frequent haplotype frequencies in autistic sample were A*11-C*12-B*52-DRB1*15 (2.9 %), A*24-C*03-B*55-DRB1*16 (2.9 %), and A*24-C*03-B*55-DRB1*16 (2.9 %), but they were not statistically significant when compared to the control group. None of our patients carried allele or haplotype, which were protective in our population.

Hardy-Weinberg equilibrium in autistic group showed that HLA-A (p < 0.03), HLA-C (p < 0.04), and HLA-DRB1 (p < 0.002) loci were in linkage disequilibria.

In the control group, we found only for the HLA-DRB1 locus linkage disequilibrium (p < 0.002).

Our results demonstrated the association of HLA-C*03 and HLA-DRB1*01 alleles with Macedonian autistic patients (Tab. 7, Ref. 37).



Keywords: HLA-DNA typing, autism, allele frequencies, haplotype frequencies, Republic of Macedonia.
Year: 2015, Volume: 116, Issue: 1 Page From: 14, Page To: 19
doi:10.4149/BLL_2015_003


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