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01.12.2018 | Research article | Ausgabe 1/2018 Open Access

BMC Medical Genetics 1/2018

HLA class I (-A, -B, -C) and class II (-DR, -DQ) polymorphism in the Mauritanian population

Zeitschrift:
BMC Medical Genetics > Ausgabe 1/2018
Autoren:
Cheikh Tijani Hamed, Ghlana Meiloud, Fatimetou Veten, Mouna Hadrami, Sidi M. Ghaber, Ely C. Boussaty, Norddine Habti, Ahmed Houmeida

Abstract

Background

HLA antigens have been widely studied for their role in transplantation biology, human diseases and population diversity. The aim of this study was to provide the first profile of HLA class I and class II alleles in the Mauritanian population.

Methods

HLA typing was carried in 93 healthy Mauritanian blood donors, using single specific primer amplification (PCR-SSP).

Results

Occurrences of the main HLA class I (-A, -B, -C) and class II (-DR, -DQ) antigens in the general population showed that out of the 17 HLA-A allele groups detected, five main HLA-A allele groups: A*02 (18.42%), A*01 (14.04%), A*23 (14.04%), A*30 (13.16%) and A*29 (12.28%) were the most common identified along other 12 relatively minor allele groups. Twenty three allele groups were observed in the locus B of which B*07 (13.46%) was the most prevalent followed by B*15, B*35, B*08 and B*27 all, with a frequency between 7 to 8%. Three prevalent HLA-C allele groups (C*02: 35.09%, C*07: 20.19% and C*06: 13.6%) were detected. The main HLA class II observed allele groups were: DRB1*13 (27.42%), DRB1*03 (24.73%), DRB1*11 (13.98%), DQB1*03 (36.03%), DQB1*02 (22.06%) and DQB1*05 (18.8%). Except for few haplotype in class I (A*02-B*07: 4.45%, A*02-C02: 10%, A*23-C*02: 8.8%, B*07-C*02: 8.8%, B*15-C*02: 8.8%) and in class II (DRB1*13-DQB1*06: 11.94%, DRB1*03-DQB1*02:11.19% and DRB1*03-DQB1*03: 10.45%), the majority of locus combination were in the range of 2–3%. A single predominant haplotype C*02-DRB1*03 (16.67%) was found.

Conclusions

These results, in agreement with previous data using different tissues markers, underlined the ethnic heterogeneity of the Mauritanian population.
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