We have studied the distribution of HLA-A, -B and DRB1 alleles and haplotypes by sequence specific oligonucleotide amplification in a sample of 125 unrelated healthy Moroccan individuals from Casablanca in Morocco. The city of Casablanca is known of its big ethnic diversity, especially Arabs and Berbers. The most frequent alleles found were: HLA-A*02 (18.4%), -A*01 (11.2%), -A*03 (10.8%), -B*51 (8.06%),-B*44 (7.66%), -B*08 (6.85%), -DRB1*04 (15.98%), DRB1*03 and DRB1*07 (13.92%) and -DRB1*01 (10%). High frequency for five two-locus haplotypes was observed for A*03-B*51 (5%), A*02-DRB1*03 (5.5%), A*02-DRB1*04 and A*01-DRB1*04 (5%) and B*35-DRB1*04 (4%). No predominant haplotype was observed for HLA A-B-DRB1. Our results confirm and extend the current knowledge about genetic pattern of the Moroccan of Casablanca. This study will serve as a reference for further anthropological studies, as well as studies of HLA and disease associations in the Moroccan population.
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