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Tissue Antigens. 2006 Dec;68(6):518-20.

Identification of nine new HLA class I alleles in volunteers from the Singapore stem cell donor registries.

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  • 1Department of Pediatrics, Georgetown University Medical Center, Washington, DC, USA.


Based on unusual probe hybridization patterns, two human leukocyte antigen (HLA)-A, five HLA-B, and two HLA-C alleles (A*240208, A*3211Q; B*1822, B*3938Q, B*4606, B*4607N, B*5139; Cw*0321, Cw*0734) were identified in individuals from the Singapore Bone Marrow Donor Program and Singapore Cord Blood Bank. Eight of the nine alleles encode amino acid substitutions altering the antigen-binding region including three alleles with changes altering a cysteine at codon 164 (A*3211Q, B*3938Q, B*4607N). This substitution either eliminates a key disulfide bond or results in a stop codon, both likely affecting the expression of the HLA molecules. Only one allele (A*240208) carries a synonymous substitution.

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