Abstract
We identified a novel HLA-DRB1 allele, named DRB1*1340 by the WHO HLA Nomenclature Committee, in two Brazilian individuals. Typing by polymerase chain reaction using sequence-specific oligonucleotide probes (PCR-SSOP) showed a DRB1*13 allele with an unusual hybridization pattern. DNA sequencing of both strands and comparison of the sequence with previously described DRB1 alleles revealed that the most similar allele is DRB1*1301, from which DRB1*1340 differs by a single nucleotide (T-->A) in exon 2, at position 127, codon 47 (Phe-->Tyr). The sequence received accession number AJ237964 from the EMBL database.
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