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Characterization of a new HLA-C allele: Cw*1606
V Mas1, I Gimferrer, M T Arias
1Servei d'Immunologia, Institut Clínic d'Infeccions i Immunologia (ICII), Institut d'Investigacions Mèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Barcelona, Spain.
Abstract:
HLA-Cw*16 is a relatively common HLA-C specificity among Caucasoids, with Cw*1601 being the most frequent allele. We report herein the identification by sequence-based typing of a new HLA-Cw*16 allele in a Spanish Caucasoid blood donor. The novel allele, designated Cw*1606, differs from Cw*1601 by two nucleotide changes at positions 361 (T to A) and 368 (A to C) in exon 3, which leads to two amino acid changes from Trp (TGG) to Arg (AGG) and from Tyr (TAT) to Ser (TCT) at codons 97 and 99 in the alpha2 domain, respectively. Sequence comparisons suggest that the new HLA-Cw*1606 variant could have arisen from an intralocus gene conversion event.