Identification of the novel HLA-C allele Cw*0751.

We report the novel HLA-Cw allele HLA-Cw*0751. The allele was identified during routine sequence-based typing in our laboratory. The novel allele is identical to Cw*07020101 except for a single nucleotide change in codon 90.2 in position 268. HLA-Cw*0751 allele possesses an adenine at position 268 in exon 2, while HLA-Cw*07020101 has a cytosine at this position. Although this substitution does not change serologic reactivity of HLA-Cw7 molecule, it changes the amino acid at codon 90 from an aspartic acid to an alanine. Aspartic acid is polar and acidic, while alanine is non-polar and neutral.