Identification of a new HLA-DPB1 allele,HLA-DPB1*9001.

During routine typing of a potential bone marrow donor, a new HLA DPB1 allele was identified. The new allele, officially named HLA DPB1*9001, differs from HLA DPB1*01011 in the second hypervariable region, where a single nucleotide substitution in position 191 changes the codon 35 from TAC to TTC with a predicted amino acid change from Tyr to Phe.