HLA-B and diffuse large B-cell lymphoma: The total number of HLA-B alleles detected in the control and DLBCL groups were 23 and 21, respectively, with no statistically significant difference in the phenotypic frequency of the HLA molecules between the groups, with the exception of HLA-B*39, the frequency of which was significantly lower in patients with DLBCL compared with controls (Table 2).