Frequency of the HLA-DRB1*0701 genotype in patients with monoclonal TCRαβ⁺/CD4⁺/NKa⁺/CD8^−/+d T-LGL lymphocytosis grouped according to the expanded TCR-Vβ family. NI indicates that the exact TCR-Vβ family expanded was not identified with the panel of anti–TCR-Vβ MAbs used.