In addition, the oligoclonally expanded γδ T cells were distributed in almost all of the TRDV subfamilies in the AML patients with the exception of TRDV1 (6.67 %, 2/30), and the most frequently oligoclonally expanded TRDV subfamilies were TRDV8 (17/30, 56.67 %) and TRDV4 (12/30, 40 %). The gene discussed is TRDV1; the disease is acute myeloid leukemia.