To better understand the roles of inhibitory signals in γδ T cells during the onset of CAD, the proportions of NKG2A+, Tim-3+, PD-1+, and CTLA-4+cells among total γδ T cells, Vδ2+T cells, and Vδ2-T cells were determined. The gene discussed is CTLA4; the disease is coronary artery disorder.