Our data showed that the numbers of peripheral γδ T cells were negatively correlated with ESR level (r = −0.410, P = 0.007, Figure 2(b)) and positively correlated with Hb level (r = 0.409, P = 0.007, Figure 2(c)) in SLE patients. The gene discussed is GSTM1; the disease is systemic lupus erythematosus.