CD4 and generalized anxiety disorder: Among the immune cell types positively associated with GAD, our findings suggest that the occurrence of GAD may increase the levels of FSC-A in granulocytes (β=0.200, 95% CI=0.75~0.91, PFDR=0.191, P=8.35×10-5, Figure 2 and Supplementary Tables 1, 2) and CD4RA in TD CD4+ (β=- 0.150, 95% CI=0.82~1.02, PFDR=0.192, P=0.099, Supplementary Table 2).