We found a significantly higher proportion of CD8+ Vδ1+ γδ T cells in CMV/CVID patients (64 ± 7.9%) compared to CVID patients (34 ± 5.4%), and both CMV− and CMV+ healthy individuals (16 ± 3.0% and 24 ± 4.4%, respectively) (Fig. 4d). This evidence concerns the gene CD8A and common variable immunodeficiency.