In this study, we aim to unravel the intricate involvement of TLR2, TLR4, TLR3, TLR7, TLR8, and TLR9 in the immunopathogenesis of common variable immunodeficiency—CVID (as PID)—and chronic lymphocytic leukemia—CLL (as SID). Here, TLR7 is linked to common variable immunodeficiency.