CD79A and agammaglobulinemia: We detected a proper humoral and cellular response in 39% of the patients with IEI when analyzing with presence of S-specific IgG antibodies together with specific IgG+ RBD+ MBCs and a positive QuantiFERON SARS-CoV-2 (with the exception of 1 patient with IgG and IgA hypogammaglobulinemia).