Notably, the 2 non-neutralizing COVID-19 IgA samples also exhibited the lowest IgA endpoint titers (COV121, COV130; mean IgA endpoint titers of 19 and 17, respectively), while the 6 neutralizing samples exhibited high Spike-specific IgA binding titers (Figs 1c and 4c). The gene discussed is CD79A; the disease is COVID-19.