Using EBV-encoded small RNAs (EBER)-specific probe and phenotypic analysis of CD19+ cells, we found that the White EBV-seropositive patients with IgAN displayed a higher frequency of EBV infection (CD19+ EBER+ cells) compared to non-IgAN patients and White controls (Figure 1A; gating strategy is shown in Figure S1). The gene discussed is CD19; the disease is Epstein-Barr virus infection.