The fecal samples for 16S ribosomal RNA (rRNA) gene sequencing of 55 patients with IgAN and 24 patients with IgAV-N.
Whether IgA vasculitis nephritis (IgAV-N) and IgA nephropathy (IgAN) are two presentations of one disease process is still controversial. This study investigated the similarities between IgAN and IgAV-N from the perspective of renal outcome and intestinal flora.