IGHA1 and glomerulonephritis: Another study evaluated the relevance of cytokines and immune globulin with glomerulonephritis in IgAV children and observed IgA1 levels in serum galactose deficiency and IgA, IgG, IgM, IL-6, IL-8, and IL-10 complex levels in urine were predictors of glomerulonephritis in IgAV children (Berthelot et al., 2018).