CD8A and IgA glomerulonephritis: Most immune cell types exhibited increased infiltration levels in IgA nephropathy, comprising CD8 T cells, follicular helper T cells, gamma delta T cells, resting NK cells, activated NK cells, M1 macrophages, M2 macrophages, resting dendritic cells, activated dendritic cells, endothelial cells, and fibroblasts, consistent with previous research (Chen et al., 2021; Tang et al., 2021).