CD79A and Henoch-Schoenlein purpura: IgAV, also known as allergic purpura, is a leukocyte-breaking vasculitis characterized by abnormal IgA deposition in the blood vessels, gastrointestinal tract and kidneys (López-Mejías et al., 2015) and is currently one of the most common primary glomerulonephritis worldwide (Guo et al., 2022).