Histopathologically, non‐IgA vasculitis presents as leukocytoclastic vasculitis of the small vessel, especially prominent in the postcapillary venules, while direct immunofluorescence (DIF) typically shows a deposition of IgM or complement factors, with IgG deposition being less frequent.5, 6. The gene discussed is CD40LG; the disease is Henoch-Schoenlein purpura.