CD79A and purpura: Clinical manifestations similar to those in idiopathic IgA vasculitis without FMA showed purpura (100%)25, 26, 27, 28, 29, 30, 31, 32 on the legs in all patients, followed by renal involvement (52% to 80%), abdominal pain (50% to 71.7%), and arthralgia/arthritis (33% to 71.7%); however, these patients revealed a higher complication of intussusception (8.7%) and possibly less IgA vascular deposit than patients with idiopathic IgA vasculitis.29, 30