CD79A and cranioectodermal dysplasia: Children with CeD and polyautoimmunity expressed higher levels of H/K ATPase IgA and IgG and MDA5 IgG compared to those with CeD alone.<h4>Conclusions</h4>Use of multiplex antigen arrays in patients with and without polyautoimmunity is a valuable tool to identify known and potentially novel disease-antigens.