Although eTG is considered the main autoantigen in the cutaneous pathology of DH, analysis of diagnostic accuracy of different monoanalyte ELISA tests (eTG, tTG, npG IgA ELISAs) in our previous work [10] indicated anti-tTG IgA as the best choice for serological immunodiagnosis of DH. The gene discussed is TGM2; the disease is dermatitis herpetiformis, familial.