 Immunological studies revealed findings that are similar to those of coeliac disease in terms of autoantigens.The main autoantigen of dermatitis herpetiformis is epidermal transglutaminase (eTG), a cytosolic enzyme involved in cell envelope formation during keratinocyte differentiation.Various research studies have pointed out different potential factors that may play a larger or smaller role in the development of dermatitis herpetiformis.