Haploinsufficiency

Autoinflammatory diseases (AID) are caused by innate immunity dysregulation. AID pathophysiology is only partly understood, especially in the case of unclassified AID. Mast cells (MC) are innate immune cells associated with a spectrum of disease between systemic mastocytosis and mast cell activation syndrome. The implication of MC has been shown in cryopyrin associated periodic syndrome (CAPS).Our aim is to evaluate the involvement of MC in AID by assessing clinical and biological signs of MC activation and studying cutaneous and digestive biopsies.