Hereditary Angioedema with C1inh Deficiency, also known as hereditary angioneurotic edema with c1 inhibitor deficiency, is related to complement component 4, partial deficiency of and c1 inhibitor deficiency. An important gene associated with Hereditary Angioedema with C1inh Deficiency is SERPING1 (Serpin Family G Member 1). Affiliated tissues include bone and skin.