Acquired C1 Inhibitor Deficiency.

Acquired C1 Inhibitor Deficiency.:

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Acquired C1 Inhibitor Deficiency.

Immunol Allergy Clin North Am. 2017 Aug;37(3):497-511

Authors: Otani IM, Banerji A

Abstract

Acquired angioedema due to C1-INH deficiency (C1-INH-AAE) can occur when there are acquired (not inherited) deficiencies of C1-INH. A quantitative or functional C1-INH deficiency with negative family history and low C1q is diagnostic of C1-INH-AAE. The most common conditions associated with C1-INH-AAE are autoimmunity and B-cell lymphoproliferative disorders. A diagnosis of C1-INH-AAE can precede a diagnosis of lymphoproliferative disease and confers an increased risk for developing non-Hodgkin lymphoma. Treatment focuses on symptom control with therapies that regulate bradykinin activity (C1-INH concentrate, icatibant, ecallantide, tranexamic acid, androgens) and treatment of any underlying conditions.

PMID: 28687105 [PubMed - in process]

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