Brief Report: Involvement of TNFRSF11A Molecular Defects in Autoinflammatory Disorders. Issue 9 (September 2014)

• Record Type: Journal Article
• Authors: Jéru, Isabelle; Cochet, Emmanuelle; Duquesnoy, Philippe; Hentgen, Véronique; Copin, Bruno; Mitjavila‐Garcia, Maria Teresa; Sheykholeslami, Shayan; Le Borgne, Gaëlle; Dastot‐Le Moal, Florence; Malan, Valérie; Karabina, Sonia; Mahevas, Mathieu; Chantot‐Bastaraud, Sandra; Lecron, Jean‐Claude; Faivre, Laurence; Amselem, Serge
• Is Part Of: Arthritis & rheumatology. Volume 66:Issue 9(2014)
• Page Start: 2621
• Page End: 2627
• Publication Date: 2014-09
• Subjects: Arthritis -- Periodicals; Rheumatism -- Periodicals; 616.72
• DOI: 10.1002/art.38727
• Languages: English
• ISSNs: 2326-5191

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="art38727-sec-0001" sec-type="section"> <title>Objective</title> <p>Autoinflammatory disorders are caused by a primary dysfunction of the innate immune system. Among these disorders are hereditary recurrent fevers, which are characterized by recurrent episodes of fever and inflammatory manifestations affecting multiple tissues. Hereditary recurrent fevers often lack objective diagnostic criteria, thereby hampering the identification of disease‐causing genes. This study was undertaken to identify a gene responsible for hereditary recurrent fevers.</p> </sec> <sec id="art38727-sec-0002" sec-type="section"> <title>Methods</title> <p>Copy number variations and point mutations were sought by array‐comparative genomic hybridization and polymerase chain reaction sequencing, respectively. Serum cytokine levels were measured using Luminex technology. The effect of <italic>TNFRSF11A</italic> molecular defects on NF‐κB signaling in cells expressing wild‐type and mutated forms of the receptor was evaluated by luciferase assay.</p> </sec> <sec id="art38727-sec-0003" sec-type="section"> <title>Results</title> <p>A patient with multiple congenital anomalies and hereditary recurrent fever was found to carry a de novo heterozygous complex chromosomal rearrangement encompassing a duplication of <italic>TNFRSF11A</italic>, a gene known to regulate fever in rodents. We also identified a heterozygous frameshift mutation (p.Met416Cysfs*110) in <italic>TNFRSF11A</italic> in a mother and daughter with isolated hereditary recurrent fever. This mutation was associated with increased secretion of several inflammatory cytokines (tumor necrosis factor α [TNFα], interleukin‐18 [IL‐18], IL‐1 receptor antagonist, interferon‐γ) and altered the biologic effects of the receptor on NF‐κB signaling. The disease in the patients described herein exhibits striking clinical similarities to TNF receptor–associated periodic syndrome, another hereditary recurrent fever involving a gene of the same family (<italic>TNFRSF1A</italic>).</p> </sec> <sec id="art38727-sec-0004" sec-type="section"> <title>Conclusion</title> <p>The involvement of <italic>TNFRSF11A</italic> in hereditary recurrent fever highlights the key role of this receptor in innate immunity. The present results also suggest that <italic>TNFRSF11A</italic> screening could serve as a new diagnostic test for autoinflammatory disorders.</p> </sec> </abstract>