Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8721297 | Clinical Immunology | 2018 | 25 Pages |
Abstract
There is scarce literature about autoinflammation in syndromic patients. We describe a patient who, in addition to psychomotor and growth delay, presented with fevers, neutrophilic dermatosis, and recurrent orogenital ulcers. Comparative Genomic Hybridization (CGH) array permitted to identify a 13.13Mb deletion on chromosome 6, encompassing 53 genes, and including TNFAIP3 gene (A20). A20 is a potent inhibitor of the NF-kB signalling pathway and restricts inflammation via its deubiquitinase activity. Western blotting and immunoprecipitation assays showed decreased A20 expression and increased phosphorylation of p65 and IkBa. Patient's cells displayed increased levels of total K63-linked ubiquitin and increased levels of ubiquitinated RIP and NEMO after stimulation with TNF. We describe the molecular characterization of an autoinflammatory disease due to a large chromosomal deletion and review the phenotypes of patients with A20 haploinsufficiency. CGH arrays should be the first diagnostic method for comprehensive analysis of patients with syndromic features and immune dysregulation.
Keywords
FMFNod-like receptor family, pyrin domain containing 3TNFAIP3IPEXcomparative genomic hybridization (CGH)NLRP3ESIDMLPANF-kBENTHuman leukocyte antigenHLAEuropean Society for ImmunodeficienciesEBVBehçet’s diseaseautoinflammatory diseasesFamilial Mediterranean fevermultiplex ligation-dependent probe amplificationTrapsChromosome deletionAlpsoral ulcerautoimmune lymphoproliferative syndromenuclear factor kappa-light-chain-enhancer of activated B cellsEpstein-Barr virus
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Authors
Clara Franco-Jarava, Hongying Wang, Andrea Martin-Nalda, de la Sierra Daniel Alvarez, Marina GarcÃa-Prat, Domingo Bodet, Vicenç GarcÃa-Patos, Alberto Plaja, Francesc Rudilla, Victor Rodriguez-Sureda, Laura GarcÃa-Latorre, Ivona Aksentijevich,