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Parentelli AS, Boursier G, Cuisset L, Georgin-Lavialle S. [Genetic mosaicism in Systemic Auto-Inflammatory Diseases: A review of the literature]. Rev Med Interne 2024:S0248-8663(24)00566-6. [PMID: 38762439 DOI: 10.1016/j.revmed.2024.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 04/07/2024] [Accepted: 05/02/2024] [Indexed: 05/20/2024]
Abstract
Systemic auto-inflammatory diseases (SAIDs) are disorders associated with deregulation of innate immunity in which patients present classically with systemic inflammatory manifestations, in particular fever, skin-mucosal rashes, arthromyalgia and abdominal pain, with an increase in blood biomarkers of inflammation. At the time of their discovery, these diseases were associated with constitutional mutations in genes encoding proteins involved in innate immunity, and it was then considered that they had to begin in childhood. This dogma of constitutional mutations in SAIDs is no longer so unquestionable, since 2005 several cases of mosaicism have been reported in the literature, initially in cryopyrinopathies, but also in other SAIDs in patients with obvious clinical phenotypes and late onset of disease expression, in particular in the VEXAS syndrome (Vacuoles, E1 enzyme, X-linked, Autoinflammatory, Somatic Syndrome) and very recently in MEVF gene. Next-generation sequencing techniques are more sensitive than Sanger for detecting mosaicisms. So, when a clinical diagnosis seems obvious but no constitutional mutation is found by low-depth genetic analysis, it is useful to discuss with expert geneticists whether to consider another genetic approach in a child or an adult. This modifies the situations in which clinicians can evoke these diseases. This review provides an update on mosaicism in SAIDs.
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Affiliation(s)
- A-S Parentelli
- Service de pédiatrie, CHU Félix-Guyon, allée des Topazes, 97400 Saint-Denis, Réunion.
| | - G Boursier
- Service de génétique moléculaire et cytogénomique, laboratoire de génétique des maladies rares et auto-inflammatoires, CHU de Montpellier, université de Montpellier, 371, avenue du Doyen-Gaston-Giraud, 34295 Montpellier cedex 5, France; Centre de référence des maladies auto-inflammatoires rares et de l'amylose inflammatoire (CEREMAIA), hôpital Tenon, Assistance publique-Hôpitaux de Paris, 4, rue de la Chine, 75020 Paris, France
| | - L Cuisset
- Service de médecine génomique des maladies de système et d'organe, hôpital Cochin, Assistance publique-Hôpitaux de Paris, université Paris Cité, 27, rue du Faubourg-Saint-Jacques, 75014 Paris, France
| | - S Georgin-Lavialle
- Service de médecine interne, hôpital Tenon, Assistance publique-Hôpitaux de Paris, Sorbonne université, 4, rue de la Chine, 75020 Paris, France; Centre de référence des maladies auto-inflammatoires rares et de l'amylose inflammatoire (CEREMAIA), hôpital Tenon, Assistance publique-Hôpitaux de Paris, 4, rue de la Chine, 75020 Paris, France
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Terré A, Vautier M, Kahn JE, Georgin-Lavialle S, Boursier G. Efficacy of canakinumab for mosaic tumor necrosis factor receptor associated periodic syndrome. Eur J Intern Med 2024; 123:156-158. [PMID: 38307733 DOI: 10.1016/j.ejim.2024.01.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/22/2024] [Accepted: 01/25/2024] [Indexed: 02/04/2024]
Affiliation(s)
- Alexandre Terré
- Department of Internal Medicine, Sorbonne University, AP-HP, Tenon hospital, Centre de référence des maladies auto-inflammatoires et des amyloses d'origine inflammatoire (CEREMAIA), 20, rue de la Chine, GRC-28, Paris 75020, France
| | - Mathieu Vautier
- Department of Internal Medicine and Clinical Immunology France, AP-HP, Hôpital Pitié Salpetrière, Centre national de référence maladies Autoimmunes Systémiques rares, Centre national de référence maladies Autoinflammatoires et Amylose, and Inflammation-Immunopathology-Biotherapy Department (DMU i3), Sorbonne Universités, Paris, France
| | - Jean-Emmanuel Kahn
- Department of Internal Medicine, Paris Saclay University, AP-HP, Ambroise Paré Hospital, Boulogne Billancourt, France
| | - Sophie Georgin-Lavialle
- Department of Internal Medicine, Sorbonne University, AP-HP, Tenon hospital, Centre de référence des maladies auto-inflammatoires et des amyloses d'origine inflammatoire (CEREMAIA), 20, rue de la Chine, GRC-28, Paris 75020, France.
| | - Guilaine Boursier
- Laboratoire de Génétique des Maladies rares et autoinflammatoires, Service de Génétique moléculaire et cytogénomique, CHU Montpellier, Univ Montpellier, CeRéMAIA, Montpellier, France
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Putnam CD, Broderick L, Hoffman HM. The discovery of NLRP3 and its function in cryopyrin-associated periodic syndromes and innate immunity. Immunol Rev 2024; 322:259-282. [PMID: 38146057 PMCID: PMC10950545 DOI: 10.1111/imr.13292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 12/27/2023]
Abstract
From studies of individual families to global collaborative efforts, the NLRP3 inflammasome is now recognized to be a key regulator of innate immunity. Activated by a panoply of pathogen-associated and endogenous triggers, NLRP3 serves as an intracellular sensor that drives carefully coordinated assembly of the inflammasome, and downstream inflammation mediated by IL-1 and IL-18. Initially discovered as the cause of the autoinflammatory spectrum of cryopyrin-associated periodic syndrome (CAPS), NLRP3 is now also known to play a role in more common diseases including cardiovascular disease, gout, and liver disease. We have seen cohesion in results from clinical studies in CAPS patients, ex vivo studies of human cells and murine cells, and in vivo murine models leading to our understanding of the downstream pathways, cytokine secretion, and cell death pathways that has solidified the role of autoinflammation in the pathogenesis of human disease. Recent advances in our understanding of the structure of the inflammasome have provided ways for us to visualize normal and mutant protein function and pharmacologic inhibition. The subsequent development of targeted therapies successfully used in the treatment of patients with CAPS completes the bench to bedside translational loop which has defined the study of this unique protein.
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Affiliation(s)
- Christopher D. Putnam
- Department of Medicine, University of California, San Diego, La Jolla, California, USA
| | - Lori Broderick
- Division of Allergy, Immunology & Rheumatology, Department of Pediatrics, University of California, San Diego, La Jolla, California, USA
- Rady Children’s Hospital, San Diego, California, USA
| | - Hal M. Hoffman
- Department of Medicine, University of California, San Diego, La Jolla, California, USA
- Division of Allergy, Immunology & Rheumatology, Department of Pediatrics, University of California, San Diego, La Jolla, California, USA
- Rady Children’s Hospital, San Diego, California, USA
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4
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Chen KR. Cutaneous vasculitis in autoinflammatory diseases. J Dermatol 2024; 51:150-159. [PMID: 37955334 DOI: 10.1111/1346-8138.17030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 10/24/2023] [Indexed: 11/14/2023]
Abstract
Autoinflammatory diseases (AIDs) characterized by recurrent episodes of localized or systemic inflammation are disorders of the innate immune system. Skin lesions are commonly found in AIDs and cutaneous vasculitis can coexist with AIDs and even present as the most striking feature. This review aims to focus on the frequent cutaneous vasculitis association in three monogenic AIDs including familial Mediterranean fever (FMF), deficiency of adenosine deaminase type 2 (DADA2), and the recently identified adult-onset VEXAS (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic) syndrome. Cutaneous vasculitis in FMF is characterized by: (1) small-vessel vasculitis similar to IgA vasculitis with palpable purpura but increased intussusception complication and less vascular IgA deposit, and (2) cutaneous arteritis-like vasculitis presenting as subcutaneous nodules most often with higher glomerular involvement. DADA2 has a wide spectrum of clinical presentations ranging from fatal systemic vasculitis with multiple strokes, especially in pediatric patients, to limited cutaneous disease in middle-aged patients. DADA2 shares similar clinical and histopathological features with polyarteritis nodosa (PAN). As a result, DADA2 is commonly initially misdiagnosed as childhood PAN. Livedo racemosa reveals the most common cutaneous manifestation of cutaneous vasculitis in patients with DADA2. VEXAS syndrome is a life-threatening disease. A diagnosis of VEXAS syndrome should be strongly considered or could be made in patients with skin lesions characterized by Sweet syndrome-like eruption, livedo racemosa, concomitant relapsing polychondritis, deep venous thrombosis, pulmonary involvement, and progressive hematologic abnormalities such as myelodysplastic syndrome with a unique finding of cytoplasmic vacuoles in myeloid and erythroid precursor cells from bone marrow aspirate smear. As skin involvement is common in AIDs and may present as the most frequent manifestation, especially in DADA2 (70% to 90%) and VEXAS syndrome (83% to 91%), dermatologists play a crucial role in contributing to the early diagnosis of these AIDs with early initiation of the appropriate therapy to avoid progressing fatal outcomes.
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Affiliation(s)
- Ko-Ron Chen
- Meguro Chen Dermatology Clinic, Tokyo, Japan
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5
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Gattorno M, Obici L, Penadés IC, Kallinich T, Benseler S, Dekker E, Lévy J, De Benedetti F, Lachmann H. Long-Term Efficacy and Safety of Canakinumab in Patients With Tumor Necrosis Factor Receptor-Associated Periodic Syndrome: Results From a Phase III Trial. Arthritis Rheumatol 2024; 76:304-312. [PMID: 37668289 DOI: 10.1002/art.42695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 07/19/2023] [Accepted: 09/01/2023] [Indexed: 09/06/2023]
Abstract
OBJECTIVE We aimed at assessing efficacy, safety, and tolerability of canakinumab in patients with tumor necrosis factor receptor-associated periodic syndrome (TRAPS) during a 72-week long-term, open-label extension of the CLUSTER study. METHODS Patients received open-label canakinumab 150 or 300 mg, either every 4 weeks (q4w) or every 8 weeks, with up-titration permitted after on-treatment flares (maximum dose: 300 mg q4w). Efficacy assessments included physician global assessment of disease activity, number of flares, and serum C-reactive protein (CRP) and serum amyloid A protein (SAA) levels. Adverse events were also reported. Results are described for the overall population and according to the cumulative dose of canakinumab adjusted for body weight (<36 mg/kg or ≥36 mg/kg). RESULTS Of 53 patients entering the final phase (epoch 4) of CLUSTER, 51 completed the treatment. At the end of epoch 4, >94% of patients achieved no or minimal disease activity. Most patients had either no (69.8%) or one flare (24.5%), whereas at baseline, the median number of flares was 9.0 per year. Median CRP levels remained at <10 mg/L. Median SAA concentrations were largely unchanged, with medians of 11.5 mg/L and 14.5 mg/L in the <36 mg/kg and ≥36 mg/kg groups, respectively, at the end of the study. No unexpected safety findings were identified. CONCLUSION Control of disease activity, with low flare incidence, was maintained with long-term canakinumab treatment in patients with TRAPS during the 72-week final epoch of the CLUSTER study, with no new safety findings.
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Affiliation(s)
| | - Laura Obici
- IRCCS Policlinico San Matteo Foundation, Pavia, Italy
| | | | - Tilmann Kallinich
- Charité Universitätsmedizin Berlin and Deutsches Rheumaforschungszentrum, Berlin, Germany
| | - Susanne Benseler
- Alberta Children's Hospital, University of Calgary, Alberta, Canada
| | | | | | | | - Helen Lachmann
- University College London School of Medicine, London, England
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Mascaro JM, Rodriguez-Pinto I, Poza G, Mensa-Vilaro A, Fernandez-Martin J, Caminal-Montero L, Espinosa G, Hernández-Rodríguez J, Diaz M, Rita-Marques J, Sanmarti R, Castañeda S, Colunga D, Coto-Hernández R, Fanlo P, Elejalde JI, Bujan S, Figueras I, Marco FM, Andrés M, Suárez S, Gonzalez-Garcia A, Fustà-Novell X, Garcia-Belando C, Granados A, Fernandez-Figueras MT, Quilis N, Orriols-Caba M, Gómez de la Torre R, Cid MC, Espígol-Frigolé G, Alvarez-Abella A, Labrador E, Rozman M, Lopez-Guerra M, Castillo P, Alamo-Moreno JR, Gonzalez-Roca E, Plaza S, Fabregat V, Lara R, Vicente-Rabaneda EF, Tejedor-Vaquero S, Magri G, Bonet N, Solis-Moruno M, Cerutti A, Fornas O, Casals F, Yagüe J, Aróstegui JI. Spanish cohort of VEXAS syndrome: clinical manifestations, outcome of treatments and novel evidences about UBA1 mosaicism. Ann Rheum Dis 2023; 82:1594-1605. [PMID: 37666646 PMCID: PMC10646843 DOI: 10.1136/ard-2023-224460] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/14/2023] [Indexed: 09/06/2023]
Abstract
BACKGROUND The vacuoles, E1-enzyme, X linked, autoinflammatory and somatic (VEXAS) syndrome is an adult-onset autoinflammatory disease (AID) due to postzygotic UBA1 variants. OBJECTIVES To investigate the presence of VEXAS syndrome among patients with adult-onset undiagnosed AID. Additional studies evaluated the mosaicism distribution and the circulating cytokines. METHODS Gene analyses were performed by both Sanger and amplicon-based deep sequencing. Patients' data were collected from their medical charts. Cytokines were quantified by Luminex. RESULTS Genetic analyses of enrolled patients (n=42) identified 30 patients carrying UBA1 pathogenic variants, with frequencies compatible for postzygotic variants. All patients were male individuals who presented with a late-onset disease (mean 67.5 years; median 67.0 years) characterised by cutaneous lesions (90%), fever (66.7%), pulmonary manifestations (66.7%) and arthritis (53.3%). Macrocytic anaemia and increased erythrocyte sedimentation rate and ferritin were the most relevant analytical abnormalities. Glucocorticoids ameliorated the inflammatory manifestations, but most patients became glucocorticoid-dependent. Positive responses were obtained when targeting the haematopoietic component of the disease with either decitabine or allogeneic haematopoietic stem cell transplantation. Additional analyses detected the UBA1 variants in both haematopoietic and non-haematopoietic tissues. Finally, analysis of circulating cytokines did not identify inflammatory mediators of the disease. CONCLUSION Thirty patients with adult-onset AID were definitively diagnosed with VEXAS syndrome through genetic analyses. Despite minor interindividual differences, their main characteristics were in concordance with previous reports. We detected for the first time the UBA1 mosaicism in non-haematopoietic tissue, which questions the previous concept of myeloid-restricted mosaicism and may have conceptual consequences for the disease mechanisms.
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Affiliation(s)
- Jose Manuel Mascaro
- Department of Dermatology, Hospital Clínic, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
| | | | - Gabriela Poza
- Department of Internal Medicine, Hospital Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Anna Mensa-Vilaro
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- Department of Immunology, Hospital Clínic, Barcelona, Spain
| | | | - Luis Caminal-Montero
- Department of Internal Medicine, Hospital Universitario Central de Asturias, Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - Gerard Espinosa
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
- Department of Autoimmune Diseases, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Jose Hernández-Rodríguez
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
- Department of Autoimmune Diseases, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Marina Diaz
- Department of Haematology, Hospital Clínic, Barcelona, Spain
| | - Joana Rita-Marques
- Department of Internal Medicine, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Raimon Sanmarti
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
- Department of Rheumatology, Hospital Clínic, Barcelona, Spain
| | - Santos Castañeda
- Department of Rheumatology, Hospital Universitario La Princesa, Madrid, Spain
- Instituto de Investigaciones Sanitarias Princesa (IIS-Princesa), Madrid, Spain
- Cátedra UAM-Roche, EPID-Future, Department of Medicine, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | - Dolores Colunga
- Department of Internal Medicine, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Rubén Coto-Hernández
- Department of Internal Medicine, Hospital Universitario Central de Asturias, Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias, Oviedo, Spain
| | - Patricia Fanlo
- Department of Internal Medicine, Hospital Universitario de Navarra, Pamplona, Spain
| | | | - Segundo Bujan
- Department of Internal Medicine, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Ignasi Figueras
- Department of Dermatology, Hospital de Bellvitge, Barcelona, Spain
| | - Francisco Manuel Marco
- Department of Immunology, Hospital General Universitario de Alicante Dr Balmis, Alicante, Spain
- Alicante Institute for Health and Biomedical Research, Alicante, Spain
| | - Mariano Andrés
- Alicante Institute for Health and Biomedical Research, Alicante, Spain
- Seccion de Reumatologia, Hospital General Universitario de Alicante, Alicante, Spain
- Department of Clinic Medicine, Universidad Miguel Hernandez de Elche, Elche, Spain
| | - Silvia Suárez
- Department of Internal Medicine, Hospital Valle del Nalón, Langreo, Spain
| | - Andres Gonzalez-Garcia
- Systemic Autoimmune Diseases Unit, Department of Internal Medicine, Hospital Universitario Ramón y Cajal | IRYCIS, Madrid, Spain
| | | | - Clara Garcia-Belando
- Department of Rheumatology, Hospital Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Ana Granados
- Department of Internal Medicine, Hospital Universitari Parc Taulí, Sabadell, Spain
| | | | - Neus Quilis
- Department of Rheumatology, Hospital Universitari de Vinalopo, Elche, Spain
| | - Maria Orriols-Caba
- Department of Internal Medicine, Hospital comarcal Alt Penedès, Consorci Sanitari Alt Penedès-Garraf, Vilafranca del Penedès, Spain
| | | | - Maria Cinta Cid
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
- Department of Autoimmune Diseases, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Georgina Espígol-Frigolé
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
- Department of Autoimmune Diseases, Hospital Clinic de Barcelona, Barcelona, Spain
| | | | | | - Maria Rozman
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
- Department of Haematology, Hospital Clínic, Barcelona, Spain
| | - Monica Lopez-Guerra
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- Department of Pathology, Hospital Clínic, Barcelona, Spain
| | - Paola Castillo
- Department of Pathology, Hospital Clínic, Barcelona, Spain
| | | | - Eva Gonzalez-Roca
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- Department of Immunology, Hospital Clínic, Barcelona, Spain
| | - Susana Plaza
- Department of Immunology, Hospital Clínic, Barcelona, Spain
| | | | - Rocio Lara
- Department of Immunology, Hospital Clínic, Barcelona, Spain
| | - Esther F Vicente-Rabaneda
- Department of Rheumatology, Hospital Universitario La Princesa, Madrid, Spain
- Instituto de Investigaciones Sanitarias Princesa (IIS-Princesa), Madrid, Spain
- Department of Medicine, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain
| | | | - Giuliana Magri
- Institut Hospital del Mar d'Investigacions Mèdiques, Barcelona, Spain
- Immunology Unit, Department of Biomedical Sciences, Faculty of Medicine and Health Science, University of Barcelona, Barcelona, Spain
| | - Nuria Bonet
- Genomics Core Facility, Departament de Medicina i Ciències de la Vida, Universitat Pompeu Fabra, Barcelona, Spain
| | - Manuel Solis-Moruno
- Genomics Core Facility, Departament de Medicina i Ciències de la Vida, Universitat Pompeu Fabra, Barcelona, Spain
| | - Andrea Cerutti
- Hospital del Mar Medical Research Institute, PRBB, Barcelona, Spain
- Catalan Institute for Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Oscar Fornas
- Flow Cytometry Unit, Universitat Pompeu Fabra - Center of Genomic Regulation, Barcelona, Spain
| | - Ferran Casals
- Departament de Genètica, Microbiologia i Estadística, Faculty of Biology, University of Barcelona, Barcelona, Spain
- Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Barcelona, Spain
| | - Jordi Yagüe
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
- Department of Immunology, Hospital Clínic, Barcelona, Spain
| | - Juan I Aróstegui
- Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
- School of Medicine, Universitat de Barcelona, Barcelona, Spain
- Department of Immunology, Hospital Clínic, Barcelona, Spain
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Zhang J, Lee PY, Aksentijevich I, Zhou Q. How to Build a Fire: The Genetics of Autoinflammatory Diseases. Annu Rev Genet 2023; 57:245-274. [PMID: 37562411 DOI: 10.1146/annurev-genet-030123-084224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Systemic autoinflammatory diseases (SAIDs) are a heterogeneous group of disorders caused by excess activation of the innate immune system in an antigen-independent manner. Starting with the discovery of the causal gene for familial Mediterranean fever, more than 50 monogenic SAIDs have been described. These discoveries, paired with advances in immunology and genomics, have allowed our understanding of these diseases to improve drastically in the last decade. The genetic causes of SAIDs are complex and include both germline and somatic pathogenic variants that affect various inflammatory signaling pathways. We provide an overview of the acquired SAIDs from a genetic perspective and summarize the clinical phenotypes and mechanism(s) of inflammation, aiming to provide a comprehensive understanding of the pathogenesis of autoinflammatory diseases.
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Affiliation(s)
- Jiahui Zhang
- Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Pui Y Lee
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ivona Aksentijevich
- Inflammatory Disease Section, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA;
| | - Qing Zhou
- Life Sciences Institute, Zhejiang University, Hangzhou, China
- Liangzhu Laboratory, Zhejiang University Medical Center, Hangzhou, China;
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8
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Burleigh A, Omoyinmi E, Papadopoulou C, Al-Abadi E, Hong Y, Price-Kuehne F, Moraitis E, Titheradge H, Montesi F, Xu D, Eleftheriou D, Brogan P. Genetic testing of Behçet's disease using next-generation sequencing to identify monogenic mimics and HLA-B*51. Rheumatology (Oxford) 2023:kead628. [PMID: 38006337 DOI: 10.1093/rheumatology/kead628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/23/2023] [Accepted: 10/31/2023] [Indexed: 11/27/2023] Open
Abstract
OBJECTIVE Several monogenic autoinflammatory disorders and primary immunodeficiencies can present early in life with features that may be mistaken for Behçet's disease (BD). We aimed to develop a genetic analysis workflow to identify rare monogenic BD-like diseases and establish the contribution of HLA haplotype in a cohort of patients from the UK. METHODS Patients with clinically suspected BD were recruited from four BD specialist care centres in the UK. All participants underwent whole exome sequencing (WES), and genetic analysis thereafter by 1. examining genes known to cause monogenic immunodeficiency, autoinflammation or vasculitis by virtual panel application; 2. scrutiny of variants prioritised by Exomiser using Human Phenotype Ontology (HPO); 3. identification of copy number variants using ExomeDepth; and 4. HLA-typing using OptiType. RESULTS Thirty-one patients were recruited: median age 15 (4-52), and median disease onset age 5 (0-20). Nine/31 (29%) patients had monogenic disease mimicking BD: 5 cases of Haploinsufficiency of A20 with novel TNFAIP3 variants (p.T76I, p.M112Tfs*8, p.S548Dfs*128, p.C657Vfs*14, p.E661Nfs*36); 1 case of ISG15 deficiency with a novel nonsense variant (ISG15:p.Q16X) and 1p36.33 microdeletion; 1 case of Common variable immune deficiency (TNFRSF13B:p.A181E); and 2 cases of TNF receptor associated periodic syndrome (TNFRSF1A:p.R92Q). Of the remaining 22 patients, 8 (36%) were HLA-B*51 positive. CONCLUSION We describe a novel genetic workflow for BD, which can efficiently detect known and potentially novel monogenic forms of BD, whilst additionally providing HLA-typing. Our results highlight the importance of genetic testing before BD diagnosis, since this has impact on choice of therapy, prognosis, and genetic counselling.
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Affiliation(s)
- Alice Burleigh
- Infection, Immunity and Inflammation, University College London Great Ormond Street Institute of Child Health, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at University College London, London, UK
| | - Ebun Omoyinmi
- Infection, Immunity and Inflammation, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Charalampia Papadopoulou
- Paediatric Rheumatology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Eslam Al-Abadi
- Childhood Arthritis and Rheumatic Diseases Unit, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, UK
| | - Ying Hong
- Infection, Immunity and Inflammation, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Fiona Price-Kuehne
- Infection, Immunity and Inflammation, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Elena Moraitis
- Paediatric Rheumatology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Hannah Titheradge
- Clinical Genetics, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham, UK
- Clinical Sciences Department, University of Birmingham, Birmingham, UK
| | - Francesca Montesi
- Infection, Immunity and Inflammation, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Diane Xu
- Infection, Immunity and Inflammation, University College London Great Ormond Street Institute of Child Health, London, UK
| | - Despina Eleftheriou
- Infection, Immunity and Inflammation, University College London Great Ormond Street Institute of Child Health, London, UK
- Centre for Adolescent Rheumatology Versus Arthritis at University College London, London, UK
- Paediatric Rheumatology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Paul Brogan
- Infection, Immunity and Inflammation, University College London Great Ormond Street Institute of Child Health, London, UK
- Paediatric Rheumatology, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
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Assrawi E, Louvrier C, El Khouri E, Delaleu J, Copin B, Dastot-Le Moal F, Piterboth W, Legendre M, Karabina SA, Grateau G, Amselem S, Giurgea I. Mosaic variants in TNFRSF1A: an emerging cause of tumour necrosis factor receptor-associated periodic syndrome. Rheumatology (Oxford) 2022; 62:473-479. [PMID: 35640127 DOI: 10.1093/rheumatology/keac274] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/24/2022] [Accepted: 04/24/2022] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE To identify the molecular basis of a systemic autoinflammatory disorder (SAID) evocative of TNF receptor-associated periodic syndrome (TRAPS). METHODS (i) Deep next generation sequencing (NGS) through a SAID gene panel; (ii) variant allele distribution in peripheral blood subpopulations; (iii) in silico analyses of mosaic variants using TNF receptor superfamily 1A (TNFRSF1A) crystal structure; (iv) review of the very rare TNFRSF1A mosaic variants reported previously. RESULTS In a 36-year-old man suffering from recurrent fever for 12 years, high-depth NGS revealed a TNFRSF1A mosaic variant, c.176G>A p.(Cys59Tyr), which Sanger sequencing failed to detect. This mosaic variant displayed a variant allele fraction of 14% in whole blood; it affects both myeloid and lymphoid lineages. p.(Cys59Tyr), a recurrent germline pathogenic variant, affects a crucial cysteine located in the first cysteine-rich domain (CRD1) and involved in a disulphide bridge. Introduction of a tyrosine at this position is expected to disrupt the CRD1 structure. Review of the three previously reported TNFRSF1A mosaic variants revealed that they are all located in a small region of CRD2 and that germinal cells can be affected. CONCLUSION This study expands the localization of TNFRSF1A mosaic variants to the CRD1 domain. Noticeably, residues involved in germline TNFRSF1A mutational hot spots can also be involved in post-zygotic mutational events. Including our study, only four patients have been thus far reported with TNFRSF1A mosaicism, highlighting the need for a high-depth NGS-based approach to avoid the misdiagnosis of TRAPS. Genetic counselling has to consider the potential occurrence of TNFRSF1A mosaic variants in germinal cells.
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Affiliation(s)
- Eman Assrawi
- Sorbonne Université, INSERM, Maladies Génétiques d'Expression Pédiatrique
| | - Camille Louvrier
- Sorbonne Université, INSERM, Maladies Génétiques d'Expression Pédiatrique.,Unité Fonctionnelle de Génétique Moléculaire, Assistance Publique-Hôpitaux de Paris, Hôpital Trousseau
| | - Elma El Khouri
- Sorbonne Université, INSERM, Maladies Génétiques d'Expression Pédiatrique
| | - Jérémie Delaleu
- Sorbonne Université, INSERM, Maladies Génétiques d'Expression Pédiatrique
| | - Bruno Copin
- Unité Fonctionnelle de Génétique Moléculaire, Assistance Publique-Hôpitaux de Paris, Hôpital Trousseau
| | - Florence Dastot-Le Moal
- Unité Fonctionnelle de Génétique Moléculaire, Assistance Publique-Hôpitaux de Paris, Hôpital Trousseau
| | - William Piterboth
- Unité Fonctionnelle de Génétique Moléculaire, Assistance Publique-Hôpitaux de Paris, Hôpital Trousseau
| | - Marie Legendre
- Unité Fonctionnelle de Génétique Moléculaire, Assistance Publique-Hôpitaux de Paris, Hôpital Trousseau
| | - Sonia A Karabina
- Sorbonne Université, INSERM, Maladies Génétiques d'Expression Pédiatrique
| | - Gilles Grateau
- Sorbonne Université, INSERM, Maladies Génétiques d'Expression Pédiatrique.,Service de Médecine Interne, Assistance Publique-Hôpitaux de Paris, Hôpital Tenon, Paris, France
| | - Serge Amselem
- Sorbonne Université, INSERM, Maladies Génétiques d'Expression Pédiatrique.,Unité Fonctionnelle de Génétique Moléculaire, Assistance Publique-Hôpitaux de Paris, Hôpital Trousseau
| | - Irina Giurgea
- Sorbonne Université, INSERM, Maladies Génétiques d'Expression Pédiatrique.,Unité Fonctionnelle de Génétique Moléculaire, Assistance Publique-Hôpitaux de Paris, Hôpital Trousseau
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10
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Al-Hakim A, Mistry A, Savic S. Improving Diagnosis and Clinical Management of Acquired Systemic Autoinflammatory Diseases. J Inflamm Res 2022; 15:5739-5755. [PMID: 36238769 PMCID: PMC9553278 DOI: 10.2147/jir.s343261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/18/2022] [Indexed: 11/23/2022] Open
Abstract
Systemic autoinflammatory diseases (SAID) are conditions caused by dysregulation or disturbance of the innate immune system, with neutrophils and macrophages the main effector cells. Although there are now more than 40 distinct, genetically defined SAIDs, the genetic/molecular diagnosis remains unknown for a significant proportion of patients with the disease onset in adulthood. This review focuses on new developments related to acquired/late onset SAID, including phenocopies of monogenic disorders, Schnitzler's syndrome, Adult onset Still's disease, VEXAS syndrome, and autoinflammatory complications associated with myelodysplastic syndrome.
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Affiliation(s)
- Adam Al-Hakim
- Department of Clinical Immunology and Allergy, St James’s University Hospital, Leeds, UK
| | - Anoop Mistry
- Department of Clinical Immunology and Allergy, St James’s University Hospital, Leeds, UK
| | - Sinisa Savic
- Department of Clinical Immunology and Allergy, St James’s University Hospital, Leeds, UK,Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK,Correspondence: Sinisa Savic, Leeds Institute of Rheumatic and Musculoskeletal Medicine, Clinical Science Building, St James’s University Hospital, Leeds, LS9 7TF, UK, Tel +441132065567, Email
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11
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Efthimiou P, Petryna O, Nakasato P, Kontzias A. New insights on multigenic autoinflammatory diseases. Ther Adv Musculoskelet Dis 2022; 14:1759720X221117880. [PMID: 36081748 PMCID: PMC9445512 DOI: 10.1177/1759720x221117880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 07/14/2022] [Indexed: 11/16/2022] Open
Abstract
Autoinflammatory diseases are disorders of the innate immune system, which can be either monogenic due to a specific genetic mutation or complex multigenic due to the involvement of multiple genes. The aim of this review is to explore and summarize the recent advances in pathogenesis, diagnosis, and management of genetically complex autoinflammatory diseases, such as Schnitzler's syndrome; adult-onset Still's disease; synovitis, acne, pustulosis, hyperostosis, osteitis syndrome/chronic recurrent multifocal osteomyelitis/chronic non-bacterial osteomyelitis; Adamantiades-Behçet's disease; Yao syndrome; and periodic fever with aphthous stomatitis, pharyngitis, and adenitis syndrome. The PubMed database was screened for relevant articles using free text words and specific search strings. The search was limited to English-language articles, reporting the results of studies in humans, published through March 2021. Evidence from literature suggest that these rare multigenic autoinflammatory diseases can present with different clinical features and the diagnosis of these diseases can be challenging due to a combination of nonspecific manifestations that can be seen in a variety of other conditions. Diagnostic delays and disease complications may occur due to low disease awareness and the lack of pathognomonic markers. The pathogeneses of these diseases are complex and in some cases precise pathogenesis is not clearly understood. Conventional treatments are commonly used for the management of these conditions, but biologics have shown promising results. Biologics targeting proinflammatory cytokines including IL-1, IL-6, TNF-α, IL-17A and IL-18 have been shown to ameliorate signs and symptoms of different multigenic autoinflammatory diseases.
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Affiliation(s)
- Petros Efthimiou
- New York Rheumatology Care, Ross University School of Medicine, New York, USA
| | - Olga Petryna
- NYU Grossman School of Medicine, New York, NY, USA
| | | | - Apostolos Kontzias
- Department of Rheumatology, Stony Brook University School of Medicine, Stony Brook, NY, USA
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12
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Paradigm shift in monogenic autoinflammatory diseases and systemic vasculitis: The VEXAS syndrome. Med Clin (Barc) 2022; 159:489-496. [PMID: 36049972 DOI: 10.1016/j.medcli.2022.06.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/18/2022] [Accepted: 06/20/2022] [Indexed: 11/24/2022]
Abstract
VEXAS syndrome was described by the end of 2020 as an autoinflammatory disease caused by post-zygotic variants in the UBA1 gene. VEXAS syndrome occurs in adult males with recurrent fever, arthralgia/arthritis, ear/nose chondritis, neutrophilic dermatosis, lung inflammation, venous thrombosis, and different types of vasculitis. Common laboratory changes include raised acute phase reactants and macrocytic anemia. The coexistence of myelodysplasia is frequent, and bone marrow vacuolization of myeloid and erythroid precursors is characteristic. Glucocorticoids are effective at medium-high doses, but the remaining immunosuppressive drugs, either conventional or biological, have showed limited or absent efficacy. Azacitidine has been associated with a good response, especially in patients with accompanying myelodysplastic syndrome. Allogeneic hematopoietic stem cell transplantation appears to be the only curative therapy by now. VEXAS syndrome has become a paradigm shift in the diagnosis and treatment of autoinflammatory diseases and systemic vasculitis.
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13
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Staels F, Collignon T, Betrains A, Gerbaux M, Willemsen M, Humblet-Baron S, Liston A, Vanderschueren S, Schrijvers R. Monogenic Adult-Onset Inborn Errors of Immunity. Front Immunol 2021; 12:753978. [PMID: 34867986 PMCID: PMC8635491 DOI: 10.3389/fimmu.2021.753978] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/22/2021] [Indexed: 12/28/2022] Open
Abstract
Inborn errors of immunity (IEI) are a heterogenous group of disorders driven by genetic defects that functionally impact the development and/or function of the innate and/or adaptive immune system. The majority of these disorders are thought to have polygenic background. However, the use of next-generation sequencing in patients with IEI has led to an increasing identification of monogenic causes, unravelling the exact pathophysiology of the disease and allowing the development of more targeted treatments. Monogenic IEI are not only seen in a pediatric population but also in adulthood, either due to the lack of awareness preventing childhood diagnosis or due to a delayed onset where (epi)genetic or environmental factors can play a role. In this review, we discuss the mechanisms accounting for adult-onset presentations and provide an overview of monogenic causes associated with adult-onset IEI.
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Affiliation(s)
- Frederik Staels
- Department of Microbiology, Immunology and Transplantation, Laboratory of Adaptive Immunology, KU Leuven, Leuven, Belgium.,Department of Microbiology, Immunology and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium
| | | | - Albrecht Betrains
- Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium.,Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Infectious and Inflammatory Disease, KU Leuven, Leuven, Belgium
| | - Margaux Gerbaux
- Department of Microbiology, Immunology and Transplantation, Laboratory of Adaptive Immunology, KU Leuven, Leuven, Belgium.,Vlaams Instituut voor Biotechnologie - Katholieke Universiteit (VIB-KU) Leuven Center for Brain and Disease Research, Leuven, Belgium
| | - Mathijs Willemsen
- Department of Microbiology, Immunology and Transplantation, Laboratory of Adaptive Immunology, KU Leuven, Leuven, Belgium.,Vlaams Instituut voor Biotechnologie - Katholieke Universiteit (VIB-KU) Leuven Center for Brain and Disease Research, Leuven, Belgium
| | - Stephanie Humblet-Baron
- Department of Microbiology, Immunology and Transplantation, Laboratory of Adaptive Immunology, KU Leuven, Leuven, Belgium
| | - Adrian Liston
- Department of Microbiology, Immunology and Transplantation, Laboratory of Adaptive Immunology, KU Leuven, Leuven, Belgium.,Laboratory of Lymphocyte Signalling and Development, Babraham Institute, Cambridge, United Kingdom
| | - Steven Vanderschueren
- Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium.,Department of Microbiology, Immunology and Transplantation, Laboratory of Clinical Infectious and Inflammatory Disease, KU Leuven, Leuven, Belgium
| | - Rik Schrijvers
- Department of Microbiology, Immunology and Transplantation, Allergy and Clinical Immunology Research Group, KU Leuven, Leuven, Belgium.,Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium
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14
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Batu ED, Ozen S. Comment on: Successful hydroxychloroquine treatment for familial Mediterranean fever in a Japanese patient with concurrent systemic lupus erythematosus. Rheumatology (Oxford) 2020; 59:e155. [DOI: 10.1093/rheumatology/keaa562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 08/06/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ezgi Deniz Batu
- Division of Rheumatology, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Seza Ozen
- Division of Rheumatology, Department of Pediatrics, Hacettepe University Faculty of Medicine, Ankara, Turkey
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15
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Revisiting TNF Receptor-Associated Periodic Syndrome (TRAPS): Current Perspectives. Int J Mol Sci 2020; 21:ijms21093263. [PMID: 32380704 PMCID: PMC7246474 DOI: 10.3390/ijms21093263] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/30/2020] [Accepted: 05/03/2020] [Indexed: 12/14/2022] Open
Abstract
Tumor necrosis factor receptor-associated periodic syndrome (TRAPS) is an autosomal dominant autoinflammatory syndrome characterized by prolonged and recurrent episodes of fever, abdominal and/or chest pain, arthralgia, myalgia, and erythematous rash. TRAPS is associated with heterozygous variants in the TNFRSF1A gene, which encodes the TNFR1 (tumor necrosis factor receptor 1) receptor. Disease-causing variants are found exclusively in the extracellular domain of TNFR1 and affect receptor structure and binding to the TNF ligand. The precise mechanism of the disease is still unclear, but it is thought that intracellular accumulation of misfolded mutant protein leads to endoplasmic reticulum stress and enhanced inflammatory responses through constitutive activation of various immune pathways. Other possible mechanisms contributing to the disease pathogenesis include defective receptor shedding, TNF-induced cell death, production of reactive oxygen species, and autophagy impairment. Patients' leucocytes are hyperresponsive to stimulation and produce elevated levels of proinflammatory cytokines. Systemic autoimmune (AA) amyloidosis is an important cause of morbidity and mortality in TRAPS. Over the last two decades, new therapies have changed the progression and outcome of the disease. In this review, we summarize clinical data from 209 patients with validated pathogenic variants reported in the literature and discuss TRAPS diagnosis, pathogenesis, and treatment options.
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16
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Vandenhaute J, Wouters CH, Matthys P. Natural Killer Cells in Systemic Autoinflammatory Diseases: A Focus on Systemic Juvenile Idiopathic Arthritis and Macrophage Activation Syndrome. Front Immunol 2020; 10:3089. [PMID: 32010140 PMCID: PMC6974473 DOI: 10.3389/fimmu.2019.03089] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 12/17/2019] [Indexed: 12/12/2022] Open
Abstract
Natural killer (NK) cells are innate immune lymphocytes with potent cytolytic and immune-regulatory activities. NK cells are well-known for their ability to kill infected and malignant cells in a fast and non-specific way without prior sensitization. For this purpose, NK cells are equipped with a set of cytotoxic molecules such as perforin and apoptosis-inducing proteins. NK cells also have the capacity to produce large amounts of cytokines and chemokines that synergize with their cytotoxic function and that ensure interaction with other immune cells. A less known feature of NK cells is their capacity to kill non-infected autologous cells, such as immature dendritic cells and activated T cells and monocytes. Via the release of large amounts of TNF-α and IFN-γ, NK cells may contribute to disease pathology. Conversely they may exert a regulatory role through secretion of immuno-regulatory cytokines such as GM-CSF, IL-13, and IL-10. Thus, NK cells may be important target and effector cells in the pathogenesis of autoinflammatory diseases, in particular in those disorders associated with a cytokine storm or in conditions where immune cells are highly activated. Key examples of such diseases are systemic juvenile idiopathic arthritis (sJIA) and its well-associated complication, macrophage activation syndrome (MAS). sJIA is a chronic childhood immune disorder of unknown etiology, characterized by arthritis and systemic inflammation, including a daily spiking fever and evanescent rash. MAS is a potentially fatal complication of autoimmune and autoinflammatory diseases, and most prevalently associated with sJIA. MAS is considered as a subtype of hemophagocytic lymphohistiocytosis (HLH), a systemic hyperinflammatory disorder characterized by defective cytotoxic pathways of cytotoxic T and NK cells. In this review, we describe the established features of NK cells and provide the results of a literature survey on the reported NK cell abnormalities in monogenic and multifactorial autoinflammatory disorders. Finally, we discuss the role of NK cells in the pathogenesis of sJIA and MAS.
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Affiliation(s)
- Jessica Vandenhaute
- Laboratory of Immunobiology, Department Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium
| | - Carine H Wouters
- Laboratory of Immunobiology, Department Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium.,UZ Leuven, Leuven, Belgium.,European Reference Network for Rare Immunodeficiency, Autoinflammatory and Autoimmune Diseases (RITA) at University Hospital Leuven, Leuven, Belgium
| | - Patrick Matthys
- Laboratory of Immunobiology, Department Microbiology and Immunology, Rega Institute, KU Leuven - University of Leuven, Leuven, Belgium
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