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Perez-Perez D, Santos-Argumedo L, Rodriguez-Alba JC, Lopez-Herrera G. Analysis of LRBA pathogenic variants and the association with functional protein domains and clinical presentation. Pediatr Allergy Immunol 2024; 35:e14179. [PMID: 38923448 DOI: 10.1111/pai.14179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 05/29/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024]
Abstract
LRBA is a cytoplasmic protein that is ubiquitously distributed. Almost all LRBA domains have a scaffolding function. In 2012, it was reported that homozygous variants in LRBA are associated with early-onset hypogammaglobulinemia. Since its discovery, more than 100 pathogenic variants have been reported. This review focuses on the variants reported in LRBA and their possible associations with clinical phenotypes. In this work LRBA deficiency cases reported more than 11 years ago have been revised. A database was constructed to analyze the type of variants, age at onset, clinical diagnosis, infections, autoimmune diseases, and cellular and immunoglobulin levels. The review of cases from 2012 to 2023 showed that LRBA deficiency was commonly diagnosed in patients with a clinical diagnosis of Common Variable Immunodeficiency, followed by enteropathy, neonatal diabetes mellitus, ALPS, and X-linked-like syndrome. Most cases show early onset of presentation at <6 years of age. Most cases lack protein expression, whereas hypogammaglobulinemia is observed in half of the cases, and IgG and IgA levels are isotypes reported at low levels. Patients with elevated IgG levels exhibited more than one autoimmune manifestation. Patients carrying pathogenic variants leading to a premature stop codon show a severe phenotype as they have an earlier onset of disease presentation, severe autoimmune manifestations, premature death, and low B cells and regulatory T cell levels. Missense variants were more common in patients with low IgG levels and cytopenia. This work lead to the conclusion that the type of variant in LRBA has association with disease severity, which leads to a premature stop codon being the ones that correlates with severe disease.
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Affiliation(s)
- D Perez-Perez
- Doctorate Program in Biological Sciences, Autonomous National University of Mexico, Mexico City, Mexico
- Immunodeficiencies Laboratory, National Institute of Pediatrics (INP), Mexico City, Mexico
| | - L Santos-Argumedo
- Biomedicine Department, Center for Research and Advanced Studies of the National Polytechnic Institute (CINVESTAV), Mexico City, Mexico
| | - J C Rodriguez-Alba
- Neuroimmunology and Neurooncology Unit, The National Institute of Neurology and Neurosurgery (NINN), Mexico City, Mexico
- Medicine and Surgery Faculty, Autonomous University Benito Juarez from Oaxaca, Oaxaca, Mexico
| | - G Lopez-Herrera
- Immunodeficiencies Laboratory, National Institute of Pediatrics (INP), Mexico City, Mexico
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Kennedy-Batalla R, Acevedo D, Luo Y, Esteve-Solé A, Vlagea A, Correa-Rocha R, Seoane-Reula ME, Alsina L. Treg in inborn errors of immunity: gaps, knowns and future perspectives. Front Immunol 2024; 14:1278759. [PMID: 38259469 PMCID: PMC10800401 DOI: 10.3389/fimmu.2023.1278759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 12/13/2023] [Indexed: 01/24/2024] Open
Abstract
Regulatory T cells (Treg) are essential for immune balance, preventing overreactive responses and autoimmunity. Although traditionally characterized as CD4+CD25+CD127lowFoxP3hi, recent research has revealed diverse Treg subsets such as Tr1, Tr1-like, and CD8 Treg. Treg dysfunction leads to severe autoimmune diseases and immune-mediated inflammatory disorders. Inborn errors of immunity (IEI) are a group of disorders that affect correct functioning of the immune system. IEI include Tregopathies caused by genetic mutations affecting Treg development or function. In addition, Treg dysfunction is also observed in other IEIs, whose underlying mechanisms are largely unknown, thus requiring further research. This review provides a comprehensive overview and discussion of Treg in IEI focused on: A) advances and controversies in the evaluation of Treg extended subphenotypes and function; B) current knowledge and gaps in Treg disturbances in Tregopathies and other IEI including Treg subpopulation changes, genotype-phenotype correlation, Treg changes with disease activity, and available therapies, and C) the potential of Treg cell-based therapies for IEI with immune dysregulation. The aim is to improve both the diagnostic and the therapeutic approaches to IEI when there is involvement of Treg. We performed a non-systematic targeted literature review with a knowledgeable selection of current, high-quality original and review articles on Treg and IEI available since 2003 (with 58% of the articles within the last 6 years) in the PubMed database.
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Affiliation(s)
- Rebeca Kennedy-Batalla
- Laboratory of Immune-Regulation, Gregorio Marañón Health Research Institute (IISGM), Madrid, Spain
| | - Daniel Acevedo
- Clinical Immunology and Primary Immunodeficiencies Unit, Allergy and Clinical Immunology Department, Hospital Sant Joan de Déu, Barcelona, Spain
- Clinical Immunology Unit, Hospital Sant Joan de Déu-Hospital Clínic, Barcelona, Spain
- Study Group for Immune Dysfunction Diseases in Children (GEMDIP), Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - Yiyi Luo
- Clinical Immunology and Primary Immunodeficiencies Unit, Allergy and Clinical Immunology Department, Hospital Sant Joan de Déu, Barcelona, Spain
- Clinical Immunology Unit, Hospital Sant Joan de Déu-Hospital Clínic, Barcelona, Spain
- Study Group for Immune Dysfunction Diseases in Children (GEMDIP), Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - Ana Esteve-Solé
- Clinical Immunology and Primary Immunodeficiencies Unit, Allergy and Clinical Immunology Department, Hospital Sant Joan de Déu, Barcelona, Spain
- Clinical Immunology Unit, Hospital Sant Joan de Déu-Hospital Clínic, Barcelona, Spain
- Study Group for Immune Dysfunction Diseases in Children (GEMDIP), Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - Alexandru Vlagea
- Clinical Immunology Unit, Hospital Sant Joan de Déu-Hospital Clínic, Barcelona, Spain
- Immunology Department, Biomedic Diagnostic Center (CDB), Hospital Clínic of Barcelona, Clinical Immunology Unit Hospital Sant Joan de Déu-Hospital Clínic de Barcelona, Barcelona, Spain
| | - Rafael Correa-Rocha
- Laboratory of Immune-Regulation, Gregorio Marañón Health Research Institute (IISGM), Madrid, Spain
| | - Ma Elena Seoane-Reula
- Laboratory of Immune-Regulation, Gregorio Marañón Health Research Institute (IISGM), Madrid, Spain
- Pediatric Immuno-Allergy Unit, Allergy Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
- Primary Immunodeficiencies Unit, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Laia Alsina
- Clinical Immunology and Primary Immunodeficiencies Unit, Allergy and Clinical Immunology Department, Hospital Sant Joan de Déu, Barcelona, Spain
- Clinical Immunology Unit, Hospital Sant Joan de Déu-Hospital Clínic, Barcelona, Spain
- Study Group for Immune Dysfunction Diseases in Children (GEMDIP), Institut de Recerca Sant Joan de Déu, Barcelona, Spain
- Department of Surgery and Surgical Specializations, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain
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Tessarin G, Baronio M, Lougaris V. Monogenic forms of common variable immunodeficiency and implications on target therapeutic approaches. Curr Opin Allergy Clin Immunol 2023; 23:461-466. [PMID: 37767915 PMCID: PMC10621638 DOI: 10.1097/aci.0000000000000947] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
PURPOSE OF REVIEW Common variable immunodeficiency (CVID) is the most common symptomatic inborn error of immunity. The disorder is characterized by variable clinical and immunological manifestations, and, in a small minority of patients, a monogenic cause may be identified. In this review, we focalized on three different monogenic forms of CVID-like disease. RECENT FINDINGS Activated phosphoinositide 3-kinase delta syndrome (APDS) is a rare disorder characterized by hyperactivated class I phosphatidylinositol-3 kinase (PI3K) pathway. Affected patients present with respiratory infectious episodes, impaired viral clearance and lymphoproliferation. Recently, a direct PI3K inhibitor has been approved and it showed encouraging results both in controlling clinical and immunological manifestations of the disease. On the other hand, patients with defects in CTLA-4 or LRBA gene present with life-threatening immune dysregulation, autoimmunity and lymphocytic infiltration of multiple organs. Abatacept, a soluble cytotoxic T lymphocyte antigen 4 (CTLA-4) fusion protein that acts as a costimulation modulator, has been widely implemented for affected patients with good results as bridge treatment. SUMMARY Understanding the biological basis of CVID is important not only for enriching our knowledge of the human immune system, but also for setting the basis for potential targeted treatments in this disorder.
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Affiliation(s)
- Giulio Tessarin
- Pediatrics Clinic and Institute for Molecular Medicine 'A. Nocivelli', Department of Clinical and Experimental Sciences, University of Brescia and ASST Spedali Civili of Brescia, Brescia, Italy
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Wobma H, Janssen E. Expanding IPEX: Inborn Errors of Regulatory T Cells. Rheum Dis Clin North Am 2023; 49:825-840. [PMID: 37821198 DOI: 10.1016/j.rdc.2023.06.009] [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: 10/13/2023]
Abstract
Regulatory T cells (Tregs) are critical for enforcing peripheral tolerance. Monogenic "Tregopathies" affecting Treg development, stability, and/or function commonly present with polyautoimmunity, atopic disease, and infection. While autoimmune manifestations may present in early childhood, as more disorders are characterized, conditions with later onset have been identified. Treg numbers in the blood may be decreased in Tregopathies, but this is not always the case, and genetic testing should be pursued when there is high clinical suspicion. Currently, hematopoietic cell transplantation is the only curative treatment, but gene therapies are in development, and small molecule inhibitors/biologics may also be used.
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Affiliation(s)
- Holly Wobma
- Division of Immunology, Boston Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Erin Janssen
- Department of Pediatrics, Division of Pediatric Rheumatology, Michigan Medicine, C.S. Mott Children's Hospital, 1500 East Medical Center Drive, SPC 5718, Ann Arbor, MI 48109, USA.
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Rojas-Restrepo J, Sindram E, Zenke S, Haberstroh H, Mitsuiki N, Gabrysch A, Huebscher K, Posadas-Cantera S, Krausz M, Kobbe R, Rohr JC, Grimbacher B, Gámez-Díaz L. Functional Relevance of CTLA4 Variants: an Upgraded Approach to Assess CTLA4-Dependent Transendocytosis by Flow Cytometry. J Clin Immunol 2023; 43:2076-2089. [PMID: 37740092 PMCID: PMC10661720 DOI: 10.1007/s10875-023-01582-9] [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: 03/11/2023] [Accepted: 09/05/2023] [Indexed: 09/24/2023]
Abstract
Variants of uncertain significance (VUS) in CTLA4 are frequently identified in patients with antibody deficiency or immune dysregulation syndromes including, but not limited to, patients with multi-organ autoimmunity and autoinflammation. However, to ascertain the diagnosis of CTLA4 insufficiency, the functional relevance of each variant needs to be determined. Currently, various assays have been proposed to assess the functionality of CTLA4 VUS, including the analysis of transendocytosis, the biological function of CTLA4 to capture CD80 molecules from antigen presenting cells. Challenges of this assay include weak fluorescence intensity of the internalized ligand, poor reproducibility, and poor performance upon analyzing thawed cells. In addition, the distinction of pathogenic from non-pathogenic variants and from wild-type CTLA4, and the classification of the different VUS according to its level of CTLA4 dysfunction, would be desirable. We developed a novel CD80-expressing cell line for the evaluation of CD80-transendocytosis and compared it to the published transendocytosis assay. Our approach showed lower inter-assay variability and better robustness regardless the type of starting material (fresh or thawed peripheral mononuclear cells). In addition, receiver operating characteristic analysis showed 100% specificity, avoiding false positive results and allowing for a clear distinction between pathogenic and non-pathogenic variants in CTLA4-variant carriers. With our transendocytosis assay, we assessed the pathogenicity of 24 distinct CTLA4 variants from patients submitted to our diagnostic unit. Significantly impaired transendocytosis was demonstrated for 17 CTLA4 variants, whereas seven variants tested normal. In conclusion, our upgraded transendocytosis assay allows a reliable assessment of newly identified variants in CTLA4.
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Affiliation(s)
- Jessica Rojas-Restrepo
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Elena Sindram
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- Spemann Graduate School of Biology and Medicine (SGBM), University of Freiburg, Freiburg, Germany
| | - Simon Zenke
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- Matterhorn Biosciences GmbH, Basel, Switzerland
| | - Hanna Haberstroh
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Noriko Mitsuiki
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Annemarie Gabrysch
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Katrin Huebscher
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Sara Posadas-Cantera
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Máté Krausz
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- Department of Rheumatology and Clinical Immunology, University Medical Center Freiburg, Freiburg, Germany
| | - Robin Kobbe
- Institute for Infection Research and Vaccine Development (IIRVD), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Infectious Disease Epidemiology, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Jan C Rohr
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Novartis Institutes for Biomedical Research (NIBR), Novartis Pharma AG, Basel, Switzerland
| | - Bodo Grimbacher
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
- Department of Rheumatology and Clinical Immunology, University Medical Center Freiburg, Freiburg, Germany.
- German Center for Infection Research (DZIF), Satellite Center Freiburg, Freiburg, Germany.
- CIBSS - Center for Integrative Biological Signaling Studies, University of Freiburg, Freiburg, Germany.
- RESIST - Cluster of Excellence 2155 to Hanover Medical School, Satellite Center Freiburg, Freiburg, Germany.
| | - Laura Gámez-Díaz
- Institute for Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
- Center for Chronic Immunodeficiency, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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Mohan S. Targeted Treatment of Diseases of Immune Dysregulation. Rheum Dis Clin North Am 2023; 49:913-929. [PMID: 37821203 DOI: 10.1016/j.rdc.2023.07.002] [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: 10/13/2023]
Abstract
Increasing molecular knowledge of autoinflammatory and autoimmune disorders has enabled more targeted treatment of these conditions. Treatment of inflammasomopathies is often aimed at interleukin-1 (IL-1) blockade, with potential use of other inhibitors targeting cytokines such as IL-18 and IL-6. Interferonopathies and some disorders with overlap features of autoimmunity and autoinflammation may improve with Janus kinase inhibition. Autoimmune conditions may also respond to inhibition of different cytokines, as well as to inhibition of T and B lymphocytes. Effective treatment is increasingly possible through targeted/precision medicine approaches.
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Affiliation(s)
- Smriti Mohan
- Division of Rheumatology, Department of Pediatrics, University of Michigan CS Mott Children's Hospital, 1500 East Medical Ctr Dr SPC 5718, Ann Arbor, MI 48109-5718, USA.
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Tsilifis C, Slatter MA, Gennery AR. Too much of a good thing: a review of primary immune regulatory disorders. Front Immunol 2023; 14:1279201. [PMID: 38022498 PMCID: PMC10645063 DOI: 10.3389/fimmu.2023.1279201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 10/16/2023] [Indexed: 12/01/2023] Open
Abstract
Primary immune regulatory disorders (PIRDs) are inborn errors of immunity caused by a loss in the regulatory mechanism of the inflammatory or immune response, leading to impaired immunological tolerance or an exuberant inflammatory response to various stimuli due to loss or gain of function mutations. Whilst PIRDs may feature susceptibility to recurrent, severe, or opportunistic infection in their phenotype, this group of syndromes has broadened the spectrum of disease caused by defects in immunity-related genes to include autoimmunity, autoinflammation, lymphoproliferation, malignancy, and allergy; increasing focus on PIRDs has thus redefined the classical 'primary immunodeficiency' as one aspect of an overarching group of inborn errors of immunity. The growing number of genetic defects associated with PIRDs has expanded our understanding of immune tolerance mechanisms and prompted identification of molecular targets for therapy. However, PIRDs remain difficult to recognize due to incomplete penetrance of their diverse phenotype, which may cross organ systems and present to multiple clinical specialists prior to review by an immunologist. Control of immune dysregulation with immunosuppressive therapies must be balanced against the enhanced infective risk posed by the underlying defect and accumulated end-organ damage, posing a challenge to clinicians. Whilst allogeneic hematopoietic stem cell transplantation may correct the underlying immune defect, identification of appropriate patients and timing of transplant is difficult. The relatively recent description of many PIRDs and rarity of individual genetic entities that comprise this group means data on natural history, clinical progression, and treatment are limited, and so international collaboration will be needed to better delineate phenotypes and the impact of existing and potential therapies. This review explores pathophysiology, clinical features, current therapeutic strategies for PIRDs including cellular platforms, and future directions for research.
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Affiliation(s)
- Christo Tsilifis
- Paediatric Immunology and Haematopoietic Stem Cell Transplantation, Great North Children’s Hospital, Newcastle upon Tyne, United Kingdom
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Mary A. Slatter
- Paediatric Immunology and Haematopoietic Stem Cell Transplantation, Great North Children’s Hospital, Newcastle upon Tyne, United Kingdom
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Andrew R. Gennery
- Paediatric Immunology and Haematopoietic Stem Cell Transplantation, Great North Children’s Hospital, Newcastle upon Tyne, United Kingdom
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
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Vanselow S, Hanitsch L, Hauck F, Körholz J, Maccari ME, Meinhardt A, Sogkas G, Schuetz C, Grimbacher B. Future Directions in the Diagnosis and Treatment of APDS and IEI: a Survey of German IEI Centers. Front Immunol 2023; 14:1279652. [PMID: 37868971 PMCID: PMC10588788 DOI: 10.3389/fimmu.2023.1279652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 09/19/2023] [Indexed: 10/24/2023] Open
Abstract
Introduction The diagnosis and treatment of inborn errors of immunity (IEI) is a major challenge as the individual conditions are rare and often characterized by a variety of symptoms, which are often non disease-specific. Ideally, patients are treated in dedicated centers by physicians who specialize in the management of primary immune disorders. In this study, we used the example of Activated PI3Kδ syndrome (APDS), a rare IEI with an estimated prevalence of 1:1,000,000. We conducted surveys by questionnaire and interviewed physicians at different IEI centers in Germany. Methods We queried structural aspects of IEI care in Germany, diagnostic procedures in IEI care (including molecular diagnostics), distribution of APDS patients, APDS symptoms and severity, treatment algorithms in APDS, the role of stem cell transplantation and targeted therapies in IEI with focus on APDS. We were especially interested in how genetic diagnostics may influence treatment decisions, e.g. with regard to targeted therapies. Results/discussion Most centers care for both pediatric and adult patients. A total of 28 APDS patients are currently being treated at the centers we surveyed. Patient journeys vary considerably, as does severity of disease. Genetic diagnosis continues to gain importance - whole genome sequencing is likely to become routine in IEI in the next few years. According to the experts interviewed, stem cell transplantation and - with new molecules being approved - targeted therapies, will gain in importance for the treatment of APDS and IEI in general.
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Affiliation(s)
- Sven Vanselow
- Infill Healthcare Communication, Königswinter, Germany
| | - Leif Hanitsch
- Institute of Medical Immunology, Institute of Occupational Medicine, Charité – University Medicine Berlin, corporate member of Freie University, Berlin and Humboldt-University of Berlin, Berlin, Germany
| | - Fabian Hauck
- Department of Pediatric Immunology and Rheumatology, Dr. Von Hauner Children’s Hospital, Ludwig-Maximilians-Universität (LMU) Munich University Hospital, Munich, Germany
| | - Julia Körholz
- Department of Pediatrics, University Hospital Carl Gustav Carus, Dresden, Germany
- University Center for Rare Diseases, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Maria-Elena Maccari
- Center for Chronic Immunodeficiency, University of Freiburg Medical Center, Freiburg, Germany
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, University Medical Center Freiburg, Freiburg, Germany
| | - Andrea Meinhardt
- Center for Pediatrics and Adolescent Medicine, Department of Pediatric Oncology, Hematology and Immunodeficiencies, University Hospital Giessen, Giessen, Germany
| | - Georgios Sogkas
- Clinic for Rheumatology and Immunology, Center for Internal Medicine, Hannover Medical School, Hannover, Germany
- Hannover Medical School, Cluster of Excellence RESIST (EXC 2155), Hannover, Germany
| | - Catharina Schuetz
- Department of Pediatrics, University Hospital Carl Gustav Carus, Dresden, Germany
- University Center for Rare Diseases, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Bodo Grimbacher
- Center for Chronic Immunodeficiency, University of Freiburg Medical Center, Freiburg, Germany
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9
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The link between rheumatic disorders and inborn errors of immunity. EBioMedicine 2023; 90:104501. [PMID: 36870198 PMCID: PMC9996386 DOI: 10.1016/j.ebiom.2023.104501] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/11/2022] [Accepted: 02/10/2023] [Indexed: 03/06/2023] Open
Abstract
Inborn errors of immunity (IEIs) are immunological disorders characterized by variable susceptibility to infections, immune dysregulation and/or malignancies, as a consequence of damaging germline variants in single genes. Though initially identified among patients with unusual, severe or recurrent infections, non-infectious manifestations and especially immune dysregulation in the form of autoimmunity or autoinflammation can be the first or dominant phenotypic aspect of IEIs. An increasing number of IEIs causing autoimmunity or autoinflammation, including rheumatic disease have been reported over the last decade. Despite their rarity, identification of those disorders provided insight into the pathomechanisms of immune dysregulation, which may be relevant for understanding the pathogenesis of systemic rheumatic disorders. In this review, we present novel IEIs primarily causing autoimmunity or autoinflammation along with their pathogenic mechanisms. In addition, we explore the likely pathophysiological and clinical relevance of IEIs in systemic rheumatic disorders.
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Margarit-Soler A, Deyà-Martínez À, Canizales JT, Vlagea A, García-García A, Marsal J, Del Castillo MT, Planas S, Simó S, Esteve-Sole A, Grande MSL, Badell I, Tarrats MR, Fernández-Avilés F, Alsina L. Case report: Challenges in immune reconstitution following hematopoietic stem cell transplantation for CTLA-4 insufficiency-like primary immune regulatory disorders. Front Immunol 2022; 13:1070068. [PMID: 36636328 PMCID: PMC9831655 DOI: 10.3389/fimmu.2022.1070068] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 11/28/2022] [Indexed: 12/28/2022] Open
Abstract
Cytotoxic T-lymphocyte antigen-4 (CTLA-4) haploinsufficiency is a T-cell hyperactivation disorder that can manifest with both immunodeficiency and immune dysregulation. Approximately one-third of patients may present mild symptoms and remain stable under supportive care. The remaining patients may develop severe multiorgan autoimmunity requiring lifelong immunosuppressive treatment. Hematopoietic stem cell transplantation (HSCT) is potentially curable for patients with treatment-resistant immune dysregulation. Nevertheless, little experience is reported regarding the management of complications post-HSCT. We present case 1 (CTLA-4 haploinsufficiency) and case 2 (CTLA-4 insufficiency-like phenotype) manifesting with severe autoimmunity including cytopenia and involvement of the central nervous system (CNS), lung, and gut and variable impairment of humoral responses. Both patients underwent HSCT for which the main complications were persistent mixed chimerism, infections, and immune-mediated complications [graft-versus-host disease (GVHD) and nodular lung disease]. Detailed management and outcomes of therapeutic interventions post-HSCT are discussed. Concretely, post-HSCT abatacept and human leukocyte antigen (HLA)-matched sibling donor lymphocyte infusions may be used to increase T-cell donor chimerism with the aim of correcting the immune phenotype of CTLA-4 haploinsufficiency.
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Affiliation(s)
- Adriana Margarit-Soler
- Bone Marrow Transplant Unit, Oncology Service, Hospital Sant Joan de Déu, Barcelona, Spain,*Correspondence: Adriana Margarit-Soler, ; Laia Alsina,
| | - Àngela Deyà-Martínez
- Clinical Immunology and Primary Immunodeficiencies Unit, Pediatric Allergy and Clinical Immunology Department, Hospital Sant Joan de Déu, Barcelona, Spain,Study Group for Immune Dysfunction Diseases in Children (GEMDIP), Institut de Recerca Sant Joan de Déu, Barcelona, Spain,Clinical Immunology Program Hospital Sant Joan de Déu-Hospital Clínic Barcelona, Barcelona, Spain
| | - Juan Torres Canizales
- Clinical Immunology Unit, Department of Immunology, Biomedical Diagnostic Center, Hospital Clínic of Barcelona-Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Alexandru Vlagea
- Clinical Immunology Unit, Department of Immunology, Biomedical Diagnostic Center, Hospital Clínic of Barcelona-Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Ana García-García
- Clinical Immunology and Primary Immunodeficiencies Unit, Pediatric Allergy and Clinical Immunology Department, Hospital Sant Joan de Déu, Barcelona, Spain,Study Group for Immune Dysfunction Diseases in Children (GEMDIP), Institut de Recerca Sant Joan de Déu, Barcelona, Spain,Clinical Immunology Program Hospital Sant Joan de Déu-Hospital Clínic Barcelona, Barcelona, Spain
| | - Júlia Marsal
- Bone Marrow Transplant Unit, Oncology Service, Hospital Sant Joan de Déu, Barcelona, Spain
| | | | - Sílvia Planas
- Department of Pathology, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Sílvia Simó
- Infectious Diseases Unit, Department of Pediatrics, Hospital Sant Joan de Déu, Barcelona, Spain,Center for Biomedical Network Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Ana Esteve-Sole
- Clinical Immunology and Primary Immunodeficiencies Unit, Pediatric Allergy and Clinical Immunology Department, Hospital Sant Joan de Déu, Barcelona, Spain,Study Group for Immune Dysfunction Diseases in Children (GEMDIP), Institut de Recerca Sant Joan de Déu, Barcelona, Spain,Clinical Immunology Program Hospital Sant Joan de Déu-Hospital Clínic Barcelona, Barcelona, Spain
| | - María Suárez-Lledó Grande
- Hematopoietic Transplantation Unit, Hematology Department, Clinical Institute of Hematology and Oncology (ICMHO), Hospital Clínic de Barcelona, Barcelona, Spain,Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clinic, Barcelona, Spain,Department of Surgery and Surgical Specializations, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain
| | - Isabel Badell
- Bone Marrow Transplant Unit, Oncology Service, Hospital Sant Joan de Déu, Barcelona, Spain,Pediatric Haematology and Stem Cell Transplantation Unit, Pediatric Department, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Montserrat Rovira Tarrats
- Bone Marrow Transplant Unit, Oncology Service, Hospital Sant Joan de Déu, Barcelona, Spain,Hematopoietic Transplantation Unit, Hematology Department, Clinical Institute of Hematology and Oncology (ICMHO), Hospital Clínic de Barcelona, Barcelona, Spain,Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clinic, Barcelona, Spain
| | - Francesc Fernández-Avilés
- Hematopoietic Transplantation Unit, Hematology Department, Clinical Institute of Hematology and Oncology (ICMHO), Hospital Clínic de Barcelona, Barcelona, Spain,Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clinic, Barcelona, Spain
| | - Laia Alsina
- Clinical Immunology and Primary Immunodeficiencies Unit, Pediatric Allergy and Clinical Immunology Department, Hospital Sant Joan de Déu, Barcelona, Spain,Study Group for Immune Dysfunction Diseases in Children (GEMDIP), Institut de Recerca Sant Joan de Déu, Barcelona, Spain,Clinical Immunology Program Hospital Sant Joan de Déu-Hospital Clínic Barcelona, Barcelona, Spain,Department of Surgery and Surgical Specializations, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain,*Correspondence: Adriana Margarit-Soler, ; Laia Alsina,
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11
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Krausz M, Mitsuiki N, Falcone V, Komp J, Posadas-Cantera S, Lorenz HM, Litzman J, Wolff D, Kanariou M, Heinkele A, Speckmann C, Häcker G, Hengel H, Gámez-Díaz L, Grimbacher B. Do common infections trigger disease-onset or -severity in CTLA-4 insufficiency? Front Immunol 2022; 13:1011646. [PMID: 36405723 PMCID: PMC9667032 DOI: 10.3389/fimmu.2022.1011646] [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: 08/04/2022] [Accepted: 10/17/2022] [Indexed: 01/24/2023] Open
Abstract
PURPOSE Heterozygous mutations in CTLA4 lead to an inborn error of immunity characterized by immune dysregulation and immunodeficiency, known as CTLA-4 insufficiency. Cohort studies on CTLA4 mutation carriers showed a reduced penetrance (around 70%) and variable disease expressivity, suggesting the presence of modifying factors. It is well studied that infections can trigger autoimmunity in humans, especially in combination with a genetic predisposition. METHODS To investigate whether specific infections or the presence of specific persisting pathogens are associated with disease onset or severity in CTLA-4 insufficiency, we have examined the humoral immune response in 13 CTLA4 mutation carriers, seven without clinical manifestation and six with autoimmune manifestations, but without immunoglobulin replacement therapy against cytomegalovirus (CMV), Epstein-Barr virus (EBV), herpes simplex virus 1/2 (HSV 1/2), parvovirus B19 and Toxoplasma gondii. Additionally, we have measured FcγRIII/CD16A activation by EBV-specific IgG antibodies to examine the functional capabilities of immunoglobulins produced by CTLA4 mutation carriers. RESULTS The seroprevalence between affected and unaffected CTLA4 mutation carriers did not differ significantly for the examined pathogens. Additionally, we show here that CTLA4 mutation carriers produce EBV-specific IgG, which are unimpaired in activating FcγRIII/CD16A. CONCLUSIONS Our results show that the investigated pathogens are very unlikely to trigger the disease onset in CTLA-4-insufficient individuals, and their prevalence is not correlated with disease severity or expressivity.
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Affiliation(s)
- Máté Krausz
- Institute for Immunodeficiency, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Center for Chronic Immunodeficiency (CCI), Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Noriko Mitsuiki
- Center for Chronic Immunodeficiency (CCI), Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Valeria Falcone
- Institute of Virology, University Medical Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Johanna Komp
- Institute of Medical Microbiology and Hygiene, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Sara Posadas-Cantera
- Institute for Immunodeficiency, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Center for Chronic Immunodeficiency (CCI), Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Institute of Medical Microbiology and Hygiene, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Hanns-Martin Lorenz
- Division of Rheumatology, Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany
| | - Jiri Litzman
- Department of Clinical Immunology and Allergology, St. Anne’s University Hospital in Brno and Medical Faculty, Masaryk University, Brno, Czechia
| | - Daniel Wolff
- Department of Internal Medicine III, University Hospital Regensburg, Regensburg, Germany
| | - Maria Kanariou
- Department of Immunology and Histocompatibility, Centre for Primary Immunodeficiencies, “Aghia Sophia” Children’s Hospital, Athens, Greece
| | - Anita Heinkele
- Center for Pediatric Rheumatology, Olgahospital, Stuttgart, Germany
| | - Carsten Speckmann
- Institute for Immunodeficiency, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Center for Chronic Immunodeficiency (CCI), Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Department of Pediatric Hematology and Oncology, Center for Pediatrics and Adolescent Medicine, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Georg Häcker
- Institute of Medical Microbiology and Hygiene, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Hartmut Hengel
- Institute of Virology, University Medical Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Laura Gámez-Díaz
- Institute for Immunodeficiency, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Center for Chronic Immunodeficiency (CCI), Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Bodo Grimbacher
- Institute for Immunodeficiency, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Center for Chronic Immunodeficiency (CCI), Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany,DZIF – German Center for Infection Research, Satellite Center Freiburg, Freiburg, Germany,CIBSS – Centre for Integrative Biological Signalling Studies, University of Freiburg, Freiburg, Germany,RESIST – Cluster of Excellence 2155 to Hannover Medical School, Satellite Center Freiburg, Freiburg, Germany,*Correspondence: Bodo Grimbacher,
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