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Hadžić N, Molnar E, Height S, Kovács G, Dhawan A, Andrikovics H, Worth A, Gilmour KC. High Prevalence of Hemophagocytic Lymphohistiocytosis in Acute Liver Failure of Infancy. J Pediatr 2022; 250:67-74.e1. [PMID: 35835228 DOI: 10.1016/j.jpeds.2022.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/01/2022] [Accepted: 07/07/2022] [Indexed: 10/17/2022]
Abstract
OBJECTIVES To investigate the prevalence of hemophagocytic lymphohistiocytosis (HLH) syndrome in pediatric acute liver failure (PALF) of infancy and assess the diagnostic role of rapid immunologic tests, genotype/phenotype correlations, and clinical outcomes. STUDY DESIGN We retrospectively analyzed 78 children with PALF aged <24 months referred over almost 2 decades. The studied patients with a phenotype of HLH syndrome had a comprehensive immunologic workup, including additional genetic analysis for primary immunologic causes. RESULTS Thirty of the 78 children had the HLH phenotype and underwent genetic assessment, which demonstrated positive findings in 19 (63.3%), including 9 (30%) with biallelic primary HLH mutations and 10 (33.3%) with heterozygous mutations and/or polymorphisms. The most common form of primary HLH was familial hemophagocytic lymphohistiocytosis (FHL)-2, diagnosed in 6 children, 4 of whom had a c.50delT (p.Leu17ArgfsTer34) mutation in the PRF1 gene. Three patients with primary HLH received genetic diagnoses of FHL-3, Griscelli syndrome, and LRBA (lipopolysaccharide-responsive vesicle trafficking, beach- and anchor-containing) protein deficiency. Overall mortality in the series was 52.6% (10 of 19), and mortality in children with a documented biallelic pathogenic HLH mutation (ie, primary HLH) was 66.6% (6 of 9). Two children underwent liver transplantation, and 4 children underwent emergency hematopoietic stem cell transplantation; all but 1 child survived medium term. CONCLUSIONS Primary HLH can be diagnosed retrospectively in approximately one-third of infants with indeterminate PALF (iPALF) who meet the clinical criteria for HLH, often leading to their death. The most common HLH type in iPALF is FHL-2, caused by biallelic mutations in PRF-1. The clinical relevance of observed heterozygous mutations and variants of uncertain significance requires further investigation. Prompt hematopoietic stem cell transplantation could be life-saving in infants who survive the liver injury.
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Affiliation(s)
- Nedim Hadžić
- Paediatric Liver Service, King's College Hospital, London, United Kingdom.
| | - Emese Molnar
- Department of Immunology, Camelia Bothnar Laboratories, Great Ormond Street Hospital, London, United Kingdom; Department of Rheumatology and Clinical Immunology, Semmelweis University, Budapest, Hungary
| | - Sue Height
- Department of Haematology, King's College Hospital, London, United Kingdom
| | - Gabor Kovács
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - Anil Dhawan
- Paediatric Liver Service, King's College Hospital, London, United Kingdom
| | - Hajnalka Andrikovics
- Laboratory of Molecular Genetics, Central Hospital of Southern Pest, Budapest, Hungary
| | - Austen Worth
- Department of Immunology, Camelia Bothnar Laboratories, Great Ormond Street Hospital, London, United Kingdom
| | - Kimberly C Gilmour
- Department of Immunology, Camelia Bothnar Laboratories, Great Ormond Street Hospital, London, United Kingdom
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McCreary D, Omoyinmi E, Hong Y, Jensen B, Burleigh A, Price-Kuehne F, Gilmour K, Eleftheriou D, Brogan P. A rapid turnaround gene panel for severe autoinflammation: Genetic results within 48 hours. Front Immunol 2022; 13:998967. [PMID: 36203604 PMCID: PMC9531256 DOI: 10.3389/fimmu.2022.998967] [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: 07/20/2022] [Accepted: 09/05/2022] [Indexed: 11/30/2022] Open
Abstract
There is an important unmet clinical need for fast turnaround next generation sequencing (NGS) to aid genetic diagnosis of patients with acute and sometimes catastrophic inflammatory presentations. This is imperative for patients who require precise and targeted treatment to prevent irreparable organ damage or even death. Acute and severe hyper- inflammation may be caused by primary immunodeficiency (PID) with immune dysregulation, or more typical autoinflammatory diseases in the absence of obvious immunodeficiency. Infectious triggers may be present in either immunodeficiency or autoinflammation. We compiled a list of 25 genes causing monogenetic immunological diseases that are notorious for their acute first presentation with fulminant inflammation and which may be amenable to specific treatment, including hemophagocytic lymphohistiocytosis (HLH); and autoinflammatory diseases that can present with early-onset stroke or other irreversible neurological inflammatory complications. We designed and validated a pipeline that enabled return of clinically actionable results in hours rather than weeks: the Rapid Autoinflammation Panel (RAP). We demonstrated accuracy of this new pipeline, with 100% sensitivity and 100% specificity. Return of results to clinicians was achieved within 48-hours from receiving the patient's blood or saliva sample. This approach demonstrates the potential significant diagnostic impact of NGS in acute medicine to facilitate precision medicine and save "life or limb" in these critical situations.
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Affiliation(s)
- Dara McCreary
- Inflammation and Rheumatology Section, University College London Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Ebun Omoyinmi
- Inflammation and Rheumatology Section, University College London Great Ormond Street Institute of Child Health, London, United Kingdom.,National Amyloidosis Centre, Royal Free Hospital, London, United Kingdom
| | - Ying Hong
- Inflammation and Rheumatology Section, University College London Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Barbara Jensen
- Inflammation and Rheumatology Section, University College London Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Alice Burleigh
- Inflammation and Rheumatology Section, University College London Great Ormond Street Institute of Child Health, London, United Kingdom.,Centre for Adolescent Rheumatology, University College London, London, United Kingdom
| | - Fiona Price-Kuehne
- Inflammation and Rheumatology Section, University College London Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Kimberly Gilmour
- Camelia Botnar Laboratory, Great Ormond Street Hospital National Health Service (NHS) Foundation Trust, London, United Kingdom
| | - Despina Eleftheriou
- Inflammation and Rheumatology Section, University College London Great Ormond Street Institute of Child Health, London, United Kingdom.,Centre for Adolescent Rheumatology, University College London, London, United Kingdom.,Rheumatology Department, Great Ormond Street Hospital National Health Service (NHS) Foundation Trust, London, United Kingdom
| | - Paul Brogan
- Inflammation and Rheumatology Section, University College London Great Ormond Street Institute of Child Health, London, United Kingdom.,Rheumatology Department, Great Ormond Street Hospital National Health Service (NHS) Foundation Trust, London, United Kingdom
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Macrophage Activation Syndrome in Childhood Inflammatory Disorders: Diagnosis, Genetics, Pathophysiology, and Treatment. CURRENT TREATMENT OPTIONS IN RHEUMATOLOGY 2020. [DOI: 10.1007/s40674-020-00153-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chiang SCC, Bleesing JJ, Marsh RA. Current Flow Cytometric Assays for the Screening and Diagnosis of Primary HLH. Front Immunol 2019; 10:1740. [PMID: 31396234 PMCID: PMC6664088 DOI: 10.3389/fimmu.2019.01740] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 07/10/2019] [Indexed: 12/16/2022] Open
Abstract
Advances in flow cytometry have led to greatly improved primary immunodeficiency (PID) diagnostics. This is due to the fact that patient blood cells in suspension do not require further processing for analysis by flow cytometry, and many PIDs lead to alterations in leukocyte numbers, phenotype, and function. A large portion of current PID assays can be classified as “phenotyping” assays, where absolute numbers, frequencies, and markers are investigated using specific antibodies. Inherent drawbacks of antibody technology are the main limitation to this type of testing. On the other hand, “functional” assays measure cellular responses to certain stimuli. While these latter assays are powerful tools that can be used to detect defects in entire pathways and distinguish variants of significance, it requires samples with robust viability and also skilled processing. In this review, we concentrate on hemophagocytic lymphohistiocytosis (HLH), describing the principles and accuracies of flow cytometric assays that have been proven to assist in the screening diagnosis of primary HLH.
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Affiliation(s)
- Samuel Cern Cher Chiang
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States
| | - Jack J Bleesing
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States
| | - Rebecca A Marsh
- Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.,Department of Pediatrics, University of Cincinnati, Cincinnati, OH, United States
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Madkaikar MR, Shabrish S, Kulkarni M, Aluri J, Dalvi A, Kelkar M, Gupta M. Application of Flow Cytometry in Primary Immunodeficiencies: Experience From India. Front Immunol 2019; 10:1248. [PMID: 31244832 PMCID: PMC6581000 DOI: 10.3389/fimmu.2019.01248] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 05/16/2019] [Indexed: 11/21/2022] Open
Abstract
Primary immunodeficiency diseases (PID) are a clinically and immunologically heterogeneous group of disorders of immune system. Diagnosis of these disorders is often challenging and requires identification of underlying genetic defects, complemented by a comprehensive evaluation of immune system. Flow cytometry, with its advances in the last few decades, has emerged as an indispensable tool for enumeration as well as characterization of immune cells. Flow cytometric evaluation of the immune system not only provides clues to underlying genetic defects in certain PIDs and helps in functional validation of novel genetic defects, but is also useful in monitoring immune responses following specific therapies. India has witnessed significant progress in the field of flow cytometry as well as PID over last one decade. Currently, there are seven Federation of Primary Immunodeficiency Diseases (FPID) recognized centers across India, including two Indian Council of Medical research (ICMR) funded centers of excellence for diagnosis, and management of PIDs. These centers offer comprehensive care for PIDs including flow cytometry based evaluation. The key question which always remains is how one selects from the wide array of flow cytometry based tests available, and whether all these tests should be performed before or after the identification of genetic defects. This becomes crucial, especially when resources are limited and patients have to pay for the investigations. In this review, we will share some of our experiences based on evaluation of a large cohort of hemophagocytic lymphohistiocytosis, severe combined immunodeficiency, and chronic granulomatous disease, and the lessons learned for optimum use of this powerful technology for diagnosis of these disorders.
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Affiliation(s)
- Manisha Rajan Madkaikar
- Department of Paediatric Immunology and Leukocyte Biology, National Institute of Iummunohematology (ICMR), Mumbai, India
| | - Snehal Shabrish
- Department of Paediatric Immunology and Leukocyte Biology, National Institute of Iummunohematology (ICMR), Mumbai, India
| | - Manasi Kulkarni
- Department of Paediatric Immunology and Leukocyte Biology, National Institute of Iummunohematology (ICMR), Mumbai, India
| | - Jahnavi Aluri
- Department of Paediatric Immunology and Leukocyte Biology, National Institute of Iummunohematology (ICMR), Mumbai, India
| | - Aparna Dalvi
- Department of Paediatric Immunology and Leukocyte Biology, National Institute of Iummunohematology (ICMR), Mumbai, India
| | - Madhura Kelkar
- Department of Paediatric Immunology and Leukocyte Biology, National Institute of Iummunohematology (ICMR), Mumbai, India
| | - Maya Gupta
- Department of Paediatric Immunology and Leukocyte Biology, National Institute of Iummunohematology (ICMR), Mumbai, India
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Abstract
Hyperferritinemia and pronounced hemophagocytosis help distinguish a subset of patients with a particularly inflammatory and deadly systemic inflammatory response syndrome. Two clinically similar disorders typify these hyperferritinemic syndromes: hemophagocytic lymphohistiocytosis (HLH) and macrophage activation syndrome (MAS). HLH is canonically associated with a complete disturbance of perforin/granzyme-mediated cytotoxicity, whereas MAS occurs in the context of the related rheumatic diseases systemic juvenile idiopathic arthritis and adult-onset Still's disease, with associated IL-1 family cytokine activation. In practice, however, there are accumulating lines of evidence for innate immune dysregulation in HLH as well as partial impairments of cytotoxicity in MAS, and these mechanisms likely represent only a fraction of the host and environmental factors driving hyperferritinemic inflammation. Herein, we present new findings that highlight the pathogenic differences between HLH and MAS, two conditions that present with life-threatening hyperinflammation, hyperferritinemia and hemophagocytosis.
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Affiliation(s)
- Grant S Schulert
- Division of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Scott W Canna
- RK Mellon Institute for Pediatric Research, Pittsburgh, PA, USA
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Shabani M, Razaghian A, Alimadadi H, Shiari R, Shahrooei M, Parvaneh N. Different phenotypes of the same XIAP mutation in a family: A case of XIAP deficiency with juvenile idiopathic arthritis. Pediatr Blood Cancer 2019; 66:e27593. [PMID: 30604482 DOI: 10.1002/pbc.27593] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 12/13/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Mahsima Shabani
- Division of Allergy and Clinical Immunology, Department of Pediatrics, Tehran University of Medical Sciences, Tehran, Iran.,Research Center for Immunodeficiencies, Tehran University of Medical Sciences, Tehran, Iran
| | - Anahita Razaghian
- Division of Allergy and Clinical Immunology, Department of Pediatrics, Tehran University of Medical Sciences, Tehran, Iran
| | - Hosein Alimadadi
- Department of Pediatric Gastroeneterology, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Shiari
- Department of Pediatric Rheumatology, Mofid Children Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Shahrooei
- Department of Microbiology and Immunology, Laboratory of Clinical Bacteriology and Mycology, KU Leuven, Leuven, Belgium.,Specialized Immunology Laboratory, Ahvaz, Iran
| | - Nima Parvaneh
- Division of Allergy and Clinical Immunology, Department of Pediatrics, Tehran University of Medical Sciences, Tehran, Iran.,Research Center for Immunodeficiencies, Tehran University of Medical Sciences, Tehran, Iran
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Sen ES, Steward CG, Ramanan AV. Diagnosing haemophagocytic syndrome. Arch Dis Child 2017; 102:279-284. [PMID: 27831908 DOI: 10.1136/archdischild-2016-310772] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 09/22/2016] [Accepted: 09/27/2016] [Indexed: 02/06/2023]
Abstract
Haemophagocytic syndrome, or haemophagocytic lymphohistiocytosis (HLH), is a hyperinflammatory disorder characterised by uncontrolled activation of the immune system. It can result from mutations in multiple genes involved in cytotoxicity or occur secondary to a range of infections, malignancies or autoimmune rheumatic diseases. In the latter case, it is also known as macrophage activation syndrome (MAS). Characteristic features are persistent fever, hepatosplenomegaly, petechial/purpuric rash, progressive cytopenias, coagulopathy, transaminitis, raised C reactive protein, falling erythrocyte sedimentation rate, hypertriglyceridaemia, hypofibrinogenaemia and extreme hyperferritinaemia often associated with multi-organ impairment. Distinguishing HLH from systemic sepsis can present a major challenge. Criteria for diagnosis and classification of HLH and MAS are available and a serum ferritin >10 000 µg/L is strongly supportive of HLH. Without early recognition and appropriate treatment, HLH is almost universally fatal. However, with prompt referral and advancements in treatment over the past two decades, outcomes have greatly improved.
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Affiliation(s)
- Ethan S Sen
- Department of Paediatric Rheumatology, Bristol Royal Hospital for Children, Bristol, UK
| | - Colin G Steward
- Department of Paediatric Haematology, Oncology and Bone Marrow Transplantation, Bristol Royal Hospital for Children, Bristol, UK
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Nielsen OH, LaCasse EC. How genetic testing can lead to targeted management of XIAP deficiency-related inflammatory bowel disease. Genet Med 2016; 19:133-143. [PMID: 27416006 DOI: 10.1038/gim.2016.82] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 04/29/2016] [Indexed: 02/07/2023] Open
Abstract
X-linked lymphoproliferative disease type 2 (XLP-2, OMIM 300635) is a primary immunodeficiency caused by the loss of X chromosome-linked inhibitor of apoptosis (XIAP), the X-linked inhibitor of apoptosis gene at Xq25. XLP-2 individuals are susceptible to several specific and potentially fatal infections, such as Epstein-Barr virus (EBV). Children with XIAP-related XLP-2 may present with either familial hemophagocytic lymphohistiocytosis, often triggered in response to EBV infection, or with a treatment-refractory severe pediatric form of inflammatory bowel disease (IBD) that might be diagnosed as Crohn disease. However, this monogenic cause of IBD is distinct from adult Crohn disease (a polygenic and multifactorial disease) in its etiology and responsiveness to therapy. XLP-2 and the associated IBD symptoms are managed by a reduced-intensity conditioning regimen with an allogeneic hematopoietic stem cell transplantation that causes resolution of gastrointestinal symptoms. Exome sequencing has enabled identification of XIAP-deficient diseased individuals and has altered their morbidity by providing potentially lifesaving strategies in a timely and effective manner. Here, we summarize XLP-2 IBD treatment history and patient morbidity/mortality since its original identification in 2006. Since XLP-2 is rare, cases are probably undergiagnosed or misdiagnosed. Consideration of XLP-2 in children with severe symptoms of IBD can prevent serious morbidities and mortality, avoid unnecessary procedures, and expedite specific targeted therapy.Genet Med 19 2, 133-143.
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Affiliation(s)
- Ole Haagen Nielsen
- Department of Gastroenterology, Medical Section, Herlev Hospital, University of Copenhagen, Herlev, Denmark
| | - Eric Charles LaCasse
- Apoptosis Research Centre, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
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