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Ramadoss I, Rengabashyam P, Seetharaman Varadhan M, Ponniah Subramanian AR. Macrophage activation syndrome as a presenting feature in juvenile systemic lupus erythematosus. Lupus 2024; 33:1254-1259. [PMID: 39109623 DOI: 10.1177/09612033241272972] [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: 09/19/2024]
Abstract
BACKGROUND Macrophage activation syndrome (MAS) is an acquired form of hemo phagocytic lymphohistiocytosis (HLH) and is usually associated with infections, autoimmune, auto inflammatory syndromes and malignancies. CASE DETAILS A 14 year old girl presented with sub-acute onset of fever with lymphadenopathy, pancytopenia,high ferritin values and a falling erythrocyte sedimentation rate. She was evaluated with relevant laboratory tests that was suggestive of systemic Lupus erythematosus and associated macrophage activation syndrome She recovered with immunosuppressive therapy and other supportive care. CONCLUSION There is a need for a high index of suspicion of occult MAS and MAS in patients with systemic lupus erythematosus as it may be an initial presentation. Delay in diagnosis and initiation of treatment can lead to a higher mortality.
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Affiliation(s)
- Ishwarya Ramadoss
- Institute of Rheumatology, Rajiv Gandhi Government General Hospital, Madras Medical College, Chennai, India
| | - Pirahalathan Rengabashyam
- Institute of Rheumatology, Rajiv Gandhi Government General Hospital, Madras Medical College, Chennai, India
| | | | - Arul R Ponniah Subramanian
- Institute of Rheumatology, Rajiv Gandhi Government General Hospital, Madras Medical College, Chennai, India
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Wang J, Rong W, Yan H. Eighty-six cases of clinical characteristics and outcomes of systemic lupus erythematosus-associated macrophage activation syndrome: A meta-analysis study. Immun Inflamm Dis 2024; 12:e1364. [PMID: 39110110 PMCID: PMC11304897 DOI: 10.1002/iid3.1364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 06/28/2024] [Accepted: 07/23/2024] [Indexed: 08/10/2024] Open
Abstract
OBJECTIVE To improve our understanding of systemic lupus erythematosus (SLE)-macrophage activation syndrome (MAS). METHODS A systematic review was performed, to retrieve all those papers on patients with SLE-MAS, in individual or aggregated form. The data in each of these medical records were extracted and analyzed to identify the characteristics of SLE-MAS. RESULTS A total of 86 SLE-MAS patients were included (25 males and 61 females. The mean (±standard error of the mean) age was 31.21 ± 1.694 years. MAS occurred as the initial presentation of SLE in 47 people (54.65%) and during the course of SLE in 39 (45.35%). A coinfection was reported in 23 (26.74%) patients. The mean Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) score was 16.54 ± 0.9462. Overall, 10 patients (11.63%) died. The SLEDAI-2K score was higher in patients with MAS as an initial manifestation of SLE than in those where MAS occurred during the course of SLE. The proportion of patients receiving steroid pulse therapy was lower in patients with coinfections. The deceased group demonstrated lower platelet and ferritin levels. Multiple regression analysis revealed that age and thrombocytopenia were independent factors associated with poor prognosis. In receiver operating characteristic analysis, a platelet count cutoff value of ≤47 × 109/L was a predictor of poor outcome. CONCLUSIONS SLE-MAS patients demonstrated high lupus activity, and lupus activity was especially higher in patients with MAS as an initial manifestation. Lupus activity was the predominant trigger of lupus MAS. Thrombocytopenia was an independent factor for poor prognosis.
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Affiliation(s)
- Jingya Wang
- Department of Rheumatology, Wuhu HospitalEast China Normal University (The Second People's Hospital of Wuhu)WuhuAnhuiChina
| | - Wei Rong
- Department of Rheumatology, Wuhu HospitalEast China Normal University (The Second People's Hospital of Wuhu)WuhuAnhuiChina
| | - Haotian Yan
- Department of Rheumatology, Wuhu HospitalEast China Normal University (The Second People's Hospital of Wuhu)WuhuAnhuiChina
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Sztajnbok F, Fonseca AR, Campos LR, Lino K, Rodrigues MCF, Silva RM, de Almeida RG, Perazzio SF, Carvalho MDFF. Hemophagocytic lymphohistiocytosis and macrophage activation syndrome: two rare sides of the same devastating coin. Adv Rheumatol 2024; 64:28. [PMID: 38627860 DOI: 10.1186/s42358-024-00370-2] [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: 01/12/2024] [Accepted: 04/02/2024] [Indexed: 04/19/2024] Open
Abstract
Hemophagocytic lymphohistiocytosis (HLH) is a rare genetic hyperinflammatory syndrome that occurs early in life. Macrophage activation syndrome (MAS) usually refers to a secondary form of HLH associated with autoimmunity, although there are other causes of secondary HLH, such as infections and malignancy. In this article, we reviewed the concepts, epidemiology, clinical and laboratory features, diagnosis, differential diagnosis, prognosis, and treatment of HLH and MAS. We also reviewed the presence of MAS in the most common autoimmune diseases that affect children. Both are severe diseases that require prompt diagnosis and treatment to avoid morbidity and mortality.
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Affiliation(s)
- Flavio Sztajnbok
- Department of Pediatrics, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
- Pediatric Rheumatology Division, Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.
- Rare Diseases Committee, Brazilian Society of Rheumatology (SBR), Rio de Janeiro, Brazil.
| | - Adriana Rodrigues Fonseca
- Department of Pediatrics, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto de Puericultura e Pediatria Martagão Gesteira, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leonardo Rodrigues Campos
- Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Niterói, Brazil
- Pediatric Rheumatology Committee, Sociedade de Reumatologia do Rio de Janeiro 2022-2024, Rio de Janeiro, Brazil
| | - Kátia Lino
- Hospital Universitário Antônio Pedro, Universidade Federal Fluminense, Niterói, Brazil
| | - Marta Cristine Félix Rodrigues
- Pediatric Rheumatology Division, Instituto de Puericultura e Pediatria Martagão Gesteira, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Rodrigo Moulin Silva
- Hospital Universitário Pedro Ernesto, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Rozana Gasparello de Almeida
- Instituto de Puericultura e Pediatria Martagão Gesteira, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sandro Félix Perazzio
- Rare Diseases Committee, Brazilian Society of Rheumatology (SBR), Rio de Janeiro, Brazil
- Division of Rheumatology, Universidade Federal de São Paulo (UNIFESP), Sao Paulo, Brazil
| | - Margarida de Fátima Fernandes Carvalho
- Rare Diseases Committee, Brazilian Society of Rheumatology (SBR), Rio de Janeiro, Brazil
- Division of Pediatric Rheumatology, Universidade Estadual de Londrina (UEL), Paraná, Brazil
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Minoia F, Ravelli A. Criteria for Cytokine Storm Syndromes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1448:59-71. [PMID: 39117808 DOI: 10.1007/978-3-031-59815-9_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
In the past two decades, there has been a great deal of work aimed to devise diagnostic guidelines, classification criteria, and diagnostic scores for cytokine storm syndromes (CSSs). The most notable effort has been the large-scale multinational study that led to the development of the 2016 classification criteria for macrophage activation syndrome (MAS) complicating systemic juvenile idiopathic arthritis (JIA). Future studies should scrutinize the validity of the proposed criteria, particularly in systemic JIA patients treated with biologics, in children with subtle or incomplete forms of MAS, and in patients with MAS complicating other rheumatologic disorders. More generic CSS criteria are also available but often lack sensitivity and specificity in a wide variety of patient populations and CSSs of different etiologies. The coronavirus disease 2019 (COVID-19)-related lung disease led to an evolution of the concept of a "cytokine storm." Emerging and unsolved challenges in the diagnosis of the different forms of CSSs highlight the need for diagnostic tools and well-established classification criteria to enable timely recognition and correct classification of patients.
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Affiliation(s)
- Francesca Minoia
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - Angelo Ravelli
- IRCCS Istituto Giannina Gaslini, Genoa, Italy
- Università degli Studi di Genova, Genoa, Italy
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Caricchio R, Gallucci S. Systemic Lupus Erythematosus and Cytokine Storm. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1448:355-364. [PMID: 39117826 DOI: 10.1007/978-3-031-59815-9_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
Systemic lupus erythematosus (SLE) is the prototype of autoimmune diseases and can manifest with a plethora of clinical signs and symptoms associated with a myriad of laboratory abnormalities. An infrequent but potentially lethal complication of SLE is macrophage activation syndrome (MAS). The diagnosis of MAS in SLE can be very challenging due to similarities in presentation of both flares and infections, such as fever, lymphadenopathy, splenomegaly, and cytopenias. These aggravating factors contribute to the increased risk of poor outcomes in SLE-associated MAS. Indeed, at the moment MAS remains invariably lethal if untreated and still has a high mortality rate with treatment. In this chapter, we discuss several aspects of MAS in the context of SLE and in particular, the pathogenesis of MAS in SLE, how MAS presents in pediatric versus adult SLE, and, finally, MAS treatment in SLE and future directions.
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Abstract
Cytokine storm syndrome (CSS), which is frequently fatal, has garnered increased attention with the ongoing coronavirus pandemic. A variety of hyperinflammatory conditions associated with multiorgan system failure can be lumped under the CSS umbrella, including familial hemophagocytic lymphohistiocytosis (HLH) and secondary HLH associated with infections, hematologic malignancies, and autoimmune and autoinflammatory disorders, in which case CSS is termed macrophage activation syndrome (MAS). Various classification and diagnostic CSS criteria exist and include clinical, laboratory, pathologic, and genetic features. Familial HLH results from cytolytic homozygous genetic defects in the perforin pathway employed by cytotoxic CD8 T lymphocytes and natural killer (NK) cells. Similarly, NK cell dysfunction is often present in secondary HLH and MAS, and heterozygous mutations in familial HLH genes are frequently present. Targeting overly active lymphocytes and macrophages with etoposide and glucocorticoids is the standard for treating HLH; however, more targeted and safer anticytokine (e.g., anti-interleukin-1, -6) approaches are gaining traction as effective alternatives.
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Affiliation(s)
- Randy Q Cron
- Department of Pediatrics, Division of Rheumatology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, Alabama, USA; .,Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, Alabama, USA
| | - Gaurav Goyal
- Department of Medicine, Division of Hematology-Oncology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, Alabama, USA
| | - W Winn Chatham
- Department of Medicine, Division of Clinical Immunology and Rheumatology, University of Alabama at Birmingham Heersink School of Medicine, Birmingham, Alabama, USA
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Hosahalli Vasanna S, Dalal J. Traffic jam within lymphocytes: A clinician's perspective. Front Immunol 2023; 13:1034317. [PMID: 36726976 PMCID: PMC9885010 DOI: 10.3389/fimmu.2022.1034317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 12/28/2022] [Indexed: 01/18/2023] Open
Abstract
With the discovery of novel diseases and pathways, as well as a new outlook on certain existing diseases, cellular trafficking disorders attract a great deal of interest and focus. Understanding the function of genes and their products in protein and lipid synthesis, cargo sorting, packaging, and delivery has allowed us to appreciate the intricate pathophysiology of these biological processes at the molecular level and the multi-system disease manifestations of these disorders. This article focuses primarily on lymphocyte intracellular trafficking diseases from a clinician's perspective. Familial hemophagocytic lymphohistiocytosis is the prototypical disease of abnormal vesicular transport in the lymphocytes. In this review, we highlight other mechanisms involved in cellular trafficking, including membrane contact sites, autophagy, and abnormalities of cytoskeletal structures affecting the immune cell function, based on a newer classification system, along with management aspects of these conditions.
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Affiliation(s)
- Smitha Hosahalli Vasanna
- Department of Pediatrics, Division of Pediatric Hematology Oncology, University Hospitals Rainbow Babies & Children's Hospital, Cleveland, OH, United States,School of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Jignesh Dalal
- Department of Pediatrics, Division of Pediatric Hematology Oncology, University Hospitals Rainbow Babies & Children's Hospital, Cleveland, OH, United States,School of Medicine, Case Western Reserve University, Cleveland, OH, United States,*Correspondence: Jignesh Dalal,
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Abughazaleh S, Alsakarneh S, Hattar M, Jaber F, Palmer Q, Ghoz H. Systemic Lupus Erythematosus in Disguise: Acute Pancreatitis as Initial Presentation. J Investig Med High Impact Case Rep 2023; 11:23247096231185480. [PMID: 37421299 PMCID: PMC10331329 DOI: 10.1177/23247096231185480] [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: 03/28/2023] [Revised: 06/11/2023] [Accepted: 06/13/2023] [Indexed: 07/10/2023] Open
Abstract
Macrophage activation syndrome (MAS) can rarely coexist with lupus pancreatitis. We report on a 20-year-old woman with abdominal pain, nausea, and vomiting. Laboratories were notable for pancytopenia, elevated liver enzymes, elevated ferritin, lipase, and triglycerides. Chest and abdominal computerized tomography (CT) scans revealed bilateral axillary lymphadenopathy, patchy lower lobe consolidations, small pleural effusions, ascites, and splenomegaly. Peritoneal fluid cytology showed lymphocytes and histiocytes with hemophagocytic changes. Immunological workup met the criteria for systemic lupus erythematosus (SLE). Pulse-dosed steroids relieved her condition. Given the high mortality rate associated with MAS, early detection of concomitant pancreatitis and MAS in the context of underlying SLE is critical.
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Affiliation(s)
| | | | - Mariana Hattar
- The Tufts University School of Medicine, Boston, MA, USA
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Schulert GS. The Big Bad Wolf: Macrophage Activation Syndrome in Childhood-Onset Systemic Lupus Erythematosus. J Rheumatol 2022; 49:1082-1084. [PMID: 36271722 DOI: 10.3899/jrheum.220780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Affiliation(s)
- Grant S Schulert
- G.S. Schulert, MD, PhD, Associate Professor, Division of Rheumatology, Cincinnati Children's Hospital Medical Center and Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
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10
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Ruscitti P, Di Cola I, Di Muzio C, Italiano N, Ursini F, Giacomelli R, Cipriani P. Expanding the spectrum of the hyperferritinemic syndrome, from pathogenic mechanisms to clinical observations, and therapeutic implications. Autoimmun Rev 2022; 21:103114. [PMID: 35595050 DOI: 10.1016/j.autrev.2022.103114] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/15/2022] [Indexed: 01/19/2023]
Abstract
From the introduction of hyperferritinemic syndrome concept, a growing body of evidence has suggested the role of ferritin as a pathogenic mediator and a relevant clinical feature in the management of patients with inflammatory diseases. From a pathogenic point of view, ferritin may directly stimulate the aberrant immune response by triggering the production of pro-inflammatory mediators in inducing a vicious pathogenic loop and contributing to the occurrence of cytokine storm syndrome. The latter has been recently defined as a clinical picture characterised by elevated circulating cytokine levels, acute systemic inflammatory symptoms, and secondary organ dysfunction beyond that which could be attributed to a normal response to a pathogen It is noteworthy that the occurrence of hyperferritinemia may be correlated with the development of the cytokine storm syndrome in the context of an inflammatory disease. In addition to adult onset Still's disease, macrophage activation syndrome, catastrophic anti-phospholipids syndrome, and septic shock, recent evidence has suggested this association between ferritin and life-threatening evolution in patients with systemic lupus erythematosus, with anti-MDA5 antibodies in the context of poly-dermatomyositis, with severe COVID-19, and with multisystem inflammatory syndrome. The possible underlying common inflammatory mechanisms, associated with hyperferritinemia, may led to the similar clinical picture observed in these patients. Furthermore, similar therapeutic strategies could be suggested inhibiting pro-inflammatory cytokines and improving long-term outcomes in these disorders. Thus, it could be possible to expand the spectrum of the hyperferritinemic syndrome to those diseases burdened by a dreadful clinical picture correlated with hyperferritinemia and the occurrence of the cytokine storm syndrome. In addition, the assessment of ferritin may provide useful information to the physicians in clinical practice to manage these patients. Therefore, ferritin may be considered a relevant clinical feature to be used as biomarker in dissecting the unmet needs in the management of these disorders. Novel evidence may thus support an expansion of the spectrum of the hyperferritinemic syndrome to these diseases burdened by a life-threatening clinical picture correlated with hyperferritinemia and the occurrence of the cytokine storm syndrome.
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Affiliation(s)
- Piero Ruscitti
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy.
| | - Ilenia Di Cola
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Claudia Di Muzio
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Noemi Italiano
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
| | - Francesco Ursini
- Rheumatology Unit, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum University of Bologna, Bologna, Italy
| | - Roberto Giacomelli
- Rheumatology and Immunology Unit, Department of Medicine, University of Rome Campus Biomedico, Rome, Italy
| | - Paola Cipriani
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, L'Aquila, Italy
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Smitherman EA, Cron RQ. Hyperferritinemia Wins Again: Defining Macrophage Activation Syndrome in Pediatric Systemic Lupus Erythematosus. J Rheumatol 2021; 48:1355-1357. [PMID: 34329185 DOI: 10.3899/jrheum.210024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Emily A Smitherman
- E.A. Smitherman, MD, MS, Assistant Professor, R.Q. Cron, MD, PhD, Professor, Division of Pediatric Rheumatology, University of Alabama at Birmingham, Birmingham, Alabama, USA.
| | - Randy Q Cron
- E.A. Smitherman, MD, MS, Assistant Professor, R.Q. Cron, MD, PhD, Professor, Division of Pediatric Rheumatology, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Abdirakhmanova A, Sazonov V, Mukusheva Z, Assylbekova M, Abdukhakimova D, Poddighe D. Macrophage Activation Syndrome in Pediatric Systemic Lupus Erythematosus: A Systematic Review of the Diagnostic Aspects. Front Med (Lausanne) 2021; 8:681875. [PMID: 34150813 PMCID: PMC8211727 DOI: 10.3389/fmed.2021.681875] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 04/20/2021] [Indexed: 01/12/2023] Open
Abstract
Macrophage Activation Syndrome (MAS) is a very severe complication of different rheumatic diseases, including pediatric Systemic Lupus Erythematosus (pSLE). MAS is not considered as a frequent complication of pSLE; however, its occurrence could be under-estimated and the diagnosis can be challenging. In order to address this issue, we performed a systematic review of the available medical literature, aiming to retrieve all those papers providing diagnostic (clinical/laboratory) data on patients with pSLE-related MAS, in individual or aggregated form. The selected case reports and series provided a pool of 46 patients, accounting for 48 episodes of MAS in total. We re-analyzed these patients in light of the diagnostic criteria for MAS validated in systemic Juvenile Idiopathic Arthritis (sJIA) patients and the preliminary diagnostic criteria for MAS in pSLE, respectively. Five clinical studies were also selected and used to support this analysis. This systematic review confirms that MAS diagnosis in pSLE patients is characterized by several diagnostic challenges, which could lead to delayed diagnosis and/or under-estimation of this complication. Specific criteria should be considered to diagnose MAS in different rheumatic diseases; as regards pSLE, the aforementioned preliminary criteria for MAS in pSLE seem to perform better than the sJIA-related MAS criteria, because of a lower ferritin cut-off.
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Affiliation(s)
- Altynay Abdirakhmanova
- Department of Medicine, Nazarbayev University School of Medicine (NUSOM), Nur-Sultan, Kazakhstan
| | - Vitaliy Sazonov
- Department of Biomedical Sciences, Nazarbayev University School of Medicine (NUSOM), Nur-Sultan, Kazakhstan
| | - Zaure Mukusheva
- Program of Pediatric Rheumatology, Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center, Nur-Sultan, Kazakhstan
| | - Maykesh Assylbekova
- Program of Pediatric Rheumatology, Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center, Nur-Sultan, Kazakhstan
| | - Diyora Abdukhakimova
- Department of Medicine, Nazarbayev University School of Medicine (NUSOM), Nur-Sultan, Kazakhstan
| | - Dimitri Poddighe
- Department of Medicine, Nazarbayev University School of Medicine (NUSOM), Nur-Sultan, Kazakhstan.,Department of Pediatrics, National Research Center for Maternal and Child Health, University Medical Center, Nur-Sultan, Kazakhstan
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