1
|
Cao P, Zhang X, Fu Y, Wang H, Yu Y, Zhu X, Jiang J, Zhai X. XMEN-associated Systemic EBV-positive T-cell Lymphoma of Childhood: Report of Two Cases and Literature Review. J Pediatr Hematol Oncol 2024; 46:356-363. [PMID: 39196630 DOI: 10.1097/mph.0000000000002940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 07/23/2024] [Indexed: 08/29/2024]
Abstract
X-linked immunodeficiency with magnesium defect, Epstein-Barr virus (EBV) infection, and neoplasia (XMEN) is an extremely rare inborn error of immunity (IEI) caused by X-linked recessive inheritance and loss-of-function mutations in the MAGT1 gene, resulting in magnesium ion channel defects. This article reports 2 cases of systemic EBV-positive T-cell Lymphoma of childhood (SETLC) associated with XMEN, which have not been reported before. Whole exome sequencing (WES) in their family revealed previously unreported MAGT1 gene mutations (c.77T>C, p.I26T; c.956-957del: p.Ser319Tyrfs) inherited from their mothers. These mutations expand the spectrum of gene mutations in XMEN disease. The importance of genetic testing for MAGT1 mutations in the initial diagnosis of SETLC was emphasized. We also review the literature on this uncommon IEI.
Collapse
Affiliation(s)
- Ping Cao
- Department of Hematology, National Children's Medical Center Children's Hospital of Fudan University, Shanghai, China
| | | | | | | | | | | | | | | |
Collapse
|
2
|
Aboluwarin O, Kyaw KY, Odega E, Huet H, Nambi R. Recalcitrant oropharyngeal and genital warts in XMEN disease. Clin Exp Dermatol 2024; 49:1281-1283. [PMID: 38660771 DOI: 10.1093/ced/llae149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/01/2024] [Accepted: 04/18/2024] [Indexed: 04/26/2024]
Abstract
The identification of primary immunodeficiencies is often delayed because of the inherent clinical heterogeneity and gaps in clinicians’ understanding of the clinical landscape. We present an unusual case of a patient with X-linked immunodeficiency with magnesium defect, Epstein–Barr virus infection and neoplasia (XMEN) disease. To the best of our knowledge, this is the first case report of an individual with XMEN disease presenting with recalcitrant oropharyngeal and genital warts.
Collapse
Affiliation(s)
| | - Khin Y Kyaw
- University Hospitals Derby and Burton NHS Foundation Trust, Derby, UK
| | - Emmanuel Odega
- University Hospitals Derby and Burton NHS Foundation Trust, Derby, UK
| | - Hannah Huet
- University Hospitals Derby and Burton NHS Foundation Trust, Derby, UK
| | - Rabi Nambi
- University Hospitals Derby and Burton NHS Foundation Trust, Derby, UK
| |
Collapse
|
3
|
Golloshi K, Mitchell W, Kumar D, Malik S, Parikh S, Aljudi AA, Castellino SM, Chandrakasan S. HLH and Recurrent EBV Lymphoma as the presenting manifestation of MAGT1 Deficiency: A Systematic Review of the Expanding Disease Spectrum. J Clin Immunol 2024; 44:153. [PMID: 38896122 DOI: 10.1007/s10875-024-01749-y] [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: 01/26/2024] [Accepted: 05/31/2024] [Indexed: 06/21/2024]
Abstract
Magnesium transporter 1 (MAGT1) gene loss-of-function variants lead to X-linked MAGT1 deficiency with increased susceptibility to EBV infection and N-glycosylation defect (XMEN), a condition with a variety of clinical and immunological effects. In addition, MAGT1 deficiency has been classified as a congenital disorder of glycosylation (CDG) due to its unique role in glycosylation of multiple substrates including NKG2D, necessary for viral protection. Due to the predisposition for EBV, this etiology has been linked with hemophagocytic lymphohistiocytosis (HLH), however only limited literature exists. Here we present a complex case with HLH and EBV-driven classic Hodgkin lymphoma (cHL) as the presenting manifestation of underlying immune defect. However, the patient's underlying immunodeficiency was not identified until his second recurrence of Hodgkin disease, recurrent episodes of Herpes Zoster, and after he had undergone autologous hematopoietic stem cell transplant (HSCT) for refractory Hodgkin lymphoma. This rare presentation of HLH and recurrent lymphomas without some of the classical immune deficiency manifestations of MAGT1 deficiency led us to review the literature for similar presentations and to report the evolving spectrum of disease in published literature. Our systematic review showcased that MAGT1 predisposes to multiple viruses (including EBV) and adds risk of viral-driven neoplasia. The roles of MAGT1 in the immune system and glycosylation were highlighted through the multiple organ dysfunction showcased by the previously validated Immune Deficiency and Dysregulation Activity (IDDA2.1) score and CDG-specific Nijmegen Pediatric CDG Rating Scale (NPCRS) score for the patient cohort in the systematic review.
Collapse
Affiliation(s)
| | - William Mitchell
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta and Emory University, Atlanta, GA, USA
| | - Deepak Kumar
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta and Emory University, Atlanta, GA, USA
| | - Sakshi Malik
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta and Emory University, Atlanta, GA, USA
| | - Suhag Parikh
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta and Emory University, Atlanta, GA, USA
| | - Ahmed A Aljudi
- Department of Pathology and Laboratory Medicine, Children's Healthcare of Atlanta, Atlanta, GA, USA
| | - Sharon M Castellino
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta and Emory University, Atlanta, GA, USA
| | - Shanmuganathan Chandrakasan
- Department of Pediatrics, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta and Emory University, Atlanta, GA, USA.
| |
Collapse
|
4
|
Aliyath A, Eni-Olotu A, Donaldson N, Trivedi P. Malignancy-associated immune responses: Lessons from human inborn errors of immunity. Immunology 2023; 170:319-333. [PMID: 37335539 DOI: 10.1111/imm.13675] [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: 03/03/2023] [Accepted: 06/09/2023] [Indexed: 06/21/2023] Open
Abstract
It is widely understood that cancer is a significant cause of morbidity and mortality worldwide. Despite numerous available treatments, prognosis for many remains poor, thus, the development of novel therapies remains essential. Given the incredible success of many immunotherapies in this field, the important contribution of the immune system to the control, and elimination, of malignancy is clear. While many immunotherapies target higher-order pathways, for example, through promoting T-cell activation via immune checkpoint blockade, the potential to target specific immunological pathways is largely not well researched. Precisely understanding how immunity can be tailored to respond to specific challenges is an exciting idea with great potential, and may trigger the development of new therapies for cancer. Inborn Errors of Immunity (IEI) are a group of rare congenital disorders caused by gene mutations that result in immune dysregulation. This heterogeneous group, spanning widespread, multisystem immunopathology to specific immune cell defects, primarily manifest in immunodeficiency symptoms. Thus, these patients are particularly susceptible to life-threatening infection, autoimmunity and malignancy, making IEI an especially complex group of diseases. While precise mechanisms of IEI-induced malignancy have not yet been fully elucidated, analysis of these conditions can highlight the importance of particular genes, and downstream immune responses, in carcinogenesis and may help inform mechanisms which can be utilised in novel immunotherapies. In this review, we examine the links between IEIs and cancer, establishing potential connections between immune dysfunction and malignancy and suggesting roles for specific immunological mechanisms involved in preventing carcinogenesis, thus, guiding essential future research focused on cancer immunotherapy and providing valuable insight into the workings of the immune system in both health and disease.
Collapse
|
5
|
Desimio MG, Covino DA, Rivalta B, Cancrini C, Doria M. The Role of NK Cells in EBV Infection and Related Diseases: Current Understanding and Hints for Novel Therapies. Cancers (Basel) 2023; 15:cancers15061914. [PMID: 36980798 PMCID: PMC10047181 DOI: 10.3390/cancers15061914] [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: 02/17/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
The Epstein-Barr virus (EBV) is a ubiquitous herpesvirus most often transmitted during infancy and infecting the vast majority of human beings. Usually, EBV infection is nearly asymptomatic and results in life-long persistency of the virus in a latent state under the control of the host immune system. Yet EBV can cause an acute infectious mononucleosis (IM), particularly in adolescents, and is associated with several malignancies and severe diseases that pose a serious threat to individuals with specific inborn error of immunity (IEI). While there is a general consensus on the requirement for functional CD8 T cells to control EBV infection, the role of the natural killer (NK) cells of the innate arm of immunity is more enigmatic. Here we provide an overview of the interaction between EBV and NK cells in the immunocompetent host as well as in the context of primary and secondary immunodeficiencies. Moreover, we report in vitro data on the mechanisms that regulate the capacity of NK cells to recognize and kill EBV-infected cell targets and discuss the potential of recently optimized NK cell-based immunotherapies for the treatment of EBV-associated diseases.
Collapse
Affiliation(s)
- Maria G Desimio
- Primary Immunodeficiency Research Unit, Bambino Gesù Children's Hospital, IRCCS, 00165 Rome, Italy
| | - Daniela A Covino
- Primary Immunodeficiency Research Unit, Bambino Gesù Children's Hospital, IRCCS, 00165 Rome, Italy
| | - Beatrice Rivalta
- Primary Immunodeficiency Research Unit, Bambino Gesù Children's Hospital, IRCCS, 00165 Rome, Italy
- Department of Systems Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Caterina Cancrini
- Primary Immunodeficiency Research Unit, Bambino Gesù Children's Hospital, IRCCS, 00165 Rome, Italy
- Department of Systems Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Margherita Doria
- Primary Immunodeficiency Research Unit, Bambino Gesù Children's Hospital, IRCCS, 00165 Rome, Italy
| |
Collapse
|
6
|
Chen S, Wang X, Sun C, Zhao CB, Lin J. MAGT1 Gene Mutation is Associated with Myositis and CD127 Expression Downregulation. J Clin Immunol 2023; 43:315-318. [PMID: 36331720 DOI: 10.1007/s10875-022-01384-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 10/17/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Sheng Chen
- Department of Neurology, Huashan Hospital Fudan University, No.12 Middle Wulumuqi Road, Shanghai, China
- Department of Neurology, Fujian Medical University Union Hospital, Fuzhou, China
- Institute of Clinical Neurology, Fujian Medical University, Fuzhou, China
| | - Xuan Wang
- Department of Rheumatology and Immunology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chong Sun
- Department of Neurology, Huashan Hospital Fudan University, No.12 Middle Wulumuqi Road, Shanghai, China
| | - Chong-Bo Zhao
- Department of Neurology, Huashan Hospital Fudan University, No.12 Middle Wulumuqi Road, Shanghai, China
| | - Jie Lin
- Department of Neurology, Huashan Hospital Fudan University, No.12 Middle Wulumuqi Road, Shanghai, China.
| |
Collapse
|
7
|
Münz C. Immune checkpoints in T cells during oncogenic γ-herpesvirus infections. J Med Virol 2023; 95:e27840. [PMID: 35524342 PMCID: PMC9790391 DOI: 10.1002/jmv.27840] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/02/2022] [Accepted: 05/05/2022] [Indexed: 01/11/2023]
Abstract
Epstein-Barr virus (EBV) and Kaposi sarcoma-associated herpesvirus (KSHV) are two persistent oncogenic γ-herpesviruses with an exclusive tropism for humans. They cause cancers of lymphocyte, epithelial and endothelial cell origin, such as Burkitt's and Hodgkin's lymphoma, primary effusion lymphoma, nasopharyngeal carcinoma, and Kaposi sarcoma. Mutations in immune-related genes but also adverse events during immune checkpoint inhibition in cancer patients have revealed molecular requirements for immune control of EBV and KSHV. These include costimulatory and coinhibitory receptors on T cells that are currently explored or already therapeutically targeted in tumor patients. This review discusses these co-receptors and their influence on EBV- and KSHV-associated diseases. The respective studies reveal surprising specificities of some of these receptors for immunity to these tumor viruses, benefits of their blockade for some but not other virus-associated diseases, and that EBV- and KSHV-specific immune control should be monitored during immune checkpoint inhibition to prevent adverse events that might be associated with their reactivation during treatment.
Collapse
Affiliation(s)
- Christian Münz
- Viral Immunobiology Department, Institute of Experimental ImmunologyUniversity of ZürichZürichSwitzerland
| |
Collapse
|
8
|
Barmettler S, Sharapova SO, Milota T, Greif PA, Magg T, Hauck F. Genomics Driving Diagnosis and Treatment of Inborn Errors of Immunity With Cancer Predisposition. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2022; 10:1725-1736.e2. [PMID: 35364342 DOI: 10.1016/j.jaip.2022.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/17/2022] [Accepted: 03/18/2022] [Indexed: 12/14/2022]
Abstract
Inborn errors of immunity (IEI) are genetically and clinically heterogeneous disorders that, in addition to infection susceptibility and immune dysregulation, can have an enhanced cancer predisposition. The increasing availability of upfront next-generation sequencing diagnostics in immunology and oncology have uncovered substantial overlap of germline and somatic genetic conditions that can result in immunodeficiency and cancer. However, broad application of unbiased genetics in these neighboring disciplines still needs to be deployed, and joined therapeutic strategies guided by germline and somatic genetic risk factors are lacking. We illustrate the current difficulties encountered in clinical practice, summarize the historical development of pathophysiological concepts of cancer predisposition, and review select genetic, molecular, and cellular mechanisms of well-defined and illustrative disease entities such as DNA repair defects, combined immunodeficiencies with Epstein-Barr virus susceptibility, autoimmune lymphoproliferative syndromes, regulatory T-cell disorders, and defects in cell intrinsic immunity. We review genetic variants that, when present in the germline, cause IEI with cancer predisposition but, when arising as somatic variants, behave as oncogenes and cause specific cancer entities. We finally give examples of small molecular compounds that are developed and studied to target genetically defined cancers but might also proof useful to treat IEI.
Collapse
Affiliation(s)
- Sara Barmettler
- Allergy and Clinical Immunology Unit, Division of Rheumatology, Allergy, & Immunology, Massachusetts General Hospital, Boston, Mass
| | - Svetlana O Sharapova
- Research Department, Belarusian Research Center for Pediatric Oncology, Hematology and Immunology, Minsk, Belarus
| | - Tomas Milota
- Department of Immunology, Second Faculty of Medicine, Charles University Hospital and Motol University Hospital, Prague, Czechia
| | - Philipp A Greif
- Department of Medicine III, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany; German Cancer Consortium (DKTK), partner site Munich, 81377 Munich, Germany; German Cancer Research Center (DKFZ), 69121 Heidelberg, Germany
| | - Thomas Magg
- Division of Pediatric Immunology and Rheumatology, Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Fabian Hauck
- Division of Pediatric Immunology and Rheumatology, Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany.
| |
Collapse
|
9
|
Iyengar VV, Chougule A, Gowri V, Taur P, Prabhu S, Bodhanwala M, Bargir UA, Madkaikar M, Desai MM. XMEN saved by magnesium. Scand J Immunol 2022; 95:e13154. [PMID: 35266176 DOI: 10.1111/sji.13154] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/16/2022] [Accepted: 03/03/2022] [Indexed: 01/29/2023]
Affiliation(s)
- Vaishnavi V Iyengar
- Department of Immunology, Bai Jerbai Wadia Hospital for Children, Mumbai, India
| | - Akshaya Chougule
- Department of Immunology, Bai Jerbai Wadia Hospital for Children, Mumbai, India
| | - Vijaya Gowri
- Department of Immunology, Bai Jerbai Wadia Hospital for Children, Mumbai, India
| | - Prasad Taur
- Department of Immunology, Bai Jerbai Wadia Hospital for Children, Mumbai, India
| | - Shakuntala Prabhu
- Department of Immunology, Bai Jerbai Wadia Hospital for Children, Mumbai, India
| | - Minnie Bodhanwala
- Department of Immunology, Bai Jerbai Wadia Hospital for Children, Mumbai, India
| | - Umair A Bargir
- National Institute of Immunohaematology, ICMR, KEM Hospital, Mumbai, India
| | - Manisha Madkaikar
- National Institute of Immunohaematology, ICMR, KEM Hospital, Mumbai, India
| | - Mukesh M Desai
- Department of Immunology, Bai Jerbai Wadia Hospital for Children, Mumbai, India
| |
Collapse
|
10
|
Magnesium for T cells: strong to the finish! Trends Immunol 2022; 43:277-279. [DOI: 10.1016/j.it.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 11/23/2022]
|
11
|
Münz C. Natural killer cell responses to human oncogenic γ-herpesvirus infections. Semin Immunol 2022; 60:101652. [PMID: 36162228 DOI: 10.1016/j.smim.2022.101652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/15/2022] [Accepted: 09/12/2022] [Indexed: 01/15/2023]
Abstract
The two γ-herpesviruses Epstein Barr virus (EBV) and Kaposi sarcoma associated herpesvirus (KSHV) are each associated with more than 1% of all tumors in humans. While EBV establishes persistent infection in nearly all adult individuals, KSHV benefits from this widespread EBV prevalence for its own persistence. Interestingly, EBV infection expands early differentiated NKG2A+KIR- NK cells that protect against lytic EBV infection, while KSHV co-infection drives accumulation of poorly functional CD56-CD16+ NK cells. Thus persistent γ-herpesvirus infections are sculptors of human NK cell repertoires and the respectively stimulated NK cell subsets should be considered for immunotherapies of EBV and KSHV associated malignancies.
Collapse
Affiliation(s)
- Christian Münz
- Viral Immunobiology, Institute of Experimental Immunology, University of Zürich, Switzerland.
| |
Collapse
|
12
|
Lack of NKG2D in MAGT1-deficient patients is caused by hypoglycosylation. Hum Genet 2022; 141:1279-1286. [PMID: 35182234 DOI: 10.1007/s00439-021-02400-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 11/06/2021] [Indexed: 12/20/2022]
Abstract
Mutations in the X-linked gene MAGT1 cause a Congenital Disorder of Glycosylation (CDG), with two distinct clinical phenotypes: a primary immunodeficiency (XMEN disorder) versus intellectual and developmental disability. It was previously established that MAGT1 deficiency abolishes steady-state expression of the immune response protein NKG2D (encoded by KLRK1) in lymphocytes. Here, we show that the reduced steady-state levels of NKG2D are caused by hypoglycosylation of the protein and we pinpoint the exact site that is underglycosylated in MAGT1-deficient patients. Furthermore, we challenge the possibility that supplementation with magnesium restores NKG2D levels and show that the addition of this ion does not significantly improve NKG2D steady-state expression nor does it rescue the hypoglycosylation defect in CRISPR-engineered human cell lines. Moreover, magnesium supplementation of an XMEN patient did not result in restoration of NKG2D expression on the cell surface of lymphocytes. In summary, we demonstrate that in MAGT1-deficient patients, the lack of NKG2D is caused by hypoglycosylation, further elucidating the pathophysiology of XMEN/MAGT1-CDG.
Collapse
|
13
|
Peng X, Lu Y, Wang H, Wu B, Gan M, Xu S, Zhuang D, Wang J, Sun J, Wang X, Zhou W. Further Delineation of the Spectrum of XMEN Disease in Six Chinese Pediatric Patients. Front Genet 2022; 13:768000. [PMID: 35145548 PMCID: PMC8821886 DOI: 10.3389/fgene.2022.768000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 01/05/2022] [Indexed: 11/13/2022] Open
Abstract
X-linked MAGT1 deficiency with increased susceptibility to EBV-infection and N-linked glycosylation defect (XMEN) disease is a primary immunodeficiency caused by loss-of-function variants in the MAGT1 gene. Only two patients from one family have been diagnosed with XMEN in China. In this study, we retrospectively analyzed the genetic, clinical, and immunological characteristics of six pediatric patients in a Chinese cohort. Medical records were retrieved, immunological phenotypes were assessed, and infectious microbes in patients were detected. Six male patients (mean age, 6.3 years) from five unrelated families were genetically diagnosed as XMEN. Five patients presented with a major complaint of elevated liver enzymes, while one patient was referred for recurrent fever, cough and skin rash. Five patients developed EBV viremia, and one patient developed non-Hodgkin’s lymphoma. Histopathological findings from liver biopsy tissues showed variable hepatic steatosis, fibrosis, inflammatory infiltration, and glycogenosis. Immune phenotypes included CD4 T-cell lymphopenia, elevated B cells, inverted CD4/CD8 ratios, and elevated αβDNTs. No pathogenic microbes other than EBV were identified in these patients. This study reports the clinical and molecular features of Chinese patients with XMEN. For patients with transaminase elevation, chronic EBV infection and EBV-associated lymphoproliferative disease, the possibility of XMEN should be considered in addition to isolated liver diseases.
Collapse
Affiliation(s)
- Xiaomin Peng
- Center for Molecular Medicine of Children’s Hospital of Fudan University and National Children’s Medical Center, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Yi Lu
- Center for Pediatric Liver Diseases, Children’s Hospital of Fudan University and National Children’s Medical Center, Shanghai, China
| | - Huijun Wang
- Center for Molecular Medicine, Key Laboratory of Birth Defects, Pediatrics Research Institute, Children’s Hospital of Fudan University and National Children’s Medical Center, Shanghai, China
| | - Bingbing Wu
- Center for Molecular Medicine, Key Laboratory of Birth Defects, Pediatrics Research Institute, Children’s Hospital of Fudan University and National Children’s Medical Center, Shanghai, China
| | - Mingyu Gan
- Center for Molecular Medicine, Key Laboratory of Birth Defects, Pediatrics Research Institute, Children’s Hospital of Fudan University and National Children’s Medical Center, Shanghai, China
| | - Suzhen Xu
- Center for Molecular Medicine, Key Laboratory of Birth Defects, Pediatrics Research Institute, Children’s Hospital of Fudan University and National Children’s Medical Center, Shanghai, China
| | - Deyi Zhuang
- Department of Pediatrics, Xiamen Children’s Hospital, Xiamen, China
| | - Jianshe Wang
- Center for Pediatric Liver Diseases, Children’s Hospital of Fudan University and National Children’s Medical Center, Shanghai, China
| | - Jinqiao Sun
- Department of Clinical Immunology, Children’s Hospital of Fudan University and National Children’s Medical Center, Shanghai, China
| | - Xiaochuan Wang
- Department of Clinical Immunology, Children’s Hospital of Fudan University and National Children’s Medical Center, Shanghai, China
- *Correspondence: Xiaochuan Wang, ; Wenhao Zhou,
| | - Wenhao Zhou
- Center for Molecular Medicine of Children’s Hospital of Fudan University and National Children’s Medical Center, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
- *Correspondence: Xiaochuan Wang, ; Wenhao Zhou,
| |
Collapse
|