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Lien NTK, Van Anh NT, Chi LQ, Le NNQ, Huyen TT, Mai NTP, Van Tung N, Hoang NH. Two novel CD40LG gene mutations causing X-linked hyper IgM syndrome in Vietnamese patients. Clin Exp Med 2023; 23:157-161. [PMID: 34842998 DOI: 10.1007/s10238-021-00774-0] [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] [Received: 07/18/2021] [Accepted: 10/30/2021] [Indexed: 11/30/2022]
Abstract
The X-linked hyper IgM syndrome is a primary immunodeficiency disorder (PID) due to mutations in the CD40LG gene. Hyper IgM syndrome is characterized by the absence or decreased levels of IgG and IgA and normal or elevated IgM levels in serum. Affected patients become susceptible to infections such as pneumonia, diarrhea, and skin ulcer types. Hematopoietic stem cell transplantation is the only treatment currently available and ideally performed before the age of 10 years. Early, accurate diagnosis will contribute to the effective treatment for patients with hyper IgM. The patients from different Vietnamese families who have been diagnosed with hyper IgM at The Allergy, Immunology and Rheumatology Department, Vietnam National Hospital Pediatrics, were performed a genetic analysis using whole exome sequencing. The mutations were confirmed by the Sanger sequencing method in patients and their families. The influence of the mutations was predicted with the in silico analysis tools: PROVEAN, SIFT, PolyPhen-2, and MutationTaster. In this study, two novel mutations (p.Thr254fs and p.Leu138Phe) in the CD40LG gene were found in Vietnamese patients with X-linked hyper IgM syndrome. Our results contribute to the general understanding of the etiology of the disease and can help diagnose the different forms of PID.
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Affiliation(s)
- Nguyen Thi Kim Lien
- Institute of Genome Research, Vietnam Academy of Science and Technology, 18 - Hoang Quoc Viet str., Caugiay, Hanoi, Vietnam
| | - Nguyen Thi Van Anh
- Allergy, Immunology and Rheumatology Department, Vietnam National Hospital Pediatrics, 18/879 La Thanh str., Dongda, Hanoi, Vietnam
| | - Le Quynh Chi
- Allergy, Immunology and Rheumatology Department, Vietnam National Hospital Pediatrics, 18/879 La Thanh str., Dongda, Hanoi, Vietnam
| | - Nguyen Ngoc Quynh Le
- Allergy, Immunology and Rheumatology Department, Vietnam National Hospital Pediatrics, 18/879 La Thanh str., Dongda, Hanoi, Vietnam
| | - Thuc Thanh Huyen
- Allergy, Immunology and Rheumatology Department, Vietnam National Hospital Pediatrics, 18/879 La Thanh str., Dongda, Hanoi, Vietnam
| | - Nguyen Thi Phuong Mai
- Human Genetics Department, Vietnam National Hospital Pediatrics, 18/879 La Thanh str., Dongda, Hanoi, Vietnam
| | - Nguyen Van Tung
- Institute of Genome Research, Vietnam Academy of Science and Technology, 18 - Hoang Quoc Viet str., Caugiay, Hanoi, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 - Hoang Quoc Viet str., Cau Giay, Ha Noi, Vietnam
| | - Nguyen Huy Hoang
- Institute of Genome Research, Vietnam Academy of Science and Technology, 18 - Hoang Quoc Viet str., Caugiay, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 - Hoang Quoc Viet str., Cau Giay, Ha Noi, Vietnam.
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Fekrvand S, Mozdarani H, Delavari S, Sohani M, Nazari F, Kiaee F, Bagheri Y, Azizi G, Hassanpour G, Mozdarani S, Abolhassani H, Aghamohammadi A, Yazdani R. Evaluation of Radiation Sensitivity in Patients with Hyper IgM Syndrome. Immunol Invest 2020; 50:580-596. [PMID: 32584193 DOI: 10.1080/08820139.2020.1779288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND HIGM syndrome is a rare form of primary immunodeficiencies characterized by normal/increased amounts of serum IgM and decreased serum levels of other switched immunoglobulin classes. Since the affected patients are continuously infected with various types of pathogens and are susceptible for cancers, diagnostic and therapeutic tests including imaging techniques are recommended for the diagnosis and treatment of these patients, which predispose them to higher accumulated doses of radiation. Given the evidence of class switching recombination machinery defect and its association with an increased rate of DNA repair, we aimed to evaluate radiation sensitivity among a group of patients diagnosed with HIGM syndrome. METHODS 19 HIGM patients (14 CD40 L and 3 AID deficiencies and 2 unsolved cases without known genetic defects) and 17 control subjects (10 healthy subjects as negative control group, 7 ataxia-telangiectasia patients as positive control group) were enrolled. G2 assay was carried out for the determination of radiosensitivity. RESULTS Based on radiation-induced chromosomal changes among the studied HIGM patients and their comparison with the controls, almost all (95%) the patients had degrees of radiosensitivity: 6 patients with low to moderate, 1 patient with moderate, 11 patients with severe and 1 patient without radiation sensitivity. CONCLUSION Today, X-ray radiation plays a very important role in diagnostic and therapeutic procedures; while increased exposure has devastating effects especially in radiosensitive patients. Considering higher sensitivity in HIGM patients, utilizing radiation-free techniques could partly avoid unnecessary and high-level exposure to radiation, thus preventing or reducing its harmful effects on the affected patients.
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Affiliation(s)
- Saba Fekrvand
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center,Tehran University of Medical Sciences, Tehran, Iran
| | - Hossein Mozdarani
- Department of Medical Genetics, Faculty of Medical Sciences,Tarbiat Modares University, Tehran, Iran
| | - Samaneh Delavari
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center,Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa Sohani
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center,Tehran University of Medical Sciences, Tehran, Iran
| | - Farzad Nazari
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center,Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Kiaee
- Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Yasser Bagheri
- Clinical Research Development Unit (CRDU), 5 Azar Hospital, Golestan University of Medical Sciences, Gorgan, Iran
| | - Gholamreza Azizi
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Gholamreza Hassanpour
- Center for Research of Endemic Parasites of Iran, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Hassan Abolhassani
- Research Center for Primary Immunodeficiencies, Iran University of Medical Sciences, Tehran, Iran.,Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Asghar Aghamohammadi
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center,Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Yazdani
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center,Tehran University of Medical Sciences, Tehran, Iran
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Li L, Ji J, Han M, Xu Y, Zhang X, Liu W, Liu S. A Novel CD40L Mutation Associated with X-Linked Hyper IgM Syndrome in a Chinese Family. Immunol Invest 2019; 49:307-316. [PMID: 31401902 DOI: 10.1080/08820139.2019.1638397] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Background: Mutations in CD40 ligand gene (CD40L) affecting immunoglobulin class-switch recombination and somatic hypermutation can result in X-Linked Hyper IgM Syndrome (HIGM1, XHIGM), a kind of rare serious primary immunodeficiency disease (PID) characterized by the deficiency of IgG, IgA and IgE and normal or increased serum concentrations of IgM. The objective of this study is to explain genotype-phenotype correlation and highlight the mutation responsible for a Chinese male patient with XHIGM.Methods: Whole exome sequencing (WES) and Sanger sequencing validation were performed to identify and validate the likely pathogenic mutation in the XHIGM family.Results: The results of the sequencing revealed that a new causative mutation in CD40L (c.714delT in exon 5, p.F238Lfs*4) which leads to the change in amino acids (translation terminates at the third position after the frameshift mutation) appeared in the proband. As his mother in the family was carrier with this heterozygous mutation, the hemizygous mutation in this patient came from his mother indicating that genetic mode of XHIGM is X-linked recessive inheritance.Conclusion: This study broadens our knowledge of the mutation in CD40L and lays a solid foundation for prenatal diagnosis and genetic counseling for the XHIGM family.
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Affiliation(s)
- Liangshan Li
- Medical Genetic Department, the Affiliated Hospital of Qingdao University, Qingdao, China.,Prenatal Diagnosis Center, the Affiliated Hospital of Qingdao University, Qingdao, China.,Department of Clinical Laboratory, Medical College of Qingdao University, Qingdao, China
| | - Jing Ji
- College of public health, Qingdao University, Qingdao, China
| | - Mengmeng Han
- Medical Genetic Department, the Affiliated Hospital of Qingdao University, Qingdao, China.,Prenatal Diagnosis Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yinglei Xu
- Medical Genetic Department, the Affiliated Hospital of Qingdao University, Qingdao, China.,Prenatal Diagnosis Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiao Zhang
- Medical Genetic Department, the Affiliated Hospital of Qingdao University, Qingdao, China.,Prenatal Diagnosis Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wenmiao Liu
- Medical Genetic Department, the Affiliated Hospital of Qingdao University, Qingdao, China.,Prenatal Diagnosis Center, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shiguo Liu
- Medical Genetic Department, the Affiliated Hospital of Qingdao University, Qingdao, China.,Prenatal Diagnosis Center, the Affiliated Hospital of Qingdao University, Qingdao, China
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