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Archana CA, Sekar YS, Suresh KP, Subramaniam S, Sagar N, Rani S, Anandakumar J, Pandey RK, Barman NN, Patil SS. Investigating the Influence of ANTXR2 Gene Mutations on Protective Antigen Binding for Heightened Anthrax Resistance. Genes (Basel) 2024; 15:426. [PMID: 38674361 PMCID: PMC11049084 DOI: 10.3390/genes15040426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/14/2024] [Accepted: 03/18/2024] [Indexed: 04/28/2024] Open
Abstract
Bacillus anthracis is the bacterium responsible for causing the zoonotic disease called anthrax. The disease presents itself in different forms like gastrointestinal, inhalation, and cutaneous. Bacterial spores are tremendously adaptable, can persist for extended periods and occasionally endanger human health. The Anthrax Toxin Receptor-2 (ANTXR2) gene acts as membrane receptor and facilitates the entry of the anthrax toxin into host cells. Additionally, mutations in the ANTXR2 gene have been linked to various autoimmune diseases, including Hyaline Fibromatosis Syndrome (HFS), Ankylosing Spondylitis (AS), Juvenile Hyaline Fibromatosis (JHF), and Infantile Systemic Hyalinosis (ISH). This study delves into the genetic landscape of ANTXR2, aiming to comprehend its associations with diverse disorders, elucidate the impacts of its mutations, and pinpoint minimal non-pathogenic mutations capable of reducing the binding affinity of the ANTXR2 gene with the protective antigen. Recognizing the pivotal role of single-nucleotide polymorphisms (SNPs) in shaping genetic diversity, we conducted computational analyses to discern highly deleterious and tolerated non-synonymous SNPs (nsSNPs) in the ANTXR2 gene. The Mutpred2 server determined that the Arg465Trp alteration in the ANTXR2 gene leads to altered DNA binding (p = 0.22) with a probability of a deleterious mutation of 0.808; notably, among the identified deleterious SNPs, rs368288611 (Arg465Trp) stands out due to its significant impact on altering the DNA-binding ability of ANTXR2. We propose these SNPs as potential candidates for hypertension linked to the ANTXR2 gene, which is implicated in blood pressure regulation. Noteworthy among the tolerated substitutions is rs200536829 (Ala33Ser), recognized as less pathogenic; this highlights its potential as a valuable biomarker, potentially reducing side effects on the host while also reducing binding with the protective antigen protein. Investigating these SNPs holds the potential to correlate with several autoimmune disorders and mitigate the impact of anthrax disease in humans.
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Affiliation(s)
- Chamalapura Ashwathama Archana
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Bengaluru 560064, India; (C.A.A.); (Y.S.S.); (N.S.); (S.R.); (J.A.); (S.S.P.)
| | - Yamini Sri Sekar
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Bengaluru 560064, India; (C.A.A.); (Y.S.S.); (N.S.); (S.R.); (J.A.); (S.S.P.)
| | - Kuralayanapalya Puttahonnappa Suresh
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Bengaluru 560064, India; (C.A.A.); (Y.S.S.); (N.S.); (S.R.); (J.A.); (S.S.P.)
| | | | - Ningegowda Sagar
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Bengaluru 560064, India; (C.A.A.); (Y.S.S.); (N.S.); (S.R.); (J.A.); (S.S.P.)
| | - Swati Rani
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Bengaluru 560064, India; (C.A.A.); (Y.S.S.); (N.S.); (S.R.); (J.A.); (S.S.P.)
| | - Jayashree Anandakumar
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Bengaluru 560064, India; (C.A.A.); (Y.S.S.); (N.S.); (S.R.); (J.A.); (S.S.P.)
| | - Rajan Kumar Pandey
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Solna, Sweden;
| | - Nagendra Nath Barman
- College of Veterinary Science, Assam Agricultural University (AAU), Guwahati 781022, India;
| | - Sharanagouda S. Patil
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Bengaluru 560064, India; (C.A.A.); (Y.S.S.); (N.S.); (S.R.); (J.A.); (S.S.P.)
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Zhu Y, Du X, Sun L, Wang H, Wang D, Wu B. Hyaline fibromatosis syndrome with a novel 4.41-kb deletion in ANTXR2 gene: A case report and literature review. Mol Genet Genomic Med 2022; 10:e1993. [PMID: 35726349 PMCID: PMC9356561 DOI: 10.1002/mgg3.1993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 04/02/2022] [Accepted: 05/13/2022] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Hyaline fibromatosis syndrome is a rare autosomal recessive disorder with ANTXR2 mutations characterised by the accumulation of hyaline substances in tissues. We present a case with the severe form-infantile systemic hyalinosis (ISH)-with long survival and review the literature. METHODS AND RESULTS Trio-exome sequencing revealed compound heterozygous mutations, including a novel 4.41 kb deletion on 4q21.21 and the previously reported c.1294C > T mutation, in the ANTXR2 gene. He was diagnosed with ISH and treated symptomatically. After follow-ups until 4 years of age, his recurrent respiratory infections and diarrhoea improved after one severe diarrhoea attack treated with intravenous gamma globulin. He is now awaiting surgical excision of gingival hypertrophy and joint contractures. CONCLUSION The novel gross deletion in ANTXR2 enriches the genetic mutation spectrum of hyaline fibromatosis syndrome. The manifestation of decreased foetal movement, acute-infection attack or intravenous gamma globulin treatment may be associated with hyaline fibromatosis syndrome. A review of 116 reported cases reveals that missense mutations in the vWA domain are associated with joint symptoms, respiratory tract infection and diarrhoea, while frameshift mutations are associated with facial deformities and speech delays. We have enriched the current knowledge of the clinical manifestations and genetic mutation spectrum of HFS.
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Affiliation(s)
- Yunqian Zhu
- Department of NeonatologyChildren's Hospital of Fudan UniversityShanghaiChina
| | - Xiaonan Du
- Department of NeurologyChildren's Hospital of Fudan UniversityShanghaiChina
| | - Li Sun
- Department of RheumatismChildren's Hospital of Fudan UniversityShanghaiChina
| | - Huijun Wang
- Clinical Genetic CenterChildren's Hospital of Fudan UniversityShanghaiChina
| | - Dahui Wang
- Department of OrthopedicsChildren's Hospital of Fudan UniversityShanghaiChina
| | - Bingbing Wu
- Clinical Genetic CenterChildren's Hospital of Fudan UniversityShanghaiChina
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Choochuen P, Laochareonsuk W, Tanaanantarak P, Kanjanapradit K, Sangkhathat S. Juvenile Hyaline Fibromatosis: Report of a Case with a Novel ANTXR2 Gene Mutation. Am J Case Rep 2022; 23:e935921. [PMID: 35752930 PMCID: PMC9245060 DOI: 10.12659/ajcr.935921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 05/18/2022] [Accepted: 04/26/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND Juvenile hyaline fibromatosis is a rare autosomal recessive disorder with unknown prevalence characterized by abnormal development of hyalinized fibrous tissue usually in the skin, mucosa, bone, and often the internal organs. Here, we report the case of a 7-year-old girl from a family with ANTXR2 mutation confirming JHF. CASE REPORT The girl presented with multiple painless soft-tissue swellings affecting the ears, forehead, and scalp. Excisional biopsies of the masses reported positive immunohistochemical staining for collagen type VI in the extracellular matrix area, which indicated collagen VI accumulation. Genetic analysis was performed using whole-exome sequencing. The variants were further validated using Sanger sequencing in trio-based approach. We identified a novel mutation, c.1273_1293delinsTCTTGTGGGTTTGGCT in exon 15 of ANTXR2 gene, leading to a frameshift of the amino acid from codon 425 to all the rest of the amino acid chain (p.Pro425Serfs). The change of an encoded protein interrupted lysosome-mediated degradation of collagen VI. This finding was compatible with her parents whose genetic tests were both positive for the same heterogenous deletion/insertion mutation. The patient was treated with surgical excision of the tumor masses, which had to be repeated several times due to recurrences. CONCLUSIONS This novel mutation in exon 15 of the ANTXR2 gene may help improve understanding of genotype-phenotype correlations for this syndrome and provide the basis for diagnostic testing. A multidisciplinary team approach including genetic molecular testing is required for an accurate diagnosis and management of JHF for conducting genetic counseling for affected families as a part of holistic management.
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Affiliation(s)
- Pongsakorn Choochuen
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand
| | - Wison Laochareonsuk
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand
- Translational Medicine Research Center, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand
| | - Pattama Tanaanantarak
- Department of Radiology, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand
| | - Kanet Kanjanapradit
- Department of Pathology, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand
| | - Surasak Sangkhathat
- Translational Medicine Research Center, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand
- Department of Surgery, Faculty of Medicine, Prince of Songkla University, Hatyai, Songkhla, Thailand
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Liu Y, Zeng X, Ding Y, Xu Y, Duan D. Hyaline fibromatosis syndrome: a case presenting with gingival enlargement as the only clinical manifestation and a report of two new mutations in the ANTXR2 gene. BMC Oral Health 2021; 21:508. [PMID: 34627224 PMCID: PMC8501544 DOI: 10.1186/s12903-021-01840-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 09/17/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Hyaline fibromatosis syndrome (HFS) is a rare autosomal recessive disorder caused by mutations in the gene for anthrax toxin receptor-2 (ANTXR2). The clinical features of HFS include skin thickening with nodules, papules and plaques, gingival enlargement, joint stiffness and contractures, and systemic manifestations. Notably, in all patients with HFS reported in the literature, gingival enlargement has never occurred alone. CASE PRESENTATION A case of a child with gingival enlargement as the only clinical manifestation, who was later diagnosed with HFS, is described. In this case, the absence of skin and joint lesions and other characteristic clinical presentations gave rise to a diagnostic problem. This uncommon condition was clinically indistinguishable from other diseases or conditions that presented with diffuse gingival enlargement. A definitive diagnosis of HFS was reached through genetic analysis. Trio whole exome sequencing revealed compound heterozygous mutations of ANTXR2 in this patient and two new mutations were reported. CONCLUSIONS The findings of this case serve as an important reminder to clinicians. When dental practitioners encounter gingival manifestations of HFS without accompanied skin or joint involvement, there is a need to pay attention to the differential diagnosis and increase awareness of HFS.
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Affiliation(s)
- Yiying Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontology, West China Hospital of Stomatology, Sichuan University, No.14, Section 3, Renmin South Road, Chengdu, 610041, China
| | - Xin Zeng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yi Ding
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontology, West China Hospital of Stomatology, Sichuan University, No.14, Section 3, Renmin South Road, Chengdu, 610041, China
| | - Yi Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontology, West China Hospital of Stomatology, Sichuan University, No.14, Section 3, Renmin South Road, Chengdu, 610041, China
| | - Dingyu Duan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Periodontology, West China Hospital of Stomatology, Sichuan University, No.14, Section 3, Renmin South Road, Chengdu, 610041, China.
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Chaudhry C, Kaur P, Srivastava P, Panigrahi I, Kaur A. Novel variation in ANTXR2 gene causing hyaline fibromatosis syndrome: A report from India. Congenit Anom (Kyoto) 2021; 61:140-141. [PMID: 33724566 DOI: 10.1111/cga.12414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 02/01/2021] [Accepted: 03/03/2021] [Indexed: 11/27/2022]
Affiliation(s)
- Chakshu Chaudhry
- Genetics Unit, Department of Paediatrics, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Parminder Kaur
- Genetics Unit, Department of Paediatrics, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Priyanka Srivastava
- Genetics Unit, Department of Paediatrics, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Inusha Panigrahi
- Genetics Unit, Department of Paediatrics, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Anupriya Kaur
- Genetics Unit, Department of Paediatrics, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
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Lin W, Su J, Liu D. Two novel compound heterozygous anthrax toxin receptor 2 mutations in a Chinese patient with hyaline fibromatosis syndrome. Int J Dermatol 2021; 60:e142-e144. [PMID: 33615458 DOI: 10.1111/ijd.15353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 10/06/2020] [Accepted: 11/18/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Weipeng Lin
- Department of Dermatology and Venereology, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Jinping Su
- Department of Dermatology and Venereology, First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Donghua Liu
- Department of Dermatology and Venereology, First Affiliated Hospital, Guangxi Medical University, Nanning, China
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Yang J, Shang X, Liu F, Wang Q, Liu C, Sun Y, Li G. [Analysis of pathogenic variants in a Chinese pedigree affected with hyaline fibromatosis syndrome]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2021; 38:232-237. [PMID: 33751531 DOI: 10.3760/cma.j.cn511374-20200625-00472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
OBJECTIVE To explore the clinical characteristics and genetic basis for a pair of twins affected with hyaline fibromatosis syndrome (HFS). METHODS Clinical data of the twins were retrospectively analyzed. High-throughput sequencing was carried out to detect potential pathogenic variants. CLUSTALX was employed to analyze cross-species conservation of the mutant amino acids. Impact of the mutations was predicted by using software including PolyPhen-2 and Mutation taster. RESULTS The pair of twins have featured growth and intelligence retardation, and were found to carry compound heterozygous variants of the ANTXR2 gene including c.1214G>A and c.1074delT, among which c.1214G>A was unreported previously. Both variants were predicted to be pathogenic. In addition to growth and mental delay, the pair of twins also featured hyperplasia of the gum and soft tissue-like masses of the auricle. The younger brother had rupture of the auricle mass during follow-up. CONCLUSION The patients' condition can probably be attributed to the compound heterozygous variants of the ANTXR2 gene. Above finding has facilitated molecular diagnosis of the patients.
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Affiliation(s)
- Jianmei Yang
- Department of Pediatric Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, China.
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Pereira TDSF, Sales JFD, Travassos DV, Lanza CR, Castro WH, Gomes CC, Fonseca FP, Silva TA, Gomez RS. Hyaline fibromatosis syndrome: A case report. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 130:e328-e335. [PMID: 32771412 DOI: 10.1016/j.oooo.2020.06.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/11/2020] [Accepted: 06/26/2020] [Indexed: 11/18/2022]
Abstract
Hyaline fibromatosis syndrome (HFS) is a rare monogenic disease inherited in an autosomal recessive pattern and characterized by hyaline deposits on the skin, mucosa, and multiple organs; osteoporosis; and joint contractures. This progressive condition is caused by mutations in the gene encoding the anthrax toxin receptor 2 protein (ANTXR2). HFS is a disabling disease, and patients suffer from progressive pain and disfiguring symptoms. There are few published case reports detailing oral findings in patients with this condition. The present case report describes a 4-year-old female patient who showed severe manifestations of HFS, emphasizing the oral manifestations, the histopathologic aspects of HFS, the molecular pathogenesis, and the interdisciplinary management of patients affected by this condition.
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Affiliation(s)
- Thaís Dos Santos Fontes Pereira
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Jéssica Félix de Sales
- Multiprofessional Integrated Residency in Health, Hospital das Clínicas, Universidade Federal de Minas Gerais
| | - Denise Vieira Travassos
- Department of Social and Preventive Dentistry, School of Dentistry, Universidade Federal de Minas Gerais
| | - Célia Regina Lanza
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Wagner Henriques Castro
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Felipe Paiva Fonseca
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Tarcília Aparecida Silva
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ricardo Santiago Gomez
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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van Rijn JM, Werner L, Aydemir Y, Spronck JM, Pode-Shakked B, van Hoesel M, Shimshoni E, Polak-Charcon S, Talmi L, Eren M, Weiss B, H.J. Houwen R, Barshack I, Somech R, Nieuwenhuis EE, Sagi I, Raas-Rothschild A, Middendorp S, Shouval DS. Enhanced Collagen Deposition in the Duodenum of Patients with Hyaline Fibromatosis Syndrome and Protein Losing Enteropathy. Int J Mol Sci 2020; 21:E8200. [PMID: 33147779 PMCID: PMC7662532 DOI: 10.3390/ijms21218200] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 12/25/2022] Open
Abstract
Hyaline fibromatosis syndrome (HFS), resulting from ANTXR2 mutations, is an ultra-rare disease that causes intestinal lymphangiectasia and protein-losing enteropathy (PLE). The mechanisms leading to the gastrointestinal phenotype in these patients are not well defined. We present two patients with congenital diarrhea, severe PLE and unique clinical features resulting from deleterious ANTXR2 mutations. Intestinal organoids were generated from one of the patients, along with CRISPR-Cas9 ANTXR2 knockout, and compared with organoids from two healthy controls. The ANTXR2-deficient organoids displayed normal growth and polarity, compared to controls. Using an anthrax-toxin assay we showed that the c.155C>T mutation causes loss-of-function of ANTXR2 protein. An intrinsic defect of monolayer formation in patient-derived or ANTXR2KO organoids was not apparent, suggesting normal epithelial function. However, electron microscopy and second harmonic generation imaging showed abnormal collagen deposition in duodenal samples of these patients. Specifically, collagen VI, which is known to bind ANTXR2, was highly expressed in the duodenum of these patients. In conclusion, despite resistance to anthrax-toxin, epithelial cell function, and specifically monolayer formation, is intact in patients with HFS. Nevertheless, loss of ANTXR2-mediated signaling leads to collagen VI accumulation in the duodenum and abnormal extracellular matrix composition, which likely plays a role in development of PLE.
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Affiliation(s)
- Jorik M. van Rijn
- Division of Pediatrics, Department of Pediatric Gastroenterology, Wilhelmina Children’s Hospital, University Medical Center Utrecht (UMCU), Utrecht University (UU), 3584 CT Utrecht, The Netherlands; (J.M.v.R.); (J.M.A.S.); (M.v.H.); (R.H.J.H.); (E.E.S.N.)
- Regenerative Medicine Center, UMCU, UU, 3584 CT Utrecht, The Netherlands
| | - Lael Werner
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan 5262100, Israel; (L.W.); (B.W.)
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel; (B.P.-S.); (S.P.-C.); (L.T.); (I.B.); (R.S.); (A.R.-R.)
| | - Yusuf Aydemir
- Department of Pediatrics, Division of Pediatric Gastroenterology and Hepatology, Eskisehir Osmangazi University Faculty of Medicine, Eskisehir 26040, Turkey; (Y.A.); (M.E.)
| | - Joey M.A. Spronck
- Division of Pediatrics, Department of Pediatric Gastroenterology, Wilhelmina Children’s Hospital, University Medical Center Utrecht (UMCU), Utrecht University (UU), 3584 CT Utrecht, The Netherlands; (J.M.v.R.); (J.M.A.S.); (M.v.H.); (R.H.J.H.); (E.E.S.N.)
- Regenerative Medicine Center, UMCU, UU, 3584 CT Utrecht, The Netherlands
| | - Ben Pode-Shakked
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel; (B.P.-S.); (S.P.-C.); (L.T.); (I.B.); (R.S.); (A.R.-R.)
- The Institute for Rare Diseases, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan 5262100, Israel
- Talpiot Medical Leadership Program, Sheba Medical Center, Ramat Gan 5262100, Israel
| | - Marliek van Hoesel
- Division of Pediatrics, Department of Pediatric Gastroenterology, Wilhelmina Children’s Hospital, University Medical Center Utrecht (UMCU), Utrecht University (UU), 3584 CT Utrecht, The Netherlands; (J.M.v.R.); (J.M.A.S.); (M.v.H.); (R.H.J.H.); (E.E.S.N.)
- Regenerative Medicine Center, UMCU, UU, 3584 CT Utrecht, The Netherlands
| | - Elee Shimshoni
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 7610001, Israel; (E.S.); (I.S.)
| | - Sylvie Polak-Charcon
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel; (B.P.-S.); (S.P.-C.); (L.T.); (I.B.); (R.S.); (A.R.-R.)
- Institute of Pathology, Sheba Medical Center, Ramat Gan 5262100, Israel
| | - Liron Talmi
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel; (B.P.-S.); (S.P.-C.); (L.T.); (I.B.); (R.S.); (A.R.-R.)
- Pediatric Department A, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan 5262100, Israel
| | - Makbule Eren
- Department of Pediatrics, Division of Pediatric Gastroenterology and Hepatology, Eskisehir Osmangazi University Faculty of Medicine, Eskisehir 26040, Turkey; (Y.A.); (M.E.)
| | - Batia Weiss
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan 5262100, Israel; (L.W.); (B.W.)
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel; (B.P.-S.); (S.P.-C.); (L.T.); (I.B.); (R.S.); (A.R.-R.)
| | - Roderick H.J. Houwen
- Division of Pediatrics, Department of Pediatric Gastroenterology, Wilhelmina Children’s Hospital, University Medical Center Utrecht (UMCU), Utrecht University (UU), 3584 CT Utrecht, The Netherlands; (J.M.v.R.); (J.M.A.S.); (M.v.H.); (R.H.J.H.); (E.E.S.N.)
| | - Iris Barshack
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel; (B.P.-S.); (S.P.-C.); (L.T.); (I.B.); (R.S.); (A.R.-R.)
- Institute of Pathology, Sheba Medical Center, Ramat Gan 5262100, Israel
| | - Raz Somech
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel; (B.P.-S.); (S.P.-C.); (L.T.); (I.B.); (R.S.); (A.R.-R.)
- Pediatric Department A, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan 5262100, Israel
- Immunology Service, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan 5262100, Israel
- Jeffrey Modell Foundation Center, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan 5262100, Israel
| | - Edward E.S. Nieuwenhuis
- Division of Pediatrics, Department of Pediatric Gastroenterology, Wilhelmina Children’s Hospital, University Medical Center Utrecht (UMCU), Utrecht University (UU), 3584 CT Utrecht, The Netherlands; (J.M.v.R.); (J.M.A.S.); (M.v.H.); (R.H.J.H.); (E.E.S.N.)
| | - Irit Sagi
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot 7610001, Israel; (E.S.); (I.S.)
| | - Annick Raas-Rothschild
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel; (B.P.-S.); (S.P.-C.); (L.T.); (I.B.); (R.S.); (A.R.-R.)
- The Institute for Rare Diseases, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan 5262100, Israel
| | - Sabine Middendorp
- Division of Pediatrics, Department of Pediatric Gastroenterology, Wilhelmina Children’s Hospital, University Medical Center Utrecht (UMCU), Utrecht University (UU), 3584 CT Utrecht, The Netherlands; (J.M.v.R.); (J.M.A.S.); (M.v.H.); (R.H.J.H.); (E.E.S.N.)
- Regenerative Medicine Center, UMCU, UU, 3584 CT Utrecht, The Netherlands
| | - Dror S. Shouval
- Pediatric Gastroenterology Unit, Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan 5262100, Israel; (L.W.); (B.W.)
- Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 6997801, Israel; (B.P.-S.); (S.P.-C.); (L.T.); (I.B.); (R.S.); (A.R.-R.)
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10
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Härter B, Benedicenti F, Karall D, Lausch E, Schweigmann G, Stanzial F, Superti‐Furga A, Scholl‐Bürgi S. Clinical aspects of Hyaline Fibromatosis Syndrome and identification of a novel mutation. Mol Genet Genomic Med 2020; 8:e1203. [PMID: 32196989 PMCID: PMC7284039 DOI: 10.1002/mgg3.1203] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Hyaline fibromatosis syndrome is an autosomal recessive disease caused by mutations in ANTXR2 which leads to loss of function of the transmembrane protein anthrax toxin receptor 2. It is distinguished by characteristic skin lesions, gingival hyperplasia, joint and bone disease, and systemic involvement. METHODS Based on the case of an 11-year-old female patient with typical features of hyaline fibromatosis syndrome and the underlying pathogenic compound heterozygote variants in ANTXR2 we discuss the genetic and clinical aspects of hyaline fibromatosis syndrome. RESULTS The novel mutation in ANTXR2 (c.1223T>C, p.Leu408Pro variant) seems to allow for a protracted course of the disease. CONCLUSION Our findings add to the phenotypic, genetic, and biochemical spectrum of hyaline fibromatosis syndrome.
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Affiliation(s)
- Bettina Härter
- Division of Pediatric SurgeryDepartment of Visceral, Transplant and Thoracic SurgeryCenter of Operative MedicineInnsbruck Medical UniversityInnsbruckAustria
| | - Francesco Benedicenti
- Clinical Genetics Service and South Tyrol Coordination Center for Rare DiseasesDepartment of PediatricsRegional Hospital of BolzanoBolzanoItaly
| | - Daniela Karall
- Department of Pediatrics IInnsbruck Medical UniversityInnsbruckAustria
| | - Ekkehard Lausch
- Pediatric Genetics SectionDepartment of PediatricsUniversity of FreiburgFreiburgGermany
| | | | - Franco Stanzial
- Clinical Genetics Service and South Tyrol Coordination Center for Rare DiseasesDepartment of PediatricsRegional Hospital of BolzanoBolzanoItaly
| | - Andrea Superti‐Furga
- Division of Genetic MedicineLausanne University HospitalUniversity of LausanneLausanneSwitzerland
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11
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Bürgi J, Abrami L, Castanon I, Abriata LA, Kunz B, Yan SE, Lera M, Unger S, Superti-Furga A, Peraro MD, Gaitan MG, van der Goot FG. Ligand Binding to the Collagen VI Receptor Triggers a Talin-to-RhoA Switch that Regulates Receptor Endocytosis. Dev Cell 2020; 53:418-430.e4. [PMID: 32428455 DOI: 10.1016/j.devcel.2020.04.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 01/23/2020] [Accepted: 04/21/2020] [Indexed: 11/23/2022]
Abstract
Capillary morphogenesis gene 2 (CMG2/ANTXR2) is a cell surface receptor for both collagen VI and anthrax toxin. Biallelic loss-of-function mutations in CMG2 lead to a severe condition, hyaline fibromatosis syndrome (HFS). We have here dissected a network of dynamic interactions between CMG2 and various actin interactors and regulators, describing a different behavior from other extracellular matrix receptors. CMG2 binds talin, and thereby the actin cytoskeleton, only in its ligand-free state. Extracellular ligand binding leads to src-dependent talin release and recruitment of the actin cytoskeleton regulator RhoA and its effectors. These sequential interactions of CMG2 are necessary for the control of oriented cell division during fish development. Finally, we demonstrate that effective switching between talin and RhoA binding is required for the intracellular degradation of collagen VI in human fibroblasts, which explains why HFS mutations in the cytoskeleton-binding domain lead to dysregulation of extracellular matrix homeostasis.
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Affiliation(s)
- Jérôme Bürgi
- Faculty of Life Sciences, Global Health Institute, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; EMBL Hamburg DESY, 22607 Hamburg, Germany
| | - Laurence Abrami
- Faculty of Life Sciences, Global Health Institute, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Irinka Castanon
- Departments of Biochemistry and of Molecular Biology, Sciences II, 30 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | - Luciano Andres Abriata
- Faculty of Life Sciences, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Beatrice Kunz
- Faculty of Life Sciences, Global Health Institute, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Shixu Emili Yan
- Faculty of Life Sciences, Global Health Institute, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Manuel Lera
- Departments of Biochemistry and of Molecular Biology, Sciences II, 30 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | - Sheila Unger
- Division of Genetic Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, 1011 Lausanne, Switzerland
| | - Andrea Superti-Furga
- Division of Genetic Medicine, Centre Hospitalier Universitaire Vaudois, University of Lausanne, 1011 Lausanne, Switzerland
| | - Matteo Dal Peraro
- Faculty of Life Sciences, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Marcos Gonzalez Gaitan
- Departments of Biochemistry and of Molecular Biology, Sciences II, 30 Quai Ernest-Ansermet, 1211 Geneva, Switzerland
| | - Francoise Gisou van der Goot
- Faculty of Life Sciences, Global Health Institute, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
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12
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Cozma C, Hovakimyan M, Iurașcu MI, Makhseed N, Selim LA, Alhashem AM, Ben-Omran T, Mahmoud IG, Al Menabawy NM, Al-Mureikhi M, Martin M, Demuth L, Yüksel Z, Beetz C, Bauer P, Rolfs A. Genetic, clinical and biochemical characterization of a large cohort of patients with hyaline fibromatosis syndrome. Orphanet J Rare Dis 2019; 14:209. [PMID: 31455396 PMCID: PMC6712857 DOI: 10.1186/s13023-019-1183-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 08/16/2019] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Hyaline fibromatosis syndrome (HFS) is a rare clinical condition in which bi-allelic variants in ANTXR2 are associated with extracellular hyaline deposits. It manifests as multiple skin nodules, patchy hyperpigmentation, joint contractures and severe pain with movement. HFS shows some clinical overlap to Farber disease (FD), a recessive lysosomal storage disorder. RESULTS We here present the largest cohort of independent, genetically confirmed HFS cases reported to date: in 19 unrelated index patients, we identified ten distinct homozygous ANTXR2 mutations, three of which are novel frame-shift variants. The associated clinical data are consistent with the previous hypothesis of non-truncating variants in the terminal exons 13-17 to confer rather mild phenotypes. The novel observation of gender-dependent disease manifestation in our cohort received support from a meta-analysis of all previously published cases. Untargeted blood-based metabolomics revealed patient samples to be biochemically distinct from control samples. Numerous potential HFS biomarker metabolites could thus be identified. We also found metabolomics profiles of HFS patients to highly overlap with those from FD patients. CONCLUSIONS Our study extends the mutational spectrum for HFS, suggests gender-dependency of manifestation, and provides pilot metabolomics data for biomarker identification and a better pathomechanistic understanding of the disorder.
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Affiliation(s)
| | | | | | - Nawal Makhseed
- Department of Pediatrics, Jahra Hospital, Ministry of Health, Jahra City, Kuwait
| | - Laila A. Selim
- Division of Neurology and Metabolism, Kasr Al Ainy School of Medicine, Cairo University Children Hospital, Cairo, Egypt
| | - Amal M. Alhashem
- Prince Sultan Military Medical City, Pediatrics, Riyadh, Saudi Arabia
- Alfaisal University, Riyadh, Saudi Arabia
| | - Tawfeg Ben-Omran
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, Hamad Medical Corporation, Doha, Qatar
| | - Iman G. Mahmoud
- Division of Neurology and Metabolism, Kasr Al Ainy School of Medicine, Cairo University Children Hospital, Cairo, Egypt
| | - Nihal M. Al Menabawy
- Division of Neurology and Metabolism, Kasr Al Ainy School of Medicine, Cairo University Children Hospital, Cairo, Egypt
| | - Mariam Al-Mureikhi
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, Hamad Medical Corporation, Doha, Qatar
| | - Magi Martin
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, Hamad Medical Corporation, Doha, Qatar
| | - Laura Demuth
- Centogene AG, Am Strande 7, 18057 Rostock, Germany
| | - Zafer Yüksel
- Centogene AG, Am Strande 7, 18057 Rostock, Germany
| | | | - Peter Bauer
- Centogene AG, Am Strande 7, 18057 Rostock, Germany
| | - Arndt Rolfs
- Centogene AG, Am Strande 7, 18057 Rostock, Germany
- Rostock Medical University, Rostock, Germany
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13
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Abstract
The anthrax toxin receptors-capillary morphogenesis gene 2 (CMG2) and tumor endothelial marker 8 (TEM8)-were identified almost 20 years ago, although few studies have moved beyond their roles as receptors for the anthrax toxins to address their physiological functions. In the last few years, insight into their endogenous roles has come from two rare diseases: hyaline fibromatosis syndrome, caused by mutations in CMG2, and growth retardation, alopecia, pseudo-anodontia, and optic atrophy (GAPO) syndrome, caused by loss-of-function mutations in TEM8. Although CMG2 and TEM8 are highly homologous at the protein level, the difference in disease symptoms points to variations in the physiological roles of the two anthrax receptors. Here, we focus on the similarities between these receptors in their ability to regulate extracellular matrix homeostasis, angiogenesis, cell migration, and skin elasticity. In this way, we shed light on how mutations in these two related proteins cause such seemingly different diseases and we highlight the existing knowledge gaps that could form the focus of future studies.
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Affiliation(s)
- Oksana A. Sergeeva
- Global Health Institute, School of Life Sciences, EPFL, Lausanne, Switzerland
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Casas-Alba D, Martínez-Monseny A, Pino-Ramírez RM, Alsina L, Castejón E, Navarro-Vilarrubí S, Pérez-Dueñas B, Serrano M, Palau F, García-Alix A. Hyaline fibromatosis syndrome: Clinical update and phenotype-genotype correlations. Hum Mutat 2018; 39:1752-1763. [PMID: 30176098 DOI: 10.1002/humu.23638] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 08/28/2018] [Accepted: 08/29/2018] [Indexed: 11/11/2022]
Abstract
Hyaline fibromatosis syndrome (HFS) is the unifying term for infantile systemic hyalinosis and juvenile hyaline fibromatosis. HFS is a rare autosomal recessive disorder of the connective tissue caused by mutations in the gene for anthrax toxin receptor-2 (ANTXR2). It is characterized by abnormal growth of hyalinized fibrous tissue with cutaneous, mucosal, osteoarticular, and systemic involvement. We reviewed the 84 published cases and their molecular findings, aiming to gain insight into the clinical features, prognostic factors, and phenotype-genotype correlations. Extreme pain at minimal handling in a newborn is the presentation pattern most frequently seen in grade 4 patients (life-limiting disease). Gingival hypertrophy and subcutaneous nodules are some of the disease hallmarks. Though painful joint stiffness and contractures are almost universal, weakness and hypotonia may also be present. Causes of death are intractable diarrhea, recurrent infections, and organ failure. Median age of death of grade 4 cases is 15.0 months (p25-p75: 9.5-24.0). This review provides evidence to reinforce the previous hypothesis that missense mutations in exons 1-12 and mutations leading to a premature stop codon lead to the severe form of the disease, while missense pathogenic variants in exons 13-17 lead to the mild form of the disease. Multidisciplinary team approach is recommended.
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Affiliation(s)
- Dídac Casas-Alba
- Department of Pediatrics, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Department of Genetic and Molecular Medicine, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Antonio Martínez-Monseny
- Department of Genetic and Molecular Medicine, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Rosa M Pino-Ramírez
- Department of Pediatrics, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Laia Alsina
- Department of Pediatric Allergy and Clinical Immunology, Hospital Sant Joan de Déu, University of Barcelona, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
| | - Esperanza Castejón
- Department of Pediatric Gastroenterology, Hepatology and Nutrition, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Sergi Navarro-Vilarrubí
- Department of Pediatric Palliative Care, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Belén Pérez-Dueñas
- Department of Pediatric Neurology, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Department of Pediatric Neurology, Vall d'Hebron Hospital and Research Institute, Barcelona, Spain
| | - Mercedes Serrano
- Department of Genetic and Molecular Medicine, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Department of Pediatric Neurology, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- CIBER de Enfermedades Raras (CIBERER-ISCIII), Madrid, Spain
| | - Francesc Palau
- Department of Genetic and Molecular Medicine, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- CIBER de Enfermedades Raras (CIBERER-ISCIII), Madrid, Spain
- Laboratory of Neurogenetics and Molecular Medicine, Institut de Recerca Sant Joan de Déu, Barcelona, Spain
- Division of Pediatrics, University of Barcelona School of Medicine, Barcelona, Spain
| | - Alfredo García-Alix
- Department of Genetic and Molecular Medicine, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- CIBER de Enfermedades Raras (CIBERER-ISCIII), Madrid, Spain
- Department of Neonatology, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
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15
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Gao Y, Bai J, Wang J, Liu X. Two novel mutations in the ANTXR2 gene in a Chinese patient suffering from hyaline fibromatosis syndrome: A case report. Mol Med Rep 2018; 18:4004-4008. [PMID: 30152846 DOI: 10.3892/mmr.2018.9421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/14/2018] [Indexed: 11/06/2022] Open
Abstract
Hyaline fibromatosis syndrome (HFS; MIM 228600) is a rare autosomal recessive disorder characterized by the abnormal growth of hyalinized fibrous tissue at subcutaneous regions on the scalp, ears and neck. The disease is caused by either a homozygous or compound heterozygous mutation of the anthrax toxin receptor 2 (ANTXR2) gene. The present study describes a patient with HFS confirmed by clinical examination as well as histopathological and genetic analyses. Numerous painless and variable‑sized subcutaneous nodules were observed on the scalp, ear, trunk and four extremities of the patient. With increasing age, the number and size of the nodules gradually increased in the patient. The patient additionally presented with severe gingival thickening and developed pearly papules on the ears, back and penis foreskin. Biopsies of ear nodules revealed that the tumor was located in the dermis, and no marked alterations were observed in the epidermis compared with healthy patients. Spindle‑shaped or round tumor cells were revealed to be immersed in the eosinophilic hyaline ground substance. Furthermore, a skeletal X‑ray of the patient revealed multiple low‑density imaging on the right distal humerus. Compound heterozygous mutations in the ANTXR2 gene were identified in the patient: c.470_472del in exon 5 and c.1073 delC in exon 13. c.470_472del were revealed to be inherited from his mother and father, respectively. These two mutations, c.470_472del and c.1073 delC, to the best of our knowledge, have not previously been identified. Identification of the mutations in ANTXR2 may make prenatal diagnosis of HFS possible during future pregnancies.
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Affiliation(s)
- Ying Gao
- Department of Dermatology, Capital Institute of Pediatrics, Peking University Teaching Hospital, Beijing 100020, P.R. China
| | - Jinli Bai
- Department of Medical Genetics, Capital Institute of Pediatrics, Peking University Teaching Hospital, Beijing 100020, P.R. China
| | - Jiancai Wang
- Department of Dermatology, Capital Institute of Pediatrics, Peking University Teaching Hospital, Beijing 100020, P.R. China
| | - Xiaoyan Liu
- Department of Dermatology, Capital Institute of Pediatrics, Peking University Teaching Hospital, Beijing 100020, P.R. China
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16
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Youssefian L, Vahidnezhad H, Touati A, Ziaee V, Saeidian AH, Pajouhanfar S, Zeinali S, Uitto J. The genetic basis of hyaline fibromatosis syndrome in patients from a consanguineous background: a case series. BMC Med Genet 2018; 19:87. [PMID: 29801470 PMCID: PMC5970508 DOI: 10.1186/s12881-018-0581-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 04/19/2018] [Indexed: 11/25/2022]
Abstract
BACKGROUND Hyaline fibromatosis syndrome (HFS) is a rare heritable multi-systemic disorder with significant dermatologic manifestations. It is caused by mutations in ANTXR2, which encodes a transmembrane receptor involved in collagen VI regulation in the extracellular matrix. Over 40 mutations in the ANTXR2 gene have been associated with cases of HFS. Variable severity of the disorder in different patients has been proposed to be related to the specific mutations in these patients and their location within the gene. CASE PRESENTATION In this report, we describe four cases of HFS from consanguineous backgrounds. Genetic analysis identified a novel homozygous frameshift deletion c.969del (p.Ile323Metfs*14) in one case, the previously reported mutation c.134 T > C (p.Leu45Pro) in another case, and the recurrent homozygous frameshift mutation c.1073dup (p.Ala359Cysfs*13) in two cases. The epidemiology of this latter mutation is of particular interest, as it is a candidate for inhibition of nonsense-mediated mRNA decay. Haplotype analysis was performed to determine the origin of this mutation in this consanguineous cohort, which suggested that it may develop sporadically in different populations. CONCLUSIONS This information provides insights on genotype-phenotype correlations, identifies a previously unreported mutation in ANTXR2, and improves the understanding of a recurrent mutation in HFS.
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Affiliation(s)
- Leila Youssefian
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, Suite 450 BLSB, Philadelphia, PA 19107 USA
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Hassan Vahidnezhad
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, Suite 450 BLSB, Philadelphia, PA 19107 USA
- Biotechnology Research Center, Department of Molecular Medicine, Pasteur Institute of Iran, Tehran, Iran
| | - Andrew Touati
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, Suite 450 BLSB, Philadelphia, PA 19107 USA
- Drexel University College of Medicine, Philadelphia, PA USA
| | - Vahid Ziaee
- Department of Pediatrics, Children’s Medical Center, Pediatrics Center of Excellence, Tehran, Iran
| | - Amir Hossein Saeidian
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, Suite 450 BLSB, Philadelphia, PA 19107 USA
| | - Sara Pajouhanfar
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, Suite 450 BLSB, Philadelphia, PA 19107 USA
| | - Sirous Zeinali
- Biotechnology Research Center, Department of Molecular Medicine, Pasteur Institute of Iran, Tehran, Iran
- Kawsar Human Genetics Research Center, Tehran, Iran
| | - Jouni Uitto
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, Suite 450 BLSB, Philadelphia, PA 19107 USA
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17
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Zhang Y, Li R, Li Y, Liao C. [Identification of novel compound heterozygous mutations in the ANTXR2 gene in a Chinese patient with juvenile hyaline fibromatosis]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2017; 34:866-869. [PMID: 29188618 DOI: 10.3760/cma.j.issn.1003-9406.2017.06.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To identify pathogenic mutations of ANTXR2 gene in a patient with juvenile hyaline fibromatosis. METHODS Genomic DNA was extracted from peripheral venous blood sample from the patient. All coding exons (exons 1-17) and splicing sites of the ANTXR2 gene were amplified with PCR. Potential mutations were detected with direct sequencing of the PCR products. 100 unrelated healthy subjects were used as the controls. CLUSTALX (1.81) was employed to analyze cross-species conservation of the mutant amino acid. Impact of the mutations was analyzed with software including SIFT, PolyPhen-2 and MutationTaster. RESULTS A compound heterozygous mutation c.1074delT/c.1153G>C, was identified, among which c.1153G>C has not been reported previously and was predicted to be probably damaging. Both mutations were not found among the 100 healthy controls. CONCLUSION The patient's condition may be attributed to the compound heterozygous mutations of c.1074delT and c.1153G>C of the ANTXR2 gene. Above results has facilitated molecular diagnosis for this patient.
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Affiliation(s)
- Yongling Zhang
- Prenatal Diagnostic Center, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong 510623, China.
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18
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Elenga N, Chenel C, Besnard M, Pasche J, Darteyre S, Gatti H, De Barthez MP, Yang F, Verloes A. Infantile systemic hyalinosis: a report of two new cases, one with prolonged survival. Eur J Dermatol 2017; 27:328-329. [PMID: 28524048 DOI: 10.1684/ejd.2017.3007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Affiliation(s)
- Narcisse Elenga
- Paediatric Unit, Cayenne Hospital, BP 6006, 97306 Cayenne Cedex, French Guiana
| | - Claude Chenel
- Paediatric Unit, Taaone Hospital, BP 1640-98713 PAPEETE, French Polynesia
| | - Marianne Besnard
- Neonatology Unit, Taaone Hospital, BP 1640-98713 PAPEETE, French Polynesia
| | - Jérôme Pasche
- Paediatric Unit, Taaone Hospital, BP 1640-98713 PAPEETE, French Polynesia
| | - Stéphane Darteyre
- Paediatric Unit, Taaone Hospital, BP 1640-98713 PAPEETE, French Polynesia
| | - Hélène Gatti
- Paediatric Unit, Taaone Hospital, BP 1640-98713 PAPEETE, French Polynesia
| | | | - Francisca Yang
- Paediatric Unit, Taaone Hospital, BP 1640-98713 PAPEETE, French Polynesia
| | - Alain Verloes
- Department of Genetics, Robert Debré Hospital, 48 bd Sérurier- 75019 Paris, France
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Haidar Z, Temanni R, Chouery E, Jitesh P, Liu W, Al-Ali R, Wang E, Marincola FM, Jalkh N, Haddad S, Haidar W, Chouchane L, Mégarbané A. Diagnosis implications of the whole genome sequencing in a large Lebanese family with hyaline fibromatosis syndrome. BMC Genet 2017; 18:3. [PMID: 28103792 PMCID: PMC5244738 DOI: 10.1186/s12863-017-0471-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 01/10/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Hyaline fibromatosis syndrome (HFS) is a recently introduced alternative term for two disorders that were previously known as juvenile hyaline fibromatosis (JHF) and infantile systemic hyalinosis (ISH). These two variants are secondary to mutations in the anthrax toxin receptor 2 gene (ANTXR2) located on chromosome 4q21. The main clinical features of both entities include papular and/or nodular skin lesions, gingival hyperplasia, joint contractures and osteolytic bone lesions that appear in the first few years of life, and the syndrome typically progresses with the appearance of new lesions. METHODS We describe five Lebanese patients from one family, aged between 28 and 58 years, and presenting with nodular and papular skin lesions, gingival hyperplasia, joint contractures and bone lesions. Because of the particular clinical features and the absence of a clinical diagnosis, Whole Genome Sequencing (WGS) was carried out on DNA samples from the proband and his parents. RESULTS A mutation in ANTXR2 (p. Gly116Val) that yielded a diagnosis of HFS was noted. CONCLUSIONS The main goal of this paper is to add to the knowledge related to the clinical and radiographic aspects of HFS in adulthood and to show the importance of Next-Generation Sequencing (NGS) techniques in resolving such puzzling cases.
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Affiliation(s)
- Zahraa Haidar
- Unité de Génétique Médicale, Faculté de Médecine, Université Saint-Joseph, Beirut, Lebanon
| | - Ramzi Temanni
- Bioinformatics Division, Sidra Medical & Research Center, Doha, Qatar
| | - Eliane Chouery
- Unité de Génétique Médicale, Faculté de Médecine, Université Saint-Joseph, Beirut, Lebanon
| | - Puthen Jitesh
- Bioinformatics Division, Sidra Medical & Research Center, Doha, Qatar
| | - Wei Liu
- Genomics Core Laboratory, Translational Medicine Division, Sidra Medical & Research Center, Doha, Qatar
| | - Rashid Al-Ali
- Bioinformatics Division, Sidra Medical & Research Center, Doha, Qatar
| | - Ena Wang
- Genomics Core Laboratory, Translational Medicine Division, Sidra Medical & Research Center, Doha, Qatar
| | | | - Nadine Jalkh
- Unité de Génétique Médicale, Faculté de Médecine, Université Saint-Joseph, Beirut, Lebanon
| | - Soha Haddad
- Department of Radiology, Hotel Dieu de France University hospital–Beirut, Beirut, Lebanon
| | - Wassim Haidar
- Department of General surgery, Dar Al Amal University Hospital-Baalbeck, Baalbeck, Lebanon
| | - Lotfi Chouchane
- Laboratory of Genetic Medicine and Immunology, Weill Cornell Medicine-Qatar, Doha, Qatar
| | - André Mégarbané
- Institut Jérôme Lejeune, 37, rue des Volontaires, Paris, 75015 France
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Youssefian L, Vahidnezhad H, Aghighi Y, Ziaee V, Zeinali S, Abiri M, Uitto J. Hyaline Fibromatosis Syndrome: A Novel Mutation and Recurrent Founder Mutation in the CMG2/ANTXR2 Gene. Acta Derm Venereol 2017; 97:108-109. [PMID: 27174544 DOI: 10.2340/00015555-2459] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Leila Youssefian
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, 233 S. 10th Street, Suite 450 BLSB, Philadelphia, PA 19107, Pennsylvania, USA
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Abstract
Objective: To investigate the clinical, pathological and gene mutation features of infantile systemic hyalinosis(ISH). Method: Data of a child with ISH seen in Haikou Hospital were retrospectively analyzed for the diagnosis and differential diagnosis of infantile systemic hyalinosis and the relevant reports in literature were reviewed. Result: A 1 year and 1 month old boy showed limbs joint stiffness, limited mobility and double knee flexion at his first month of life. At third month, red rashes appeared on the body and gradually became purple, most of them were seen on the back and they were higher than the skin surface, uneven and did not fade when pressed. Undergoing X-ray the boy showed double knee varus deformity. Histopathological examination of the neck skin lesions proved hyalinosis. The gene examination revealed ANTXR2 exon 13, c. 1073 delC/c.1074 delT mutations, which were hot spots mutation of ISH, then the diagnosis of ISH was confirmed. Using "Infantile systemic hyalinosis" as a keyword, literature in Wanfang network, PubMed and China National Knowledge Infrastructure from 1978 to 2015 was searched, we found 48 foreign cases, one Chinese Taiwan case. All the cases had joint contractures. Short stature and skin lesions with hyperpigmentation in 40 cases, gingival hyperplasia in 36 cases, perianal nodules in 32 cases, skin thickening in 31 cases, osteoporosis in 30 cases, recurrent diarrhea in 30 cases, repeated infections in 25 cases; 49 cases were reported as autosomal recessive genetic disease, of whom 18 cases underwent genetic testing, the pathogenic gene was located in the fourth chromosome q21 position, the gene was encoded as capillary morphogenesis Protein 2 (CMG2), also known as anthrax toxin receptor 2 (ANTXR2), but there were various mutation spots in the gene. Among the 18 cases, 9 were of frameshift, 8 of missense and 1 of splice defect . Onset ages were mainly within 4 months after birth. Without special treatment most patients died at about 2 years of age due to repeated infections. Conclusion: ISH is a rare disease, which occurs at early age. ISH has special clinical features: joint contracture and limited mobility, special skin rash and pigmentation, skin hyaline degeneration of pathological examination. ISH is an autosomal recessive genetic disease with mutation gene located in the fourth chromosome q21 position. Currently there is no effective treatment for ISH, with which patients are prone to die of recurrent infections.
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Affiliation(s)
- J Lu
- Departments of Pediatrics and Dermatology, Central South University Xiangya School of Medicine Affiliated Haikou Hospital, Haikou 570208, China
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Soni JP, Puri RD, Jetha K, Bhavani GSL, Chaudhary M, Kohli S, Verma IC. Infantile Systemic Hyalinosis: Novel Founder Mutation in the Initiation Codon among "Malis (Farmers)" in Jodhpur. Indian J Pediatr 2016; 83:1341-1345. [PMID: 27753005 DOI: 10.1007/s12098-016-2218-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 08/10/2016] [Indexed: 10/20/2022]
Abstract
Infantile systemic hyalinosis (OMIM 236490) is a progressive autosomal recessive disorder characterized by widespread deposition of hyaline material in many tissues leading to multiple subcutaneous skin nodules, gingival hypertrophy and joint contractures. The authors describe five children from four unrelated families, from the "mali (farmer)" community in Jodhpur, with the disorder. All of them had classical clinical features, and four died from severe infections between age of 7 mo to 3 y. Two affected children had the same, but novel mutation in the initiation codon, in homozygous form c.1 A > G; p. M1? in capillary morphogenesis protein-2 (CMG2), or ANTXR2 gene on chromosome 4q21.21. The other two parents had the same mutation in heterozygous form. It is likely that this is a founder mutation in this community.
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Affiliation(s)
- Jai Prakash Soni
- Genetic Clinic, Department of Pediatrics, Mother and Chlid Hospital, MDM Hospital, Shastri Nagar, Jodhpur, Rajasthan, India.
| | - Ratna D Puri
- Institute of Genetics and Genomics, Sir Ganga Ram Hospital, Rajender Nagar, New Delhi, 110060, India
| | - Kapil Jetha
- Genetic Clinic, Department of Pediatrics, Mother and Chlid Hospital, MDM Hospital, Shastri Nagar, Jodhpur, Rajasthan, India
| | - G S L Bhavani
- Genetic Clinic, Department of Pediatrics, Mother and Chlid Hospital, MDM Hospital, Shastri Nagar, Jodhpur, Rajasthan, India
| | - Monika Chaudhary
- Genetic Clinic, Department of Pediatrics, Mother and Chlid Hospital, MDM Hospital, Shastri Nagar, Jodhpur, Rajasthan, India
| | - Sudha Kohli
- Institute of Genetics and Genomics, Sir Ganga Ram Hospital, Rajender Nagar, New Delhi, 110060, India
| | - I C Verma
- Institute of Genetics and Genomics, Sir Ganga Ram Hospital, Rajender Nagar, New Delhi, 110060, India.
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Affiliation(s)
- Dhanya Lakshmi Narayanan
- Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute, Lucknow, Uttar Pradesh, 226014, India
| | - Shubha R Phadke
- Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute, Lucknow, Uttar Pradesh, 226014, India.
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24
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Abstract
Juvenile hyaline fibromatosis (JHF) is a rare autosomal recessive disorder characterized by hyalinizing fibrosis of the skin and internal organs. Clinical features include multiple papular skin lesions, gingival hyperplasia, joint contractures, and osteolytic bone lesions. The systemic variant of JHF, known as infantile systemic hyalinosis (ISH), has an early onset and poor prognosis. Histological examination of cutaneous lesions shows bland-appearing fibroblasts within amorphous eosinophilic hyaline depositions. JHF and infantile systemic hyalinosis form a clinical spectrum with higher mortality that is typically observed in systemic cases. Here, the authors present a case of systemic hyalinosis with a heterozygous mutation in CMG2 that resulted in improved survival.
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Affiliation(s)
- Maral Rahvar
- *Department of Pathology, Loma Linda University, Loma Linda, CA; and Departments of †Dermatology, and ‡Pathology, Stanford University, Stanford, CA
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Vahidnezhad H, Ziaee V, Youssefian L, Li Q, Sotoudeh S, Uitto J. Infantile systemic hyalinosis in an Iranian family with a mutation in the CMG2/ANTXR2 gene. Clin Exp Dermatol 2015; 40:636-9. [PMID: 25754064 DOI: 10.1111/ced.12616] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/11/2014] [Indexed: 11/28/2022]
Abstract
Infantile systemic hyalinosis (ISH) is an extremely rare genodermatosis, characterized by thickened skin, joint contractures and subcutaneous nodules. ISH is caused by mutations in the CMG2 gene, which encodes a protein of unknown function. In this report, we describe a patient with ISH, who was a twin born to a consanguineous Iranian couple, and who demonstrated unusual skin findings in addition to the characteristic features of ISH. Mutation analysis disclosed a homozygous deletion mutation, c.1074delT in CMG2, resulting in a frameshift and premature termination codon 50 amino acids downstream of the deletion. This information adds to the recurring nature of this mutation in ISH, with implications for genetic counselling in extended families with a history of this disease.
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Affiliation(s)
- H Vahidnezhad
- Biotechnology Research Center, Department of Molecular Medicine, Pasteur Institute of Iran, Tehran, Iran
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - V Ziaee
- Pediatric Rheumatology Research Group, Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Department of Pediatrics, Children's Medical Center, Pediatrics Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - L Youssefian
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Q Li
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - S Sotoudeh
- Department of Dermatology, Children's Medical Center, Pediatric Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
| | - J Uitto
- Department of Dermatology and Cutaneous Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
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Cherkaoui Jaouad I, Guaoua S, Hajjioui A, Sefiani A. Hyaline fibromatosis syndrome with mutation c.1074delT of the CMG2 gene: a case report. J Med Case Rep 2014; 8:291. [PMID: 25186005 PMCID: PMC4158768 DOI: 10.1186/1752-1947-8-291] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Accepted: 07/12/2014] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Juvenile hyaline fibromatosis and infantile systemic hyalinosis are variants of the same autosomal recessive syndrome; hyaline fibromatosis syndrome, characterized by papulonodular skin lesions, gingival hypertrophy, flexion contractures of joints, osteolytic bone lesions and stunted growth. Infantile systemic hyalinosis is distinguished from juvenile hyaline fibromatosis by its more severe phenotype, which includes hyaline deposits in multiple organs, recurrent infections and death within the first two years of life.Hyaline fibromatosis syndrome is due to mutations of the gene-encoding capillary morphogenesis protein 2 (CMG2). Cases have been reported in different countries but to the best of our knowledge, this is the first reported Moroccan patient with hyaline fibromatosis syndrome and carrying the CMG2 mutation. CASE PRESENTATION We report the case of an eight-year-old Moroccan male patient with typical features of hyaline fibromatosis syndrome: multiple recurring subcutaneous tumors, gingival hypertrophy, joint contractures and other anomalies carrying a homozygous mutation in the CMG2 gene. The identification of the mutation in our patient allowed us to do a presymptomatic diagnosis in our patient's sister, a two-day-old newborn, who is carrying the familial mutation in the heterozygous state. Early recognition of this condition is important for genetic counseling and early treatment. CONCLUSIONS Hyaline fibromatosis syndrome might be underdiagnosed. Molecular diagnosis will help clinicians and geneticists, firstly to conduct genetic counseling, prenatal diagnosis and early treatment, and secondly to gain better understanding of the disease and genotype-phenotype correlations.
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Affiliation(s)
- Imane Cherkaoui Jaouad
- Centre de Génomique Humaine, Faculté de Médecine et de Pharmacie, Université Mohammed V Souissi, Av. Mohamed Belarbi El Alaoui, Rabat 6203 Rabat, Morocco
- Département de Génétique Médicale, Institut National d'Hygiène, Av. Ibn Batouta, BP 769, CP 11400 Rabat, Morocco
| | - Soukaina Guaoua
- Centre de Génomique Humaine, Faculté de Médecine et de Pharmacie, Université Mohammed V Souissi, Av. Mohamed Belarbi El Alaoui, Rabat 6203 Rabat, Morocco
- Département de Génétique Médicale, Institut National d'Hygiène, Av. Ibn Batouta, BP 769, CP 11400 Rabat, Morocco
| | | | - Abdelaziz Sefiani
- Centre de Génomique Humaine, Faculté de Médecine et de Pharmacie, Université Mohammed V Souissi, Av. Mohamed Belarbi El Alaoui, Rabat 6203 Rabat, Morocco
- Département de Génétique Médicale, Institut National d'Hygiène, Av. Ibn Batouta, BP 769, CP 11400 Rabat, Morocco
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Tümer L, Kasapkara C, Fong K, Serdaroğlu A, McGrath JA. Hyaline fibromatosis syndrome resulting from a new homozygous missense mutation, p.Gly116Val, in ANTXR2. J Dermatol 2013; 40:677-8. [PMID: 23734713 DOI: 10.1111/1346-8138.12182] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Rampoldi L. Different molecular consequences of frameshift mutations in the ANTXR2 gene. Hum Mutat 2013; 34:v. [PMID: 23780735 DOI: 10.1002/humu.22190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Yan SE, Lemmin T, Salvi S, Lausch E, Superti-Furga A, Rokicki D, Dal Peraro M, van der Goot FG. In-depth analysis of hyaline fibromatosis syndrome frameshift mutations at the same site reveal the necessity of personalized therapy. Hum Mutat 2013; 34:1005-17. [PMID: 23554269 DOI: 10.1002/humu.22324] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 03/20/2013] [Indexed: 11/07/2022]
Abstract
Hyaline fibromatosis syndrome is an autosomal recessive disease caused by mutations in ANTXR2, a gene involved in extracellular matrix homeostasis. Sixty percent of patients carry frameshift mutations at a mutational hotspot in exon 13. We show in patient cells that these mutations lead to low ANTXR2 mRNA and undetectable protein levels. Ectopic expression of the proteins encoded by the mutated genes reveals that a two base insertion leads to the synthesis of a protein that is rapidly targeted to the ER-associated degradation pathway due to the modified structure of the cytosolic tail, which instead of being hydrophilic and highly disordered as in wild type ANTXR2, is folded and exposes hydrophobic patches. In contrast, one base insertion leads to a truncated protein that properly localizes to the plasma membrane and retains partial function. We next show that targeting the nonsense mediated mRNA decay pathway in patient cells leads to a rescue of ANTXR2 protein in patients carrying one base insertion but not in those carrying two base insertions. This study highlights the importance of in-depth analysis of the molecular consequences of specific patient mutations, which even when they occur at the same site can have drastically different consequences.
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Affiliation(s)
- Shixu E Yan
- Global Health Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
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Fong K, Rama Devi AR, Lai-Cheong JE, Chirla D, Panda SK, Liu L, Tosi I, McGrath JA. Infantile systemic hyalinosis associated with a putative splice-site mutation in the ANTXR2 gene. Clin Exp Dermatol 2012; 37:635-8. [PMID: 22300424 DOI: 10.1111/j.1365-2230.2011.04287.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Infantile systemic hyalinosis (ISH) is a rare autosomal recessive genetic disorder characterized by dermal and subcutaneous fibromatosis, joint contractures and bone deformities. The condition usually presents at birth, resulting in death in infancy. ISH is caused by mutations in the anthrax toxin receptor 2 gene, ANTXR2, also known as CMG2. We report an Indian child with ISH in whom we identified a homozygous acceptor splice site mutation, IVS2-4G>A. In silico analysis of this sequence showed that it changed predicted cryptic splicing, leading to out-of-frame transcripts and little, if any, functional protein. Mutations in the ANTXR2 gene can also cause juvenile hyaline fibromatosis (JHF). Although there are currently no effective treatments for ISH or JHF, identification of pathogenetic mutations in the ANTXR2 gene makes DNA-based prenatal diagnosis feasible for subsequent pregnancies.
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Affiliation(s)
- K Fong
- St John's Institute of Dermatology, King's College London (Guy's Campus), London, UK
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31
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Denadai R, Raposo-Amaral CE, Bertola D, Kim C, Alonso N, Hart T, Han S, Stelini RF, Buzzo CL, Raposo-Amaral CA, Hart PS. Identification of 2 novel ANTXR2 mutations in patients with hyaline fibromatosis syndrome and proposal of a modified grading system. Am J Med Genet A 2012; 158A:732-42. [PMID: 22383261 PMCID: PMC4264531 DOI: 10.1002/ajmg.a.35228] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 12/15/2011] [Indexed: 02/05/2023]
Abstract
Juvenile hyaline fibromatosis (JHF) and infantile systemic hyalinosis (ISH) are rare, autosomal recessive disorders of the connective tissue caused by mutations in the gene encoding the anthrax toxin receptor 2 protein (ANTXR2) located on chromosome 4q21. Characteristically, these conditions present with overlapping clinical features, such as nodules and/or pearly papules, gingival hyperplasia, flexion contractures of the joints, and osteolytic bone defects. The present report describes a pair of sibs and three other JHF/ISH patients whose diagnoses were based on typical clinical manifestations and confirmed by histopathologic analyses and/or molecular analysis. A comparison of ISH and JHF, additional thoughts about new terminology (hyaline fibromatosis syndrome) and a modified grading system are also included.
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Affiliation(s)
- Rafael Denadai
- School of Medical Sciences, Marília University, Marília, SP, Brazil
| | - Cassio E. Raposo-Amaral
- Institute of Plastic and Craniofacial Surgery, Brazilian Society of Research and Assistance to Craniofacial Rehabilitation Hospital (SOBRAPAR), Campinas, SP, Brazil
| | - Débora Bertola
- Genetics Unit, Department of Pediatrics, Instituto da Criança, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Chong Kim
- Genetics Unit, Department of Pediatrics, Instituto da Criança, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Nivaldo Alonso
- Division of Plastic Surgery, Department of Surgery, Faculdade de Medicina, Universidade de São Paulo (USP), São Paulo, SP, Brazil
| | - Thomas Hart
- Human Craniofacial Genetics Section, National Institute of Dental and Craniofacial Research (NIDCR), National Institutes of Health (NIH), Bethesda, Maryland
| | - Sangwoo Han
- National Institute of Dental Research, National Institutes of Health (NIH), Bethesda, Maryland
| | - Rafael F. Stelini
- Department of Anatomic Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Celso L. Buzzo
- Institute of Plastic and Craniofacial Surgery, Brazilian Society of Research and Assistance to Craniofacial Rehabilitation Hospital (SOBRAPAR), Campinas, SP, Brazil
| | - Cesar A. Raposo-Amaral
- Institute of Plastic and Craniofacial Surgery, Brazilian Society of Research and Assistance to Craniofacial Rehabilitation Hospital (SOBRAPAR), Campinas, SP, Brazil
| | - P. Suzanne Hart
- Office of the Clinical Director, National Human Genome Research Institute, National Institutes of Health (NIH), Bethesda, Maryland
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Abstract
Capillary morphogenesis gene 2 (CMG2) is a type I membrane protein involved in the homeostasis of the extracellular matrix. While it shares interesting similarities with integrins, its exact molecular role is unknown. The interest and knowledge about CMG2 largely stems from the fact that it is involved in two diseases, one infectious and one genetic. CMG2 is the main receptor of the anthrax toxin, and knocking out this gene in mice renders them insensitive to infection with Bacillus anthracis spores. On the other hand, mutations in CMG2 lead to a rare but severe autosomal recessive disorder in humans called Hyaline Fibromatosis Syndrome (HFS). We will here review what is known about the structure of CMG2 and its ability to mediate anthrax toxin entry into cell. We will then describe the limited knowledge available concerning the physiological role of CMG2. Finally, we will describe HFS and the consequences of HFS-associated mutations in CMG2 at the molecular and cellular level.
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Affiliation(s)
- Julie Deuquet
- Ecole Polytechnique Fédérale de Lausanne, Institute of Global Health, Lausanne, Switzerland
| | - Ekkehart Lausch
- Department of Pediatrics, University of Freiburg, Freiburg, Germany
| | - Andrea Superti-Furga
- Division of Molecular Pediatrics, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - F Gisou van der Goot
- Ecole Polytechnique Fédérale de Lausanne, Institute of Global Health, Lausanne, Switzerland
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33
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Abstract
Systemic hyalinosis is a rare autosomal recessive inheritance disease characterized by accumulation of amorphous, unidentified hyaline material in skin and other organs, which leads to papulonodular skin lesions, gingival hypertrophy, flexion contractures of the joints, and large subcutaneous tumors. It is composed of 2 allelic syndromes, infantile systemic hyalinosis and juvenile hyaline fibromatosis. Here we describe a patient with juvenile hyaline fibromatosis confirmed by clinical and histopathologic findings, and genetic analysis, which revealed a novel homozygous splice site mutation IVS14+1G→T on exon 14 in anthrax toxin receptor 2 gene.
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Affiliation(s)
- Yun-Ying Wang
- Department of Medical Genetics, Affiliated Qingdao Municipal Hospital of Qingdao University Medical College, Qingdao, Shandong, China
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Deuquet J, Lausch E, Guex N, Abrami L, Salvi S, Lakkaraju A, Ramirez MCM, Martignetti JA, Rokicki D, Bonafe L, Superti-Furga A, van der Goot FG. Hyaline fibromatosis syndrome inducing mutations in the ectodomain of anthrax toxin receptor 2 can be rescued by proteasome inhibitors. EMBO Mol Med 2011; 3:208-21. [PMID: 21328543 PMCID: PMC3377065 DOI: 10.1002/emmm.201100124] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Revised: 01/14/2011] [Accepted: 01/18/2011] [Indexed: 11/25/2022] Open
Abstract
Hyaline Fibromatosis Syndrome (HFS) is a human genetic disease caused by mutations in the anthrax toxin receptor 2 (or cmg2) gene, which encodes a membrane protein thought to be involved in the homeostasis of the extracellular matrix. Little is known about the structure and function of the protein or the genotype–phenotype relationship of the disease. Through the analysis of four patients, we identify three novel mutants and determine their effects at the cellular level. Altogether, we show that missense mutations that map to the extracellular von Willebrand domain or the here characterized Ig-like domain of CMG2 lead to folding defects and thereby to retention of the mutated protein in the endoplasmic reticulum (ER). Mutations in the Ig-like domain prevent proper disulphide bond formation and are more efficiently targeted to ER-associated degradation. Finally, we show that mutant CMG2 can be rescued in fibroblasts of some patients by treatment with proteasome inhibitors and that CMG2 is then properly transported to the plasma membrane and signalling competent, identifying the ER folding and degradation pathway components as promising drug targets for HFS.
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Affiliation(s)
- Julie Deuquet
- Ecole Polytechnique Fédérale de Lausanne, Global Health InstituteLausanne, Switzerland
| | - Ekkehart Lausch
- Department of Pediatrics, University of FreiburgFreiburg, Germany
| | - Nicolas Guex
- Vital-IT Group, Swiss Institute of BioinformaticsLausanne Switzerland
| | - Laurence Abrami
- Ecole Polytechnique Fédérale de Lausanne, Global Health InstituteLausanne, Switzerland
| | - Suzanne Salvi
- Ecole Polytechnique Fédérale de Lausanne, Global Health InstituteLausanne, Switzerland
| | - Asvin Lakkaraju
- Ecole Polytechnique Fédérale de Lausanne, Global Health InstituteLausanne, Switzerland
| | - Maria Celeste M Ramirez
- Department of Genetics and Genomic Sciences, Mount Sinai School of MedicineNew York, NY, USA
| | - John A Martignetti
- Department of Genetics and Genomic Sciences, Mount Sinai School of MedicineNew York, NY, USA
- Department of Pediatrics, Mount Sinai School of MedicineNew York, NY, USA
- Department of Oncological Sciences, Mount Sinai School of MedicineNew York, NY, USA
| | - Dariusz Rokicki
- Division of Inborn Errors of Metabolism, Children's Memorial Health InstituteWarsaw, Poland
| | - Luisa Bonafe
- Division of Molecular Pediatrics, Centre Hospitalier Universitaire Vaudois, University of LausanneSwitzerland
| | - Andrea Superti-Furga
- Department of Pediatrics, University of FreiburgFreiburg, Germany
- Division of Molecular Pediatrics, Centre Hospitalier Universitaire Vaudois, University of LausanneSwitzerland
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Tzellos TG, Batzios SP, Dionyssopoulos A, Karakiulakis G, Papakonstantinou E. Differential expression of matrix metalloproteinases and proteoglycans in Juvenile Hyaline Fibromatosis. J Dermatol Sci 2011; 61:94-100. [PMID: 21208784 DOI: 10.1016/j.jdermsci.2010.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2010] [Revised: 12/01/2010] [Accepted: 12/07/2010] [Indexed: 10/18/2022]
Abstract
BACKGROUND Juvenile Hyaline Fibromatosis (JHF) is a rare autosomal recessive disorder, histologically characterized by the production and deposition of an unidentified hyaline material in the skin and other organs. Extracellular matrix molecules are implicated in the development of skin lesion which is debilitating and recurrent and, so far, no treatment is satisfactory. OBJECTIVE To investigate the expression of matrix metalloproteinases (MMPs), their tissue inhibitors (TIMPs) and proteoglycans in lesional as compared to site-matched lesion-free skin tissue specimens of a JHF patient, aiming to elucidate the aetiopathological mechanisms involved in the development of JHF skin lesions. METHODS Gelatinase activity of MMP-2 and MMP-9 was investigated by gelatine zymography. Protein levels of MMP-2, MMP-9, TIMP-1 and TIMP-2 in skin tissue extracts were measured by ELISA. Gene expression of MMPs, TIMPs and proteoglycans was examined by quantitative RT-PCR. RESULTS JHF lesions exhibited significantly higher activity as well as elevated protein and gene expression of MMP-2 and MMP-9, as compared to lesion-free skin tissue specimens. Decorin was downregulated and aggrecan was upregulated in lesional skin, as compared to normal skin. CONCLUSION The results presented in this study indicate that MMPs and proteoglycans may be involved in the pathogenesis of JHF and therefore these molecules may offer alternative targets for pharmacological intervention to achieve more radical and effective treatment.
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Affiliation(s)
- Thrasivoulos G Tzellos
- 2nd Department of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Greece
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36
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El-Kamah GY, Fong K, El-Ruby M, Afifi HH, Clements SE, Lai-Cheong JE, Amr K, El-Darouti M, McGrath JA. Spectrum of mutations in the ANTXR2 (CMG2) gene in infantile systemic hyalinosis and juvenile hyaline fibromatosis. Br J Dermatol 2010; 163:213-5. [PMID: 20331448 DOI: 10.1111/j.1365-2133.2010.09769.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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