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Beyens A, Lietaer C, Claes K, De Baere E, Goeteyn M, Lerut B, Syryn H, Vanakker O, Van der Meulen J, Vanwalleghem L, Callewaert B. HRAS-related epidermal nevus syndromes: Expansion of the spectrum with first branchial arch defects. Clin Genet 2023; 103:709-713. [PMID: 36896710 DOI: 10.1111/cge.14323] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/11/2023]
Abstract
Epidermal nevus syndrome (ENS) comprises a heterogeneous group of neurocutaneous syndromes associated with the presence of epidermal nevi and variable extracutaneous manifestations. Postzygotic activating HRAS pathogenic variants were previously identified in nevus sebaceous (NS), keratinocytic epidermal nevus (KEN), and different ENS, including Schimmelpenning-Feuerstein-Mims and cutaneous-skeletal-hypophosphatasia syndrome (CSHS). Skeletal involvement in HRAS-related ENS ranges from localized bone dysplasia in association with KEN to fractures and limb deformities in CSHS. We describe the first association of HRAS-related ENS and auricular atresia, thereby expanding the disease spectrum with first branchial arch defects if affected by the mosaic variant. In addition, this report illustrates the first concurrent presence of verrucous EN, NS, and nevus comedonicus (NC), indicating the possibility of mosaic HRAS variation as an underlying cause of NC. Overall, this report extends the pleiotropy of conditions associated with mosaic pathogenic variants in HRAS affecting ectodermal and mesodermal progenitor cells.
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Affiliation(s)
- Aude Beyens
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University Hospital, Ghent, Belgium.,Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - Charlotte Lietaer
- Department of Otorhinolaryngology, AZ Sint Jan Brugge-Oostende, Bruges, Belgium
| | - Kathleen Claes
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University Hospital, Ghent, Belgium
| | - Elfride De Baere
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University Hospital, Ghent, Belgium
| | - Marleen Goeteyn
- Department of Dermatology, AZ Sint Jan Brugge-Oostende, Bruges, Belgium
| | - Bob Lerut
- Department of Otorhinolaryngology, AZ Sint Jan Brugge-Oostende, Bruges, Belgium
| | - Hannes Syryn
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University Hospital, Ghent, Belgium
| | - Olivier Vanakker
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University Hospital, Ghent, Belgium
| | - Joni Van der Meulen
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University Hospital, Ghent, Belgium.,Molecular Diagnostics Ghent University Hospital (MDG), Ghent University Hospital, Ghent, Belgium
| | | | - Bert Callewaert
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University Hospital, Ghent, Belgium
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2
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De Feyter S, Beyens A, Callewaert B. ATP7A-related copper transport disorders: A systematic review and definition of the clinical subtypes. J Inherit Metab Dis 2023; 46:163-173. [PMID: 36692329 DOI: 10.1002/jimd.12590] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/11/2023] [Accepted: 01/18/2023] [Indexed: 01/25/2023]
Abstract
In patients with ATP7A-related disorders, counseling is challenging due to clinical overlap between the entities, the absence of predictive biomarkers and a clear genotype-phenotype correlation. We performed a systematic literature review by querying the MEDLINE and Embase databases identifying 143 relevant papers. We recorded data on the phenotype and genotype in 162 individuals with a molecularly confirmed ATP7A-related disorder in order to identify differentiating clinical criteria, evaluate genotype-phenotype correlations and propose management guidelines. Early seizures are specific for classical Menkes disease (CMD), that is characterized by early-onset neurodegenerative disease with high mortality rates. Ataxia is an independent indicator for atypical Menkes disease, that shows better survival rates than CMD. Bony exostoses, radial head dislocations, herniations and dental abnormalities are specific for occipital horn syndrome (OHS) that may further present with developmental delay and connective tissue manifestations. Intracranial tortuosity and bladder diverticula, both with high risk of complications, are common among all subtypes. Low ceruloplasmin is a more sensitive and discriminating biomarker for ATP7A-related disorders than serum copper. Truncating mutations are frequently associated with CMD, in contrast with splice site and intronic mutations which are more prevalent in OHS.
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Affiliation(s)
- S De Feyter
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - A Beyens
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - B Callewaert
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
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3
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Beyens A, Dequeker L, Brems H, Janssens S, Syryn H, D’Hooghe A, De Paepe P, Vanwalleghem L, Stockman A, Vankwikelberge E, De Schepper S, Goeteyn M, Delbeke P, Callewaert B. Identification of Codon 146 KRAS Variants in Isolated Epidermal Nevus and Multiple Lesions in Oculoectodermal Syndrome: Confirmation of the Phenotypic Continuum of Mosaic RASopathies. Int J Mol Sci 2022; 23:ijms23074036. [PMID: 35409398 PMCID: PMC8999796 DOI: 10.3390/ijms23074036] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/03/2022] [Accepted: 04/04/2022] [Indexed: 01/31/2023] Open
Abstract
Mosaic RASopathies are a molecularly heterogeneous group of (neuro)cutaneous syndromes with high phenotypical variability. Postzygotic variants in KRAS have been described in oculoectodermal syndrome (OES), encephalocraniocutaneous lipomatosis (ECCL) and epidermal nevus syndrome (ENS). This study confirms the continuum of mosaic neurocutaneous RASopathies showing codon 146 KRAS variants in an individual with OES and, for the first time, in an individual with (isolated) epidermal nevus. The presence of a nevus psiloliparus in individuals with OES indicates that this finding is not specific for ECCL and highlights the phenotypical overlap between ECCL and OES. The presence of the somatic KRAS variant in the nevus psiloliparus resolves the underlying molecular etiology of this fatty-tissue nevus. In addition, this finding refutes the theory of non-allelic twin-spotting as an underlying hypothesis to explain the concurrent presence of two different mosaicisms in one individual. The identification of codon 146 KRAS variants in isolated epidermal nevus introduces a new hot spot for this condition, which is useful for increasing molecular genetic testing using targeted gene sequencing panels.
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Affiliation(s)
- Aude Beyens
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (A.B.); (S.J.); (H.S.)
- Department of Biomolecular Medicine, Ghent University Hospital, 9000 Ghent, Belgium
- Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium; (E.V.); (S.D.S.)
| | - Laure Dequeker
- Department of Ophthalmology, General Hospital Sint-Jan Brugge-Oostende, 8000 Bruges, Belgium; (L.D.); (P.D.)
- Department of Ophthalmology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Hilde Brems
- Department of Human Genetics, University Hospital Leuven, 3000 Leuven, Belgium;
| | - Sandra Janssens
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (A.B.); (S.J.); (H.S.)
- Department of Biomolecular Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - Hannes Syryn
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (A.B.); (S.J.); (H.S.)
- Department of Biomolecular Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - Anne D’Hooghe
- Department of Pediatrics, General Hospital Sint-Jan Brugge-Oostende, 8000 Bruges, Belgium
| | - Pascale De Paepe
- Department of Pathology, General Hospital Sint-Jan Brugge-Oostende, 8000 Bruges, Belgium; (P.D.P.); (L.V.)
| | - Lieve Vanwalleghem
- Department of Pathology, General Hospital Sint-Jan Brugge-Oostende, 8000 Bruges, Belgium; (P.D.P.); (L.V.)
| | - Annelies Stockman
- Department of Dermatology, General Hospital Delta Roeselare-Menen-Torhout, 8820 Torhout, Belgium;
| | - Elena Vankwikelberge
- Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium; (E.V.); (S.D.S.)
| | - Sofie De Schepper
- Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium; (E.V.); (S.D.S.)
| | - Marleen Goeteyn
- Department of Dermatology, General Hospital Sint-Jan Brugge-Oostende, 8000 Bruges, Belgium;
| | - Patricia Delbeke
- Department of Ophthalmology, General Hospital Sint-Jan Brugge-Oostende, 8000 Bruges, Belgium; (L.D.); (P.D.)
| | - Bert Callewaert
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (A.B.); (S.J.); (H.S.)
- Department of Biomolecular Medicine, Ghent University Hospital, 9000 Ghent, Belgium
- Correspondence:
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Rosier P, Deroux A, Beyens A, Callewaert B, Leccia MT. Major response to adalimumab in patient with Sweet syndrome associated to an acquired cutis laxa. J Eur Acad Dermatol Venereol 2021; 36:e354-e356. [PMID: 34897822 DOI: 10.1111/jdv.17867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 12/07/2021] [Indexed: 11/27/2022]
Affiliation(s)
- P Rosier
- Department of Dermatology, Grenoble Alpes University Hospital, Grenoble, France
| | - A Deroux
- Department of Internal medecine, Grenoble Alpes University Hospital, Grenoble, France
| | - A Beyens
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium.,Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - B Callewaert
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - M-T Leccia
- Department of Dermatology, Grenoble Alpes University Hospital, Grenoble, France
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Pottie L, Adamo CS, Beyens A, Lütke S, Tapaneeyaphan P, De Clercq A, Salmon PL, De Rycke R, Gezdirici A, Gulec EY, Khan N, Urquhart JE, Newman WG, Metcalfe K, Efthymiou S, Maroofian R, Anwar N, Maqbool S, Rahman F, Altweijri I, Alsaleh M, Abdullah SM, Al-Owain M, Hashem M, Houlden H, Alkuraya FS, Sips P, Sengle G, Callewaert B. Bi-allelic premature truncating variants in LTBP1 cause cutis laxa syndrome. Am J Hum Genet 2021; 108:2386-2388. [PMID: 34861177 DOI: 10.1016/j.ajhg.2021.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Beyens A, Pottie L, Sips P, Callewaert B. Clinical and Molecular Delineation of Cutis Laxa Syndromes: Paradigms for Homeostasis. Adv Exp Med Biol 2021; 1348:273-309. [PMID: 34807425 DOI: 10.1007/978-3-030-80614-9_13] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Cutis laxa (CL) syndromes are a large and heterogeneous group of rare connective tissue disorders that share loose redundant skin as a hallmark clinical feature, which reflects dermal elastic fiber fragmentation. Both acquired and congenital-Mendelian- forms exist. Acquired forms are progressive and often preceded by inflammatory triggers in the skin, but may show systemic elastolysis. Mendelian forms are often pleiotropic in nature and classified upon systemic manifestations and mode of inheritance. Though impaired elastogenesis is a common denominator in all Mendelian forms of CL, the underlying gene defects are diverse and affect structural components of the elastic fiber or impair metabolic pathways interfering with cellular trafficking, proline synthesis, or mitochondrial functioning. In this chapter we provide a detailed overview of the clinical and molecular characteristics of the different cutis laxa types and review the latest insights on elastic fiber assembly and homeostasis from both human and animal studies.
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Affiliation(s)
- Aude Beyens
- Center for Medical Genetics Ghent, Department of Dermatology, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Lore Pottie
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Patrick Sips
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Bert Callewaert
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University Hospital, Ghent University, Ghent, Belgium.
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7
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Boel A, Burger J, Vanhomwegen M, Beyens A, Renard M, Barnhoorn S, Casteleyn C, Reinhardt DP, Descamps B, Vanhove C, van der Pluijm I, Coucke P, Willaert A, Essers J, Callewaert B. Slc2a10 knock-out mice deficient in ascorbic acid synthesis recapitulate aspects of arterial tortuosity syndrome and display mitochondrial respiration defects. Hum Mol Genet 2021; 29:1476-1488. [PMID: 32307537 DOI: 10.1093/hmg/ddaa071] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/08/2020] [Accepted: 04/15/2020] [Indexed: 12/19/2022] Open
Abstract
Arterial tortuosity syndrome (ATS) is a recessively inherited connective tissue disorder, mainly characterized by tortuosity and aneurysm formation of the major arteries. ATS is caused by loss-of-function mutations in SLC2A10, encoding the facilitative glucose transporter GLUT10. Former studies implicated GLUT10 in the transport of dehydroascorbic acid, the oxidized form of ascorbic acid (AA). Mouse models carrying homozygous Slc2a10 missense mutations did not recapitulate the human phenotype. Since mice, in contrast to humans, are able to intracellularly synthesize AA, we generated a novel ATS mouse model, deficient for Slc2a10 as well as Gulo, which encodes for L-gulonolactone oxidase, an enzyme catalyzing the final step in AA biosynthesis in mouse. Gulo;Slc2a10 double knock-out mice showed mild phenotypic anomalies, which were absent in single knock-out controls. While Gulo;Slc2a10 double knock-out mice did not fully phenocopy human ATS, histological and immunocytochemical analysis revealed compromised extracellular matrix formation. Transforming growth factor beta signaling remained unaltered, while mitochondrial function was compromised in smooth muscle cells derived from Gulo;Slc2a10 double knock-out mice. Altogether, our data add evidence that ATS is an ascorbate compartmentalization disorder, but additional factors underlying the observed phenotype in humans remain to be determined.
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Affiliation(s)
- Annekatrien Boel
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium.,Ghent-Fertility and Stem cell Team, Department for Reproductive Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - Joyce Burger
- Department of Molecular Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Clinical Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Marine Vanhomwegen
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Aude Beyens
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium.,Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Marjolijn Renard
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Sander Barnhoorn
- Department of Molecular Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Clinical Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Christophe Casteleyn
- Department of Morphology, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Dieter P Reinhardt
- Department of Anatomy and Cell Biology, Faculty of Medicine, Faculty of Dentistry, McGill University, H3A 0C7 Montreal, Quebec, Canada
| | - Benedicte Descamps
- Infinity (IBiTech-MEDISIP), Department of Electronics and Information Systems, Ghent University, 9000 Ghent, Belgium
| | - Christian Vanhove
- Infinity (IBiTech-MEDISIP), Department of Electronics and Information Systems, Ghent University, 9000 Ghent, Belgium
| | - Ingrid van der Pluijm
- Department of Molecular Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Clinical Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Vascular Surgery, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Paul Coucke
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Andy Willaert
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Jeroen Essers
- Department of Molecular Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Clinical Genetics, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Vascular Surgery, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands.,Department of Radiation Oncology, Erasmus University Medical Center, 3015 GD Rotterdam, The Netherlands
| | - Bert Callewaert
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
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8
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Pottie L, Adamo CS, Beyens A, Lütke S, Tapaneeyaphan P, De Clercq A, Salmon PL, De Rycke R, Gezdirici A, Gulec EY, Khan N, Urquhart JE, Newman WG, Metcalfe K, Efthymiou S, Maroofian R, Anwar N, Maqbool S, Rahman F, Altweijri I, Alsaleh M, Abdullah SM, Al-Owain M, Hashem M, Houlden H, Alkuraya FS, Sips P, Sengle G, Callewaert B. Bi-allelic premature truncating variants in LTBP1 cause cutis laxa syndrome. Am J Hum Genet 2021; 108:1095-1114. [PMID: 33991472 PMCID: PMC8206382 DOI: 10.1016/j.ajhg.2021.04.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 01/23/2021] [Accepted: 04/22/2021] [Indexed: 02/02/2023] Open
Abstract
Latent transforming growth factor β (TGFβ)-binding proteins (LTBPs) are microfibril-associated proteins essential for anchoring TGFβ in the extracellular matrix (ECM) as well as for correct assembly of ECM components. Variants in LTBP2, LTBP3, and LTBP4 have been identified in several autosomal recessive Mendelian disorders with skeletal abnormalities with or without impaired development of elastin-rich tissues. Thus far, the human phenotype associated with LTBP1 deficiency has remained enigmatic. In this study, we report homozygous premature truncating LTBP1 variants in eight affected individuals from four unrelated consanguineous families. Affected individuals present with connective tissue features (cutis laxa and inguinal hernia), craniofacial dysmorphology, variable heart defects, and prominent skeletal features (craniosynostosis, short stature, brachydactyly, and syndactyly). In vitro studies on proband-derived dermal fibroblasts indicate distinct molecular mechanisms depending on the position of the variant in LTBP1. C-terminal variants lead to an altered LTBP1 loosely anchored in the microfibrillar network and cause increased ECM deposition in cultured fibroblasts associated with excessive TGFβ growth factor activation and signaling. In contrast, N-terminal truncation results in a loss of LTBP1 that does not alter TGFβ levels or ECM assembly. In vivo validation with two independent zebrafish lines carrying mutations in ltbp1 induce abnormal collagen fibrillogenesis in skin and intervertebral ligaments and ectopic bone formation on the vertebrae. In addition, one of the mutant zebrafish lines shows voluminous and hypo-mineralized vertebrae. Overall, our findings in humans and zebrafish show that LTBP1 function is crucial for skin and bone ECM assembly and homeostasis.
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Affiliation(s)
- Lore Pottie
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent 9000, Belgium; Department of Biomolecular Medicine, Ghent University, Ghent 9000, Belgium
| | - Christin S Adamo
- Center for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne 50931, Germany; Department of Pediatrics and Adolescent Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne 50931, Germany
| | - Aude Beyens
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent 9000, Belgium; Department of Biomolecular Medicine, Ghent University, Ghent 9000, Belgium; Department of Dermatology, Ghent University Hospital, Ghent 9000, Belgium
| | - Steffen Lütke
- Center for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne 50931, Germany; Department of Pediatrics and Adolescent Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne 50931, Germany
| | - Piyanoot Tapaneeyaphan
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent 9000, Belgium; Department of Biomolecular Medicine, Ghent University, Ghent 9000, Belgium
| | - Adelbert De Clercq
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent 9000, Belgium; Department of Biomolecular Medicine, Ghent University, Ghent 9000, Belgium
| | | | - Riet De Rycke
- Department of Biomedical Molecular Biology, Ghent University, Ghent 9052, Belgium; VIB Center for Inflammation Research, Ghent 9052, Belgium; Ghent University Expertise Centre for Transmission Electron Microscopy and VIB Bioimaging Core, Ghent 9052, Belgium
| | - Alper Gezdirici
- Department of Medical Genetics, Basaksehir Cam and Sakura City Hospital, Istanbul 34480, Turkey
| | - Elif Yilmaz Gulec
- Department of Medical Genetics, Kanuni Sultan Suleyman Training and Research Hospital, Health Sciences University, Istanbul 34303, Turkey
| | - Naz Khan
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9WL, UK; Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester University NHS Foundation Trust, Manchester M13 9WL, UK
| | - Jill E Urquhart
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9WL, UK; Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester University NHS Foundation Trust, Manchester M13 9WL, UK
| | - William G Newman
- Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9WL, UK; Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester University NHS Foundation Trust, Manchester M13 9WL, UK
| | - Kay Metcalfe
- Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester University NHS Foundation Trust, Manchester M13 9WL, UK
| | - Stephanie Efthymiou
- Department of Neuromuscular Disorders, UCL Institute of Neurology, London WC1N 3BG, UK
| | - Reza Maroofian
- Department of Neuromuscular Disorders, UCL Institute of Neurology, London WC1N 3BG, UK
| | - Najwa Anwar
- Development and Behavioral Pediatrics Department, Institute of Child Health and The Children Hospital, Lahore 54000, Pakistan
| | - Shazia Maqbool
- Development and Behavioral Pediatrics Department, Institute of Child Health and The Children Hospital, Lahore 54000, Pakistan
| | - Fatima Rahman
- Development and Behavioral Pediatrics Department, Institute of Child Health and The Children Hospital, Lahore 54000, Pakistan
| | - Ikhlass Altweijri
- Department of Neurosurgery, King Khalid University Hospital, Riyadh 11211, Saudi Arabia
| | - Monerah Alsaleh
- Heart Centre, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
| | - Sawsan Mohamed Abdullah
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
| | - Mohammad Al-Owain
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia; Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh 11211, Saudi Arabia
| | - Mais Hashem
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
| | - Henry Houlden
- Department of Neuromuscular Disorders, UCL Institute of Neurology, London WC1N 3BG, UK
| | - Fowzan S Alkuraya
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia; Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh 11211, Saudi Arabia
| | - Patrick Sips
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent 9000, Belgium; Department of Biomolecular Medicine, Ghent University, Ghent 9000, Belgium
| | - Gerhard Sengle
- Center for Biochemistry, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne 50931, Germany; Department of Pediatrics and Adolescent Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne 50931, Germany; Center for Molecular Medicine Cologne, University of Cologne, Robert-Koch-Street 21, Cologne 50931, Germany; Cologne Center for Musculoskeletal Biomechanics, Cologne 50931, Germany
| | - Bert Callewaert
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent 9000, Belgium; Department of Biomolecular Medicine, Ghent University, Ghent 9000, Belgium.
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9
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McKenzie F, Mina K, Callewaert B, Beyens A, Dickinson JE, Jevon G, Papadimitriou J, Diness BR, Steensberg JN, Ek J, Baynam G. Severe congenital cutis laxa: Identification of novel homozygous LOX gene variants in two families. Clin Genet 2021; 100:168-175. [PMID: 33866545 DOI: 10.1111/cge.13969] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 11/28/2022]
Abstract
We report three babies from two families with a severe lethal form of congenital cutis laxa. All three had redundant and doughy-textured skin and two siblings from one family had facial dysmorphism. Echocardiograms showed thickened and poorly contractile hearts, arterial dilatation and tortuosity. Post-mortem examination in two of the babies further revealed widespread ectasia and tortuosity of medium and large sized arteries, myocardial hypertrophy, rib and skull fractures. The presence of fractures initially suggested a diagnosis of osteogenesis imperfecta. Under light microscopy bony matrices were abnormal and arterial wall architecture was grossly abnormal showing fragmented elastic fibres. Molecular analysis of known cutis laxa genes did not yield any pathogenic defects. Whole exome sequencing of DNA following informed consent identified two separate homozygous variants in the LOX (Lysyl Oxidase) gene. LOX belongs to the 5-lysyl oxidase gene family involved in initiation of cross-linking of elastin and collagen. A mouse model of a different variant in this gene recapitulates the phenotype seen in the three babies. Our findings suggest that the LOX gene is a novel cause of severe congenital cutis laxa with arterial tortuosity, bone fragility and respiratory failure.
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Affiliation(s)
- Fiona McKenzie
- Genetic Services of Western Australia, King Edward Memorial Hospital, Perth, Western Australia, Australia.,School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia
| | - Kym Mina
- Department of Diagnostic Genomics, PathWest, Perth, Western Australia, Australia
| | - Bert Callewaert
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Aude Beyens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium.,Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - Jan E Dickinson
- Maternal Fetal Medicine Service, King Edward Memorial Hospital, Perth, Western Australia, Australia.,Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, Western Australia, Australia
| | - Gareth Jevon
- Department of Paediatric Pathology, PathWest, Perth Children's Hospital, Perth, Western Australia, Australia
| | - John Papadimitriou
- Centre for Orthopaedic Translational Research, Medical School, University of Western Australia, Nedlands, Western Australia, Australia.,Pathwest Laboratories, Perth, Western Australia, Australia
| | - Birgitte Rode Diness
- Department of Clinical Genetics, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.,Department of Clinical Medicine, Copenhagen University, Copenhagen, Denmark
| | | | - Jakob Ek
- Department of Clinical Genetics, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Gareth Baynam
- Genetic Services of Western Australia, King Edward Memorial Hospital, Perth, Western Australia, Australia.,The Western Australia Register of Developmental Anomalies, Department of Health, Government of Western Australia, Perth, Western Australia, Australia.,School of Medicine, Division of Paediatrics and Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
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10
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Boel A, Veszelyi K, Németh CE, Beyens A, Willaert A, Coucke P, Callewaert B, Margittai É. Arterial Tortuosity Syndrome: An Ascorbate Compartmentalization Disorder? Antioxid Redox Signal 2021; 34:875-889. [PMID: 31621376 DOI: 10.1089/ars.2019.7843] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Significance: Cardiovascular disorders are the most important cause of morbidity and mortality in the Western world. Monogenic developmental disorders of the heart and vessels are highly valuable to study the physiological and pathological processes in cardiovascular system homeostasis. The arterial tortuosity syndrome (ATS) is a rare, autosomal recessive connective tissue disorder showing lengthening, tortuosity, and stenosis of the large arteries, with a propensity for aneurysm formation. In histopathology, it associates with fragmentation and disorganization of elastic fibers in several tissues, including the arterial wall. ATS is caused by pathogenic variants in SLC2A10 encoding the facilitative glucose transporter (GLUT)10. Critical Issues: Although several hypotheses have been forwarded, the molecular mechanisms linking disrupted GLUT10 activity with arterial malformations are largely unknown. Recent Advances: The vascular and systemic manifestations and natural history of ATS patients have been largely delineated. GLUT10 was identified as an intracellular transporter of dehydroascorbic acid, which contributes to collagen and elastin cross-linking in the endoplasmic reticulum, redox homeostasis in the mitochondria, and global and gene-specific methylation/hydroxymethylation affecting epigenetic regulation in the nucleus. We revise here the current knowledge on ATS and the role of GLUT10 within the compartmentalization of ascorbate in physiological and diseased states. Future Directions: Centralization of clinical, treatment, and outcome data will enable better management for ATS patients. Establishment of representative animal disease models could facilitate the study of pathomechanisms underlying ATS. This might be relevant for other forms of vascular dysplasia, such as isolated aneurysm formation, hypertensive vasculopathy, and neovascularization. Antioxid. Redox Signal. 34, 875-889.
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Affiliation(s)
- Annekatrien Boel
- Department of Biomolecular Medicine, Center for Medical Genetics Ghent, Ghent University, Ghent, Belgium
| | - Krisztina Veszelyi
- Institute of Clinical Experimental Research, Molecular Biology, and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | - Csilla E Németh
- Department of Medical Chemistry, Molecular Biology, and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | - Aude Beyens
- Department of Biomolecular Medicine, Center for Medical Genetics Ghent, Ghent University, Ghent, Belgium
| | - Andy Willaert
- Department of Biomolecular Medicine, Center for Medical Genetics Ghent, Ghent University, Ghent, Belgium
| | - Paul Coucke
- Department of Biomolecular Medicine, Center for Medical Genetics Ghent, Ghent University, Ghent, Belgium
| | - Bert Callewaert
- Department of Biomolecular Medicine, Center for Medical Genetics Ghent, Ghent University, Ghent, Belgium
| | - Éva Margittai
- Institute of Clinical Experimental Research, Molecular Biology, and Pathobiochemistry, Semmelweis University, Budapest, Hungary
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11
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Verlee M, Beyens A, Gezdirici A, Gulec EY, Pottie L, De Feyter S, Vanhooydonck M, Tapaneeyaphan P, Symoens S, Callewaert B. Loss-of-Function Variants in EFEMP1 Cause a Recognizable Connective Tissue Disorder Characterized by Cutis Laxa and Multiple Herniations. Genes (Basel) 2021; 12:genes12040510. [PMID: 33807164 PMCID: PMC8066907 DOI: 10.3390/genes12040510] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/27/2021] [Accepted: 03/29/2021] [Indexed: 11/16/2022] Open
Abstract
Hereditary disorders of connective tissue (HDCT) compromise a heterogeneous group of diseases caused by pathogenic variants in genes encoding different components of the extracellular matrix and characterized by pleiotropic manifestations, mainly affecting the cutaneous, cardiovascular, and musculoskeletal systems. We report the case of a 9-year-old boy with a discernible connective tissue disorder characterized by cutis laxa (CL) and multiple herniations and caused by biallelic loss-of-function variants in EFEMP1. Hence, we identified EFEMP1 as a novel disease-causing gene in the CL spectrum, differentiating it from other HDCT.
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Affiliation(s)
- Maxim Verlee
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (M.V.); (A.B.); (L.P.); (S.D.F.); (M.V.); (P.T.); (S.S.)
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Aude Beyens
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (M.V.); (A.B.); (L.P.); (S.D.F.); (M.V.); (P.T.); (S.S.)
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
- Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Alper Gezdirici
- Department of Medical Genetics, Basaksehir Cam and Sakura City Hospital, 34480 Istanbul, Turkey;
| | - Elif Yilmaz Gulec
- Department of Medical Genetics, Kanuni Sultan Suleyman Training and Research Hospital, Health Sciences University, 34303 Istanbul, Turkey;
| | - Lore Pottie
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (M.V.); (A.B.); (L.P.); (S.D.F.); (M.V.); (P.T.); (S.S.)
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Silke De Feyter
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (M.V.); (A.B.); (L.P.); (S.D.F.); (M.V.); (P.T.); (S.S.)
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Michiel Vanhooydonck
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (M.V.); (A.B.); (L.P.); (S.D.F.); (M.V.); (P.T.); (S.S.)
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Piyanoot Tapaneeyaphan
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (M.V.); (A.B.); (L.P.); (S.D.F.); (M.V.); (P.T.); (S.S.)
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Sofie Symoens
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (M.V.); (A.B.); (L.P.); (S.D.F.); (M.V.); (P.T.); (S.S.)
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
| | - Bert Callewaert
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium; (M.V.); (A.B.); (L.P.); (S.D.F.); (M.V.); (P.T.); (S.S.)
- Department of Biomolecular Medicine, Ghent University, 9000 Ghent, Belgium
- Correspondence:
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12
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Beyens A, Boel A, Symoens S, Callewaert B. Cutis laxa: A comprehensive overview of clinical characteristics and pathophysiology. Clin Genet 2020; 99:53-66. [PMID: 33058140 DOI: 10.1111/cge.13865] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/17/2020] [Accepted: 10/07/2020] [Indexed: 12/20/2022]
Abstract
Cutis laxa (CL) syndromes comprise a rare group of multisystem disorders that share loose redundant skin folds as hallmark clinical feature. CL results from impaired elastic fiber assembly and homeostasis, and the known underlying gene defects affect different extracellular matrix proteins, intracellular trafficking, or cellular metabolism. Due to the underlying clinical and molecular heterogeneity, the diagnostic work-up of CL patients is often challenging. In this review, we provide a practical approach to the broad differential diagnosis of CL syndromes, provide an overview of the molecular pathogenesis of the different subtypes, and suggest general management guidelines.
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Affiliation(s)
- Aude Beyens
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Dermatology, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Annekatrien Boel
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Sofie Symoens
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Bert Callewaert
- Center for Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
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13
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Karoulias SZ, Beyens A, Balic Z, Symoens S, Vandersteen A, Rideout AL, Dickinson J, Callewaert B, Hubmacher D. A novel ADAMTS17 variant that causes Weill-Marchesani syndrome 4 alters fibrillin-1 and collagen type I deposition in the extracellular matrix. Matrix Biol 2019; 88:1-18. [PMID: 31726086 DOI: 10.1016/j.matbio.2019.11.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/31/2019] [Accepted: 11/02/2019] [Indexed: 12/17/2022]
Abstract
Weill-Marchesani syndrome (WMS) is a rare genetic disorder that affects the musculoskeletal system, the eye, and the cardiovascular system. Individuals with WMS present with short stature, joint contractures, thick skin, microspherophakia, small and dislocated lenses, and cardiac valve anomalies. WMS can be caused by recessive mutations in ADAMTS10 (WMS 1), ADAMTS17 (WMS 4), or LTBP2 (WMS 3), or by dominant mutations in fibrillin-1 (FBN1) (WMS 2); all genes encode secreted extracellular matrix (ECM) proteins. Individuals with WMS 4 due to ADAMTS17 mutations appear to have less severe cardiac involvement and present predominantly with the musculoskeletal and ocular features of WMS. ADAMTS17 is a member of the ADAMTS family of secreted proteases and directly binds to fibrillins. Here we report a novel pathogenic variant in ADAMTS17 that causes WMS 4 in an individual with short stature, brachydactyly, and small, spherical, and dislocated lenses. We provide biochemical and cell biological insights in the pathomechanisms of WMS 4, which also suggest potential biological functions for ADAMTS17. We show that the variant in ADAMTS17 prevents its secretion and we found intracellular accumulation of fibrillin-1 and collagen type I in patient-derived skin fibroblasts. In accordance, transmission electron microscopy revealed elastic fiber abnormalities, decreased collagen fibril diameters, and intracellular collagen accumulation in the dermis of the proband. Together, the data indicate a possible role for ADAMTS17 in the secretion of fibrillin-1 and collagen type I or in their early assembly in the pericellular matrix or the ECM.
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Affiliation(s)
- Stylianos Z Karoulias
- Orthopaedic Research Laboratories, Leni & Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mt. Sinai, New York, NY, USA
| | - Aude Beyens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Belgium; Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - Zerina Balic
- Orthopaedic Research Laboratories, Leni & Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mt. Sinai, New York, NY, USA
| | - Sofie Symoens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Belgium
| | - Anthony Vandersteen
- Division of Medical Genetics, Department of Pediatrics, Dalhousie University, Halifax, NS, Canada; Maritime Medical Genetics Service, IWK Health Centre, Halifax, NS, Canada
| | - Andrea L Rideout
- Maritime Medical Genetics Service, IWK Health Centre, Halifax, NS, Canada
| | - John Dickinson
- Department of Ophthalmology & Visual Sciences, Dalhousie University, Halifax, NS, Canada
| | - Bert Callewaert
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium; Department of Biomolecular Medicine, Ghent University, Belgium.
| | - Dirk Hubmacher
- Orthopaedic Research Laboratories, Leni & Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mt. Sinai, New York, NY, USA.
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14
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Meerschaut I, Beyens A, Steyaert W, De Rycke R, Bonte K, De Backer T, Janssens S, Panzer J, Plasschaert F, De Wolf D, Callewaert B. Myhre syndrome: A first familial recurrence and broadening of the phenotypic spectrum. Am J Med Genet A 2019; 179:2494-2499. [PMID: 31595668 DOI: 10.1002/ajmg.a.61377] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 09/10/2019] [Accepted: 09/13/2019] [Indexed: 01/12/2023]
Abstract
Myhre syndrome is a rare multisystem connective tissue disorder, characterized by short stature, facial dysmorphology, variable intellectual disability, skeletal abnormalities, arthropathy, cardiopathy, laryngotracheal anomalies, and stiff skin. So far, all molecularly confirmed cases harbored a de novo heterozygous gain-of-function mutation in SMAD4, encoding the SMAD4 transducer protein required for both transforming growth factor-beta and bone morphogenic proteins signaling. We report on four novel patients (one female proband and her two affected children, and one male proband) with Myhre syndrome harboring the recurrent c.1486C>T (p.Arg496Cys) mutation in SMAD4. The female proband presented with a congenital heart defect, vertebral anomalies, and facial dysmorphic features. She developed severe tracheal stenosis requiring a total laryngectomy. With assisted reproductive treatment, she gave birth to two affected children. The second proband presented with visual impairment following lensectomy in childhood, short stature, brachydactyly, stiff skin, and decreased peripheral sensitivity. Transmission electron microscopy (TEM) of the dermis shows irregular elastin cores with globular deposits and almost absent surrounding microfibrils and suggests age-related increased collagen deposition. We report on the first familial case of Myhre syndrome and illustrate the variable clinical spectrum of the disorder. Despite the primarily fibrotic nature of the disease, TEM analysis mainly indicates elastic fiber anomalies.
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Affiliation(s)
- Ilse Meerschaut
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.,Department of Pediatrics, Ghent University Hospital, Ghent, Belgium
| | - Aude Beyens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.,Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - Wouter Steyaert
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Riet De Rycke
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.,VIB Center for Inflammation Research, Ghent, Belgium.,Ghent University Expertise Centre for Transmission Electron Microscopy and VIB Bioimaging Core, Ghent, Belgium
| | - Katrien Bonte
- Department of Head, Neck and Maxillofacial Surgery, Ghent University Hospital, Ghent, Belgium
| | - Tine De Backer
- Department of Cardiology, Ghent University Hospital, Ghent, Belgium
| | - Sandra Janssens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Joseph Panzer
- Department of Pediatric Cardiology, Ghent University Hospital, Ghent, Belgium
| | - Frank Plasschaert
- Department of Orthopedic Surgery, Ghent University Hospital, Ghent, Belgium
| | - Daniël De Wolf
- Department of Pediatric Cardiology, Ghent University Hospital, Ghent, Belgium
| | - Bert Callewaert
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
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15
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Beyens A, Van Meensel K, Pottie L, De Rycke R, De Bruyne M, Baeke F, Hoebeke P, Plasschaert F, Loeys B, De Schepper S, Symoens S, Callewaert B. Defining the Clinical, Molecular and Ultrastructural Characteristics in Occipital Horn Syndrome: Two New Cases and Review of the Literature. Genes (Basel) 2019; 10:genes10070528. [PMID: 31336972 PMCID: PMC6678539 DOI: 10.3390/genes10070528] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 06/28/2019] [Revised: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 12/15/2022] Open
Abstract
Occipital horn syndrome (OHS) is a rare connective tissue disorder caused by pathogenic variants in ATP7A, encoding a copper transporter. The main clinical features, including cutis laxa, bony exostoses, and bladder diverticula are attributed to a decreased activity of lysyl oxidase (LOX), a cupro-enzyme involved in collagen crosslinking. The absence of large case series and natural history studies precludes efficient diagnosis and management of OHS patients. This study describes the clinical and molecular characteristics of two new patients and 32 patients previously reported in the literature. We report on the need for long-term specialized care and follow-up, in which MR angiography, echocardiography and spirometry should be incorporated into standard follow-up guidelines for OHS patients, next to neurodevelopmental, orthopedic and urological follow-up. Furthermore, we report on ultrastructural abnormalities including increased collagen diameter, mild elastic fiber abnormalities and multiple autophagolysosomes reflecting the role of lysyl oxidase and defective ATP7A trafficking as pathomechanisms of OHS.
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Affiliation(s)
- Aude Beyens
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium
- Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Kyaran Van Meensel
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium
| | - Lore Pottie
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium
| | - Riet De Rycke
- Department for Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
- VIB Center for Inflammation Research, 9000 Ghent, Belgium
- Ghent University Expertise Centre for Transmission Electron Microscopy and VIB BioImaging Core, 9000 Ghent, Belgium
| | - Michiel De Bruyne
- Department for Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
- VIB Center for Inflammation Research, 9000 Ghent, Belgium
- Ghent University Expertise Centre for Transmission Electron Microscopy and VIB BioImaging Core, 9000 Ghent, Belgium
| | - Femke Baeke
- Department for Biomedical Molecular Biology, Ghent University, 9000 Ghent, Belgium
- VIB Center for Inflammation Research, 9000 Ghent, Belgium
- Ghent University Expertise Centre for Transmission Electron Microscopy and VIB BioImaging Core, 9000 Ghent, Belgium
| | - Piet Hoebeke
- Department of Urology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Frank Plasschaert
- Department of Orthopedic Surgery, Ghent University Hospital, 9000 Ghent, Belgium
| | - Bart Loeys
- Center for Medical Genetics, University of Antwerp/Antwerp University Hospital, Antwerp, Belgium
| | - Sofie De Schepper
- Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium
| | - Sofie Symoens
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium
| | - Bert Callewaert
- Center for Medical Genetics Ghent, Ghent University Hospital, 9000 Ghent, Belgium.
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16
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Beyens A, Albuisson J, Boel A, Al-Essa M, Al-Manea W, Bonnet D, Bostan O, Boute O, Busa T, Canham N, Cil E, Coucke PJ, Cousin MA, Dasouki M, De Backer J, De Paepe A, De Schepper S, De Silva D, Devriendt K, De Wandele I, Deyle DR, Dietz H, Dupuis-Girod S, Fontenot E, Fischer-Zirnsak B, Gezdirici A, Ghoumid J, Giuliano F, Baena N, Haider MZ, Hardin JS, Jeunemaitre X, Klee EW, Kornak U, Landecho MF, Legrand A, Loeys B, Lyonnet S, Michael H, Moceri P, Mohammed S, Muiño-Mosquera L, Nampoothiri S, Pichler K, Prescott K, Rajeb A, Ramos-Arroyo M, Rossi M, Salih M, Seidahmed MZ, Schaefer E, Steichen-Gersdorf E, Temel S, Uysal F, Vanhomwegen M, Van Laer L, Van Maldergem L, Warner D, Willaert A, Collins Ii TR, Taylor A, Davis EC, Zarate Y, Callewaert B. Correction: Arterial tortuosity syndrome: 40 new families and literature review. Genet Med 2018; 21:1894-1895. [PMID: 30201961 DOI: 10.1038/s41436-018-0035-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
In the published version of this paper the author Neus Baena's name was incorrectly given as Neus Baena Diez. This has now been corrected in both the HTML and PDF versions of the paper.
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Affiliation(s)
- Aude Beyens
- Center For Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium
| | - Juliette Albuisson
- APH, Hôpital Européen Georges Pompidou, Centre de Référence des Maladies Vasculaires Rares, INSERM, U970, Université Descartes Paris, Sarbonne Cité, Paris, France
| | - Annekatrien Boel
- Center For Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium
| | - Mazen Al-Essa
- Pediatrics Department, Kuwait University, Kuwait City, Kuwait
| | - Waheed Al-Manea
- Pediatric Department, Security Forces Hospital, Riyadh, Saudi Arabia
| | - Damien Bonnet
- Medical Genetics Service, Hôpital Necker-Enfants Malades, Paris, France
| | - Ozlem Bostan
- Department of Pediatric Cardiology, University of Uludag, Bursa, Turkey
| | - Odile Boute
- Clinical Genetics Service "Guy Fontaine," Hôpital Calmette, Lille, France
| | - Tiffany Busa
- Service de Génétique Clinique, Département de Génétique, AP-HM CHU Timone Enfants, Marseille, France
| | - Nathalie Canham
- North West Thames Regional Genetics Service, Northwick Park Hospital, Harrow, United Kingdom
| | - Ergun Cil
- Department of Pediatric Cardiology, University of Uludag, Bursa, Turkey
| | - Paul J Coucke
- Center For Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium
| | - Margot A Cousin
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA.,Center for Individualized Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Majed Dasouki
- Department of Pediatrics, University of Kansas, Kansas City, Kansas, USA
| | - Julie De Backer
- Center For Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.,Department of Cardiology, Ghent University Hospital, Ghent, Belgium
| | - Anne De Paepe
- Center For Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium
| | - Sofie De Schepper
- Department of Dermatology, Ghent University Hospital, Ghent, Belgium
| | - Deepthi De Silva
- Department of Physiology, University of Kelaniya, Ragama, Sri Lanka.,Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka
| | | | - Inge De Wandele
- Center For Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium
| | - David R Deyle
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA.,Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA.,Department of Molecular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Harry Dietz
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sophie Dupuis-Girod
- Hospices Civils de Lyon, Hôpital Femme-Mère-Enfants, Service de Génétique et Centre de Référence Pour la Maladie de Rendu-Osler, Université Lyon, Lyon, France
| | - Eudice Fontenot
- Division of Cardiology, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Björn Fischer-Zirnsak
- Institute of Medical and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Alper Gezdirici
- Department of Medical Genetics, Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Jamal Ghoumid
- Department of Medical Genetics, Lille University Hospital, CHU Lille, Lille, France
| | - Fabienne Giuliano
- Department of Physical Medicine and Rehabilitation, Raymond Poincare Hospital, Garches, France
| | - Neus Baena
- Genetics Laboratory UDIAT Diagnostic Center, Parc Tauli University Hospital, Sabadell, Spain
| | | | - Joshua S Hardin
- Department of Ophthalmology, Arkansas Children's Hospital, Little Rock, Arkansas, USA
| | - Xavier Jeunemaitre
- APH, Hôpital Européen Georges Pompidou, Centre de Référence des Maladies Vasculaires Rares, INSERM, U970, Université Descartes Paris, Sarbonne Cité, Paris, France
| | - Eric W Klee
- Service de Génétique Clinique, Département de Génétique, AP-HM CHU Timone Enfants, Marseille, France.,North West Thames Regional Genetics Service, Northwick Park Hospital, Harrow, United Kingdom.,Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA
| | - Uwe Kornak
- Institute of Medical and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Manuel F Landecho
- Department of Internal Medicine, Clínica Universidad de Navarra, Pamplona, Spain
| | - Anne Legrand
- APH, Hôpital Européen Georges Pompidou, Centre de Référence des Maladies Vasculaires Rares, INSERM, U970, Université Descartes Paris, Sarbonne Cité, Paris, France
| | - Bart Loeys
- Center of Medical Genetics, University Hospital of Antwerp, Antwerp, Belgium
| | - Stanislas Lyonnet
- Medical Genetics Service, Hôpital Necker-Enfants Malades, Paris, France
| | - Helen Michael
- Paediatric Cardiology and Transition, Leeds General Infirmary, Leeds, United Kingdom
| | - Pamela Moceri
- Cardiology Department, Université Côte d'Azur, CHU de Nice et Hôpitaux Universitaires Pédiatriques Lenval, Nice, France
| | - Shehla Mohammed
- South East Thames Regional Genetics Service, Guy's Hospital, London, United Kingdom
| | | | - Sheela Nampoothiri
- Department of Pediatric Genetics, Amrita Institute of Medical Sciences and Research Center, Cochin, Kerala, India
| | - Karin Pichler
- Clinic for Pediatrics I, Medical University of Innsbruck, Innsbruck, Austria
| | - Katrina Prescott
- Clinical Genetics, Yorkshire Regional Genetics Service, Leeds, United Kingdom
| | - Anna Rajeb
- Institute of Medical and Human Genetics, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Maria Ramos-Arroyo
- Medical Genetics Service, Complejo Hospitalario de Navarra, Pamplona, Spain
| | - Massimiliano Rossi
- Genetic Department, Femme-Mère-Enfant Hospital, Hospices Civils de Lyon and INSERM U1028, CNRS UMR5292, Centre de Recherche en Neurosciences de Lyon, GENDEV Team, Université Claude Bernard Lyon 1, Bron, France
| | - Mustafa Salih
- Division of Pediatric Neurology, King Saud University, Riyadh, Saudi Arabia
| | | | - Elise Schaefer
- Medical Genetics Service, CHU Strasbourg, Strasbourg, France
| | | | - Sehime Temel
- Department of Histology and Embryology, Faculty of Medicine, Near East University, Lefkoşa, Cyprus.,Department of Histology and Embryology, Faculty of Medicine, University of Uludag, Bursa, Turkey.,Department of Medical Genetics, Faculty of Medicine, University of Uludag, Bursa, Turkey
| | - Fahrettin Uysal
- Department of Pediatric Cardiology, University of Uludag, Bursa, Turkey
| | - Marine Vanhomwegen
- Center For Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium
| | - Lut Van Laer
- Center of Medical Genetics, University Hospital of Antwerp, Antwerp, Belgium
| | | | - David Warner
- Department of Ophthalmology, Arkansas Children's Hospital, Little Rock, Arkansas, USA
| | - Andy Willaert
- Center For Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium
| | - Tom R Collins Ii
- Division of Cardiology, Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | | | - Elaine C Davis
- Department of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada
| | - Yuri Zarate
- Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota, USA
| | - Bert Callewaert
- Center For Medical Genetics Ghent, Ghent University Hospital, Ghent, Belgium.
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17
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Beyens A, Moreno-Artero E, Bodemer C, Cox H, Gezdirici A, Yilmaz Gulec E, Kahloul N, Khau Van Kien P, Ogur G, Harroche A, Vasse M, Salhi A, Symoens S, Hadj-Rabia S, Callewaert B. ATP6V0A2-related cutis laxa in 10 novel patients: Focus on clinical variability and expansion of the phenotype. Exp Dermatol 2018; 28:1142-1145. [PMID: 29952037 DOI: 10.1111/exd.13723] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/22/2018] [Indexed: 01/11/2023]
Abstract
In ATP6V0A2-related cutis laxa, the skin phenotype varies from a wrinkly skin to prominent cutis laxa and typically associates with skeletal and neurological manifestations. The phenotype remains incompletely characterized, especially in adult patients. Glycosylation defects and reduced acidification of secretory vesicles contribute to the pathogenesis, but the consequences at the clinical level remain to be determined. Moreover, the morphology of the elastic fibres has not been studied in ATP6V0A2-related cutis laxa, nor its relation with potential clinical risks. We report on the extreme variability in ATP6V0A2-related cutis laxa in 10 novel patients, expand the phenotype with emphysema and von Willebrand disease and hypothesize on the pathogenesis that might link both with deficiency of glycosylation and with elastic fibre anomalies. Our data will affect clinical management of patients with ATP6V0A2-related cutis laxa.
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Affiliation(s)
- Aude Beyens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Ester Moreno-Artero
- Reference Centre for Genodermatoses and Rare Skin Diseases (MAGEC) & Department of Dermatology, Department of Paediatric Social Work, INSERM U1163 & Institut Imagine, Hôpital Universitaire Necker-Enfants Malades, APHP, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
| | - Christine Bodemer
- Reference Centre for Genodermatoses and Rare Skin Diseases (MAGEC) & Department of Dermatology, Department of Paediatric Social Work, INSERM U1163 & Institut Imagine, Hôpital Universitaire Necker-Enfants Malades, APHP, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
| | - Helen Cox
- West Midlands Regional Clinical Genetics Service, Clinical Genetics Unit, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Alper Gezdirici
- Department of Medical Genetics, Kanuni Sultan Suleyman Training and Research Hospital, Health Sciences University, Istanbul, Turkey
| | - Elif Yilmaz Gulec
- Department of Medical Genetics, Kanuni Sultan Suleyman Training and Research Hospital, Health Sciences University, Istanbul, Turkey
| | - Najoua Kahloul
- Center for Pediatrics, CHU Farhat Hached De Sousse, Sousse, Tunisia
| | - Philippe Khau Van Kien
- Department of Medical Genetics, Centre Hospitalier Régional Universitaire de Nîmes, Nîmes, France
| | - Gonul Ogur
- Department of Pediatric Genetics, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey
| | - Annie Harroche
- Service d'Hématologie Clinique, Centre de Traitement de l'Hémophilie, Hôpital Universitaire Necker-Enfants Malades, Paris, France
| | - Marc Vasse
- Department of Clinical Biology & INSERM UMR-S1176, Foch Hospital, Suresnes, Le Kremlin-Bicêtre, France
| | - Aïcha Salhi
- Service de Dermatologie, Faculté de Médecine d'Alger, Université d'Alger, Alger, Algeria
| | - Sofie Symoens
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Smail Hadj-Rabia
- Reference Centre for Genodermatoses and Rare Skin Diseases (MAGEC) & Department of Dermatology, Department of Paediatric Social Work, INSERM U1163 & Institut Imagine, Hôpital Universitaire Necker-Enfants Malades, APHP, Université Paris Descartes - Sorbonne Paris Cité, Paris, France
| | - Bert Callewaert
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
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