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Tábara LC, Al-Salmi F, Maroofian R, Al-Futaisi AM, Al-Murshedi F, Kennedy J, Day JO, Courtin T, Al-Khayat A, Galedari H, Mazaheri N, Protasoni M, Johnson M, Leslie JS, Salter CG, Rawlins LE, Fasham J, Al-Maawali A, Voutsina N, Charles P, Harrold L, Keren B, Kunji ERS, Vona B, Jelodar G, Sedaghat A, Shariati G, Houlden H, Crosby AH, Prudent J, Baple EL. TMEM63C mutations cause mitochondrial morphology defects and underlie hereditary spastic paraplegia. Brain 2022; 145:3095-3107. [PMID: 35718349 PMCID: PMC9473353 DOI: 10.1093/brain/awac123] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [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: 07/07/2021] [Revised: 02/10/2022] [Accepted: 03/13/2022] [Indexed: 02/02/2023] Open
Abstract
The hereditary spastic paraplegias (HSP) are among the most genetically diverse of all Mendelian disorders. They comprise a large group of neurodegenerative diseases that may be divided into 'pure HSP' in forms of the disease primarily entailing progressive lower-limb weakness and spasticity, and 'complex HSP' when these features are accompanied by other neurological (or non-neurological) clinical signs. Here, we identified biallelic variants in the transmembrane protein 63C (TMEM63C) gene, encoding a predicted osmosensitive calcium-permeable cation channel, in individuals with hereditary spastic paraplegias associated with mild intellectual disability in some, but not all cases. Biochemical and microscopy analyses revealed that TMEM63C is an endoplasmic reticulum-localized protein, which is particularly enriched at mitochondria-endoplasmic reticulum contact sites. Functional in cellula studies indicate a role for TMEM63C in regulating both endoplasmic reticulum and mitochondrial morphologies. Together, these findings identify autosomal recessive TMEM63C variants as a cause of pure and complex HSP and add to the growing evidence of a fundamental pathomolecular role of perturbed mitochondrial-endoplasmic reticulum dynamics in motor neurone degenerative diseases.
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Affiliation(s)
- Luis Carlos Tábara
- Medical Research Council Mitochondrial Biology Unit, University of
Cambridge, Cambridge CB2 0XY, UK
| | - Fatema Al-Salmi
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
| | - Reza Maroofian
- UCL Queen Square Institute of Neurology, University College
London, London WC1E 6BT, UK
| | - Amna Mohammed Al-Futaisi
- Genetic and Developmental Medicine Clinic, Department of Genetics, College
of Medicine and Health Sciences, Sultan Qaboos University Hospital,
Muscat 123, Oman
| | - Fathiya Al-Murshedi
- Genetic and Developmental Medicine Clinic, Department of Genetics, College
of Medicine and Health Sciences, Sultan Qaboos University Hospital,
Muscat 123, Oman
| | - Joanna Kennedy
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
- Clinical Genetics, University Hospitals Bristol,
Bristol BS2 8EG, UK
| | - Jacob O Day
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
- Faculty of Health, University of Plymouth,
Plymouth PL4 8AA, UK
| | - Thomas Courtin
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance
Publique-Hôpitaux de Paris, 75019 Paris, Sorbonne
Université, France
| | - Aisha Al-Khayat
- Department of Biology, College of Science, Sultan Qaboos
University, Muscat, Oman
| | - Hamid Galedari
- Department of Genetics, Faculty of Science, Shahid Chamran University of
Ahvaz, Ahvaz, Iran
| | - Neda Mazaheri
- Department of Genetics, Faculty of Science, Shahid Chamran University of
Ahvaz, Ahvaz, Iran
| | - Margherita Protasoni
- Medical Research Council Mitochondrial Biology Unit, University of
Cambridge, Cambridge CB2 0XY, UK
| | - Mark Johnson
- Medical Research Council Mitochondrial Biology Unit, University of
Cambridge, Cambridge CB2 0XY, UK
| | - Joseph S Leslie
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
| | - Claire G Salter
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
| | - Lettie E Rawlins
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
- Peninsula Clinical Genetics Service, Royal Devon and Exeter Hospital
(Heavitree), Exeter EX1 2ED, UK
| | - James Fasham
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
- Peninsula Clinical Genetics Service, Royal Devon and Exeter Hospital
(Heavitree), Exeter EX1 2ED, UK
| | - Almundher Al-Maawali
- Genetic and Developmental Medicine Clinic, Department of Genetics, College
of Medicine and Health Sciences, Sultan Qaboos University Hospital,
Muscat 123, Oman
| | - Nikol Voutsina
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
| | - Perrine Charles
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance
Publique-Hôpitaux de Paris, 75019 Paris, Sorbonne
Université, France
| | - Laura Harrold
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
| | - Boris Keren
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance
Publique-Hôpitaux de Paris, 75019 Paris, Sorbonne
Université, France
| | - Edmund R S Kunji
- Medical Research Council Mitochondrial Biology Unit, University of
Cambridge, Cambridge CB2 0XY, UK
| | - Barbara Vona
- Department of Otolaryngology-Head and Neck Surgery, Tübingen Hearing
Research Centre, Eberhard Karls University Tübingen,
Tübingen, Germany
| | - Gholamreza Jelodar
- Pediatric Neurology, Ahvaz Jundishapur University of Medical
Sciences, Ahvaz, Iran
| | - Alireza Sedaghat
- Health Research Institute, Diabetes Research Center, Ahvaz Jundishapur
University of Medical Sciences, Ahvaz, Iran
| | - Gholamreza Shariati
- Department of Medical Genetic, Faculty of Medicine, Ahvaz Jundishapur,
University of Medical Sciences, Ahvaz, Iran
| | - Henry Houlden
- UCL Queen Square Institute of Neurology, University College
London, London WC1E 6BT, UK
| | - Andrew H Crosby
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
| | - Julien Prudent
- Medical Research Council Mitochondrial Biology Unit, University of
Cambridge, Cambridge CB2 0XY, UK
| | - Emma L Baple
- Level 4, RILD Wellcome Wolfson Medical Research Centre, RD&E (Wonford)
NHS Foundation Trust, University of Exeter Medical School,
Exeter EX2 5DW, UK
- Peninsula Clinical Genetics Service, Royal Devon and Exeter Hospital
(Heavitree), Exeter EX1 2ED, UK
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2
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Salter CG, Cai Y, Lo B, Helman G, Taylor H, McCartney A, Leslie JS, Accogoli A, Zara F, Traverso M, Fasham J, Lees JA, Ferla M, Chioza BA, Wenger O, Scott E, Cross HE, Crawford J, Warshawsky I, Keisling M, Agamanolis D, Melver CW, Cox H, Elawad M, Marton T, Wakeling M, Holzinger D, Tippelt S, Munteanu M, Valcheva D, Deal C, Van Meerbeke S, Vockley CW, Butte MJ, Acar U, van der Knaap MS, Korenke GC, Kotzaeridou U, Balla T, Simons C, Uhlig HH, Crosby AH, De Camilli P, Wolf NI, Baple EL. Biallelic PI4KA variants cause neurological, intestinal and immunological disease. Brain 2021; 144:3597-3610. [PMID: 34415310 PMCID: PMC8719846 DOI: 10.1093/brain/awab313] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 07/14/2021] [Accepted: 08/01/2021] [Indexed: 11/22/2022] Open
Abstract
Phosphatidylinositol 4-kinase IIIα (PI4KIIIα/PI4KA/OMIM:600286) is a lipid kinase generating phosphatidylinositol 4-phosphate (PI4P), a membrane phospholipid with critical roles in the physiology of multiple cell types. PI4KIIIα’s role in PI4P generation requires its assembly into a heterotetrameric complex with EFR3, TTC7 and FAM126. Sequence alterations in two of these molecular partners, TTC7 (encoded by TTC7A or TCC7B) and FAM126, have been associated with a heterogeneous group of either neurological (FAM126A) or intestinal and immunological (TTC7A) conditions. Here we show that biallelic PI4KA sequence alterations in humans are associated with neurological disease, in particular hypomyelinating leukodystrophy. In addition, affected individuals may present with inflammatory bowel disease, multiple intestinal atresia and combined immunodeficiency. Our cellular, biochemical and structural modelling studies indicate that PI4KA-associated phenotypical outcomes probably stem from impairment of PI4KIIIα-TTC7-FAM126's organ-specific functions, due to defective catalytic activity or altered intra-complex functional interactions. Together, these data define PI4KA gene alteration as a cause of a variable phenotypical spectrum and provide fundamental new insight into the combinatorial biology of the PI4KIIIα-FAM126-TTC7-EFR3 molecular complex.
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Affiliation(s)
- Claire G Salter
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, UK.,Wessex Clinical Genetics Service, Princess Anne Hospital, Southampton, UK
| | - Yiying Cai
- Department of Neuroscience, Yale University School of Medicine, New Haven, CT, USA.,Department of Cell Biology, Yale University School of Medicine, New Haven, CT, USA.,Program in Cellular Neuroscience Neurodegeneration and Repair, Yale University School of Medicine, New Haven, CT, USA.,Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT, USA
| | - Bernice Lo
- Research Branch, Sidra Medicine, Doha, Qatar.,College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Guy Helman
- Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Melbourne, Australia.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Henry Taylor
- Department of surgery and Cancer, Imperial College London, London, UK
| | - Amber McCartney
- Department of Neuroscience, Yale University School of Medicine, New Haven, CT, USA.,Department of Cell Biology, Yale University School of Medicine, New Haven, CT, USA.,Program in Cellular Neuroscience Neurodegeneration and Repair, Yale University School of Medicine, New Haven, CT, USA.,Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT, USA
| | - Joseph S Leslie
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, UK
| | | | | | | | - James Fasham
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, UK.,Peninsula Clinical Genetics Service, Royal Devon and Exeter Hospital, Exeter, UK
| | - Joshua A Lees
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT, USA
| | - Matteo Ferla
- Wellcome Centre Human Genetics, University of Oxford, Oxford, UK
| | - Barry A Chioza
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, UK
| | | | | | - Harold E Cross
- Department of Ophthalmology, University of Arizona College of Medicine, Tucson, AZ, USA
| | - Joanna Crawford
- Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Melbourne, Australia
| | | | | | | | | | - Helen Cox
- West Midlands Clinical Genetics Service, Birmingham Women's Hospital, Birmingham, UK
| | - Mamoun Elawad
- Department of Gastroenterology, Sidra Medicine, Doha, Qatar
| | - Tamas Marton
- West Midlands Perinatal Pathology, Birmingham Women's Hospital, Edgbaston, Birmingham, UK
| | - Matthew Wakeling
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, UK
| | - Dirk Holzinger
- Department of Pediatric Haematology-Oncology, University of Duisburg-Essen, Essen, Germany
| | - Stephan Tippelt
- Department of Pediatric Haematology-Oncology, University of Duisburg-Essen, Essen, Germany
| | - Martin Munteanu
- Institute for Human Genetics, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | | | - Christin Deal
- Children's Hospital of Pittsburgh, UPMC, Division of Pediatric Allergy and Immunology, Pittsburgh, USA
| | - Sara Van Meerbeke
- Children's Hospital of Pittsburgh, UPMC, Division of Pediatric Allergy and Immunology, Pittsburgh, USA
| | - Catherine Walsh Vockley
- Children's Hospital of Pittsburgh, UPMC, Division of Genetic and Genomic Medicine, Pittsburgh, USA
| | - Manish J Butte
- Department of Paediatrics, Division of Immunology, Allergy, and Rheumatology, UCLA, Los Angeles, CA, USA
| | - Utkucan Acar
- Department of Paediatrics, Division of Immunology, Allergy, and Rheumatology, UCLA, Los Angeles, CA, USA
| | - Marjo S van der Knaap
- Amsterdam Leukodystrophy Center, Department of Child Neurology, Emma Children's Hospital, Amsterdam University Medical Center, VU University Amsterdam and Amsterdam Neuroscience, 1081 HV Amsterdam, The Netherlands.,Department of Functional Genomics, Centre for Neurogenomics and Cognitive Research, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - G Christoph Korenke
- Department of Neuropediatrics, University Children's Hospital, Klinikum Oldenburg, 26133 Oldenburg, Germany
| | - Urania Kotzaeridou
- Department of Child Neurology and Metabolic Medicine, Center for Pediatric and Adolescent Medicine, University Hospital Heidelberg, D-69120 Heidelberg, Germany
| | - Tamas Balla
- Section on Molecular Signal Transduction, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Cas Simons
- Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Melbourne, Australia.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, Australia
| | - Holm H Uhlig
- Translational Gastroenterology Unit, NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, University of Oxford, Oxfordshire, UK.,Department of Paediatrics, University of Oxford, Oxfordshire, UK.,Oxford NIHR Biomedical Research Centre, Oxford, UK
| | - Andrew H Crosby
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, UK
| | - Pietro De Camilli
- Department of Neuroscience, Yale University School of Medicine, New Haven, CT, USA.,Department of Cell Biology, Yale University School of Medicine, New Haven, CT, USA.,Program in Cellular Neuroscience Neurodegeneration and Repair, Yale University School of Medicine, New Haven, CT, USA.,Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT, USA.,Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - Nicole I Wolf
- Amsterdam Leukodystrophy Center, Department of Child Neurology, Emma Children's Hospital, Amsterdam University Medical Center, VU University Amsterdam and Amsterdam Neuroscience, 1081 HV Amsterdam, The Netherlands.,Department of Functional Genomics, Centre for Neurogenomics and Cognitive Research, Vrije Universiteit Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Emma L Baple
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, UK.,Peninsula Clinical Genetics Service, Royal Devon and Exeter Hospital, Exeter, UK
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3
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Rickman OJ, Salter CG, Gunning AC, Fasham J, Voutsina N, Leslie JS, McGavin L, Cross HE, Posey JE, Akdemir ZC, Jhangiani SN, Lupski JR, Baple EL, Crosby AH. Dominant mitochondrial membrane protein-associated neurodegeneration (MPAN) variants cluster within a specific C19orf12 isoform. Parkinsonism Relat Disord 2020; 82:84-86. [PMID: 33260061 DOI: 10.1016/j.parkreldis.2020.10.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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] [Received: 05/26/2020] [Revised: 10/15/2020] [Accepted: 10/28/2020] [Indexed: 11/30/2022]
Abstract
Mitochondria membrane protein-associated neurodegeneration (MPAN) neurodegenerative disorder is typically associated with biallelic C19orf12 variants. Here we describe a new and review candidate previous monoallelic de novo C19orf12 variants to define loss of function mutations located in the putative non-membrane spanning C19orf12 isoform as the potential basis of monoallelic MPAN.
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Affiliation(s)
- Olivia J Rickman
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, EX2 5DW, UK
| | - Claire G Salter
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, EX2 5DW, UK; Wessex Clinical Genetics Service, Princess Anne Hospital, Southampton, SO16 5YA, UK
| | - Adam C Gunning
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, EX2 5DW, UK
| | - James Fasham
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, EX2 5DW, UK; Peninsula Clinical Genetics Service, Royal Devon and Exeter Hospital, Exeter, EX1 2ED, UK
| | - Nikol Voutsina
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, EX2 5DW, UK
| | - Joseph S Leslie
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, EX2 5DW, UK
| | - Lucy McGavin
- Department of Radiology, Derriford Hospital, Plymouth, UK
| | - Harold E Cross
- University of Arizona College of Medicine, Tucson, AZ, USA
| | - Jennifer E Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA, 77030
| | - Zeynep Coban Akdemir
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA, 77030
| | - Shalini N Jhangiani
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA, 77030
| | - James R Lupski
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA, 77030; Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA, 77030; Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA, 77030; Texas Children's Hospital, Houston, TX, USA, 77030
| | - Emma L Baple
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, EX2 5DW, UK; Peninsula Clinical Genetics Service, Royal Devon and Exeter Hospital, Exeter, EX1 2ED, UK.
| | - Andrew H Crosby
- RILD Wellcome Wolfson Centre, University of Exeter Medical School, Exeter, EX2 5DW, UK.
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4
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Zawerton A, Mignot C, Sigafoos A, Blackburn PR, Haseeb A, McWalter K, Ichikawa S, Nava C, Keren B, Charles P, Marey I, Tabet AC, Levy J, Perrin L, Hartmann A, Lesca G, Schluth-Bolard C, Monin P, Dupuis-Girod S, Guillen Sacoto MJ, Schnur RE, Zhu Z, Poisson A, El Chehadeh S, Alembik Y, Bruel AL, Lehalle D, Nambot S, Moutton S, Odent S, Jaillard S, Dubourg C, Hilhorst-Hofstee Y, Barbaro-Dieber T, Ortega L, Bhoj EJ, Masser-Frye D, Bird LM, Lindstrom K, Ramsey KM, Narayanan V, Fassi E, Willing M, Cole T, Salter CG, Akilapa R, Vandersteen A, Canham N, Rump P, Gerkes EH, Klein Wassink-Ruiter JS, Bijlsma E, Hoffer MJV, Vargas M, Wojcik A, Cherik F, Francannet C, Rosenfeld JA, Machol K, Scott DA, Bacino CA, Wang X, Clark GD, Bertoli M, Zwolinski S, Thomas RH, Akay E, Chang RC, Bressi R, Sanchez Russo R, Srour M, Russell L, Goyette AME, Dupuis L, Mendoza-Londono R, Karimov C, Joseph M, Nizon M, Cogné B, Kuechler A, Piton A, Klee EW, Lefebvre V, Clark KJ, Depienne C. Widening of the genetic and clinical spectrum of Lamb-Shaffer syndrome, a neurodevelopmental disorder due to SOX5 haploinsufficiency. Genet Med 2019; 22:524-537. [PMID: 31578471 DOI: 10.1038/s41436-019-0657-0] [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: 06/05/2019] [Revised: 09/06/2019] [Accepted: 09/10/2019] [Indexed: 12/18/2022] Open
Abstract
PURPOSE Lamb-Shaffer syndrome (LAMSHF) is a neurodevelopmental disorder described in just over two dozen patients with heterozygous genetic alterations involving SOX5, a gene encoding a transcription factor regulating cell fate and differentiation in neurogenesis and other discrete developmental processes. The genetic alterations described so far are mainly microdeletions. The present study was aimed at increasing our understanding of LAMSHF, its clinical and genetic spectrum, and the pathophysiological mechanisms involved. METHODS Clinical and genetic data were collected through GeneMatcher and clinical or genetic networks for 41 novel patients harboring various types ofSOX5 alterations. Functional consequences of selected substitutions were investigated. RESULTS Microdeletions and truncating variants occurred throughout SOX5. In contrast, most missense variants clustered in the pivotal SOX-specific high-mobility-group domain. The latter variants prevented SOX5 from binding DNA and promoting transactivation in vitro, whereas missense variants located outside the high-mobility-group domain did not. Clinical manifestations and severity varied among patients. No clear genotype-phenotype correlations were found, except that missense variants outside the high-mobility-group domain were generally better tolerated. CONCLUSIONS This study extends the clinical and genetic spectrum associated with LAMSHF and consolidates evidence that SOX5 haploinsufficiency leads to variable degrees of intellectual disability, language delay, and other clinical features.
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Affiliation(s)
- Ash Zawerton
- Department of Cellular & Molecular Medicine, Cleveland Clinic Lerner Research Institute, Cleveland, OH, USA
| | - Cyril Mignot
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.,AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique et de Cytogénétique; Centre de Référence Déficiences Intellectuelles de Causes Rares, GRC UPMC « Déficience Intellectuelle et Autisme », Paris, France
| | - Ashley Sigafoos
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Patrick R Blackburn
- Center for Individualized Medicine, Department of Health Science Research, and Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Abdul Haseeb
- Department of Surgery, Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | | | - Shoji Ichikawa
- Department of Clinical Diagnostics, Ambry Genetics, Aliso Viejo, CA, USA
| | - Caroline Nava
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.,AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique et de Cytogénétique; Centre de Référence Déficiences Intellectuelles de Causes Rares, GRC UPMC « Déficience Intellectuelle et Autisme », Paris, France
| | - Boris Keren
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.,AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique et de Cytogénétique; Centre de Référence Déficiences Intellectuelles de Causes Rares, GRC UPMC « Déficience Intellectuelle et Autisme », Paris, France
| | - Perrine Charles
- AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique et de Cytogénétique; Centre de Référence Déficiences Intellectuelles de Causes Rares, GRC UPMC « Déficience Intellectuelle et Autisme », Paris, France
| | - Isabelle Marey
- AP-HP, Hôpital Pitié-Salpêtrière, Département de Génétique et de Cytogénétique; Centre de Référence Déficiences Intellectuelles de Causes Rares, GRC UPMC « Déficience Intellectuelle et Autisme », Paris, France
| | - Anne-Claude Tabet
- Genetics Department, Robert Debré Hospital, APHP, Paris, France.,Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France
| | - Jonathan Levy
- Genetics Department, Robert Debré Hospital, APHP, Paris, France
| | - Laurence Perrin
- Genetics Department, Robert Debré Hospital, APHP, Paris, France
| | - Andreas Hartmann
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.,APHP, Department of Neurology, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - Gaetan Lesca
- Service de Génétique, Hospices Civils de Lyon - GHE, Lyon, France.,CNRS UMR 5292, INSERM U1028, CNRL, and Université Claude Bernard Lyon 1, GHE, Lyon, France
| | - Caroline Schluth-Bolard
- Service de Génétique, Hospices Civils de Lyon - GHE, Lyon, France.,CNRS UMR 5292, INSERM U1028, CNRL, and Université Claude Bernard Lyon 1, GHE, Lyon, France
| | - Pauline Monin
- Service de Génétique, Hospices Civils de Lyon - GHE, Lyon, France
| | - Sophie Dupuis-Girod
- Service de Génétique, Hospices Civils de Lyon - GHE, Lyon, France.,Centre de référence pour la maladie de Rendu-Osler, Bron, France
| | | | | | | | - Alice Poisson
- GénoPsy, Reference Center for Diagnosis and Management of Genetic Psychiatric Disorders, Centre Hospitalier le Vinatier and EDR-Psy Team (CNRS & Lyon 1 Claude Bernard University), Lyon, France
| | - Salima El Chehadeh
- Département de Génétique Médicale, CHU de Hautepierre, Strasbourg, France
| | - Yves Alembik
- Département de Génétique Médicale, CHU de Hautepierre, Strasbourg, France
| | - Ange-Line Bruel
- INSERM 1231 LNC, Génétique des Anomalies du Développement, Université de Bourgogne-Franche Comté, Dijon, France.,FHU-TRANSLAD, Université de Bourgogne/CHU Dijon, Dijon, France
| | - Daphné Lehalle
- INSERM 1231 LNC, Génétique des Anomalies du Développement, Université de Bourgogne-Franche Comté, Dijon, France.,Centre de Génétique et Centre de Référence Maladies Rares «Anomalies du Développement de l'Interrégion Est», Hôpital d'Enfants, CHU Dijon Bourgogne, Dijon, France
| | - Sophie Nambot
- INSERM 1231 LNC, Génétique des Anomalies du Développement, Université de Bourgogne-Franche Comté, Dijon, France.,Centre de Génétique et Centre de Référence Maladies Rares «Anomalies du Développement de l'Interrégion Est», Hôpital d'Enfants, CHU Dijon Bourgogne, Dijon, France
| | - Sébastien Moutton
- INSERM 1231 LNC, Génétique des Anomalies du Développement, Université de Bourgogne-Franche Comté, Dijon, France.,Centre de Génétique et Centre de Référence Maladies Rares «Anomalies du Développement de l'Interrégion Est», Hôpital d'Enfants, CHU Dijon Bourgogne, Dijon, France
| | - Sylvie Odent
- CHU de Rennes, service de génétique clinique, Rennes, France.,Univ Rennes, CNRS, IGDR, UMR 6290, Rennes, France
| | - Sylvie Jaillard
- Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, Rennes, France
| | - Christèle Dubourg
- Univ Rennes, CNRS, IGDR, UMR 6290, Rennes, France.,Service de Génétique Moléculaire et Génomique, CHU, Rennes, France
| | | | | | - Lucia Ortega
- Cook Childrens Medical Center, Fort Worth, TX, USA
| | - Elizabeth J Bhoj
- Department of Clinical Genetics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Diane Masser-Frye
- Rady Children's Hospital San Diego, Division of Genetics and Dysmorphology, San Diego, CA, USA
| | - Lynne M Bird
- Rady Children's Hospital San Diego, Division of Genetics and Dysmorphology, San Diego, CA, USA.,Department of Pediatrics, University of California-San Diego, San Diego, CA, USA
| | - Kristin Lindstrom
- Division of Genetics and Metabolism, Phoenix Children's Hospital, Phoenix, AZ, USA
| | - Keri M Ramsey
- Translational Genomics Research Institute (TGen), Center for Rare Childhood Disorders, Phoenix, AZ, USA
| | - Vinodh Narayanan
- Translational Genomics Research Institute (TGen), Center for Rare Childhood Disorders, Phoenix, AZ, USA
| | - Emily Fassi
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
| | - Marcia Willing
- Division of Genetics and Genomic Medicine, Department of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA
| | - Trevor Cole
- West Midlands Regional Genetics Service and Birmingham Health Partners, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Claire G Salter
- West Midlands Regional Genetics Service and Birmingham Health Partners, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK.,RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Exeter, UK
| | - Rhoda Akilapa
- North West Thames Regional Genetics Service, Northwick Park Hospital, Harrow, London, UK
| | | | - Natalie Canham
- North West Thames Regional Genetics Service, Northwick Park Hospital, London, UK.,Cheshire & Merseyside Regional Genetics Service, Liverpool Women's Hospital, Liverpool, UK
| | - Patrick Rump
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Erica H Gerkes
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | | | - Emilia Bijlsma
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Mariëtte J V Hoffer
- Department of Clinical Genetics, Leiden University Medical Center, Leiden, Netherlands
| | - Marcelo Vargas
- Gillette Children's Specialty Healthcare, St. Paul, MN, USA.,Children's Minnesota, Minneapolis, MN, USA
| | - Antonina Wojcik
- Gillette Children's Specialty Healthcare, St. Paul, MN, USA.,Children's Minnesota, Minneapolis, MN, USA
| | - Florian Cherik
- Service de génétique clinique, Centre de Référence Maladies Rares «Anomalies du Développement et syndromes malformatifs du Sud-Est", CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Christine Francannet
- Service de génétique clinique, Centre de Référence Maladies Rares «Anomalies du Développement et syndromes malformatifs du Sud-Est", CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Jill A Rosenfeld
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Keren Machol
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Daryl A Scott
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX, USA.,Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX, USA
| | - Carlos A Bacino
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Xia Wang
- Department of Molecular & Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Gary D Clark
- Pediatrics-Neurology, Baylor College of Medicine, Houston, TX, USA
| | - Marta Bertoli
- Northern Genetics Service-Newcastle upon Tyne NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Simon Zwolinski
- Northern Genetics Service-Newcastle upon Tyne NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Rhys H Thomas
- Institute of Neuroscience, Newcastle University, Framlington Place, Newcastle upon Tyne, UK.,Department of Neurology, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Ela Akay
- Department of Neurology, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Richard C Chang
- Division of Metabolic Disorders, Children's Hospital of Orange County (CHOC), Orange, CA, USA
| | - Rebekah Bressi
- Division of Metabolic Disorders, Children's Hospital of Orange County (CHOC), Orange, CA, USA
| | | | - Myriam Srour
- Division of Pediatric Neurology, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Center, Montreal, QC, Canada
| | - Laura Russell
- Division of Medical Genetics, Department of Specialized Medicine, McGill University, Montreal, QC, Canada
| | - Anne-Marie E Goyette
- Child Development Program, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Center, Montreal, QC, Canada
| | - Lucie Dupuis
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada
| | - Roberto Mendoza-Londono
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children and University of Toronto, Toronto, ON, Canada
| | | | - Maries Joseph
- Medical Genetics and Metabolism, Valley Children's Hospital, Madera, CA, USA
| | - Mathilde Nizon
- CHU Nantes, Service de Génétique Médicale, Nantes, France.,INSERM, CNRS, UNIV Nantes, l'institut du thorax, Nantes, France
| | - Benjamin Cogné
- CHU Nantes, Service de Génétique Médicale, Nantes, France.,INSERM, CNRS, UNIV Nantes, l'institut du thorax, Nantes, France
| | - Alma Kuechler
- Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Amélie Piton
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,IGBMC, CNRS UMR 7104/INSERM U964/Université de Strasbourg, Illkirch, France
| | | | - Eric W Klee
- Center for Individualized Medicine, Department of Health Science Research, and Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.,Department of Clinical Genomics, Mayo Clinic, Rochester, MN, USA
| | - Véronique Lefebvre
- Department of Surgery, Division of Orthopaedic Surgery, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.
| | - Karl J Clark
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Christel Depienne
- INSERM U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France. .,Institut für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany. .,IGBMC, CNRS UMR 7104/INSERM U964/Université de Strasbourg, Illkirch, France.
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5
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Fasham J, Arno G, Lin S, Xu M, Carss KJ, Hull S, Lane A, Robson AG, Wenger O, Self JE, Harlalka GV, Salter CG, Schema L, Moss TJ, Cheetham ME, Moore AT, Raymond FL, Chen R, Baple EL, Webster AR, Crosby AH. Delineating the expanding phenotype associated with SCAPER gene mutation. Am J Med Genet A 2019; 179:1665-1671. [PMID: 31192531 PMCID: PMC6772143 DOI: 10.1002/ajmg.a.61202] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/01/2019] [Accepted: 05/05/2019] [Indexed: 11/19/2022]
Affiliation(s)
- James Fasham
- Medical Research, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon and Exeter NHS Foundation Trust, Exeter, United Kingdom.,Peninsula Clinical Genetics Service, Royal Devon and Exeter Hospital (Heavitree), Exeter, United Kingdom
| | - Gavin Arno
- UCL Institute of Ophthalmology, University College London, London, United Kingdom.,Moorfields Eye Hospital, London, United Kingdom
| | - Siying Lin
- Medical Research, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon and Exeter NHS Foundation Trust, Exeter, United Kingdom
| | - Mingchu Xu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas
| | - Keren J Carss
- Department of Haematology, NHS Blood and Transplant Centre, University of Cambridge, Cambridge, United Kingdom.,NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Sarah Hull
- UCL Institute of Ophthalmology, University College London, London, United Kingdom.,Moorfields Eye Hospital, London, United Kingdom
| | - Amelia Lane
- UCL Institute of Ophthalmology, University College London, London, United Kingdom
| | - Anthony G Robson
- UCL Institute of Ophthalmology, University College London, London, United Kingdom.,Moorfields Eye Hospital, London, United Kingdom
| | - Olivia Wenger
- New Leaf Center, Clinic for Special Children, Mount Eaton, Ohio
| | - Jay E Self
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Gaurav V Harlalka
- Medical Research, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon and Exeter NHS Foundation Trust, Exeter, United Kingdom
| | - Claire G Salter
- Medical Research, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon and Exeter NHS Foundation Trust, Exeter, United Kingdom
| | - Lynn Schema
- Division of Genetics and Metabolism, University of Minnesota Medical Center - Fairview, Minneapolis, Minnesota
| | - Timothy J Moss
- Division of Genetics and Metabolism, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Michael E Cheetham
- UCL Institute of Ophthalmology, University College London, London, United Kingdom
| | - Anthony T Moore
- UCL Institute of Ophthalmology, University College London, London, United Kingdom.,Moorfields Eye Hospital, London, United Kingdom.,Ophthalmology Department, UCSF School of Medicine, Koret Vision Centre, San Francisco, California
| | - F Lucy Raymond
- NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom.,Department of Medical Genetics, Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Rui Chen
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas
| | - Emma L Baple
- Medical Research, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon and Exeter NHS Foundation Trust, Exeter, United Kingdom.,Peninsula Clinical Genetics Service, Royal Devon and Exeter Hospital (Heavitree), Exeter, United Kingdom
| | - Andrew R Webster
- UCL Institute of Ophthalmology, University College London, London, United Kingdom.,Moorfields Eye Hospital, London, United Kingdom
| | - Andrew H Crosby
- Medical Research, RILD Wellcome Wolfson Centre, University of Exeter Medical School, Royal Devon and Exeter NHS Foundation Trust, Exeter, United Kingdom
| | -
- NIHR BioResource - Rare Diseases, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
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6
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Jeffries AR, Maroofian R, Salter CG, Chioza BA, Cross HE, Patton MA, Dempster E, Temple IK, Mackay DJG, Rezwan FI, Aksglaede L, Baralle D, Dabir T, Hunter MF, Kamath A, Kumar A, Newbury-Ecob R, Selicorni A, Springer A, Van Maldergem L, Varghese V, Yachelevich N, Tatton-Brown K, Mill J, Crosby AH, Baple EL. Growth disrupting mutations in epigenetic regulatory molecules are associated with abnormalities of epigenetic aging. Genome Res 2019; 29:1057-1066. [PMID: 31160375 PMCID: PMC6633263 DOI: 10.1101/gr.243584.118] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 05/24/2019] [Indexed: 11/24/2022]
Abstract
Germline mutations in fundamental epigenetic regulatory molecules including DNA methyltransferase 3 alpha (DNMT3A) are commonly associated with growth disorders, whereas somatic mutations are often associated with malignancy. We profiled genome-wide DNA methylation patterns in DNMT3A c.2312G > A; p.(Arg771Gln) carriers in a large Amish sibship with Tatton-Brown–Rahman syndrome (TBRS), their mosaic father, and 15 TBRS patients with distinct pathogenic de novo DNMT3A variants. This defined widespread DNA hypomethylation at specific genomic sites enriched at locations annotated as genes involved in morphogenesis, development, differentiation, and malignancy predisposition pathways. TBRS patients also displayed highly accelerated DNA methylation aging. These findings were most marked in a carrier of the AML-associated driver mutation p.Arg882Cys. Our studies additionally defined phenotype-related accelerated and decelerated epigenetic aging in two histone methyltransferase disorders: NSD1 Sotos syndrome overgrowth disorder and KMT2D Kabuki syndrome growth impairment. Together, our findings provide fundamental new insights into aberrant epigenetic mechanisms, the role of epigenetic machinery maintenance, and determinants of biological aging in these growth disorders.
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Affiliation(s)
- Aaron R Jeffries
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Exeter, EX2 5DW, United Kingdom
| | - Reza Maroofian
- Genetics Research Centre, Molecular and Clinical Sciences Institute, St. George's University of London, London SW17 0RE, United Kingdom
| | - Claire G Salter
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Exeter, EX2 5DW, United Kingdom.,Human Genetics and Genomic Medicine, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, United Kingdom.,Wessex Clinical Genetics Service, Princess Anne Hospital, Southampton, SO16 5YA, United Kingdom
| | - Barry A Chioza
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Exeter, EX2 5DW, United Kingdom
| | - Harold E Cross
- Department of Ophthalmology and Vision Science, University of Arizona School of Medicine, Tucson, Arizona 85711, USA
| | - Michael A Patton
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Exeter, EX2 5DW, United Kingdom.,Genetics Research Centre, Molecular and Clinical Sciences Institute, St. George's University of London, London SW17 0RE, United Kingdom
| | - Emma Dempster
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Exeter, EX2 5DW, United Kingdom
| | - I Karen Temple
- Human Genetics and Genomic Medicine, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, United Kingdom.,Wessex Clinical Genetics Service, Princess Anne Hospital, Southampton, SO16 5YA, United Kingdom
| | - Deborah J G Mackay
- Human Genetics and Genomic Medicine, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, United Kingdom
| | - Faisal I Rezwan
- Human Genetics and Genomic Medicine, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, United Kingdom
| | - Lise Aksglaede
- Department of Clinical Genetics, Copenhagen University Hospital, Blegdamsvej 3B, 2200 Copenhagen N, Denmark
| | - Diana Baralle
- Human Genetics and Genomic Medicine, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, United Kingdom.,Wessex Clinical Genetics Service, Princess Anne Hospital, Southampton, SO16 5YA, United Kingdom
| | - Tabib Dabir
- Northern Ireland Regional Genetics Centre, Clinical Genetics Service, Belfast City Hospital, Belfast, BT9 7AB, United Kingdom
| | - Matthew F Hunter
- Monash Genetics, Monash Health, Clayton, Victoria, VIC 3168, Australia.,Department of Paediatrics, Monash University, Clayton, Victoria, VIC 3168, Australia
| | - Arveen Kamath
- Institute of Medical Genetics, University Hospital of Wales, Cardiff, CF14 4XN, United Kingdom
| | - Ajith Kumar
- North East Thames Regional Genetics Service and Department of Clinical Genetics, Great Ormond Street Hospital, London, WC1N 3JH, United Kingdom
| | - Ruth Newbury-Ecob
- University Hospitals Bristol, Department of Clinical Genetics, St Michael's Hospital, Bristol, BS2 8EG, United Kingdom
| | | | - Amanda Springer
- Monash Genetics, Monash Health, Clayton, Victoria, VIC 3168, Australia.,Department of Paediatrics, Monash University, Clayton, Victoria, VIC 3168, Australia
| | - Lionel Van Maldergem
- Centre de génétique humaine and Clinical Investigation Center 1431 (INSERM), Université de Franche-Comté, 25000, Besançon, France
| | - Vinod Varghese
- Institute of Medical Genetics, University Hospital of Wales, Cardiff, CF14 4XN, United Kingdom
| | - Naomi Yachelevich
- Clinical Genetics Services, New York University Hospitals Center, New York University, New York, New York 10016, USA
| | - Katrina Tatton-Brown
- Genetics Research Centre, Molecular and Clinical Sciences Institute, St. George's University of London, London SW17 0RE, United Kingdom.,Division of Genetics and Epidemiology, Institute of Cancer Research, London SM2 5NG, United Kingdom.,South West Thames Regional Genetics Service, St. George's University Hospitals NHS Foundation Trust, London SW17 0QT, United Kingdom
| | - Jonathan Mill
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Exeter, EX2 5DW, United Kingdom
| | - Andrew H Crosby
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Exeter, EX2 5DW, United Kingdom
| | - Emma L Baple
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Exeter, EX2 5DW, United Kingdom.,Peninsula Clinical Genetics Service, Royal Devon and Exeter Hospital, Exeter, EX1 2ED, United Kingdom
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7
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Salter CG, Beijer D, Hardy H, Barwick KES, Bower M, Mademan I, De Jonghe P, Deconinck T, Russell MA, McEntagart MM, Chioza BA, Blakely RD, Chilton JK, De Bleecker J, Baets J, Baple EL, Walk D, Crosby AH. Truncating SLC5A7 mutations underlie a spectrum of dominant hereditary motor neuropathies. Neurol Genet 2018; 4:e222. [PMID: 29582019 PMCID: PMC5866402 DOI: 10.1212/nxg.0000000000000222] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/15/2017] [Indexed: 11/29/2022]
Abstract
Objective To identify the genetic cause of disease in 2 previously unreported families with forms of distal hereditary motor neuropathies (dHMNs). Methods The first family comprises individuals affected by dHMN type V, which lacks the cardinal clinical feature of vocal cord paralysis characteristic of dHMN-VII observed in the second family. Next-generation sequencing was performed on the proband of each family. Variants were annotated and filtered, initially focusing on genes associated with neuropathy. Candidate variants were further investigated and confirmed by dideoxy sequence analysis and cosegregation studies. Thorough patient phenotyping was completed, comprising clinical history, examination, and neurologic investigation. Results dHMNs are a heterogeneous group of peripheral motor neuron disorders characterized by length-dependent neuropathy and progressive distal limb muscle weakness and wasting. We previously reported a dominant-negative frameshift mutation located in the concluding exon of the SLC5A7 gene encoding the choline transporter (CHT), leading to protein truncation, as the likely cause of dominantly-inherited dHMN-VII in an extended UK family. In this study, our genetic studies identified distinct heterozygous frameshift mutations located in the last coding exon of SLC5A7, predicted to result in the truncation of the CHT C-terminus, as the likely cause of the condition in each family. Conclusions This study corroborates C-terminal CHT truncation as a cause of autosomal dominant dHMN, confirming upper limb predominating over lower limb involvement, and broadening the clinical spectrum arising from CHT malfunction.
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Affiliation(s)
- Claire G Salter
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Danique Beijer
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Holly Hardy
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Katy E S Barwick
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Matthew Bower
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Ines Mademan
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Peter De Jonghe
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Tine Deconinck
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Mark A Russell
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Meriel M McEntagart
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Barry A Chioza
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Randy D Blakely
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - John K Chilton
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Jan De Bleecker
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Jonathan Baets
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Emma L Baple
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - David Walk
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
| | - Andrew H Crosby
- RILD Wellcome Wolfson Centre (C.G.S., H.H., K.E.S.B., M.A.R., B.A.C., J.K.C., E.L.B., A.H.C.), Royal Devon & Exeter NHS Foundation Trust, Exeter; Wessex Clinical Genetics Service (C.G.S.), Princess Anne Hospital, Southampton, United Kingdom; Neurogenetics Group (D.B., I.M., P.D.J., T.D., J.B.), Center for Molecular Neurology, VIB; Laboratory of Neuromuscular Pathology (D.B., I.M., P.D.J., T.D., J.B.), Institute Born-Bunge, University of Antwerp; Department of Neurology (M.B., D.W.), University of Minnesota, Minneapolis, MN; Department of Neurology (P.D.J., J.B.), Neuromuscular Reference Centre, Antwerp University Hospital, Antwerpen, Belgium; Clinical Genetics (M.M.M.), St. George's University of London, London, United Kingdom; Biomedical Science (R.D.B.), Florida Atlantic University, Jupiter Campus, FL; and Department of Neurology (J.D.B.), University Hospital Ghent, Ghent, Belgium; Peninsula Clinical Genetics Service (E.L.B.), Royal Devon and Exeter Hospital, Exeter, United Kingdom
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8
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Wang H, Salter CG, Refai O, Hardy H, Barwick KES, Akpulat U, Kvarnung M, Chioza BA, Harlalka G, Taylan F, Sejersen T, Wright J, Zimmerman HH, Karakaya M, Stüve B, Weis J, Schara U, Russell MA, Abdul-Rahman OA, Chilton J, Blakely RD, Baple EL, Cirak S, Crosby AH. Choline transporter mutations in severe congenital myasthenic syndrome disrupt transporter localization. Brain 2017; 140:2838-2850. [PMID: 29088354 DOI: 10.1093/brain/awx249] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 04/21/2017] [Accepted: 08/05/2017] [Indexed: 11/12/2022] Open
Abstract
The presynaptic, high-affinity choline transporter is a critical determinant of signalling by the neurotransmitter acetylcholine at both central and peripheral cholinergic synapses, including the neuromuscular junction. Here we describe an autosomal recessive presynaptic congenital myasthenic syndrome presenting with a broad clinical phenotype due to homozygous choline transporter missense mutations. The clinical phenotype ranges from the classical presentation of a congenital myasthenic syndrome in one patient (p.Pro210Leu), to severe neurodevelopmental delay with brain atrophy (p.Ser94Arg) and extend the clinical outcomes to a more severe spectrum with infantile lethality (p.Val112Glu). Cells transfected with mutant transporter construct revealed a virtually complete loss of transport activity that was paralleled by a reduction in transporter cell surface expression. Consistent with these findings, studies to determine the impact of gene mutations on the trafficking of the Caenorhabditis elegans choline transporter orthologue revealed deficits in transporter export to axons and nerve terminals. These findings contrast with our previous findings in autosomal dominant distal hereditary motor neuropathy of a dominant-negative frameshift mutation at the C-terminus of choline transporter that was associated with significantly reduced, but not completely abrogated choline transporter function. Together our findings define divergent neuropathological outcomes arising from different classes of choline transporter mutation with distinct disease processes and modes of inheritance. These findings underscore the essential role played by the choline transporter in sustaining acetylcholine neurotransmission at both central and neuromuscular synapses, with important implications for treatment and drug selection.
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Affiliation(s)
- Haicui Wang
- University Hospital Cologne, Department of Pediatrics, Kerpener Str. 62, 50937 Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, Robert-Koch-Str. 21, 50931 Cologne, Germany
| | - Claire G Salter
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK.,Human Genetics and Genomic Medicine, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
| | - Osama Refai
- Department of Biomedical Science, Charles E. Schmidt College of Medicine and Brain Institute, Florida Atlantic University, Jupiter, FL, USA
| | - Holly Hardy
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Katy E S Barwick
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Ugur Akpulat
- University Hospital Cologne, Department of Pediatrics, Kerpener Str. 62, 50937 Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, Robert-Koch-Str. 21, 50931 Cologne, Germany.,Kastamonu University, 37150 Kastamonu, Turkey
| | - Malin Kvarnung
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, 17176 Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Barry A Chioza
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Gaurav Harlalka
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Fulya Taylan
- Department of Molecular Medicine and Surgery, Center for Molecular Medicine, Karolinska Institutet, 17176 Stockholm, Sweden.,Science for Life Laboratory, Karolinska Institutet Science Park, 17121 Stockholm, Sweden
| | - Thomas Sejersen
- Science for Life Laboratory, Karolinska Institutet Science Park, 17121 Stockholm, Sweden.,Department of Women's and Children's Health, Division of Pediatric Neurology, Karolinska Institutet, 17176 Stockholm, Sweden
| | - Jane Wright
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Holly H Zimmerman
- Division of Medical Genetics, University of Mississippi Medical Center, Jackson, Mississippi 39216, USA
| | - Mert Karakaya
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Robert-Koch-Str. 21, 50931 Cologne, Germany
| | - Burkhardt Stüve
- Children's Hospital Social Pediatric Center, 50735 Cologne, Germany
| | - Joachim Weis
- Institute of Neuropathology and Jülich Aachen Research Alliance (JARA) Brain Translational Medicine, RWTH Aachen University, 52074 Aachen, Germany
| | - Ulrike Schara
- University Children's Hospital Essen, Essen, Germany
| | - Mark A Russell
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Omar A Abdul-Rahman
- Department of Pediatrics, University of Mississippi Medical Center, Jackson, Mississippi 39216, USA
| | - John Chilton
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Randy D Blakely
- Department of Biomedical Science, Charles E. Schmidt College of Medicine and Brain Institute, Florida Atlantic University, Jupiter, FL, USA
| | - Emma L Baple
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Sebahattin Cirak
- University Hospital Cologne, Department of Pediatrics, Kerpener Str. 62, 50937 Cologne, Germany.,Center for Molecular Medicine Cologne (CMMC), University of Cologne, Robert-Koch-Str. 21, 50931 Cologne, Germany
| | - Andrew H Crosby
- RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
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Ahmed MY, Al-Khayat A, Al-Murshedi F, Al-Futaisi A, Chioza BA, Pedro Fernandez-Murray J, Self JE, Salter CG, Harlalka GV, Rawlins LE, Al-Zuhaibi S, Al-Azri F, Al-Rashdi F, Cazenave-Gassiot A, Wenk MR, Al-Salmi F, Patton MA, Silver DL, Baple EL, McMaster CR, Crosby AH. A mutation of EPT1 (SELENOI) underlies a new disorder of Kennedy pathway phospholipid biosynthesis. Brain 2017; 140:547-554. [PMID: 28052917 PMCID: PMC5382949 DOI: 10.1093/brain/aww318] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 10/19/2016] [Indexed: 12/20/2022] Open
Abstract
Mutations in genes involved in lipid metabolism have increasingly been associated with various subtypes of hereditary spastic paraplegia, a highly heterogeneous group of neurodegenerative motor neuron disorders characterized by spastic paraparesis. Here, we report an unusual autosomal recessive neurodegenerative condition, best classified as a complicated form of hereditary spastic paraplegia, associated with mutation in the ethanolaminephosphotransferase 1 (EPT1) gene (now known as SELENOI), responsible for the final step in Kennedy pathway forming phosphatidylethanolamine from CDP-ethanolamine. Phosphatidylethanolamine is a glycerophospholipid that, together with phosphatidylcholine, constitutes more than half of the total phospholipids in eukaryotic cell membranes. We determined that the mutation defined dramatically reduces the enzymatic activity of EPT1, thereby hindering the final step in phosphatidylethanolamine synthesis. Additionally, due to central nervous system inaccessibility we undertook quantification of phosphatidylethanolamine levels and species in patient and control blood samples as an indication of liver phosphatidylethanolamine biosynthesis. Although this revealed alteration to levels of specific phosphatidylethanolamine fatty acyl species in patients, overall phosphatidylethanolamine levels were broadly unaffected indicating that in blood EPT1 inactivity may be compensated for, in part, via alternate biochemical pathways. These studies define the first human disorder arising due to defective CDP-ethanolamine biosynthesis and provide new insight into the role of Kennedy pathway components in human neurological function.
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Affiliation(s)
- Mustafa Y Ahmed
- Medical Research (Level 4), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Aisha Al-Khayat
- Department of Biology, College of Science, Sultan Qaboos University, Sultanate of Oman
| | - Fathiya Al-Murshedi
- Department of Genetics, College of Medicine, Sultan Qaboos University, Sultanate of Oman
| | - Amna Al-Futaisi
- Department of Paediatrics, Sultan Qaboos University Hospital, Sultanate of Oman
| | - Barry A Chioza
- Medical Research (Level 4), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | | | - Jay E Self
- Faculty of Medicine, University of Southampton, UK
| | - Claire G Salter
- West Midlands Regional Genetics Service, Birmingham Women's NHS Foundation Trust, Mindelsohn Way, Birmingham, B15 2TG, UK
| | - Gaurav V Harlalka
- Medical Research (Level 4), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Lettie E Rawlins
- Medical Research (Level 4), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | - Sana Al-Zuhaibi
- Department of Ophthalmology, Sultan Qaboos University Hospital, Sultanate of Oman
| | - Faisal Al-Azri
- Department of Radiology and Molecular Imaging, Sultan Qaboos University Hospital, Sultanate of Oman
| | - Fatma Al-Rashdi
- Department of Paediatrics, Sameal Hospital, Ministry of Health, Sultanate of Oman
| | - Amaury Cazenave-Gassiot
- SLING, Life Sciences Institute, National University of Singapore, Singapore.,Department of Biochemistry, National University of Singapore, Singapore
| | - Markus R Wenk
- SLING, Life Sciences Institute, National University of Singapore, Singapore.,Department of Biochemistry, National University of Singapore, Singapore
| | - Fatema Al-Salmi
- Department of Biology, College of Science, Sultan Qaboos University, Sultanate of Oman
| | - Michael A Patton
- Medical Research (Level 4), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK.,Department of Biology, College of Science, Sultan Qaboos University, Sultanate of Oman
| | - David L Silver
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, Singapore
| | - Emma L Baple
- Medical Research (Level 4), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
| | | | - Andrew H Crosby
- Medical Research (Level 4), University of Exeter Medical School, RILD Wellcome Wolfson Centre, Royal Devon and Exeter NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK
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10
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Salter CG, Davies JH, Moon RJ, Fairhurst J, Bunyan D, Foulds N. Further defining the phenotypic spectrum of B4GALT7 mutations. Am J Med Genet A 2016; 170:1556-63. [PMID: 26940150 DOI: 10.1002/ajmg.a.37604] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [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: 07/02/2015] [Accepted: 02/04/2016] [Indexed: 11/10/2022]
Abstract
Proteoglycans are components of the extracellular matrix with diverse biological functions. Defects in proteoglycan synthesis have been linked to several human diseases with common features of short stature, hypermobility, joint dislocations, and skeletal dysplasia. B4GALT7 encodes galactosyltransferase-I that catalyzes the addition of a galactose moiety to a xylosyl group in the tetrasaccharide linker of proteoglycans. Mutations in this gene have been associated with the rare progeroid form of Ehlers Danlos syndrome and in addition more recently found to underlie Larsen of Reunion Island syndrome. Nine individuals have been reported with a diagnosis of the progeroid form of Ehlers Danlos syndrome, four of whom have had molecular characterization showing homozygous or compound heterozygous mutations in B4GALT7. We report two newly described patients with compound heterozygous mutations in B4GALT7, and show that the six individuals with confirmed mutations do not have the progeroid features described in the original five patients with a clinical diagnosis of the progeroid form of Ehlers Danlos syndrome. We suggest that galactosyltransferase-I deficiency does not cause the progeroid form of Ehlers Danlos syndrome, but instead results in a clinically recognizable syndrome comprising short stature, joint hypermobility, radioulnar synostosis, and severe hypermetropia. This group of syndromic patients are on a phenotypic spectrum with individuals who have Larsen of Reunion Island syndrome, although the key features of osteopenia, fractures and hypermetropia have not been reported in patients from Reunion Island. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Claire G Salter
- West Midlands Regional Genetics Service, Birmingham Women's Hospital NHS Foundation Trust, Birmingham, United Kingdom
| | - Justin H Davies
- Paediatric Endocrinology, University Hospitals Southampton NHS Foundation Trust, United Kingdom
| | - Rebecca J Moon
- Paediatric Endocrinology, University Hospitals Southampton NHS Foundation Trust, United Kingdom
| | - Joanna Fairhurst
- Paediatric Radiology, University Hospitals Southampton NHS Foundation Trust, United Kingdom
| | - David Bunyan
- Wessex Regional Genetics Services, Salisbury District Hospital, United Kingdom
| | | | - Nicola Foulds
- Wessex Clinical Genetics Service, University Hospitals Southampton NHS Foundation Trust, United Kingdom
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Salter CG, Baralle D, Collinson MN, Self JE. Expanding the ocular phenotype of 14q terminal deletions: A novel presentation of microphthalmia and coloboma in ring 14 syndrome with associated 14q32.31 deletion and review of the literature. Am J Med Genet A 2016; 170A:1017-22. [DOI: 10.1002/ajmg.a.37436] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 10/03/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Claire G. Salter
- Wessex Clinical Genetics Service; Princess Anne Hospital; Southampton United Kingdom
| | - Diana Baralle
- Human Development and Health; School of Medicine; University of Southampton; Southampton United Kingdom
| | - Morag N. Collinson
- Wessex Regional Genetics Laboratory; Salisbury NHS Foundation Trust; Salisbury District Hospital; Salisbury Wiltshire United Kingdom
| | - James E. Self
- Department of Ophthalmology; Southampton General Hospital; Southampton United Kingdom
- Clinical and Experimental Sciences; School of Medicine; University of Southampton; Southampton United Kingdom
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