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Hordijk S, Carter T, Bierings R. A new look at an old body: molecular determinants of Weibel-Palade body composition and von Willebrand factor exocytosis. J Thromb Haemost 2024; 22:1290-1303. [PMID: 38307391 DOI: 10.1016/j.jtha.2024.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/16/2024] [Accepted: 01/19/2024] [Indexed: 02/04/2024]
Abstract
Endothelial cells, forming a monolayer along blood vessels, intricately regulate vascular hemostasis, inflammatory responses, and angiogenesis. A key determinant of these functions is the controlled secretion of Weibel-Palade bodies (WPBs), which are specialized endothelial storage organelles housing a presynthesized pool of the hemostatic protein von Willebrand factor and various other hemostatic, inflammatory, angiogenic, and vasoactive mediators. This review delves into recent mechanistic insights into WPB biology, including the biogenesis that results in their unique morphology, the acquisition of intraluminal vesicles and other cargo, and the contribution of proton pumps to organelle acidification. Additionally, in light of a number of proteomic approaches to unravel the regulatory networks that control WPB formation and secretion, we provide a comprehensive overview of the WPB exocytotic machinery, including their molecular and cellular mechanisms.
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Affiliation(s)
- Sophie Hordijk
- Hematology, Erasmus MC University Medical Center, Rotterdam, The Netherlands. https://twitter.com/SophieHordijk
| | - Tom Carter
- Molecular and Clinical Sciences Research Institute, St George's University of London, London, United Kingdom
| | - Ruben Bierings
- Hematology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.
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2
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Romagnuolo M, Moltrasio C, Cavalli R, Brena M, Tadini G. A novel mutation in the SCN9A gene associated with congenital insensitivity to pain, anhidrosis, and mild cognitive impairment. Pediatr Dermatol 2024; 41:80-83. [PMID: 37345838 DOI: 10.1111/pde.15366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/13/2023] [Indexed: 06/23/2023]
Abstract
Congenital insensitivity to pain (CIP) is a rare phenotype characterized by the inability to perceive pain stimuli with subsequent self-injuries, whereas CIP associated with anhidrosis (CIPA) is an overlapping phenotype mainly characterized by insensitivity to noxious stimuli and anhidrosis. CIP is primarily associated with pathogenetic variants in the SCN9A gene while CIPA is associated with pathogenetic variants in NGF and NRTK genes. However, in recent years, a significant overlap between these two disorders has been observed highlighting the presence of anhidrosis in SCN9A variants. We report the cases of two siblings (age 4 and 6 years) born from consanguineous parents presenting with a previously undescribed phenotype due to a novel pathogenic variant in SCN9A clinically characterized by congenital insensitivity to pain, anhidrosis, and mild cognitive impairment.
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Affiliation(s)
- Maurizio Romagnuolo
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
- Department of Pathophysiology and Transplantation, Università Degli Studi di Milano, Milan, Italy
| | - Chiara Moltrasio
- Dermatology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Riccardo Cavalli
- Pediatric Dermatology Unit, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Michela Brena
- Pediatric Dermatology Unit, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Gianluca Tadini
- Pediatric Dermatology Unit, Department of Clinical Sciences and Community Health, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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3
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Silsby M, Feldman EL, Dortch RD, Roth A, Haroutounian S, Rajabally YA, Vucic S, Shy ME, Oaklander AL, Simon NG. Advances in diagnosis and management of distal sensory polyneuropathies. J Neurol Neurosurg Psychiatry 2023; 94:1025-1039. [PMID: 36997315 PMCID: PMC10544692 DOI: 10.1136/jnnp-2021-328489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 02/23/2023] [Indexed: 04/01/2023]
Abstract
Distal sensory polyneuropathy (DSP) is characterised by length-dependent, sensory-predominant symptoms and signs, including potentially disabling symmetric chronic pain, tingling and poor balance. Some patients also have or develop dysautonomia or motor involvement depending on whether large myelinated or small fibres are predominantly affected. Although highly prevalent, diagnosis and management can be challenging. While classic diabetes and toxic causes are well-recognised, there are increasingly diverse associations, including with dysimmune, rheumatological and neurodegenerative conditions. Approximately half of cases are initially considered idiopathic despite thorough evaluation, but often, the causes emerge later as new symptoms develop or testing advances, for instance with genetic approaches. Improving and standardising DSP metrics, as already accomplished for motor neuropathies, would permit in-clinic longitudinal tracking of natural history and treatment responses. Standardising phenotyping could advance research and facilitate trials of potential therapies, which lag so far. This review updates on recent advances and summarises current evidence for specific treatments.
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Affiliation(s)
- Matthew Silsby
- Neurology, Westmead Hospital, Westmead, New South Wales, Australia
- Brain and Nerve Research Centre, Sydney Medical School, The University of Sydney, New South Wales, Australia
| | - Eva L Feldman
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
| | - Richard D Dortch
- Division of Neuroimaging Research, Barrow Neurological Institute, Phoenix, Arizona, USA
- Department of Radiology and Radiological Sciences, Vanderbilt University Institute of Imaging Science, Nashville, Tennessee, USA
- Department of Biomedical Engineering, Vanderbilt University Institute of Imaging Science, Nashville, Tennessee, USA
| | - Alison Roth
- Division of Neuroimaging Research, Barrow Neurological Institute, Phoenix, Arizona, USA
| | - Simon Haroutounian
- Department of Anesthesiology, Washington University School of Medicine in Saint Louis, St Louis, Missouri, USA
| | - Yusuf A Rajabally
- Inflammatory Neuropathy Clinic, Department of Neurology, University Hospitals Birmingham, Aston Medical School, Aston University, Birmingham, UK
| | - Steve Vucic
- Brain and Nerve Research Centre, Sydney Medical School, The University of Sydney, New South Wales, Australia
| | - Michael E Shy
- Department of Neurology, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Anne Louise Oaklander
- Nerve Unit, Departments of Neurology and Pathology (Neuropathology), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Neil G Simon
- Northern Beaches Clinical School, Macquarie University, Frenchs Forest, New South Wales, Australia
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Pyromali I, Richard L, Derouault P, Vallat JM, Ghorab K, Magdelaine C, Sturtz F, Favreau F, Lia AS. The First Large Deletion of ATL3 Identified in a Patient Presenting with a Sensory Polyneuropathy. Biomedicines 2023; 11:1565. [PMID: 37371660 DOI: 10.3390/biomedicines11061565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
Hereditary sensory neuropathies (HSN) are a heterogenous group of sensory neuropathies. Mutations in ATL3 have been described in patients presenting with hereditary sensory neuropathy IF (HSN1F), a subtype of HSN. Herein, by analyzing targeted-NGS data of a patient presenting with sensory neuropathy symptoms using the CovCopCan bioinformatic tool, we discovered the presence of a deletion of around 3kb in ATL3 from Chr11:63,401,422 to Chr11:63,398,182. This deletion affects ATL3 exons 11 and 12 and could lead to the mutation c.(1036-861_1539+329del), p.(Ala346_Gln513del). In addition, an analysis of the breakpoints' sequences revealed the presence of Alu transposable elements at the position of the breakpoints, which pointed to a possible erroneous recombination event following a non-allelic-homologous-recombination mechanism in this area. Moreover, electronic microscopy analysis of the patient's nerve biopsy revealed a severe rarefaction of the myelinated fibers, a demyelinating-remyelinating process, and an abnormal aspect of the endoplasmic reticulum. These findings suggest that this structural variation could potentially be responsible for the HSN symptoms of the patient. Research of structural variations in ATL3 in numerous other patients presenting similar symptoms should be broadly investigated in order to improve patients' diagnoses.
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Affiliation(s)
- Ioanna Pyromali
- UR 20218, NeurIT, Faculty of Medicine and Pharmacy, University of Limoges, F-87000 Limoges, France
| | - Laurence Richard
- Service de Neurologie, Centre Hospitalier Universitaire (CHU) Limoges, F-87000 Limoges, France
| | - Paco Derouault
- Service de Bioinformatique, Centre Hospitalier Universitaire (CHU) Limoges, F-87000 Limoges, France
| | - Jean-Michel Vallat
- Service de Neurologie, Centre Hospitalier Universitaire (CHU) Limoges, F-87000 Limoges, France
| | - Karima Ghorab
- Service de Neurologie, Centre Hospitalier Universitaire (CHU) Limoges, F-87000 Limoges, France
| | - Corinne Magdelaine
- UR 20218, NeurIT, Faculty of Medicine and Pharmacy, University of Limoges, F-87000 Limoges, France
- Service de Biochimie et de Génétique Moléculaire, Centre Hospitalier Universitaire (CHU) Limoges, F-87000 Limoges, France
| | - Franck Sturtz
- UR 20218, NeurIT, Faculty of Medicine and Pharmacy, University of Limoges, F-87000 Limoges, France
- Service de Biochimie et de Génétique Moléculaire, Centre Hospitalier Universitaire (CHU) Limoges, F-87000 Limoges, France
| | - Frédéric Favreau
- UR 20218, NeurIT, Faculty of Medicine and Pharmacy, University of Limoges, F-87000 Limoges, France
- Service de Biochimie et de Génétique Moléculaire, Centre Hospitalier Universitaire (CHU) Limoges, F-87000 Limoges, France
| | - Anne-Sophie Lia
- UR 20218, NeurIT, Faculty of Medicine and Pharmacy, University of Limoges, F-87000 Limoges, France
- Service de Bioinformatique, Centre Hospitalier Universitaire (CHU) Limoges, F-87000 Limoges, France
- Service de Biochimie et de Génétique Moléculaire, Centre Hospitalier Universitaire (CHU) Limoges, F-87000 Limoges, France
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Yammine T, Aprahamian R, Souaid M, Salem N, Awwad J, Farra C. Novel SCN9A variant associated with congenital insensitivity to pain. Mol Biol Rep 2023:10.1007/s11033-023-08507-0. [PMID: 37231219 DOI: 10.1007/s11033-023-08507-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/04/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND Congenital insensitivity to pain (CIP) is a rare autosomal recessive syndrome characterized by lack of pain perception and a wide spectrum of clinical signs such as anosmia and hyposmia. Variants in SCN9A gene are associated with CIP. We here report on a Lebanese family with three CIP patients referred for genetic investigations. METHODS AND RESULTS Whole exome sequencing analysis revealed the presence of a novel nonsense, homozygous SCN9A pathogenic variant: SCN9A (NM_001365536.1): c.4633G > T, p.(Glu1545*) in exon 26. CONCLUSION Our three Lebanese patients had CIP, urinary incontinence and normal olfactory function while two of them also presented with osteoporosis and osteoarthritis; this association of features has not been previously reported in the literature. We hope that this report would contribute to a better delineation of the phenotypic spectrum associated with SCN9A pathogenic variants.
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Affiliation(s)
- Tony Yammine
- Medical Genetics Unit, Saint Joseph University, B.P.17-5208, Mar Mikhael, Beirut, 11042020, Lebanon
| | - Raffi Aprahamian
- Medical Genetics Unit, Saint Joseph University, B.P.17-5208, Mar Mikhael, Beirut, 11042020, Lebanon
| | - Mirna Souaid
- Medical Genetics Unit, Saint Joseph University, B.P.17-5208, Mar Mikhael, Beirut, 11042020, Lebanon
| | - Nabiha Salem
- Medical Genetics Unit, Saint Joseph University, B.P.17-5208, Mar Mikhael, Beirut, 11042020, Lebanon
| | - Johnny Awwad
- Obstetrics and Gynecology Department, American University of Beirut Medical Center, Beirut, Lebanon
| | - Chantal Farra
- Medical Genetics Unit, Saint Joseph University, B.P.17-5208, Mar Mikhael, Beirut, 11042020, Lebanon.
- Medical Genetics Department, Hotel Dieu de France, Beirut, Lebanon.
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Effects of Photodynamic Therapy on Nav1.7 Expression in Spinal Dorsal Root Ganglion Neurons. Curr Med Sci 2022; 42:1267-1272. [PMID: 36462133 DOI: 10.1007/s11596-022-2640-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 05/17/2022] [Indexed: 12/05/2022]
Abstract
OBJECTIVE The aim of this study was to examine the effects of photodynamic therapy (PDT) on the expression of Nav1.7 in spinal dorsal root ganglion (DRG) neurons. METHODS The primary DRG neurons from newborn SD rats were cultured. The cells were identified by neuron-specific enolase immunofluorescence staining. DRG neurons were divided into four groups: control group, photosensitizer group, laser group, and PDT group. The cell viability was detected by a cell counting kit-8 (CCK8) assay. qRT-PCR and Western blotting were used to determine the mRNA and protein expression levels of Nav1.7 in DRG neurons. RESULTS The purity of the cultured primary DRG neurons was greater than 90%. Compared with the control group, no significant change was found in the cell viability of the photosensitizer group, while the viability in the laser group and the PDT group was significantly reduced. The mRNA and protein expression levels of Nav1.7 were significantly greater in the laser group and the PDT group than in the control group. At the same time, the mRNA and protein expression levels of Nav1.7 were greater in the laser group than in the PDT group. CONCLUSION Both laser and PDT could upregulate the expression of Nav1.7 in DRG neurons, and the promoting effect might be related to the pain induced by clinical treatment. This study provides a research basis for the use of laser and PDT to treat pain. A better understanding of the relationship between Nav1.7 and PDT can help clinicians better manage PDT-related pain.
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Lischka A, Lassuthova P, Çakar A, Record CJ, Van Lent J, Baets J, Dohrn MF, Senderek J, Lampert A, Bennett DL, Wood JN, Timmerman V, Hornemann T, Auer-Grumbach M, Parman Y, Hübner CA, Elbracht M, Eggermann K, Geoffrey Woods C, Cox JJ, Reilly MM, Kurth I. Genetic pain loss disorders. Nat Rev Dis Primers 2022; 8:41. [PMID: 35710757 DOI: 10.1038/s41572-022-00365-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/10/2022] [Indexed: 01/05/2023]
Abstract
Genetic pain loss includes congenital insensitivity to pain (CIP), hereditary sensory neuropathies and, if autonomic nerves are involved, hereditary sensory and autonomic neuropathy (HSAN). This heterogeneous group of disorders highlights the essential role of nociception in protecting against tissue damage. Patients with genetic pain loss have recurrent injuries, burns and poorly healing wounds as disease hallmarks. CIP and HSAN are caused by pathogenic genetic variants in >20 genes that lead to developmental defects, neurodegeneration or altered neuronal excitability of peripheral damage-sensing neurons. These genetic variants lead to hyperactivity of sodium channels, disturbed haem metabolism, altered clathrin-mediated transport and impaired gene regulatory mechanisms affecting epigenetic marks, long non-coding RNAs and repetitive elements. Therapies for pain loss disorders are mainly symptomatic but the first targeted therapies are being tested. Conversely, chronic pain remains one of the greatest unresolved medical challenges, and the genes and mechanisms associated with pain loss offer new targets for analgesics. Given the progress that has been made, the coming years are promising both in terms of targeted treatments for pain loss disorders and the development of innovative pain medicines based on knowledge of these genetic diseases.
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Affiliation(s)
- Annette Lischka
- Institute of Human Genetics, Medical Faculty, Uniklinik RWTH Aachen University, Aachen, Germany
| | - Petra Lassuthova
- Department of Paediatric Neurology, 2nd Faculty of Medicine, Charles University in Prague and Motol University Hospital, Prague, Czech Republic
| | - Arman Çakar
- Neuromuscular Unit, Department of Neurology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Christopher J Record
- Centre for Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, UK
| | - Jonas Van Lent
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium.,Laboratory of Neuromuscular Pathology, Institute Born Bunge, Antwerp, Belgium
| | - Jonathan Baets
- Laboratory of Neuromuscular Pathology, Institute Born Bunge, Antwerp, Belgium.,Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.,Neuromuscular Reference Centre, Department of Neurology, Antwerp University Hospital, Antwerp, Belgium
| | - Maike F Dohrn
- Department of Neurology, Medical Faculty, Uniklinik RWTH Aachen University, Aachen, Germany.,Dr. John T. Macdonald Foundation, Department of Human Genetics and John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Jan Senderek
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-University, Munich, Germany
| | - Angelika Lampert
- Institute of Physiology, Medical Faculty, Uniklinik RWTH Aachen University, Aachen, Germany
| | - David L Bennett
- Nuffield Department of Clinical Neuroscience, Oxford University, Oxford, UK
| | - John N Wood
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London, London, UK
| | - Vincent Timmerman
- Peripheral Neuropathy Research Group, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium.,Laboratory of Neuromuscular Pathology, Institute Born Bunge, Antwerp, Belgium
| | - Thorsten Hornemann
- Department of Clinical Chemistry, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Michaela Auer-Grumbach
- Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria
| | - Yesim Parman
- Neuromuscular Unit, Department of Neurology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | | | - Miriam Elbracht
- Institute of Human Genetics, Medical Faculty, Uniklinik RWTH Aachen University, Aachen, Germany
| | - Katja Eggermann
- Institute of Human Genetics, Medical Faculty, Uniklinik RWTH Aachen University, Aachen, Germany
| | - C Geoffrey Woods
- Cambridge Institute for Medical Research, Keith Peters Building, Cambridge Biomedical Campus, Cambridge, UK
| | - James J Cox
- Molecular Nociception Group, Wolfson Institute for Biomedical Research, University College London, London, UK
| | - Mary M Reilly
- Centre for Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, UK
| | - Ingo Kurth
- Institute of Human Genetics, Medical Faculty, Uniklinik RWTH Aachen University, Aachen, Germany.
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8
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Beijer D, Dohrn MF, De Winter J, Fazal S, Cortese A, Stojkovic T, Fernández‐Eulate G, Remiche G, Gentile M, Van Coster R, Dufke C, Synofzik M, De Jonghe P, Züchner S, Baets J. RFC1
repeat expansions: A recurrent cause of sensory and autonomic neuropathy with cough and ataxia. Eur J Neurol 2022; 29:2156-2161. [DOI: 10.1111/ene.15310] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/20/2022] [Accepted: 02/26/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Danique Beijer
- Translational Neurosciences Faculty of Medicine and Health Sciences University of Antwerp Belgium
- Laboratory of Neuromuscular Pathology Institute Born‐Bunge University of Antwerp Belgium
- Dr. John T. Macdonald Foundation Department of Human Genetics and John P Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami Florida USA
| | - Maike F. Dohrn
- Dr. John T. Macdonald Foundation Department of Human Genetics and John P Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami Florida USA
- Department of Neurology Medical Faculty RWTH Aachen University Aachen Germany
| | - Jonathan De Winter
- Translational Neurosciences Faculty of Medicine and Health Sciences University of Antwerp Belgium
- Laboratory of Neuromuscular Pathology Institute Born‐Bunge University of Antwerp Belgium
- Neuromuscular Reference Centre Department of Neurology Antwerp University Hospital Belgium
| | - Sarah Fazal
- Dr. John T. Macdonald Foundation Department of Human Genetics and John P Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami Florida USA
| | - Andrea Cortese
- Department of Neuromuscular Disease UCL Queen Square Institute of Neurology and The National Hospital for Neurology London UK
- Department of Brain and Behavioral Sciences University of Pavia Pavia Italy
| | - Tanya Stojkovic
- Reference Center for Neuromuscular Diseases Neuro‐myology Department Pitié‐Salpêtrière University Hospital APHP Paris France
| | - Gorka Fernández‐Eulate
- Reference Center for Neuromuscular Diseases Neuro‐myology Department Pitié‐Salpêtrière University Hospital APHP Paris France
- Neuro‐Metabolism Unit Reference Center for Lysosomal Diseases Neurology Department Pitié‐Salpêtrière University Hospital APHP Paris France
| | - Gauthier Remiche
- Centre de Référence Neuromusculaire Department of Neurology Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
| | - Mattia Gentile
- Medical Genetic Unit Dept of Reproductive Pregnancy Risk ASL BARI Bari Italy
| | - Rudy Van Coster
- Department of Pediatrics Division of Pediatric Neurology and Metabolism University Hospital Ghent Ghent Belgium
| | - Claudia Dufke
- Institute of Medical Genetics and Applied Genomics University of Tuebingen Tuebingen Germany
- Center for Rare Diseases University of Tuebingen Tuebingen Germany
| | - Matthis Synofzik
- Division Translational Genomics of Neurodegenerative Diseases Hertie‐Institute for Clinical Brain Research and Center of Neurology University of Tübingen Tübingen Germany
- German Center for Neurodegenerative Diseases (DZNE) Tübingen Germany
| | - Peter De Jonghe
- Neuromuscular Reference Centre Department of Neurology Antwerp University Hospital Belgium
| | - Stephan Züchner
- Dr. John T. Macdonald Foundation Department of Human Genetics and John P Hussman Institute for Human Genomics University of Miami Miller School of Medicine Miami Florida USA
| | - Jonathan Baets
- Translational Neurosciences Faculty of Medicine and Health Sciences University of Antwerp Belgium
- Laboratory of Neuromuscular Pathology Institute Born‐Bunge University of Antwerp Belgium
- Neuromuscular Reference Centre Department of Neurology Antwerp University Hospital Belgium
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