المؤلفون: Inès Mademan, Lauren E. Drake, James Shorter, Kevin J. O'Donovan, Alice Flynn Ford, Andrzej Kochański, Matthew T. Wheeler, Kristof Van Schil, Nicolas Dubuisson, Richard J.L.F. Lemmers, Silvère M. van der Maarel, Jonathan Baets, Devon Bonner, J. Paul Taylor, Peter De Jonghe, Tine Deconinck, Jacinda B. Sampson, Charlotte M. Fare, Anahit Mehrabyan, Peter Van den Bergh, Nicol C. Voermans, Dagmara Kabzińska, Lin Guo, Steven Palmer, Danique Beijer, Hong Joo Kim

المساهمون: UCL - (SLuc) Service de neurologie, UCL - SSS/IREC/EDIN - Pôle d'endocrinologie, diabète et nutrition, UCL - (SLuc) Centre de référence neuromusculaire

المصدر: Jci Insight, 6, 14
JCI Insight, 6(14). AMER SOC CLINICAL INVESTIGATION INC
JCI Insight
JCI insight, Vol. 6, no.14, p. 1-18 (2021)
Jci Insight, 6
JCI insight

مصطلحات موضوعية: Adult, Male, Heterozygote, TIA1, Heterogeneous nuclear ribonucleoprotein, Adolescent, Heterogeneous Nuclear Ribonucleoprotein A1, DNA Mutational Analysis, Biology, Whole Exome Sequencing, Muscular Atrophy, Spinal, Young Adult, Stress granule, All institutes and research themes of the Radboud University Medical Center, Exome Sequencing, medicine, Genetics, Humans, Amyotrophic lateral sclerosis, Child, Genetic Association Studies, Amyotrophic Lateral Sclerosis, RNA, Translation (biology), General Medicine, Middle Aged, medicine.disease, Cell stress, Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3], Phenotype, Stress Granules, Cell biology, Pedigree, Chemistry, RNA splicing, Mutation, Female, Human medicine, Neurological disorders, Research Article, Neuroscience

الوصف: Mutations in HNRNPA1 encoding heterogeneous nuclear ribonucleoprotein (hnRNP) A1 are a rare cause of amyotrophic lateral sclerosis (ALS) and multisystem proteinopathy (MSP). hnRNPA1 is part of the group of RNA-binding proteins (RBPs) that assemble with RNA to form RNPs. hnRNPs are concentrated in the nucleus and function in pre-mRNA splicing, mRNA stability, and the regulation of transcription and translation. During stress, hnRNPs, mRNA, and other RBPs condense in the cytoplasm to form stress granules (SGs). SGs are implicated in the pathogenesis of (neuro-)degenerative diseases, including ALS and inclusion body myopathy (IBM). Mutations in RBPs that affect SG biology, including FUS, TDP-43, hnRNPA1, hnRNPA2B1, and TIA1, underlie ALS, IBM, and other neurodegenerative diseases. Here, we characterize 4 potentially novel HNRNPA1 mutations (yielding 3 protein variants: *321Eext*6, *321Qext*6, and G304Nfs*3) and 2 known HNRNPA1 mutations (P288A and D262V), previously connected to ALS and MSP, in a broad spectrum of patients with hereditary motor neuropathy, ALS, and myopathy. We establish that the mutations can have different effects on hnRNPA1 fibrillization, liquid-liquid phase separation, and SG dynamics. P288A accelerated fibrillization and decelerated SG disassembly, whereas *321Eext*6 had no effect on fibrillization but decelerated SG disassembly. By contrast, G304Nfs*3 decelerated fibrillization and impaired liquid phase separation. Our findings suggest different underlying pathomechanisms for HNRNPA1 mutations with a possible link to clinical phenotypes.

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f44f7da41fba7d5d08ec3934beb42a6Test
https://hdl.handle.net/1887/3214438Test

المؤلفون: Ana Töpf, Katherine Johnson, Adam Bates, Lauren Phillips, Katherine R. Chao, Eleina M. England, Kristen M. Laricchia, Thomas Mullen, Elise Valkanas, Liwen Xu, Marta Bertoli, Alison Blain, Ana B. Casasús, Jennifer Duff, Magdalena Mroczek, Sabine Specht, Monkol Lek, Monica Ensini, Daniel G. MacArthur, Ela Akay, Jorge Alonso-Pérez, Jonathan Baets, Nina Barisic, Alexandra Bastian, Sabine Borell, Teodora Chamova, Kristl Claeys, Jaume Colomer, Sandra Coppens, Nicolas Deconinck, Willem de Ridder, Jordi Díaz-Manera, Cristina Domínguez-González, Alexis Duncan, Hacer Durmus, Nagia A. Fahmy, Maria Elena Farrugia, Roberto Fernández-Torrón, Lidia Gonzalez-Quereda, Jana Haberlova, Maja von der Hagen, Andreas Hahn, Antonia Jakovčević, Ivonne Jerico Pascual, Solange Kapetanovic, Viktorija Kenina, Janbernd Kirschner, Andrea Klein, Heike Kölbel, Anna Kostera-Pruszczyk, Richa Kulshrestha, Jaana Lähdetie, Mahsa Layegh, Cheryl Longman, Adolfo López de Munain, Wolfgang Loscher, Anna Lusakowska, Paul Maddison, Armelle Magot, Anirban Majumdar, Pilar Martí, Amaia Martínez Arroyo, Radim Mazanec, Sandra Mercier, Tiziana Mongini, Nuria Muelas, Andrés Nascimento, Shahriar Nafissi, Shirin Omidi, Carlos Ortez, Stéphanie Paquay, Yann Pereon, Stojan Perić, Valentina Ponzalino, Vidosava Rakočević Stojanović, Gauthier Remiche, Aida Rodríguez Sainz, Sabine Rudnik, Iciar Sanchez Albisua, Manuela Santos, Ulrike Schara, Andriy Shatillo, Jadranka Sertić, Ulrich Stephani, Sonja Strang-Karlsson, Yves Sznajer, Ani Tanev, Ivailo Tournev, Peter Van den Bergh, Vinciane Van Parijs, Juan Vílchez, Katharina Vill, John Vissing, Carina Wallgren-Pettersson, Julia Wanschitz, Tracey Willis, Nanna Witting, Miren Zulaica, Volker Straub

المساهمون: MYO-SEQ Consortium, HUSLAB, HUS Children and Adolescents, Clinicum, Medicum, Claeys, Kristl

المصدر: Genetics in medicine
Genetics in Medicine
GENETICS IN MEDICINE
r-IIB SANT PAU. Repositorio Institucional de Producción Científica del Instituto de Investigación Biomédica Sant Pau
instname

مصطلحات موضوعية: 0301 basic medicine, targeted exome analysis, Neuromuscular disease, Medizin, Anoctamins, 030105 genetics & heredity, Bioinformatics, 3124 Neurology and psychiatry, DNA sequencing, Article, 03 medical and health sciences, genetic diagnosis, limb-girdle weakness, neuromuscular disease, next-generation sequencing, 3123 Gynaecology and paediatrics, Exome Sequencing, Medicine, Humans, Exome, Gene, Genetics (clinical), Exome sequencing, SGCA, RYR1, Genetic heterogeneity, business.industry, Sciences bio-médicales et agricoles, medicine.disease, Phenotype, 3. Good health, 030104 developmental biology, Muscular Dystrophies, Limb-Girdle, Glucosyltransferases, Human medicine, business

الوصف: Several hundred genetic muscle diseases have been described, all of which are rare. Their clinical and genetic heterogeneity means that a genetic diagnosis is challenging. We established an international consortium, MYO-SEQ, to aid the work-ups of muscle disease patients and to better understand disease etiology.
info:eu-repo/semantics/published

وصف الملف: 1 full-text file(s): application/pdf; Print-Electronic

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5eb0b77bdff412d8ddab3c132a95c157Test
https://repository.uantwerpen.be/docstore/d:irua:4405Test

المؤلفون: Shirin Jamal-Omidi, L. Phillips, Anna Kostera-Pruszczyk, Nanna Witting, Miren Zulaica Ijurco, Maja von der Hagen, Ana Töpf, Kristl G. Claeys, Jaume Colomer, Monkol Lek, Shahriar Nafissi, L. Xu, Daniel G. MacArthur, Elise Valkanas, Jonathan Baets, Anna Potulska-Chromik, Volker Straub, Anna Łusakowska, Peter Van den Bergh, Sonja Strang-Karlsson, Thomas E. Mullen, John Vissing, Marta Bertoli, Juan Bautista Espinal Valencia, Carina Wallgren-Pettersson, Willem De Ridder, Hacer Durmus, Tracey Willis, Katherine Johnson, Andreas Hahn, Roberto Fernández-Torrón, Nicolas Deconinck

المساهمون: UCL - (SLuc) Service de neurologie, UCL - SSS/IONS/NEUR - Clinical Neuroscience, Medicum, Department of Medical and Clinical Genetics, University of Helsinki, Clinicum, Children's Hospital, HUS Children and Adolescents

المصدر: Skeletal Muscle, Vol. 8, no. 1, p. 23 [1-12] (2018)
Skeletal muscle 8(1), 23 (2018). doi:10.1186/s13395-018-0170-1
Skeletal Muscle
Johnson, K, Bertoli, M, Phillips, L, Töpf, A, Van den Bergh, P, Vissing, J, Witting, N, Nafissi, S, Jamal-Omidi, S, Łusakowska, A, Kostera-Pruszczyk, A, Potulska-Chromik, A, Deconinck, N, Wallgren-Pettersson, C, Strang-Karlsson, S, Colomer, J, Claeys, K G, De Ridder, W, Baets, J, von der Hagen, M, Fernández-Torrón, R, Zulaica Ijurco, M, Espinal Valencia, J B, Hahn, A, Durmus, H, Willis, T, Xu, L, Valkanas, E, Mullen, T E, Lek, M, MacArthur, D G & Straub, V 2018, ' Detection of variants in dystroglycanopathy-associated genes through the application of targeted whole-exome sequencing analysis to a large cohort of patients with unexplained limb-girdle muscle weakness ', Skeletal Muscle, vol. 8, 23 . https://doi.org/10.1186/s13395-018-0170-1Test
SKELET MUSCLE
r-FSJD. Repositorio Institucional de Producción Científica de la Fundació Sant Joan de Déu
instname
Skeletal Muscle, 8 (1
r-FSJD: Repositorio Institucional de Producción Científica de la Fundació Sant Joan de Déu
Fundació Sant Joan de Déu
Skeletal Muscle, Vol 8, Iss 1, Pp 1-12 (2018)
Skeletal muscle

مصطلحات موضوعية: 0301 basic medicine, Male, lcsh:Diseases of the musculoskeletal system, Glycosylation, Whole Exome Sequencing/methods, Muscle Proteins, Hygiène et médecine sportives, Bioinformatics, WALKER-WARBURG-SYNDROME, 0302 clinical medicine, Orthopedics and Sports Medicine, Limb-girdle muscle weakness, Child, Dystroglycans, Exome sequencing, Muscle Proteins/genetics, Aged, 80 and over, Homozygote, Middle Aged, Dystroglycanopathies, 3. Good health, Whole-exome sequencing, medicine.anatomical_structure, Phenotype, Dystroglycans/metabolism, Child, Preschool, Orthopédie, Congenital muscular dystrophy, SKELETAL-MUSCLE, Female, medicine.symptom, GLYCOPROTEIN COMPLEX, Life Sciences & Biomedicine, ALPHA-DYSTROGLYCAN, Adult, Heterozygote, Proximal muscle weakness, Adolescent, EYE-BRAIN DISEASE, 03 medical and health sciences, Young Adult, Glycoprotein complex, Exome Sequencing, medicine, Humans, ABNORMAL GLYCOSYLATION, Genetic Predisposition to Disease, Walker–Warburg syndrome, Biology, Molecular Biology, POMT2 MUTATIONS, Aged, Science & Technology, Genetic heterogeneity, business.industry, Research, Muscular Dystrophies, Limb-Girdle/genetics, Muscle weakness, Skeletal muscle, Genetic Variation, Cell Biology, medicine.disease, Cancérologie, 030104 developmental biology, Muscular Dystrophies, Limb-Girdle, Mutation, CONGENITAL MUSCULAR-DYSTROPHY, 1182 Biochemistry, cell and molecular biology, Biologie cellulaire, Human medicine, DEFECTIVE GLYCOSYLATION, 3111 Biomedicine, lcsh:RC925-935, business, 030217 neurology & neurosurgery, MENTAL-RETARDATION

الوصف: Background: Dystroglycanopathies are a clinically and genetically heterogeneous group of disorders that are typically characterised by limb-girdle muscle weakness. Mutations in 18 different genes have been associated with dystroglycanopathies, the encoded proteins of which typically modulate the binding of α-dystroglycan to extracellular matrix ligands by altering its glycosylation. This results in a disruption of the structural integrity of the myocyte, ultimately leading to muscle degeneration. Methods: Deep phenotypic information was gathered using the PhenoTips online software for 1001 patients with unexplained limb-girdle muscle weakness from 43 different centres across 21 European and Middle Eastern countries. Whole-exome sequencing with at least 250ng DNA was completed using an Illumina exome capture and a 38Mb baited target. Genes known to be associated with dystroglycanopathies were analysed for disease-causing variants. Results: Suspected pathogenic variants were detected in DPM3, ISPD, POMT1 and FKTN in one patient each, in POMK in two patients, in GMPPB in three patients, in FKRP in eight patients and in POMT2 in ten patients. This indicated a frequency of 2.7% for the disease group within the cohort of 1001 patients with unexplained limb-girdle muscle weakness. The phenotypes of the 27 patients were highly variable, yet with a fundamental presentation of proximal muscle weakness and elevated serum creatine kinase. Conclusions: Overall, we have identified 27 patients with suspected pathogenic variants in dystroglycanopathy-associated genes. We present evidence for the genetic and phenotypic diversity of the dystroglycanopathies as a disease group, while also highlighting the advantage of incorporating next-generation sequencing into the diagnostic pathway of rare diseases.
SCOPUS: ar.j
info:eu-repo/semantics/published

وصف الملف: application/pdf; Electronic; 1 full-text file(s): application/pdf; pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed866fead030563b4d9ea59130e00061Test
https://hdl.handle.net/2078.1/220057Test

المؤلفون: Antje Bornemann, Lukas J. Schnitzler, Christian Hartmann, Peter De Jonghe, Jens Reimann, Peter Van den Bergh, Andreas Meisel, Jörg B. Schulz, Jens A. Petersen, Aleksandra Nadaj-Pakleza, Joachim Weis, Philip Van Damme, Kristl G. Claeys, Andreas Ferbert, Elisabeth J. Rushing, Tobias Schreckenbach, Thomas Tousseyn, Jean-Jacques Martin, Werner Stenzel, Dietmar Rudolf Thal, Susanne Petri

المساهمون: UCL - SSS/IONS/NEUR - Clinical Neuroscience, UCL - (SLuc) Service de neurologie, University of Zurich, Claeys, Kristl G

المصدر: Orphanet Journal of Rare Diseases, Vol. 12, no.1, p. 86 (2017)
Orphanet Journal of Rare Diseases, Vol. 12, no. 1, p. 86 [1-12] (2017)
Orphanet Journal of Rare Diseases
Orphanet journal of rare diseases 12(1), 86 (2017). doi:10.1186/s13023-017-0640-2
Orphanet Journal of Rare Diseases, Vol 12, Iss 1, Pp 1-12 (2017)
Orphanet journal of rare diseases

مصطلحات موضوعية: HIV-NM, 2716 Genetics (clinical), Weakness, Paraproteinemia, Pathology, medicine.medical_specialty, HIV-associated nemaline myopathy, lcsh:Medicine, 610 Medicine & health, Late onset, Review, Muscle disorder, Myopathies, Nemaline, SLONM, 03 medical and health sciences, 0302 clinical medicine, Nemaline myopathy, Atrophy, medicine, 2736 Pharmacology (medical), Animals, Humans, Pharmacology (medical), ddc:610, Age of Onset, Myopathy, Genetics (clinical), Immunosuppression Therapy, Muscle biopsy, medicine.diagnostic_test, business.industry, Muscles, lcsh:R, Monoclonal gammopathy, High-Throughput Nucleotide Sequencing, General Medicine, medicine.disease, 10040 Clinic for Neurology, 030220 oncology & carcinogenesis, NGS, Immunology, MGUS, Human medicine, medicine.symptom, business, 030217 neurology & neurosurgery, Stem Cell Transplantation

الوصف: Orphanet journal of rare diseases : OJRD 12(1), 86 (2017). doi:10.1186/s13023-017-0640-2
Published by BioMed Central, London

وصف الملف: Electronic; application/pdf; s13023-017-0640-2.pdf - application/pdf; pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db244b832f5e53bcd295a37183776f6bTest
https://hdl.handle.net/2078.1/185606Test

المؤلفون: Georges Mer, Kaori Hojo, Shana L. Merrill, Jessica Deleon, Peter Van den Bergh, Maria Victoria Botuyan, Noah Beadell, Inès Mademan, Christopher J. Klein, Gregory A. Worrell, Yanhong Wu, Henry Houlden, Nicole McGrath, Jan Senderek, Gordon Smith, Jonathan Baets, Xiaohui Duan, Mary M. Reilly, Julie Khoury, Murray Grossman, Joachim Weis, Matilde Laura, William W. Seeley, Steven S. Scherer, Peter De Jonghe, Yo Tsen Liu, Peter J. Dyck

المصدر: Brain

مصطلحات موضوعية: Adult, DNA (Cytosine-5-)-Methyltransferase 1, Male, Bioinformatics, medicine.disease_cause, environment and public health, Protein Structure, Secondary, 03 medical and health sciences, 0302 clinical medicine, Autosomal dominant cerebellar ataxia, Hereditary sensory and autonomic neuropathy, medicine, Autophagy, Humans, DNA (Cytosine-5-)-Methyltransferases, Cognitive decline, Hereditary Sensory and Autonomic Neuropathies, Cognitive deficit, Cellular localization, 030304 developmental biology, Aged, Genetics, 0303 health sciences, Mutation, Cerebellar ataxia, urogenital system, Original Articles, Middle Aged, medicine.disease, 3. Good health, Pedigree, HEK293 Cells, embryonic structures, Female, Neurology (clinical), Human medicine, medicine.symptom, Nervous System Diseases, Psychology, 030217 neurology & neurosurgery, Narcolepsy

الوصف: Baets et al. expand the clinical spectrum of hereditary sensory and autonomic neuropathy type 1E (HSAN1E) by studying nine newly identified kinships, and reveal a potential pathogenic mechanism for causative DNMT1 mutations. Mutant DNMT1 proteins form aggresomes in the cytoplasm, suggesting that aggresome-induced autophagy may contribute to disease pathogenesis.We report a broader than previously appreciated clinical spectrum for hereditary sensory and autonomic neuropathy type 1E (HSAN1E) and a potential pathogenic mechanism for DNA methyltransferase (DNMT1) mutations. The clinical presentations and genetic characteristics of nine newly identified HSAN1E kinships (45 affected subjects) were investigated. Five novel mutations of DNMT1 were discovered; p.C353F, p.T481P, p.P491L, p.Y524D and p.I531N, all within the target-sequence domain, and two mutations (p.T481P, p.P491L) arising de novo. Recently, HSAN1E has been suggested as an allelic disorder of autosomal dominant cerebellar ataxia, deafness and narcolepsy. Our results indicate that all the mutations causal for HSAN1E are located in the middle part or N-terminus end of the TS domain, whereas all the mutations causal for autosomal dominant cerebellar ataxia, deafness and narcolepsy are located in the C-terminus end of the TS domain. The impact of the seven causal mutations in this cohort was studied by cellular localization experiments. The binding efficiency of the mutant DNMT proteins at the replication foci and heterochromatin were evaluated. Phenotypic characterizations included electromyography, brain magnetic resonance and nuclear imaging, electroencephalography, sural nerve biopsies, sleep evaluation and neuropsychometric testing. The average survival of HSAN1E was 53.6 years. [standard deviation = 7.7, range 43-75 years], and mean onset age was 37.7 years. (standard deviation = 8.6, range 18-51 years). Expanded phenotypes include myoclonic seizures, auditory or visual hallucinations, and renal failure. Hypersomnia, rapid eye movement sleep disorder and/or narcolepsy were identified in 11 subjects. Global brain atrophy was found in 12 of 14 who had brain MRI. EEGs showed low frequency (delta waves) frontal-predominant abnormality in five of six patients. Marked variability in cognitive deficits was observed, but the majority of patients (89%) developed significant cognitive deficit by the age of 45 years. Cognitive function decline often started with personality changes and psychiatric manifestations. A triad of hearing loss, sensory neuropathy and cognitive decline remains as the stereotypic presentation of HSAN1E. Moreover, we show that mutant DNMT1 proteins translocate to the cytoplasm and are prone to form aggresomes while losing their binding ability to heterochromatin during the G2 cell cycle. Our results suggest mutations in DNMT1 result in imbalanced protein homeostasis through aggresome-induced autophagy. This mechanism may explain why mutations in the sole DNA maintenance methyltransferase lead to selective central and peripheral neurodegeneration.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98f4def148fad12e85799ea261ea18ddTest
https://pubmed.ncbi.nlm.nih.gov/25678562Test

المؤلفون: Peter Van den Bergh, Sabrina Sacconi, Andreas Ferbert, Matthias Vorgerd, Markus Bergmann, Jörg B. Schulz, Joachim Weis, Jean-Jacques Martin, Marcus Deschauer, J Elisa Bach, Peter De Jonghe, Jan Bürmann, Wolfram Kress, Kristl G. Claeys, Eva Neuen-Jacob, J. Michael Schröder, Anna-Lena Semmler, Rudolf A. Kley, Claus Liebe, Roland Anderheiden, Oliver J. Müller

المساهمون: Institut de Biologie Valrose (IBV), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), UCL - SSS/IONS/NEUR - Clinical Neuroscience, UCL - (SLuc) Service de neurologie

المصدر: Orphanet Journal of Rare Diseases
Orphanet Journal of Rare Diseases, BioMed Central, 2014, 9 (1), pp.121
Orphanet Journal of Rare Diseases, Vol. 9, p. 121 [1-13] (2014)
Orphanet journal of rare diseases 9(1), 121 (2014). doi:10.1186/s13023-014-0121-9
Orphanet journal of rare diseases
Orphanet journal of rare diseases 9, 121 (2014). doi:10.1186/s13023-014-0121-9

مصطلحات موضوعية: Male, Pathology, bcl-2 associated athanogene protein 3, 610 Medical sciences Medicine, 0302 clinical medicine, Genetics(clinical), Pharmacology (medical), FLNC, [SDV.BDD]Life Sciences [q-bio]/Development Biology, Genetics (clinical), Genetics, Medicine(all), 0303 health sciences, medicine.diagnostic_test, High-Throughput Nucleotide Sequencing, General Medicine, Middle Aged, Phenotype, Pedigree, 3. Good health, Mutation (genetic algorithm), Female, Protein aggregation, Polyneuropathy, Myopathies, Structural, Congenital, Adult, medicine.medical_specialty, Adolescent, Next generation sequencing, Biology, MFM, Hearing impairment, Young Adult, 03 medical and health sciences, medicine, Humans, ddc:610, Muscle, Skeletal, Gene, Adaptor Proteins, Signal Transducing, Aged, 030304 developmental biology, Nerve biopsy, Genetic heterogeneity, Research, medicine.disease, Human genetics, Mutation, Human medicine, Apoptosis Regulatory Proteins, 030217 neurology & neurosurgery

الوصف: Background Myofibrillar myopathies (MFM) are a group of phenotypically and genetically heterogeneous neuromuscular disorders, which are characterized by protein aggregations in muscle fibres and can be associated with multisystemic involvement. Methods We screened a large cohort of 38 index patients with MFM for mutations in the nine thus far known causative genes using Sanger and next generation sequencing (NGS). We studied the clinical and histopathological characteristics in 38 index patients and five additional relatives (n = 43) and particularly focused on the associated multisystemic symptoms. Results We identified 14 heterozygous mutations (diagnostic yield of 37%), among them the novel p.Pro209Gln mutation in the BAG3 gene, which was associated with onset in adulthood, a mild phenotype and an axonal sensorimotor polyneuropathy, in the absence of giant axons at the nerve biopsy. We revealed several novel clinical phenotypes and unusual multisystemic presentations with previously described mutations: hearing impairment with a FLNC mutation, dysphonia with a mutation in DES and the first patient with a FLNC mutation presenting respiratory insufficiency as the initial symptom. Moreover, we described for the first time respiratory insufficiency occurring in a patient with the p.Gly154Ser mutation in CRYAB. Interestingly, we detected a polyneuropathy in 28% of the MFM patients, including a BAG3 and a MYOT case, and hearing impairment in 13%, including one patient with a FLNC mutation and two with mutations in the DES gene. In four index patients with a mutation in one of the MFM genes, typical histological findings were only identified at the ultrastructural level (29%). Conclusions We conclude that extraskeletal symptoms frequently occur in MFM, particularly cardiac and respiratory involvement, polyneuropathy and/or deafness. BAG3 mutations should be considered even in cases with a mild phenotype or an adult onset. We identified a genetic defect in one of the known genes in less than half of the MFM patients, indicating that more causative genes are still to be found. Next generation sequencing techniques should be helpful in achieving this aim.

وصف الملف: application/pdf; pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb47c88657f1d9f8b9fc70a4ba9888e7Test
https://hal.archives-ouvertes.fr/hal-01117408Test

المؤلفون: Nicol C. Voermans, Thierry Kuntzer, Michel Delforge, Marie-Christiane Vekemans, Olivier Benveniste, Monique C. Minnema, Peter Van den Bergh, Véronique Leblond, Norma B. Romero, Jan Novy, Thomas Pabst, Françoise Bouhour, Henk M. Lokhorst, Bruno Eymard, Wouter Meersseman, Baziel G.M. van Engelen, Martin Lammens

المصدر: Neurology
Neurology, 83, 23, pp. 2133-9
Voermans, Nicol C; Benveniste, Olivier; Minnema, Monique C; Lokhorst, Henk; Lammens, Martin; Meersseman, Wouter; Delforge, Michel; Kuntzer, Thierry; Novy, Jan; Pabst, Thomas; Bouhour, Françoise; Romero, Norma; Leblond, Veronique; Bergh, Peter van den; Vekemans, Marie-Christiane; Engelen, Baziel G van; Eymard, Bruno (2014). Sporadic late-onset nemaline myopathy with MGUS: long-term follow-up after melphalan and SCT. Neurology, 83(23), pp. 2133-2139. Lippincott Williams & Wilkins 10.1212/WNL.0000000000001047 <http://dx.doi.org/10.1212/WNL.0000000000001047Test>
ResearcherID
Europe PubMed Central
Neurology, 83, 2133-9

مصطلحات موضوعية: Melphalan, Adult, Male, medicine.medical_specialty, Paraproteinemias, Late onset, 610 Medicine & health, Myopathies, Nemaline, Gastroenterology, Transplantation, Autologous, Autologous stem-cell transplantation, Nemaline myopathy, immune system diseases, Internal medicine, hemic and lymphatic diseases, Medicine, Humans, Age of Onset, Myopathy, Retrospective Studies, business.industry, Muscle weakness, medicine.disease, Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3], Hematologic Response, 3. Good health, Surgery, Treatment Outcome, Female, Neurology (clinical), Human medicine, medicine.symptom, business, Case series, medicine.drug, Follow-Up Studies, Stem Cell Transplantation

الوصف: Item does not contain fulltext OBJECTIVE: Sporadic late-onset nemaline myopathy (SLONM) is a rare, late-onset myopathy that progresses subacutely. If associated with a monoclonal gammopathy of unknown significance (MGUS), the outcome is unfavorable: the majority of these patients die within 1 to 5 years of respiratory failure. This study aims to qualitatively assess the long-term treatment effect of high-dose melphalan (HDM) followed by autologous stem cell transplantation (SCT) in a series of 8 patients with SLONM-MGUS. METHODS: We performed a retrospective case series study (n = 8) on the long-term (1-8 years) treatment effect of HDM followed by autologous SCT (HDM-SCT) on survival, muscle strength, and functional capacities. RESULTS: Seven patients showed a lasting moderate-good clinical response, 2 of them after the second HDM-SCT. All of them had a complete, a very good partial, or a partial hematologic response. One patient showed no clinical or hematologic response and died. CONCLUSIONS: This case series shows the positive effect of HDM-SCT in this rare disorder. Factors that may portend an unfavorable outcome are a long disease course before the hematologic treatment and a poor hematologic response. Age at onset, level and type of M protein (kappa vs lambda), and severity of muscle weakness were not associated with a specific outcome. CLASSIFICATION OF EVIDENCE: This study provides Class IV evidence that for patients with SLONM-MGUS, HDM-SCT increases the probability of survival and functional improvement.

وصف الملف: pdf; application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8519e93627827a67a1c17d2569a0441dTest
https://hdl.handle.net/10067/1221760151162165141Test

المؤلفون: Maike F. Dohrn, Matthias Vorgerd, Joachim Weis, Jan De Bleecker, Peter Van den Bergh, Kristl G. Claeys, Jörg B. Schulz, Jean-Jacques Martin, Katrin Hinderhofer, Andreas Ferbert, Christoph Röcken, J. Michael Schröder

المساهمون: UCL - SSS/IONS/NEUR - Clinical Neuroscience, UCL - (SLuc) Service de neurologie

المصدر: Journal of Neurology : official journal of the European Neurological Society, Vol. 260, no.12, p. 3093-3108 (2013)
Journal of neurology

مصطلحات موضوعية: Tafamidis, Male, Pathology, medicine.medical_specialty, endocrine system, Late onset, chemistry.chemical_compound, Medicine, Humans, Ataxic Gait, Age of Onset, Aged, Aged, 80 and over, Amyloid Neuropathies, Familial, biology, business.industry, Autosomal dominant trait, nutritional and metabolic diseases, medicine.disease, Pedigree, Amyloid Neuropathy, Transthyretin, Neurology, chemistry, biology.protein, Disease Progression, Female, Neurology (clinical), Human medicine, Age of onset, business, Polyneuropathy

الوصف: Familial amyloid polyneuropathy (FAP) is a progressive systemic autosomal dominant disease caused by pathogenic mutations in the transthyretin (TTR) gene. We studied clinical, electrophysiological, histopathological, and genetic characteristics in 15 (13 late-onset and two early-onset) patients belonging to 14 families with polyneuropathy and mutations in TTR. In comparison, we analysed the features of nine unrelated patients with an idiopathic polyneuropathy, in whom TTR mutations have been excluded. Disease occurrence was familial in 36 % of the patients with TTR-associated polyneuropathy and the late-onset type was observed in 86 % (mean age at onset 65.5 years). Clinically, all late-onset TTR-mutant patients presented with distal weakness, pansensory loss, absence of deep tendon reflexes, and sensorimotor hand involvement. Afferent-ataxic gait was present in 92 % leading to wheelchair dependence in 60 % after a mean duration of 4.6 years. Autonomic involvement was observed in 60 %, and ankle edema in 92 %. The sensorimotor polyneuropathy was from an axonal type in 82 %, demyelinating or mixed type in 9 % each. Compared to the TTR-unmutated idiopathic polyneuropathy patients, we identified rapid progression, early ambulatory loss, and autonomic disturbances, associated with a severe polyneuropathy as red flags for TTRFAP. In 18 % of the late-onset TTR-FAP patients, no amyloid was found in nerve biopsies. Further diagnostic pitfalls were unspecific electrophysiology, and coincident diabetes mellitus (23 %) or monoclonal gammopathy (7 %). We conclude that a rapid disease course, severely ataxic gait, hand involvement, and autonomic dysfunction are diagnostic hallmarks of late-onset TTRFAP. Genetic analysis should be performed even when amyloid deposits are lacking or when polyneuropathy-causing comorbidities are concomitant.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfd25c49dcccba3278d8c90be0daa5f6Test
https://pubmed.ncbi.nlm.nih.gov/24101130Test

المؤلفون: Haluk Topaloglu, Els De Vriendt, Argirios Dinopoulos, Esra Battaloglu, Kim Van Hoorenbeeck, Berten Ceulemans, Vincent Timmerman, Patrick Van Bogaert, Jonathan Baets, A. Pou-Serradell, Michaela Auer-Grumbach, Albena Jordanova, Yesim Parman, Peter Van den Bergh, Ricardo E. Madrid, Andrzej Kochański, Magdalena Zimoń, Dagmara Kabzińska, K. Peeters, Laetitia Yperzeele, Geoffrey P. Miller, Gian Maria Fabrizi, Günther Bernert, Birdal Bilir, Peter De Jonghe, Ronen Spiegel, Fernand Pauly, Satu-Leena Sallinen, Tine Deconinck

المساهمون: Çocuk Sağlığı ve Hastalıkları, UCL - SSS/IONS/NEUR - Clinical Neuroscience, UCL - (SLuc) Service de neurologie

المصدر: Brain, 134 (Pt 9
Brain
Brain : a journal of neurology, Vol. 134, no. 9, p. 2664-2676 (2011)

مصطلحات موضوعية: Génétique clinique, genotype-phenotype correlations, DNA Mutational Analysis, Disease, Charcot–Marie–Tooth disease, Dejerine-Sottas neuropathy, medicine.disease_cause, Bioinformatics, Cohort Studies, 0302 clinical medicine, Charcot-Marie-Tooth Disease, SH3TC2, Gene duplication, Age of Onset, Child, Genetics, 0303 health sciences, Mutation, early onset hereditary neuropathies, congenital hypomyelinating neuropathy, Dejerine–Sottas neuropathy, genotype–phenotype correlations, Middle Aged, Hypotonia, Phenotype, Child, Preschool, Hereditary Sensory and Motor Neuropathy -- genetics -- pathology -- physiopathology, medicine.symptom, Adult, Adolescent, Charcot-Marie-Tooth disease, 03 medical and health sciences, Young Adult, Neurologie, medicine, Humans, 030304 developmental biology, Aged, Genetic heterogeneity, business.industry, Infant, Original Articles, medicine.disease, Peripheral neuropathy, Charcot-Marie-Tooth Disease -- genetics -- pathology -- physiopathology, Neurology (clinical), Human medicine, Age of onset, business, Hereditary Sensory and Motor Neuropathy, 030217 neurology & neurosurgery

الوصف: Early onset hereditary motor and sensory neuropathies are rare disorders encompassing congenital hypomyelinating neuropathy with disease onset in the direct post-natal period and Dejerine-Sottas neuropathy starting in infancy. The clinical spectrum, however, reaches beyond the boundaries of these two historically defined disease entities. De novo dominant mutations in PMP22, MPZ and EGR2 are known to be a typical cause of very early onset hereditary neuropathies. In addition, mutations in several other dominant and recessive genes for Charcot-Marie-Tooth disease may lead to similar phenotypes. To estimate mutation frequencies and to gain detailed insights into the genetic and phenotypic heterogeneity of early onset hereditary neuropathies, we selected a heterogeneous cohort of 77 unrelated patients who presented with symptoms of peripheral neuropathy within the first year of life. The majority of these patients were isolated in their family. We performed systematic mutation screening by means of direct sequencing of the coding regions of 11 genes: MFN2, PMP22, MPZ, EGR2, GDAP1, NEFL, FGD4, MTMR2, PRX, SBF2 and SH3TC2. In addition, screening for the Charcot-Marie-Tooth type 1A duplication on chromosome 17p11.2-12 was performed. In 35 patients (45%), mutations were identified. Mutations in MPZ, PMP22 and EGR2 were found most frequently in patients presenting with early hypotonia and breathing difficulties. The recessive genes FGD4, PRX, MTMR2, SBF2, SH3TC2 and GDAP1 were mutated in patients presenting with early foot deformities and variable delay in motor milestones after an uneventful neonatal period. Several patients displaying congenital foot deformities but an otherwise normal early development carried the Charcot-Marie-Tooth type 1A duplication. This study clearly illustrates the genetic heterogeneity underlying hereditary neuropathies with infantile onset.
Journal Article
Research Support, Non-U.S. Gov't
SCOPUS: ar.j
info:eu-repo/semantics/published

وصف الملف: 2 full-text file(s): application/pdf; application/pdf; text/plain

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a38300dcc0daaeeed746ea51631b2759Test
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/108357Test