المؤلفون: Adam Jackson, Sheng-Jia Lin, Elizabeth A. Jones, Kate E. Chandler, David Orr, Celia Moss, Zahra Haider, Gavin Ryan, Simon Holden, Mike Harrison, Nigel Burrows, Wendy D. Jones, Mary Loveless, Cassidy Petree, Helen Stewart, Karen Low, Deirdre Donnelly, Simon Lovell, Konstantina Drosou, Gaurav K. Varshney, Siddharth Banka, J.C. Ambrose, P. Arumugam, R. Bevers, M. Bleda, F. Boardman-Pretty, C.R. Boustred, H. Brittain, M.A. Brown, M.J. Caulfield, G.C. Chan, A. Giess, J.N. Griffin, A. Hamblin, S. Henderson, T.J.P. Hubbard, R. Jackson, L.J. Jones, D. Kasperaviciute, M. Kayikci, A. Kousathanas, L. Lahnstein, A. Lakey, S.E.A. Leigh, I.U.S. Leong, F.J. Lopez, F. Maleady-Crowe, M. McEntagart, F. Minneci, J. Mitchell, L. Moutsianas, M. Mueller, N. Murugaesu, A.C. Need, P. O‘Donovan, C.A. Odhams, C. Patch, D. Perez-Gil, M.B. Pereira, J. Pullinger, T. Rahim, A. Rendon, T. Rogers, K. Savage, K. Sawant, R.H. Scott, A. Siddiq, A. Sieghart, S.C. Smith, A. Sosinsky, A. Stuckey, M. Tanguy, A.L. Taylor Tavares, E.R.A. Thomas, S.R. Thompson, A. Tucci, M.J. Welland, E. Williams, K. Witkowska, S.M. Wood, M. Zarowiecki, Olaf Riess, Tobias B. Haack, Holm Graessner, Birte Zurek, Kornelia Ellwanger, Stephan Ossowski, German Demidov, Marc Sturm, Julia M. Schulze-Hentrich, Rebecca Schüle, Christoph Kessler, Melanie Wayand, Matthis Synofzik, Carlo Wilke, Andreas Traschütz, Ludger Schöls, Holger Hengel, Peter Heutink, Han Brunner, Hans Scheffer, Nicoline Hoogerbrugge, Alexander Hoischen, Peter A.C. ’t Hoen, Lisenka E.L.M. Vissers, Christian Gilissen, Wouter Steyaert, Karolis Sablauskas, Richarda M. de Voer, Erik-Jan Kamsteeg, Bart van de Warrenburg, Nienke van Os, Iris te Paske, Erik Janssen, Elke de Boer, Marloes Steehouwer, Burcu Yaldiz, Tjitske Kleefstra, Anthony J. Brookes, Colin Veal, Spencer Gibson, Marc Wadsley, Mehdi Mehtarizadeh, Umar Riaz, Greg Warren, Farid Yavari Dizjikan, Thomas Shorter, Ana Töpf, Volker Straub, Chiara Marini Bettolo, Sabine Specht, Jill Clayton-Smith, Elizabeth Alexander, Laurence Faivre, Christel Thauvin, Antonio Vitobello, Anne-Sophie Denommé-Pichon, Yannis Duffourd, Emilie Tisserant, Ange-Line Bruel, Christine Peyron, Aurore Pélissier, Sergi Beltran, Ivo Glynne Gut, Steven Laurie, Davide Piscia, Leslie Matalonga, Anastasios Papakonstantinou, Gemma Bullich, Alberto Corvo, Carles Garcia, Marcos Fernandez-Callejo, Carles Hernández, Daniel Picó, Ida Paramonov, Hanns Lochmüller, Gulcin Gumus, Virginie Bros-Facer, Ana Rath, Marc Hanauer, Annie Olry, David Lagorce, Svitlana Havrylenko, Katia Izem, Fanny Rigour, Giovanni Stevanin, Alexandra Durr, Claire-Sophie Davoine, Léna Guillot-Noel, Anna Heinzmann, Giulia Coarelli, Gisèle Bonne, Teresinha Evangelista, Valérie Allamand, Isabelle Nelson, Rabah Ben Yaou, Corinne Metay, Bruno Eymard, Enzo Cohen, Antonio Atalaia, Tanya Stojkovic, Milan Macek, Jr., Marek Turnovec, Dana Thomasová, Radka Pourová Kremliková, Vera Franková, Markéta Havlovicová, Vlastimil Kremlik, Helen Parkinson, Thomas Keane, Dylan Spalding, Alexander Senf, Peter Robinson, Daniel Danis, Glenn Robert, Alessia Costa, Christine Patch, Mike Hanna, Henry Houlden, Mary Reilly, Jana Vandrovcova, Francesco Muntoni, Irina Zaharieva, Anna Sarkozy, Vincent Timmerman, Jonathan Baets, Liedewei Van de Vondel, Danique Beijer, Peter de Jonghe, Vincenzo Nigro, Sandro Banfi, Annalaura Torella, Francesco Musacchia, Giulio Piluso, Alessandra Ferlini, Rita Selvatici, Rachele Rossi, Marcella Neri, Stefan Aretz, Isabel Spier, Anna Katharina Sommer, Sophia Peters, Carla Oliveira, Jose Garcia Pelaez, Ana Rita Matos, Celina São José, Marta Ferreira, Irene Gullo, Susana Fernandes, Luzia Garrido, Pedro Ferreira, Fátima Carneiro, Morris A. Swertz, Lennart Johansson, Joeri K. van der Velde, Gerben van der Vries, Pieter B. Neerincx, Dieuwke Roelofs-Prins, Sebastian Köhler, Alison Metcalfe, Alain Verloes, Séverine Drunat, Caroline Rooryck, Aurelien Trimouille, Raffaele Castello, Manuela Morleo, Michele Pinelli, Alessandra Varavallo, Manuel Posada De la Paz, Eva Bermejo Sánchez, Estrella López Martín, Beatriz Martínez Delgado, F. Javier Alonso García de la Rosa, Andrea Ciolfi, Bruno Dallapiccola, Simone Pizzi, Francesca Clementina Radio, Marco Tartaglia, Alessandra Renieri, Elisa Benetti, Peter Balicza, Maria Judit Molnar, Ales Maver, Borut Peterlin, Alexander Münchau, Katja Lohmann, Rebecca Herzog, Martje Pauly, Alfons Macaya, Anna Marcé-Grau, Andres Nascimiento Osorio, Daniel Natera de Benito, Rachel Thompson, Kiran Polavarapu, David Beeson, Judith Cossins, Pedro M. Rodriguez Cruz, Peter Hackman, Mridul Johari, Marco Savarese, Bjarne Udd, Rita Horvath, Gabriel Capella, Laura Valle, Elke Holinski-Feder, Andreas Laner, Verena Steinke-Lange, Evelin Schröck, Andreas Rump

المصدر: HGG Advances, Vol 4, Iss 2, Pp 100186- (2023)

مصطلحات موضوعية: TSPEAR, Ectodermal dysplasia, Enamel knot, WNT10A, Hypodontia, Conical teeth, Genetics, QH426-470

الوصف: Summary: TSPEAR variants cause autosomal recessive ectodermal dysplasia (ARED) 14. The function of TSPEAR is unknown. The clinical features, the mutation spectrum, and the underlying mechanisms of ARED14 are poorly understood. Combining data from new and previously published individuals established that ARED14 is primarily characterized by dental anomalies such as conical tooth cusps and hypodontia, like those seen in individuals with WNT10A-related odontoonychodermal dysplasia. AlphaFold-predicted structure-based analysis showed that most of the pathogenic TSPEAR missense variants likely destabilize the β-propeller of the protein. Analysis of 100000 Genomes Project (100KGP) data revealed multiple founder TSPEAR variants across different populations. Mutational and recombination clock analyses demonstrated that non-Finnish European founder variants likely originated around the end of the last ice age, a period of major climatic transition. Analysis of gnomAD data showed that the non-Finnish European population TSPEAR gene-carrier rate is ∼1/140, making it one of the commonest AREDs. Phylogenetic and AlphaFold structural analyses showed that TSPEAR is an ortholog of drosophila Closca, an extracellular matrix-dependent signaling regulator. We, therefore, hypothesized that TSPEAR could have a role in enamel knot, a structure that coordinates patterning of developing tooth cusps. Analysis of mouse single-cell RNA sequencing (scRNA-seq) data revealed highly restricted expression of Tspear in clusters representing enamel knots. A tspeara−/−;tspearb−/− double-knockout zebrafish model recapitulated the clinical features of ARED14 and fin regeneration abnormalities of wnt10a knockout fish, thus suggesting interaction between tspear and wnt10a. In summary, we provide insights into the role of TSPEAR in ectodermal development and the evolutionary history, epidemiology, mechanisms, and consequences of its loss of function variants.

وصف الملف: electronic resource

العلاقة: http://www.sciencedirect.com/science/article/pii/S2666247723000180Test; https://doaj.org/toc/2666-2477Test

الوصول الحر: https://doaj.org/article/2978ae9e34b04565adb7415c6d46eb52Test

المؤلفون: Nicholas Owen, Maria Toms, Rodrigo M. Young, Jonathan Eintracht, Hajrah Sarkar, Brian P. Brooks, Mariya Moosajee, J.C. Ambrose, E.L. Baple, M. Bleda, F. Boardman-Pretty, J.M. Boissiere, C.R. Boustred, M.J. Caulfield, G.C. Chan, C.E.H. Craig, L.C. Daugherty, Burca A. de, A. Devereau, G. Elgar, R.E. Foulger, T. Fowler, P. Furió-Tarí, J.M. Hackett, D. Halai, J.E. Holman, T.J.P. Hubbard, R. Jackson, D. Kasperaviciute, M. Kayikci, L. Lahnstein, K. Lawson, S.E.A. Leigh, I.U.S. Leong, F.J. Lopez, F. Maleady-Crowe, J. Mason, E.M. McDonagh, L. Moutsianas, M. Mueller, N. Murugaesu, A.C. Need, C.A. Odhams, C. Patch, D. Perez-Gil, D. Polychronopoulos, J. Pullinger, T. Rahim, A. Rendon, P. Riesgo-Ferreiro, T. Rogers, M. Ryten, K. Savage, K. Sawant, R.H. Scott, A. Siddiq, A. Sieghart, D. Smedley, K.R. Smith, A. Sosinsky, W. Spooner, H.E. Stevens, A. Stuckey, R. Sultana, E.R.A. Thomas, S.R. Thompson, C. Tregidgo, A. Tucci, E. Walsh, S.A. Watters, M.J. Welland, E. Williams, K. Witkowska, S.M. Wood, M. Zarowiecki

المصدر: Genetics in Medicine. 24:1073-1084

مصطلحات موضوعية: Ankyrins, Coloboma, Mice, Phenotype, Animals, Humans, Microphthalmos, Genetic Testing, Bone Morphogenetic Protein Receptors, Type I, Zebrafish, Genetics (clinical)

الوصف: Ocular coloboma arises from genetic or environmental perturbations that inhibit optic fissure (OF) fusion during early eye development. Despite high genetic heterogeneity, 70% to 85% of patients remain molecularly undiagnosed. In this study, we have identified new potential causative genes using cross-species comparative meta-analysis.Evolutionarily conserved differentially expressed genes were identified through in silico analysis, with in situ hybridization, gene knockdown, and rescue performed to confirm spatiotemporal gene expression and phenotype. Interrogation of the 100,000 Genomes Project for putative pathogenic variants was performed.Nine conserved differentially expressed genes between zebrafish and mouse were identified. Expression of zebrafish ank3a, bmpr1ba/b, cdh4, and pdgfaa was localized to the OF, periocular mesenchyme cells, or ciliary marginal zone, regions traversed by the OF. Knockdown of ank3, bmpr1b, and pdgfaa revealed a coloboma and/or microphthalmia phenotype. Novel pathogenic variants in ANK3, BMPR1B, PDGFRA, and CDH4 were identified in 8 unrelated coloboma families. We showed BMPR1B rescued the knockdown phenotype but variant messenger RNAs failed, providing evidence of pathogenicity.We show the utility of cross-species meta-analysis to identify several novel coloboma disease-causing genes. There is a potential to increase the diagnostic yield for new and unsolved patients while adding to our understanding of the genetic basis of OF morphogenesis.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2abcc2c448dd2359acc7f64e01c39af8Test
https://doi.org/10.1016/j.gim.2021.12.014Test

المؤلفون: Heba Morsy, Mehdi Benkirane, Elisa Cali, Clarissa Rocca, Kristina Zhelcheska, Valentina Cipriani, Evangelia Galanaki, Reza Maroofian, Stephanie Efthymiou, David Murphy, Mary O’Driscoll, Mohnish Suri, Siddharth Banka, Jill Clayton-Smith, Thomas Wright, Melody Redman, Jennifer A. Bassetti, Mathilde Nizon, Benjamin Cogne, Rami Abu Jamra, Tobias Bartolomaeus, Marion Heruth, Ilona Krey, Janina Gburek-Augustat, Dagmar Wieczorek, Felix Gattermann, Meriel Mcentagart, Alice Goldenberg, Lucie Guyant-Marechal, Hector Garcia-Moreno, Paola Giunti, Brigitte Chabrol, Severine Bacrot, Roger Buissonnière, Virginie Magry, Vykuntaraju K. Gowda, Varunvenkat M. Srinivasan, Béla Melegh, András Szabó, Katalin Sümegi, Mireille Cossée, Monica Ziff, Russell Butterfield, David Hunt, Georgina Bird-Lieberman, Michael Hanna, Michel Koenig, Michael Stankewich, Jana Vandrovcova, Henry Houlden, J.C. Ambrose, P. Arumugam, E.L. Baple, M. Bleda, F. Boardman-Pretty, J.M. Boissiere, C.R. Boustred, H. Brittain, M.J. Caulfield, G.C. Chan, C.E.H. Craig, L.C. Daugherty, A. de Burca, A. Devereau, G. Elgar, R.E. Foulger, T. Fowler, P. Furió-Tarí, J.M. Hackett, D. Halai, A. Hamblin, S. Henderson, J.E. Holman, T.J.P. Hubbard, K. Ibáñez, R. Jackson, L.J. Jones, D. Kasperaviciute, M. Kayikci, L. Lahnstein, K. Lawson, S.E.A. Leigh, I.U.S. Leong, F.J. Lopez, F. Maleady-Crowe, J. Mason, E.M. McDonagh, L. Moutsianas, M. Mueller, N. Murugaesu, A.C. Need, C.A. Odhams, C. Patch, D. Perez-Gil, D. Polychronopoulos, J. Pullinger, T. Rahim, A. Rendon, P. Riesgo-Ferreiro, T. Rogers, M. Ryten, K. Savage, K. Sawant, R.H. Scott, A. Siddiq, A. Sieghart, D. Smedley, K.R. Smith, A. Sosinsky, W. Spooner, H.E. Stevens, A. Stuckey, R. Sultana, E.R.A. Thomas, S.R. Thompson, C. Tregidgo, A. Tucci, E. Walsh, S.A. Watters, M.J. Welland, E. Williams, K. Witkowska, S.M. Wood, M. Zarowiecki

المساهمون: UCL, Institute of Neurology [London], Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), William Harvey Research Institute, Barts and the London Medical School, Birmingham Women’s and Children’s Hospitals NHS Foundation Trust, Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust, Manchester Centre for Genomic Medicine [Manchester, UK] (MCGM), St Mary's Hospital Manchester-Manchester Academic Health Science Centre (MAHSC), University of Manchester [Manchester]-University of Manchester [Manchester]-Manchester University NHS Foundation Trust (MFT)-Faculty of Biology, Medicine and Health [Manchester, UK], University of Manchester [Manchester], Manchester University NHS Foundation Trust (MFT), Chapel Allerton Hospital, Leeds Teaching Hospitals NHS Trust, Weill Cornell Medicine [New York], unité de recherche de l'institut du thorax UMR1087 UMR6291 (ITX), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université - UFR de Médecine et des Techniques Médicales (Nantes Univ - UFR MEDECINE), Nantes Université - pôle Santé, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Santé, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), University Hospital Leipzig, University Hospital Düsseldorf, St George’s University Hospitals, Département de génétique [CHU Rouen] (Centre Normandie de Génomique et de Médecine Personnalisée), CHU Rouen, Normandie Université (NU)-Normandie Université (NU), Service de pédiatrie et neurologie pédiatrique, Université de la Méditerranée - Aix-Marseille 2-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE), University College London Hospitals NHS Foundation Trust [London, UK] (UCLH), Centre Hospitalier de Versailles André Mignot (CHV), Unité de génétique médicale et oncogénétique [CHU Amiens Picardie], CHU Amiens-Picardie, Auteur indépendant, University of Pécs Medical School (UP MS), University of Pecs, Great Ormond Street Hospital for Children NHS Foundation Trust [London, UK] (GOSHC), University of Utah School of Medicine [Salt Lake City], Princess Anne Hospital [Southampton, UK] (PAH), University of Southampton, University Hospital Southampton NHS Foundation Trust, Department of Pathology [Yale], Yale School of Medicine [New Haven, Connecticut] (YSM), H.M., J.V., and H.H. are supported by an Medical Research Council strategic award, MR/S005021/1, to establish International Centre for Genomic Medicine in Neuromuscular Diseases. H.M. is supported by Wellcome Trust grant 220906/Z/20/Z. H.H. is funded by the Medical Research Council (MR/S01165X/1, MR/S005021/1, G0601943), NIHR University College London Hospitals Biomedical Research Centre, Rosetree Trust UK, Ataxia UK, Multiple System Atrophy Trust, Brain Research UK, Sparks GOSH Charity, Muscular Dystrophy UK, and Multiple System Atrophy Trust. R.But. is supported by the Penelope Rare and Undiagnosed Disease Program at the University of Utah with funding from the Center for Genomic Medicine and with support from Matt Velinder (Department of Human Genetics, University of Utah) and Rong Mao and Pinar Bayrak-Toydemir (ARUP Laboratories). B.M. is supported by NKFIH K138669. This research was made possible through access to the data and findings generated by the 100,000 Genomes Project. The 100,000 Genomes Project is managed by Genomics England Limited (a wholly owned company of the Department of Health and Social Care). The 100,000 Genomes Project is funded by the National Institute for Health and Care Research and NHS England. The Wellcome Trust, Cancer Research UK, and the Medical Research Council have also funded the research infrastructure. The 100,000 Genomes Project uses data provided by patients and collected by the National Health Service as part of their care and support. This study makes use of data generated by the DatabasE of genomiC varIation and Phenotype in Humans using Ensembl Resources (DECIPHER) community. A full list of centers which contributed to the generation of the data is available at https://deciphergenomics.org/about/statsTest and via email from contact@deciphergenomics.org. Funding for the DECIPHER project was provided by Wellcome. We are thankful to the Deciphering Developmental Disorders Study for the invaluable collaboration. The Deciphering Developmental Disorders Study (Cambridge South Research Ethics Committee approval 10/H0305/83 and the Republic of Ireland Research Ethics Committee GEN/284/12) presents independent research commissioned by the Health Innovation Challenge Fund (grant number HICF-1009-003), a parallel funding partnership between the Wellcome Trust and Department of Health and the Wellcome Trust Sanger Institute (grant number WT098051), MORNET, Dominique, Nottingham University Hospitals NHS Trust (NUH), Weill Cornell Medicine [Cornell University], Cornell University [New York]

المصدر: Genetics in Medicine
Genetics in Medicine, 2022, ⟨10.1016/j.gim.2022.09.013⟩
Queen Square Genomics 2023, ' Expanding SPTAN1 monoallelic variant associated disorders : From epileptic encephalopathy to pure spastic paraplegia and ataxia ', Genetics in medicine : official journal of the American College of Medical Genetics, vol. 25, no. 1, pp. 76-89 . https://doi.org/10.1016/j.gim.2022.09.013Test

مصطلحات موضوعية: [SDV] Life Sciences [q-bio], Developmental delay, [SDV]Life Sciences [q-bio], Hereditary spastic paraplegia, Genetics (clinical), Hereditary ataxia, SPTAN1, Developmental epileptic encephalopathy

الوصف: On behalf of Queen Square Genomics On behalf of Genomics England Research Consortium; International audience; Purpose: Nonerythrocytic αII-spectrin (SPTAN1) variants have been previously associated with intellectual disability and epilepsy. We conducted this study to delineate the phenotypic spectrum of SPTAN1 variants.Methods: We carried out SPTAN1 gene enrichment analysis in the rare disease component of the 100,000 Genomes Project and screened 100,000 Genomes Project, DECIPHER database, and GeneMatcher to identify individuals with SPTAN1 variants. Functional studies were performed on fibroblasts from 2 patients.Results: Statistically significant enrichment of rare (minor allele frequency < 1 × 10-5) probably damaging SPTAN1 variants was identified in families with hereditary ataxia (HA) or hereditary spastic paraplegia (HSP) (12/1142 cases vs 52/23,847 controls, p = 2.8 × 10-5). We identified 31 individuals carrying SPTAN1 heterozygous variants or deletions. A total of 10 patients presented with pure or complex HSP/HA. The remaining 21 patients had developmental delay and seizures. Irregular αII-spectrin aggregation was noted in fibroblasts derived from 2 patients with p.(Arg19Trp) and p.(Glu2207del) variants.Conclusion: We found that SPTAN1 is a genetic cause of neurodevelopmental disorder, which we classified into 3 distinct subgroups. The first comprises developmental epileptic encephalopathy. The second group exhibits milder phenotypes of developmental delay with or without seizures. The final group accounts for patients with pure or complex HSP/HA.

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98bed7407f3676cdb65ab360030ed566Test
https://hal.science/hal-03840317/documentTest

المؤلفون: Anjali Vig, James A. Poulter, Daniele Ottaviani, Erika Tavares, Katerina Toropova, Anna Maria Tracewska, Antonio Mollica, Jasmine Kang, Oshini Kehelwathugoda, Tara Paton, Jason T. Maynes, Gabrielle Wheway, Gavin Arno, J.C. Ambrose, P. Arumugam, E.L. Baple, M. Bleda, F. Boardman-Pretty, J.M. Boissiere, C.R. Boustred, H. Brittain, M.J. Caulfield, G.C. Chan, C.E.H. Craig, L.C. Daugherty, A. de Burca, A. Devereau, G. Elgar, R.E. Foulger, T. Fowler, P. Furió-Tarí, J.M. Hackett, D. Halai, A. Hamblin, S. Henderson, J.E. Holman, T.J.P. Hubbard, K. Ibáñez, R. Jackson, L.J. Jones, D. Kasperaviciute, M. Kayikci, L. Lahnstein, K. Lawson, S.E.A. Leigh, I.U.S. Leong, F.J. Lopez, F. Maleady-Crowe, J. Mason, E.M. McDonagh, L. Moutsianas, M. Mueller, N. Murugaesu, A.C. Need, C.A. Odhams, C. Patch, D. Perez-Gil, D. Polychronopoulos, J. Pullinger, T. Rahim, A. Rendon, P. Riesgo-Ferreiro, T. Rogers, M. Ryten, K. Savage, K. Sawant, R.H. Scott, A. Siddiq, A. Sieghart, D. Smedley, K.R. Smith, A. Sosinsky, W. Spooner, H.E. Stevens, A. Stuckey, R. Sultana, E.R.A. Thomas, S.R. Thompson, C. Tregidgo, A. Tucci, E. Walsh, S.A. Watters, M.J. Welland, E. Williams, K. Witkowska, S.M. Wood, M. Zarowiecki, Kamron N. Khan, Martin McKibbin, Carmel Toomes, Manir Ali, Matteo Di Scipio, Shuning Li, Jamie Ellingford, Graeme Black, Andrew Webster, Małgorzata Rydzanicz, Piotr Stawiński, Rafał Płoski, Ajoy Vincent, Michael E. Cheetham, Chris F. Inglehearn, Anthony Roberts, Elise Heon

المصدر: Genetics in Medicine

مصطلحات موضوعية: 0301 basic medicine, Proband, Retinal degeneration, intraflagellar transport (IFT), Cytoplasmic Dyneins, Ellis-Van Creveld Syndrome, 030105 genetics & heredity, Biology, Article, Retina, 03 medical and health sciences, Exon, chemistry.chemical_compound, primary cilia, medicine, Organoid, Missense mutation, Humans, Induced pluripotent stem cell, Genetics (clinical), Exome sequencing, Retinal Degeneration, Retinal, Exons, DYNC2H1, medicine.disease, Molecular biology, retinitis pigmentosa (RP), Pedigree, inherited retinal disease (IRD), 030104 developmental biology, chemistry, Mutation

الوصف: Purpose Determining the role of DYNC2H1 variants in nonsyndromic inherited retinal disease (IRD). Methods Genome and exome sequencing were performed for five unrelated cases of IRD with no identified variant. In vitro assays were developed to validate the variants identified (fibroblast assay, induced pluripotent stem cell [iPSC] derived retinal organoids, and a dynein motility assay). Results Four novel DYNC2H1 variants (V1, g.103327020_103327021dup; V2, g.103055779A>T; V3, g.103112272C>G; V4, g.103070104A>C) and one previously reported variant (V5, g.103339363T>G) were identified. In proband 1 (V1/V2), V1 was predicted to introduce a premature termination codon (PTC), whereas V2 disrupted the exon 41 splice donor site causing incomplete skipping of exon 41. V1 and V2 impaired dynein-2 motility in vitro and perturbed IFT88 distribution within cilia. V3, homozygous in probands 2–4, is predicted to cause a PTC in a retina-predominant transcript. Analysis of retinal organoids showed that this new transcript expression increased with organoid differentiation. V4, a novel missense variant, was in trans with V5, previously associated with Jeune asphyxiating thoracic dystrophy (JATD). Conclusion The DYNC2H1 variants discussed herein were either hypomorphic or affecting a retina-predominant transcript and caused nonsyndromic IRD. Dynein variants, specifically DYNC2H1 variants are reported as a cause of non syndromic IRD.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c0d1392a5b005c16762f6fc0adb770bTest
http://europepmc.org/articles/PMC7708302Test

المؤلفون: M. Tanguy, A. Hamblin, Ehsan Ghayoor Karimiani, Javeria Raza Alvi, Gökhan Yigit, D. Kasperaviciute, Shima Imannezhad, C.R. Boustred, Brigitte Chabrol, Ehtisham Ul Haq Makhdoom, Cécile Mignon-Ravix, Vasiliki Karageorgou, Maria Iqbal, Farah Ashrafzadeh, Sheraz Jamal Khan, Michael Field, Henry Houlden, Adam Jackson, David A. Dyment, J. Pullinger, Yasra Sarwar, S.E.A. Leigh, Jamshaid Mahmood Baig, Zafar Ali, S.C. Smith, A. Stuckey, Muhammad Sajid Hussain, Fatima Rahman, N. Murugaesu, J.C. Ambrose, M. Mueller, K. Sawant, A. Sieghart, E. Walsh, Alistair T. Pagnamenta, Shahid Mahmood Baig, R. Jackson, E.R.A. Thomas, M.B. Pereira, Fowzan S. Alkuraya, K. Witkowska, Augusto Rendon, P. Arumugam, F. Boardman-Pretty, Angelika A. Noegel, Siddharth Banka, Uzma Abdullah, Tim Hubbard, T. Rahim, F.J. Lopez, Dalal K. Bubshait, Louise J. Jones, A. Giess, M.J. Welland, Susanne Motameny, Mehran Beiraghi Toosi, E. Williams, Barbara Vona, Arianna Tucci, K. Savage, Florence Molinari, Florence Riccardi, Mark J. Caulfield, I.U. Leong, M. Kayikci, Muhammad Jameel, Christian Beetz, A. Kousathanas, A. Siddiq, T. Fowler, Yun Li, Jozef Hertecant, M. Bleda, F. Maleady-Crowe, Birgit Budde, Sofia Douzgou, Wolfgang Höhne, C.A. Odhams, Laurent Villard, Janine Altmüller, S.R. Thompson, Lesley C. Adès, Christine Patch, Aboulfazl Rad, P. O’Donovan, A.C. Need, S. M. Wood, L. Lahnstein, L. Moutsianas, Büşranur Çavdarlı, Reza Maroofian, S. Henderson, Tobias Scherf de Almeida, D. Perez-Gil, Tipu Sultan, T. Rogers, Stephanie Efthymiou, Shazia Maqbool, G.C. Chan, A. Sosinsky, Jayne Antony, H. Brittain, R.H. Scott, Peter Nürnberg, Bernd Wollnik, Matthew Osmond

المساهمون: Marseille medical genetics - Centre de génétique médicale de Marseille (MMG), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de génétique médicale [Hôpital de la Timone - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Institut National de la Santé et de la Recherche Médicale (INSERM), Neurologie, maladies neuro-musculaires [Hôpital de la Timone - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)

المصدر: Genetics in Medicine
Genetics in Medicine, Nature Publishing Group, 2021, ⟨10.1038/s41436-021-01260-4⟩
Genomics England Research Consortium 2021, ' Biallelic variants in PCDHGC4 cause a novel neurodevelopmental syndrome with progressive microcephaly, seizures, and joint anomalies ', Genetics in medicine : official journal of the American College of Medical Genetics . https://doi.org/10.1038/s41436-021-01260-4Test

مصطلحات موضوعية: 0301 basic medicine, In silico, Cadherin Related Proteins, Biology, Article, 03 medical and health sciences, symbols.namesake, 0302 clinical medicine, Neurodevelopmental disorder, Seizures, Intellectual Disability, Intellectual disability, medicine, Missense mutation, Humans, Genetics (clinical), Exome sequencing, Genetics, Progressive microcephaly, [SDV.GEN]Life Sciences [q-bio]/Genetics, medicine.disease, Cadherins, Human genetics, Pedigree, 030104 developmental biology, Phenotype, Neurodevelopmental Disorders, Mendelian inheritance, symbols, Microcephaly, Technology Platforms, 030217 neurology & neurosurgery

الوصف: PURPOSE: We aimed to define a novel autosomal recessive neurodevelopmental disorder, characterize its clinical features, and identify the underlying genetic cause for this condition.METHODS: We performed a detailed clinical characterization of 19 individuals from nine unrelated, consanguineous families with a neurodevelopmental disorder. We used genome/exome sequencing approaches, linkage and cosegregation analyses to identify disease-causing variants, and we performed three-dimensional molecular in silico analysis to predict causality of variants where applicable.RESULTS: In all affected individuals who presented with a neurodevelopmental syndrome with progressive microcephaly, seizures, and intellectual disability we identified biallelic disease-causing variants in Protocadherin-gamma-C4 (PCDHGC4). Five variants were predicted to induce premature protein truncation leading to a loss of PCDHGC4 function. The three detected missense variants were located in extracellular cadherin (EC) domains EC5 and EC6 of PCDHGC4, and in silico analysis of the affected residues showed that two of these substitutions were predicted to influence the Ca2+-binding affinity, which is essential for multimerization of the protein, whereas the third missense variant directly influenced the cis-dimerization interface of PCDHGC4.CONCLUSION: We show that biallelic variants in PCDHGC4 are causing a novel autosomal recessive neurodevelopmental disorder and link PCDHGC4 as a member of the clustered PCDH family to a Mendelian disorder in humans.

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c59f5c4822ac8d7c57e3efbd28beeedTest
https://hal.archives-ouvertes.fr/hal-03322569Test

المؤلفون: Sheng-Jia Lin, Barbara Vona, Patricia G. Barbalho, Rauan Kaiyrzhanov, Reza Maroofian, Cassidy Petree, Mariasavina Severino, Valentina Stanley, Pratishtha Varshney, Paulina Bahena, Fatema Alzahrani, Amal Alhashem, Alistair T. Pagnamenta, Gudrun Aubertin, Juvianee I. Estrada-Veras, Héctor Adrián Díaz Hernández, Neda Mazaheri, Andrea Oza, Jenny Thies, Deborah L. Renaud, Sanmati Dugad, Jennifer McEvoy, Tipu Sultan, Lynn S. Pais, Brahim Tabarki, Daniel Villalobos-Ramirez, Aboulfazl Rad, J.C. Ambrose, P. Arumugam, M. Bleda, F. Boardman-Pretty, C.R. Boustred, H. Brittain, M.J. Caulfield, G.C. Chan, T. Fowler, A. Giess, A. Hamblin, S. Henderson, T.J.P. Hubbard, R. Jackson, L.J. Jones, D. Kasperaviciute, M. Kayikci, A. Kousathanas, L. Lahnstein, S.E.A. Leigh, I.U.S. Leong, F.J. Lopez, F. Maleady-Crowe, L. Moutsianas, M. Mueller, N. Murugaesu, A.C. Need, P. O‘Donovan, C.A. Odhams, C. Patch, D. Perez-Gil, M.B. Pereira, J. Pullinger, T. Rahim, A. Rendon, T. Rogers, K. Savage, K. Sawant, R.H. Scott, A. Siddiq, A. Sieghart, S.C. Smith, A. Sosinsky, A. Stuckey, M. Tanguy, E.R.A. Thomas, S.R. Thompson, A. Tucci, E. Walsh, M.J. Welland, E. Williams, K. Witkowska, S.M. Wood, Hamid Galehdari, Farah Ashrafzadeh, Afsaneh Sahebzamani, Kolsoum Saeidi, Erin Torti, Houda Z. Elloumi, Sara Mora, Timothy B. Palculict, Hui Yang, Jonathan D. Wren, null Ben Fowler, Manali Joshi, Martine Behra, Shawn M. Burgess, Swapan K. Nath, Michael G. Hanna, Margaret Kenna, J. Lawrence Merritt, Henry Houlden, Ehsan Ghayoor Karimiani, Maha S. Zaki, Thomas Haaf, Fowzan S. Alkuraya, Joseph G. Gleeson, Gaurav K. Varshney

المصدر: Genetics in medicine : official journal of the American College of Medical Genetics. 23(10)

مصطلحات موضوعية: Genetics, Lysine-tRNA Ligase, biology, Disease, biology.organism_classification, medicine.disease, Phenotype, Human genetics, Disease Models, Animal, Neurodevelopmental Disorders, medicine, Missense mutation, Autism, Animals, Humans, Allele, Hearing Loss, Zebrafish, Genetics (clinical), Gene knockout, Alleles

الوصف: Pathogenic variants in Lysyl-tRNA synthetase 1 (KARS1) have increasingly been recognized as a cause of early-onset complex neurological phenotypes. To advance the timely diagnosis of KARS1-related disorders, we sought to delineate its phenotype and generate a disease model to understand its function in vivo. Through international collaboration, we identified 22 affected individuals from 16 unrelated families harboring biallelic likely pathogenic or pathogenic in KARS1 variants. Sequencing approaches ranged from disease-specific panels to genome sequencing. We generated loss-of-function alleles in zebrafish. We identify ten new and four known biallelic missense variants in KARS1 presenting with a moderate-to-severe developmental delay, progressive neurological and neurosensory abnormalities, and variable white matter involvement. We describe novel KARS1-associated signs such as autism, hyperactive behavior, pontine hypoplasia, and cerebellar atrophy with prevalent vermian involvement. Loss of kars1 leads to upregulation of p53, tissue-specific apoptosis, and downregulation of neurodevelopmental related genes, recapitulating key tissue-specific disease phenotypes of patients. Inhibition of p53 rescued several defects of kars1−/− knockouts. Our work delineates the clinical spectrum associated with KARS1 defects and provides a novel animal model for KARS1-related human diseases revealing p53 signaling components as potential therapeutic targets.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91f3ae350cc512f0b956a6e8d9210c51Test
https://pubmed.ncbi.nlm.nih.gov/34172899Test

المؤلفون: David A. Parry, Carol-Anne Martin, Philip Greene, Joseph A. Marsh, J.C. Ambrose, P. Arumugam, E.L. Baple, M. Bleda, F. Boardman-Pretty, J.M. Boissiere, C.R. Boustred, H. Brittain, M.J. Caulfield, G.C. Chan, C.E.H. Craig, L.C. Daugherty, A. de Burca, A. Devereau, G. Elgar, R.E. Foulger, T. Fowler, P. Furió-Tarí, A. Giess, J.M. Hackett, D. Halai, A. Hamblin, S. Henderson, J.E. Holman, T.J.P. Hubbard, K. Ibáñez, R. Jackson, L.J. Jones, D. Kasperaviciute, M. Kayikci, A. Kousathanas, L. Lahnstein, K. Lawson, S.E.A. Leigh, I.U.S. Leong, F.J. Lopez, F. Maleady-Crowe, J. Mason, E.M. McDonagh, L. Moutsianas, M. Mueller, N. Murugaesu, A.C. Need, C.A. Odhams, A. Orioli, C. Patch, D. Perez-Gil, M.B. Pereira, D. Polychronopoulos, J. Pullinger, T. Rahim, A. Rendon, P. Riesgo-Ferreiro, T. Rogers, M. Ryten, K. Savage, K. Sawant, R.H. Scott, A. Siddiq, A. Sieghart, D. Smedley, K.R. Smith, S.C. Smith, A. Sosinsky, W. Spooner, H.E. Stevens, A. Stuckey, R. Sultana, M. Tanguy, E.R.A. Thomas, S.R. Thompson, C. Tregidgo, A. Tucci, E. Walsh, S.A. Watters, M.J. Welland, E. Williams, K. Witkowska, S.M. Wood, M. Zarowiecki, Moira Blyth, Helen Cox, Deirdre Donnelly, Lynn Greenhalgh, Stephanie Greville-Heygate, Victoria Harrison, Katherine Lachlan, Caoimhe McKenna, Alan J. Quigley, Gillian Rea, Lisa Robertson, Mohnish Suri, Andrew P. Jackson

المصدر: Genetics in Medicine
Blyth, M, Cox, H, Donnelly, D E, Greenhalgh, L, Greville-Heygate, S, Harrison, V, Lachlan, K, McKenna, C, Quigley, A, Rea, G, Robertson, L & Suri, M & Jackson, A P 2020, ' Heterozygous Lamin B1 and Lamin B2 Variants cause Primary Microcephaly and Define a Novel Laminopathy ', Genetics in Medicine, vol. 23, no. 2, pp. 408–414 . https://doi.org/10.1038/s41436-020-00980-3Test

مصطلحات موضوعية: 0301 basic medicine, Microcephaly, Laminopathy, laminopathy, Biology, Brief Communication, Genome, 03 medical and health sciences, 0302 clinical medicine, medicine, Humans, Exome, Genetics (clinical), Genetics, Progeria, Lamin Type B, primary microcephaly, Laminopathies, medicine.disease, Phenotype, neurodevelopmental disorder, 030104 developmental biology, LMNB1, LMNB2, Nuclear lamina, 030217 neurology & neurosurgery, Lamin

الوصف: PurposeLamins are the major component of nuclear lamina, maintaining structural integrity of the nucleus. Lamin A/C variants are well established to cause a spectrum of disorders ranging from myopathies to progeria, termed laminopathies. Phenotypes resulting from variants in LMNB1 and LMNB2 have been much less clearly defined.MethodsWe investigated exome and genome sequencing from the Deciphering Developmental Disorders Study and the 100,000 Genomes Project to identify novel microcephaly genes.ResultsStarting from a cohort of patients with extreme microcephaly, 13 individuals with heterozygous variants in the two human B-type lamins were identified. Recurrent variants were established to be de novo in nine cases and shown to affect highly conserved residues within the lamin ɑ-helical rod domain, likely disrupting interactions required for higher-order assembly of lamin filaments.ConclusionWe identify dominant pathogenic variants in LMNB1 and LMNB2 as a genetic cause of primary microcephaly, implicating a major structural component of the nuclear envelope in its etiology and defining a new form of laminopathy. The distinct nature of this lamin B–associated phenotype highlights the strikingly different developmental requirements for lamin paralogs and suggests a novel mechanism for primary microcephaly warranting future investigation.

وصف الملف: text; application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7c3afeb46142409f18e86e168fe778aTest