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Neurology gene panel

Dorota Monies, Hindi N Alhindi, Mohamed A Almuhaizea, Mohamed Abouelhoda, Anas M Alazami, Ewa Goljan, Banan Alyounes, Dyala Jaroudi, Abdulelah AlIssa, Khalid Alabdulrahman, Shazia Subhani, Mohamed El-Kalioby, Tariq Faquih, Salma M Wakil, Nada A Altassan, Brian F Meyer, Saeed Bohlega
BACKGROUND: Fifty random genetically unstudied families (limb-girdle muscular dystrophy (LGMD)/myopathy) were screened with a gene panel incorporating 759 OMIM genes associated with neurological disorders. Average coverage of the CDS and 10 bp flanking regions of genes was 99 %. All families were referred to the Neurosciences Clinic of King Faisal Specialist Hospital and Research Centre, Saudi Arabia. Patients presented with muscle weakness affecting the pelvic and shoulder girdle. Muscle biopsy in all cases showed dystrophic or myopathic changes...
September 27, 2016: Human Genomics
Diana Carranza, Ana Karina Vega, Sara Torres-Rusillo, Enrique Montero, Luis Javier Martinez, Manuel Santamaría, Juan Luis Santos, Ignacio J Molina
Ataxia-telangiectasia is a multisystemic disease with severe neurological affectation, immunodeficiency and telangiectasia. The disorder is caused by alterations in the ATM gene, whose size and complexity make molecular diagnosis difficult. We designed a target-enrichment next-generation sequencing strategy to characterize 28 patients from several regions of Spain. This approach allowed us to identify gene variants affecting function in 54 out of the 56 alleles analyzed, although the two unresolved alleles belong to brothers...
September 23, 2016: Neuromolecular Medicine
Emma S Reid, Apostolos Papandreou, Suzanne Drury, Christopher Boustred, Wyatt W Yue, Yehani Wedatilake, Clare Beesley, Thomas S Jacques, Glenn Anderson, Lara Abulhoul, Alex Broomfield, Maureen Cleary, Stephanie Grunewald, Sophia M Varadkar, Nick Lench, Shamima Rahman, Paul Gissen, Peter T Clayton, Philippa B Mills
Neurometabolic disorders are markedly heterogeneous, both clinically and genetically, and are characterized by variable neurological dysfunction accompanied by suggestive neuroimaging or biochemical abnormalities. Despite early specialist input, delays in diagnosis and appropriate treatment initiation are common. Next-generation sequencing approaches still have limitations but are already enabling earlier and more efficient diagnoses in these patients. We designed a gene panel targeting 614 genes causing inborn errors of metabolism and tested its diagnostic efficacy in a paediatric cohort of 30 undiagnosed patients presenting with variable neurometabolic phenotypes...
September 6, 2016: Brain: a Journal of Neurology
Petra Laššuthová, Dana Šafka Brožková, Marcela Krůtová, Jana Neupauerová, Jana Haberlová, Radim Mazanec, Pavel Dřímal, Pavel Seeman
BACKGROUND: Inherited peripheral neuropathies (IPN) are the most common inherited neurological condition. It represents a highly heterogeneous group, both clinically and genetically. Targeted disease specific gene panel massively parallel sequencing (MPS) seems to be a useful tool in diagnosis of disorders with high genetic heterogeneity. METHODS: In our study, we have designed, validated and updated our own custom gene panel of all known genes associated with IPN...
2016: Orphanet Journal of Rare Diseases
Andromeda Liñán-Rico, Fabio Turco, Fernando Ochoa-Cortes, Alan Harzman, Bradley J Needleman, Razvan Arsenescu, Mahmoud Abdel-Rasoul, Paolo Fadda, Iveta Grants, Emmett Whitaker, Rosario Cuomo, Fievos L Christofi
BACKGROUND: Clinical observations or animal studies implicate enteric glial cells in motility disorders, irritable bowel syndrome, inflammatory bowel disease, gastrointestinal (GI) infections, postoperative ileus, and slow transit constipation. Mechanisms underlying glial responses to inflammation in human GI tract are not understood. Our goal was to identify the "reactive human enteric glial cell (rhEGC) phenotype" induced by inflammation, and probe its functional relevance. METHODS: Human enteric glial cells in culture from 15 GI-surgical specimens were used to study gene expression, Ca, and purinergic signaling by Ca/fluo-4 imaging and mechanosensitivity...
August 2016: Inflammatory Bowel Diseases
Saeed A Bohlega, Bashayer R Al-Mubarak, Eman A Alyemni, Mohamed Abouelhoda, Dorota Monies, Abeer E Mustafa, Dania S Khalil, Sara Al Haibi, Hussam Abou Al-Shaar, Tariq Faquih, Mohamed El-Kalioby, Asma I Tahir, Nada A Al Tassan
BACKGROUND: Recessive mutations in PLA2G6 have been associated with different neurodegenerative disorders, including infantile neuroaxonal dystrophy, neurodegeneration with brain iron accumulation and more recently, early-onset dystonia parkinsonism. METHOD: Targeted-next generation sequencing using a custom Neurology panel, containing 758 OMIM-listed genes implicated in neurological disorders, was carried out in two index cases from two different Saudi families displaying early-onset levodopa-responsive Parkinsonism with pyramidal signs and additional clinical features...
2016: BMC Research Notes
F Uettwiller, G Sarrabay, M P Rodero, G I Rice, E Lagrue, Y Marot, K Deiva, I Touitou, Y J Crow, P Quartier
The objective of this paper is to: describe the phenotype compound heterozygote for mutations in CECR1 in two children. We describe the clinical and immunological phenotype, including the assessment of ADA2 activity, cytokine expression, interferon-stimulated and neutrophil-stimulated gene signatures, and the results of CECR1 sequencing. The first patient presented with intermittent fever, cutaneous vasculitis, myalgia and muscle inflammation on MRI leading to a provisional diagnosis of periarteritis nodosa...
2016: RMD Open
Jonathan D J Labonne, Kang-Han Lee, Shigeki Iwase, Il-Keun Kong, Michael P Diamond, Lawrence C Layman, Cheol-Hee Kim, Hyung-Goo Kim
Microdeletion syndromes are frequent causes of neuropsychiatric disorders leading to intellectual disability as well as autistic features accompanied by epilepsy and craniofacial anomalies. From comparative deletion mapping of the smallest microdeletion to date at 12q24.31, found in a patient with overlapping clinical features of 12q24.31 microdeletion syndrome, we narrowed the putative critical region to 445 kb containing seven genes, one microRNA, and one non-coding RNA. Zebrafish in situ hybridization and comprehensive transcript analysis of annotated genes in the panels of human organ and brain suggest that these are all candidates for neurological phenotypes excluding the gene HPD...
July 2016: Human Genetics
Elisa Teyssou, Laura Chartier, Mélanie Albert, Alexandra Bouscary, Jean-Christophe Antoine, Jean-Philippe Camdessanché, Francesco Rotolo, Philippe Couratier, François Salachas, Danielle Seilhean, Stéphanie Millecamps
Mutations in CHCHD10 have been reported as the cause of a large panel of neurologic disorders. To confirm the contribution of this gene to amyotrophic lateral sclerosis (ALS) disease, we analyzed the 4 coding exons of CHCHD10 by Sanger sequencing in a cohort of 118 French familial ALS already excluded for all known ALS-related genes. We did not find any pathogenic mutation suggesting that CHCHD10 is not a major genetic cause of familial ALS, in France.
June 2016: Neurobiology of Aging
Matthis Synofzik, Katrien Smets, Martial Mallaret, Daniela Di Bella, Constanze Gallenmüller, Jonathan Baets, Martin Schulze, Stefania Magri, Elisa Sarto, Mona Mustafa, Tine Deconinck, Tobias Haack, Stephan Züchner, Michael Gonzalez, Dagmar Timmann, Claudia Stendel, Thomas Klopstock, Alexandra Durr, Christine Tranchant, Marc Sturm, Wahiba Hamza, Lorenzo Nanetti, Caterina Mariotti, Michel Koenig, Ludger Schöls, Rebecca Schüle, Peter de Jonghe, Mathieu Anheim, Franco Taroni, Peter Bauer
Mutations in the synaptic nuclear envelope protein 1 (SYNE1) gene have been reported to cause a relatively pure, slowly progressive cerebellar recessive ataxia mostly identified in Quebec, Canada. Combining next-generation sequencing techniques and deep-phenotyping (clinics, magnetic resonance imaging, positron emission tomography, muscle histology), we here established the frequency, phenotypic spectrum and genetic spectrum of SYNE1 in a screening of 434 non-Canadian index patients from seven centres across Europe...
May 2016: Brain: a Journal of Neurology
Ahmad Hosseini Tashnizi, Mansooreh Jaberipour, Mahboobeh Razmkhah, Susan Rahnama, Mojtaba Habibagahi
AIM OF STUDY: WEE1, a member of serine/threonine protein kinase family is the master inhibitor of cyclin-dependent kinase 1 in cell cycle. Over-expression of WEE1 in glioblastomas (GBMs) and some other cancers has been shown. Here, we investigated the expression of WEE1 in 13 brain samples from GBM patients and two GBM cell lines. Further to that, we asked whether if knocking down WEE1 expression in the cell lines change tumor cells' reaction. MATERIALS AND METHODS: All brain tumor samples were collected after confirmed pathological diagnosis...
January 2016: Journal of Cancer Research and Therapeutics
Nicholas E Johnson
The current issue of Neurology® Genetics emphasizes the unparalleled role of next-generation sequencing (NGS) in defining an expanding spectrum of genetic neurologic disorders. Clinically, NGS encompasses the use of large gene panels, whole-exome sequencing (WES), or whole-genome sequencing (WGS). The impact of NGS technology is twofold. First, researchers have discovered novel genes as the cause of neurologic disorders. This research includes the efforts of Martikainen et al.(1) to define further the phenotype of a previously reported SNCA mutation that is associated with autosomal dominant Parkinson disease...
December 2015: Neurology. Genetics
Neven Maksemous, Bishakha Roy, Robert A Smith, Lyn R Griffiths
Episodic Ataxia type 2 (EA2) is a rare autosomal dominantly inherited neurological disorder characterized by recurrent disabling imbalance, vertigo, and episodes of ataxia lasting minutes to hours. EA2 is caused most often by loss of function mutations of the calcium channel gene CACNA1A. In addition to EA2, mutations in CACNA1A are responsible for two other allelic disorders: familial hemiplegic migraine type 1 (FHM1) and spinocerebellar ataxia type 6 (SCA6). Herein, we have utilized next-generation sequencing (NGS) to screen the coding sequence, exon-intron boundaries, and Untranslated Regions (UTRs) of five genes where mutation is known to produce symptoms related to EA2, including CACNA1A...
March 2016: Molecular Genetics & Genomic Medicine
Andreea Dana Fişuş, Doina Suzana Pop, Monica Blanka Rusu, Florina Vultur, Karin Ursula Horvath
Retinal vein occlusion (RVO) is the second most common retinal vein disease with significant visual loss via thrombus or compression of vein wall. Thrombophilia is the predisposition to vascular thrombosis with the existence of genetic defect that leads to blood hypercoagulability. This report describes the case of a 55 year old male patient, with an active life who presented himself at the emergency room with acute visual lose, insidious and progressive visual field constriction, without any known history of neurological or vascular diseases...
July 2015: Romanian Journal of Ophthalmology
Signe Marie Borch Nielsen, Tua Vinther-Jensen, Jørgen E Nielsen, Anne Nørremølle, Lis Hasholt, Lena E Hjermind, Knud Josefsen
Huntington's disease (HD) is a dominantly inherited, progressive neurological disorder caused by a CAG repeat elongation in the huntingtin gene. In addition to motor-, psychiatric- and cognitive dysfunction, peripheral disease manifestations in the form of metabolic changes and cellular dysfunction are seen. Blood levels of a wide range of hormones, metabolites and proteins have been analyzed in HD patients, identifying several changes associated with the disease. However, a comprehensive panel of liver function tests (LFT) has not been performed...
March 15, 2016: Journal of the Neurological Sciences
Cristina Castro-Fernández, Manuel Arias, Patricia Blanco-Arias, Luis Santomé-Collazo, Jorge Amigo, Ángel Carracedo, Maria-Jesús Sobrido
Next generation sequencing (NGS) is transforming the diagnostic approach for neurological disorders, since it allows simultaneous analysis of hundreds of genes, even based on just a broad, syndromic patient categorization. However, such an approach bears a high risk of incidental and uncertain genetic findings. We report a patient with spastic paraplegia whose comprehensive neurological and imaging examination raised a high clinical suspicion of SPG11. Thus, although our NGS pipeline for this group of disorders includes gene panel and exome sequencing, in this sample only the spatacsin gene region was captured and subsequently searched for mutations...
June 1, 2015: Applied & Translational Genomics
M Masciullo, A Tessa, S Perazza, F M Santorelli, A Perna, G Silvestri
We describe a novel sporadic case of SPG56, a rare complicated form of HSP, that expands the clinical and molecular spectrum of the disease, being associated to novel mutations in CYP2U1 and showing as novel feature dorsal hydromyelia at spinal cord MRI. The patient presented an early-onset, slowly progressive paraparesis associated with mild mental retardation. Neurological assessments included the Spastic Paraplegia Rating Scale (SPRS), Mental Deterioration Battery (MDB), and Wechsler Adult Intelligence Scale (WAIS), neurophysiological and neuroimaging studies...
May 2016: European Journal of Paediatric Neurology: EJPN
Cristina Dallabona, Truus E M Abbink, Rosalba Carrozzo, Alessandra Torraco, Andrea Legati, Carola G M van Berkel, Marcello Niceta, Tiziana Langella, Daniela Verrigni, Teresa Rizza, Daria Diodato, Fiorella Piemonte, Eleonora Lamantea, Mingyan Fang, Jianguo Zhang, Diego Martinelli, Elsa Bevivino, Carlo Dionisi-Vici, Adeline Vanderver, Sunny G Philip, Manju A Kurian, Ishwar C Verma, Sunita Bijarnia-Mahay, Sandra Jacinto, Fatima Furtado, Patrizia Accorsi, Anna Ardissone, Isabella Moroni, Ileana Ferrero, Marco Tartaglia, Paola Goffrini, Daniele Ghezzi, Marjo S van der Knaap, Enrico Bertini
This study focused on the molecular characterization of patients with leukoencephalopathy associated with a specific biochemical defect of mitochondrial respiratory chain complex III, and explores the impact of a distinct magnetic resonance imaging pattern of leukoencephalopathy to detect biallelic mutations in LYRM7 in patients with biochemically unclassified leukoencephalopathy. 'Targeted resequencing' of a custom panel including genes coding for mitochondrial proteins was performed in patients with complex III deficiency without a molecular genetic diagnosis...
March 2016: Brain: a Journal of Neurology
Kamel Jabbari, Peter Nürnberg
Epilepsy is a common complex disorder most frequently associated with psychiatric and neurological diseases. Massive parallel sequencing of individual or cohort genomes and exomes led the identification of several disease associated genes. We review here the candidate genes in epilepsy genetics with focus on exome and gene panel data. Together with the examination of brain expressed genes and post synaptic proteome the results show that: (1) Non-metabolic epilepsies and autism candidate genes tend to be AT-rich and (2) large transcript size and local AT-richness are characteristic features of genes involved in developmental brain disorders and synaptic functions...
July 2016: Genomics
(no author information available yet)
BACKGROUND: The discovery of disease-associated loci through genome-wide association studies (GWAS) is the leading genetic approach to the identification of novel biological pathways underlying diseases in humans. Until recently, GWAS in ischaemic stroke have been limited by small sample sizes and have yielded few loci associated with ischaemic stroke. We did a large-scale GWAS to identify additional susceptibility genes for stroke and its subtypes. METHODS: To identify genetic loci associated with ischaemic stroke, we did a two-stage GWAS...
December 18, 2015: Lancet Neurology
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