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1. Vestibulo-ocular reflex assessed with Video Head Impulse Test in children with Vestibular Migraine: Our experience

Author

Oliver Haag, Maria Antonia Claveria, Victoria Rivero de Jesús, Rosana Rodríguez-Villalba, Miguel Caballero-Borrego, and Vanessa Villarraga

Subjects
Male, medicine.medical_specialty, Adolescent, genetic structures, Migraine Disorders, Audiology, Asymptomatic, Vestibular migraine, 03 medical and health sciences, 0302 clinical medicine, 030225 pediatrics, otorhinolaryngologic diseases, Humans, Medicine, Prospective Studies, Child, 030223 otorhinolaryngology, Head Impulse Test, Vestibular system, business.industry, Head impulse test, Reflex, Vestibulo-Ocular, General Medicine, Otorhinolaryngology, Case-Control Studies, Pediatrics, Perinatology and Child Health, Reflex, Female, sense organs, Vestibulo–ocular reflex, medicine.symptom, Presentation (obstetrics), business
Abstract

Vestibular Migraine in children can mimic other disorders, especially at presentation. Outcome is hard to predict and management may be challenging due to the fact that many of the patients are too young to describe their symptoms and these are not always accompanied by headache. Objective To assess vestibulo-ocular reflex (VOR) in pediatric patients who meet criteria for defined Vestibular Migraine and to compare results to healthy controls. Methods Twenty-one patients aged 11–16 years were included in this prospective multicentric study. VOR was assessed using the video Head Impulse Test by EyeSeeCam®(Interacoustics, Denmark). Results Patients with Vestibular Migraine (VM) have higher values of gain compared to asymptomatic patients. Conclusion Video Head Impulse Test (vHIT) is a useful and relatively fast-to-perform examination in children compared to other vestibular tests. Patients with VM seem to have higher values of gain at vHIT.

Published
2020
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2. An innovative strategy for the molecular diagnosis of Usher syndrome identifies causal biallelic mutations in 93% of European patients

Author

Christine Petit, Eberhart Zrenner, Shzeena Dad, Martina Jarc-Vidmar, Maria Antonia Claveria, Alberto Auricchio, Ana Fakin, Marko Hawlina, Gaelle M. Lefèvre, Susanne Kohl, Anne Kurtenbach, Aziz El-Amraoui, Loreto Martorell Sampol, Jesus Rodriguez Jorge, Ditta Zobor, Saddek Mohand-Said, Crystel Bonnet, Ieva Sliesoraityte, Charles Marcaillou, Francesco Testa, Saba Battelino, Jaume Mora, Mélanie Letexier, José-Alain Sahel, Francesca Simonelli, Lisbeth Birk Møller, Sandra Chantot-Bastaraud, Jean-Pierre Hardelin, Isabelle Audo, Zied Riahi, Andrej Zupan, Luce Smagghe, Amrit Singh-Estivalet, Damjan Glavač, Souad Gherbi, Sandro Banfi, Sandrine Marlin, Institut de la Vision, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), IntegraGen SA, Génétique et Physiologie de l'Audition, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut Pasteur [Paris] (IP)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier National d'Ophtalmologie des Quinze-Vingts (CHNO), University of Tuebingen, Centre de référence des Surdités Génétiques [CHU Necker, Paris], CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), University of Naples Federico II = Università degli studi di Napoli Federico II, Telethon Institute of Genetics and Medicine = Istituto Telethon di Genetica e Medicina (TIGEM), Seconda Università degli Studi di Napoli = Second University of Naples, University Medical Centre Ljubljana [Ljubljana, Slovenia] (UMCL), University of Ljubljana, Hospital Sant Joan de Déu [Barcelona], Kennedy Center, Collège de France - Chaire Génétique et physiologie cellulaire, Collège de France (CdF (institution)), This work was supported by the European Union Seventh Framework Programme under the grant agreement HEALTH-F2-2010-242013 (TREATRUSH), ANR-15-RHUS-001 (LIGHT4DEAF), LHW-Stiftung, Fondation Raymonde & Guy Strittmatter, FAUN Stiftung, Conny Maeva Charitable Foundation, Fondation Orange, Fondation BNP Paribas, LABEX Lifesenses [ANR-10-LABX-65], 'the Foundation Fighting Blindness Paris Center Grant', and the Slovenian research agency (ARRS P3-0333)., We are grateful to the patients and their families for their participation in the study. DNA samples included in this study originated from the NeuroSensCol** DNA bank, part of the BioCollections network for research in neuroscience (PI: JA Sahel, co-PI: I Audo, in partnership with the CHNO des Quinze-Vingts, Inserm and the CNRS), and the Tuebingen RetDis biobank (PI: B Wissinger, co-PI S Kohl)., ANR-15-RHUS-0001,LIGHT4DEAF,ECLAIRER LA SURDITÉ : UNE APPROCHE HOLISTIQUE DU SYNDROME D'USHER(2015), ANR-10-LABX-0065,LIFESENSES,DES SENS POUR TOUTE LA VIE(2010), European Project: 242013,EC:FP7:HEALTH,FP7-HEALTH-2009-single-stage,TREATRUSH(2010), Bonnet, Crystel, ECLAIRER LA SURDITÉ : UNE APPROCHE HOLISTIQUE DU SYNDROME D'USHER - - LIGHT4DEAF2015 - ANR-15-RHUS-0001 - RHUS - VALID, DES SENS POUR TOUTE LA VIE - - LIFESENSES2010 - ANR-10-LABX-0065 - LABX - VALID, Fighting blindness of Usher syndrome: diagnosis, pathogenesis and retinal treatment (TreatRetUsher) - TREATRUSH - - EC:FP7:HEALTH2010-02-01 - 2014-01-31 - 242013 - VALID, Riahi, Zied, Chantot Bastaraud, Sandra, Smagghe, Luce, Letexier, Mélanie, Marcaillou, Charle, Lefèvre, Gaëlle M, Hardelin, Jean Pierre, El Amraoui, Aziz, Singh Estivalet, Amrit, Mohand Saïd, Saddek, Kohl, Susanne, Kurtenbach, Anne, Sliesoraityte, Ieva, Zobor, Ditta, Gherbi, Souad, Testa, Francesco, Simonelli, Francesca, Banfi, Sandro, Fakin, Ana, Glavač, Damjan, Jarc Vidmar, Martina, Zupan, Andrej, Battelino, Saba, Martorell Sampol, Loreto, Claveria, Maria Antonia, Catala Mora, Jaume, Dad, Shzeena, Møller, Lisbeth B, Rodriguez Jorge, Jesu, Hawlina, Marko, Auricchio, Alberto, Sahel, José Alain, Marlin, Sandrine, Zrenner, Eberhart, Audo, Isabelle, Petit, Christine, Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Pasteur [Paris]-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre de référence des Surdités Génétiques, University of Naples Federico II, Seconda Università degli studi di Napoli, and Chaire Génétique et physiologie cellulaire

Subjects
0301 basic medicine, MESH: Extracellular Matrix Proteins, MESH: Sequence Analysis, DNA, Usher syndrome, [SDV]Life Sciences [q-bio], Bioinformatics, 0302 clinical medicine, Exome, Exome sequencing, Genetics (clinical), Genetics, Comparative Genomic Hybridization, Extracellular Matrix Proteins, MESH: Exome, medicine.diagnostic_test, MESH: Genetic Testing, 3. Good health, Europe, [SDV] Life Sciences [q-bio], Medical genetics, MESH: Genes, Modifier, Usher Syndromes, medicine.medical_specialty, MESH: Mutation, Genetic counseling, Biology, Sensitivity and Specificity, Article, 03 medical and health sciences, Molecular genetics, medicine, otorhinolaryngologic diseases, Humans, Genetic Testing, MESH: Usher Syndromes, Alleles, Genetic testing, Genes, Modifier, MESH: Humans, Genetic heterogeneity, MESH: Alleles, Sequence Analysis, DNA, medicine.disease, MESH: Sensitivity and Specificity, MESH: Comparative Genomic Hybridization, 030104 developmental biology, Mutation, 030221 ophthalmology & optometry, MESH: Europe
Abstract

International audience; Usher syndrome (USH), the most prevalent cause of hereditary deafness-blindness, is an autosomal recessive and genetically heterogeneous disorder. Three clinical subtypes (USH1-3) are distinguishable based on the severity of the sensorineural hearing impairment, the presence or absence of vestibular dysfunction, and the age of onset of the retinitis pigmentosa. A total of 10 causal genes, 6 for USH1, 3 for USH2, and 1 for USH3, and an USH2 modifier gene, have been identified. A robust molecular diagnosis is required not only to improve genetic counseling, but also to advance gene therapy in USH patients. Here, we present an improved diagnostic strategy that is both cost- and time-effective. It relies on the sequential use of three different techniques to analyze selected genomic regions: targeted exome sequencing, comparative genome hybridization, and quantitative exon amplification. We screened a large cohort of 427 patients (139 USH1, 282 USH2, and six of undefined clinical subtype) from various European medical centers for mutations in all USH genes and the modifier gene. We identified a total of 421 different sequence variants predicted to be pathogenic, about half of which had not been previously reported. Remarkably, we detected large genomic rearrangements, most of which were novel and unique, in 9% of the patients. Thus, our strategy led to the identification of biallelic and monoallelic mutations in 92.7% and 5.8% of the USH patients, respectively. With an overall 98.5% mutation characterization rate, the diagnosis efficiency was substantially improved compared with previously reported methods.

Published
2016
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