1. Frequency of the C9orf72 hexanucleotide repeat expansion in patients with amyotrophic lateral sclerosis and frontotemporal dementia: a cross-sectional study
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Majounie, E1, Renton, Ae, Mok, K, Dopper, Eg, Waite, A, Rollinson, S, Chiò, A, Restagno, G, Nicolaou, N, Simon-Sanchez, J, van Swieten JC, Abramzon, Y, Johnson, Jo, Sendtner, M, Pamphlett, R, Orrell, Rw, Mead, S, Sidle, Kc, Houlden, H, Rohrer, Jd, Morrison, Ke, Pall, H, Talbot, K, Ansorge, O, Hernandez, Dg, Arepalli, S, Sabatelli, M, Mora, G, Corbo, M, Giannini, F, Calvo, A, Englund, E, Borghero, G, Floris, Gl, Remes, Am, Laaksovirta, H, Mccluskey, L, Trojanowski, Jq, Van Deerlin VM, Schellenberg, Gd, Nalls, Ma, Drory, Ve, Lu, Cs, Yeh, Th, Ishiura, H, Takahashi, Y, Tsuji, S, Le Ber, I, Brice, A, Drepper, C, Williams, N, Kirby, J, Shaw, P, Hardy, J, Tienari, Pj, Heutink, P, Morris, Hr, Pickering-Brown, S, Traynor, Bj, Adamson, G, Bayer, Aj, Beck, J, Callister, Jb, Blake, Dj, Blumen, Sc, Collinge, J, Dunckley, T, Ealing, J, East, S, Elman, L, Gerhard, A, Guerreiro, Rj, Gwinn, K, Halliwell, N, Hamdalla, Hh, Hewitt, C, Ince, P, Jablonka, S, James, C, Kent, L, Knock, Jc, Lynch, T, Mahoney, C, Mann, D, Neal, J, Norris, D, O'Dowd, S, Richardson, A, Rossor, M, Rothstein, J, Scholz, Sw, Snowden, J, Stephan, Da, Toulson, G, Turner, Mr, Warren, Jd, Young, K, Weng, Yh, Kuo, Hc, Lai, Sc, Huang, Cl, Camuzat, A, Entraingues, L, Guillot-Noël, Verpillat, P, Blanc, F, Camu, W, Clerget-Darpoux, F, Corcia, P, Couratier, P, Didic, M, Dubois, B, Duyckaerts, C, Guedj, E, Golfier, V, Habert, Mo, Hannequin, D, Lacomblez, L, Meininger, V, Salachas, F, Levy, R, Michel, Bf, Pasquier, F, Puel, M, Thomas-Anterion, C, Sellal, F, Vercelletto, M, Moglia, C, Cammarosano, S, Canosa, A, Gallo, S, Brunetti, M, Ossola, I, Marinou, K, Papetti, L, Pisano, F, Pinter, Gl, Conte, A, Luigetti, M, Zollino, M, Lattante, S, Marangi, G, la Bella, V, Spataro, R, Colletti, T, Battistini, S, Ricci, C, Caponnetto, C, Mancardi, G, Mandich, P, Salvi, F, Bartolomei, I, Mandrioli, J, Sola, P, Lunetta, C, Penco, S, Monsurrò, Mr, Tedeschi, G, Conforti, Fl, Gambardella, A, Quattrone, A, Volanti, P, Floris, G, Cannas, A, Piras, V, Marrosu, F, Marrosu, Mg, Murru, Mr, Pugliatti, M, Parish, Ld, Sotgiu, A, Solinas, G, Ulgheri, L, Ticca, A, Simone, I, Logroscino, G., Neurology, Erasmus MC other, The Chromosome 9-ALS/FTD Consortium, Human genetics, NCA - Neurodegeneration, Università degli studi di Torino (UNITO), Department of Clinical Genetics, Institute for Clinical Neurobiology, Julius-Maximilians-Universität Würzburg [Wurtzbourg, Allemagne] (JMU), MRC Prion Unit, UCL Institute of neurology, UCL Institute of Neurology, UCL Institute of Neurology, Queen Square, London, Department of Neuroscience, Catholic University, Roma, Fondazione Maugeri, Department of Neuroscience, University of Siena, Siena, Department of Neurology, Chang Gung Memorial Hospital [Taipei] (CGMH), Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière (CRICM), 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), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Institute of Psychological Medicine and Clinical Neurosciences, Cardiff University, MRC Centre for Neuropsychiatric Genetics and Genomics, Medical Research Council (MRC)-School of Medicine [Cardiff], Cardiff University-Institute of Medical Genetics [Cardiff]-Cardiff University-Institute of Medical Genetics [Cardiff], Neuroépidémiologie Tropicale (NET), CHU Limoges-Institut d'Epidémiologie Neurologique et de Neurologie Tropicale-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Génomique, Environnement, Immunité, Santé, Thérapeutique (GEIST), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Università degli studi di Torino = University of Turin (UNITO), Julius-Maximilians-Universität Würzburg (JMU), UCL Institute of Neurology, Queen Square [London], Università degli Studi di Siena = University of Siena (UNISI), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)
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MESH: Signal Transduction ,Male ,MESH: Vesicular Transport Proteins ,MESH: Membrane Glycoproteins ,MESH: DNA Repeat Expansion ,MESH: Genotype ,Cohort Studies ,MESH: Protein Structure, Tertiary ,MESH: Aged, 80 and over ,MESH: Interferon Regulatory Factor-3 ,0302 clinical medicine ,C9orf72 ,MESH: Child ,MESH: RNA, Small Interfering ,80 and over ,genetics ,Age of Onset ,Child ,MESH: Cohort Studies ,MESH: Amyotrophic Lateral Sclerosis ,MESH: Aged ,Genetics ,Aged, 80 and over ,0303 health sciences ,MESH: Middle Aged ,DNA Repeat Expansion ,MESH: Toll-Like Receptor 4 ,Middle Aged ,Penetrance ,3. Good health ,Settore MED/26 - NEUROLOGIA ,Neurology ,MESH: Young Adult ,MESH: HEK293 Cells ,Child, Preschool ,Frontotemporal Dementia ,Female ,Sample collection ,Chromosomes, Human, Pair 9 ,MESH: Myeloid Differentiation Factor 88 ,Frontotemporal dementia ,Human ,Pair 9 ,Adult ,MESH: Protein Transport ,medicine.medical_specialty ,Adolescent ,Genotype ,MESH: Age of Onset ,MESH: RNA Interference ,Clinical Neurology ,MESH: Frontotemporal Dementia ,MESH: Genetic Loci ,TARDBP ,Chromosomes ,03 medical and health sciences ,Open Reading Frames ,Young Adult ,MESH: Cross-Sectional Studies ,Internal medicine ,medicine ,MESH: Chemokine CCL5 ,Humans ,ddc:610 ,Preschool ,MESH: Adaptor Proteins, Signal Transducing ,030304 developmental biology ,Aged ,MESH: Adolescent ,MESH: Humans ,business.industry ,MESH: Transfection ,MESH: Child, Preschool ,Haplotype ,Amyotrophic Lateral Sclerosis ,MESH: Adult ,MESH: Adaptor Proteins, Vesicular Transport ,MESH: Open Reading Frames ,medicine.disease ,MESH: Male ,MESH: Cell Line ,C9orf72 Protein ,Cross-Sectional Studies ,MESH: Endosomes ,Genetic Loci ,[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie ,Neurology (clinical) ,MESH: Lipopolysaccharides ,MESH: Chromosomes, Human, Pair 9 ,business ,Trinucleotide repeat expansion ,MESH: Female ,Adolescent, Adult, Age of Onset, Aged, Aged ,80 and over, Amyotrophic Lateral Sclerosis ,genetics, Child, Child ,Preschool, Chromosomes ,genetics, Cohort Studies, Cross-Sectional Studies, DNA Repeat Expansion ,genetics, Female, Frontotemporal Dementia ,genetics, Genetic Loci, Genotype, Humans, Male, Middle Aged, Open Reading Frames ,genetics, Young Adult ,030217 neurology & neurosurgery - Abstract
International audience; BACKGROUND: We aimed to accurately estimate the frequency of a hexanucleotide repeat expansion in C9orf72 that has been associated with a large proportion of cases of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD). METHODS: We screened 4448 patients diagnosed with ALS (El Escorial criteria) and 1425 patients with FTD (Lund-Manchester criteria) from 17 regions worldwide for the GGGGCC hexanucleotide expansion using a repeat-primed PCR assay. We assessed familial disease status on the basis of self-reported family history of similar neurodegenerative diseases at the time of sample collection. We compared haplotype data for 262 patients carrying the expansion with the known Finnish founder risk haplotype across the chromosomal locus. We calculated age-related penetrance using the Kaplan-Meier method with data for 603 individuals with the expansion. FINDINGS: In patients with sporadic ALS, we identified the repeat expansion in 236 (7*0%) of 3377 white individuals from the USA, Europe, and Australia, two (4*1%) of 49 black individuals from the USA, and six (8*3%) of 72 Hispanic individuals from the USA. The mutation was present in 217 (39*3%) of 552 white individuals with familial ALS from Europe and the USA. 59 (6*0%) of 981 white Europeans with sporadic FTD had the mutation, as did 99 (24*8%) of 400 white Europeans with familial FTD. Data for other ethnic groups were sparse, but we identified one Asian patient with familial ALS (from 20 assessed) and two with familial FTD (from three assessed) who carried the mutation. The mutation was not carried by the three Native Americans or 360 patients from Asia or the Pacific Islands with sporadic ALS who were tested, or by 41 Asian patients with sporadic FTD. All patients with the repeat expansion had (partly or fully) the founder haplotype, suggesting a one-off expansion occurring about 1500 years ago. The pathogenic expansion was non-penetrant in individuals younger than 35 years, 50% penetrant by 58 years, and almost fully penetrant by 80 years. INTERPRETATION: A common Mendelian genetic lesion in C9orf72 is implicated in many cases of sporadic and familial ALS and FTD. Testing for this pathogenic expansion should be considered in the management and genetic counselling of patients with these fatal neurodegenerative diseases. FUNDING: Full funding sources listed at end of paper (see Acknowledgments).
- Published
- 2012
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