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1. TBK1 is associated with ALS and ALS-FTD in Sardinian patients.

Author

Borghero G, Pugliatti M, Marrosu F, Marrosu MG, Murru MR, Floris G, Cannas A, Occhineri P, Cau TB, Loi D, Ticca A, Traccis S, Manera U, Canosa A, Moglia C, Calvo A, Barberis M, Brunetti M, Gibbs JR, Renton AE, Errichiello E, Zoledziewska M, Mulas A, Qian Y, Din J, Pliner HA, Traynor BJ, and Chiò A

Subjects
Aged, Cohort Studies, Female, Humans, Italy, Male, Amyotrophic Lateral Sclerosis genetics, Frontotemporal Dementia genetics, Genetic Association Studies, Mutation, Protein Serine-Threonine Kinases
Abstract

Recently, mutations in the TANK-binding kinase 1 (TBK1) gene were identified as a cause for amyotrophic lateral sclerosis (ALS) with or without comorbid frontotemporal dementia. We have assessed the frequency and clinical characteristics of TBK1 mutations in a cohort of ALS patients of Sardinian ancestry. Whole-exome sequencing was performed on Hiseq2000 platform (Illumina). Genome analysis Toolkit was used to align and to code variants according to Human Genome (UCSC hg19). Mutation was confirmed with Sanger sequence. In our screening of 186 Sardinian ALS cases, we found 3 (1.6%) patients carrying 3 distinct novel genetic variants: a nonsynonymous SNV c.1150C>T leading to a p.Arg384Thr change in exon 9; a nonsynonymous SNV c.1331G>A causes a p.Arg444Gln change in exon 11; and a frameshift deletion c.2070delG (p.Met690fs) at the exon 20 of the gene leading to a stop at 693 codon. The latter patients also carried missense mutation c.98C>T of the SQSTM1 gene causing a substitution of an arginine with a valine at the position 33 (p.Arg33Val). All variants were found to be deleterious according to in silico predictions. All cases were apparently sporadic and one of them showed frontotemporal dementia associated to ALS. These mutations were not found in 2 cohorts of 6780 ethnic-matched controls. We have found that TBK1 mutations account for 1.6% of Sardinian ALS cases. Our data support the notion that TBK1 is a novel ALS gene, providing important evidence complementary to the first descriptions., (Copyright © 2016 Elsevier Inc. All rights reserved.)

Published
2016
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2. Phenotypic variability related to C9orf72 mutation in a large Sardinian kindred.

Author

Floris G, Borghero G, Di Stefano F, Melis R, Puddu R, Fadda L, Murru MR, Corongiu D, Cuccu S, Tranquilli S, Cannas A, Marrosu MG, Chiò A, and Marrosu F

Subjects
Aged, Amyotrophic Lateral Sclerosis diagnostic imaging, Ataxin-2 genetics, C9orf72 Protein, Cohort Studies, Female, Frontotemporal Dementia complications, Frontotemporal Dementia diagnostic imaging, Genotype, Humans, Italy epidemiology, Magnetic Resonance Imaging, Male, Middle Aged, Parkinsonian Disorders etiology, Phenotype, tau Proteins genetics, Amyotrophic Lateral Sclerosis genetics, Family Health, Frontotemporal Dementia genetics, Mutation genetics, Proteins genetics
Abstract

We investigated intrafamilial phenotypic variability in carriers of the C9orf72 mutation, analysing clinical, neuropsychological and imaging characteristics of various members from a large Sardinian kindred with FTD or ALS. We compared these with those of C9 + patients in our ALS and FTD cohorts. Results showed that three patients carried the C9orf72 mutation: two with ALS and one with FTD and Parkinsonism. C9 + patients in our bvFTD Sardinian cohort had a higher frequency of Parkinsonism than non-mutated patients (75% vs. 36.3%, p <0.02). Parkinsonism was present in 2.7% of our ALS cohort and 3.3% of the C9 + patients. The prevalence of Parkinsonism in C9 + patients in the bvFTD and ALS cohorts showed a statistically significant difference (p <0.006). In conclusion, Parkinsonism was frequently associated with FTD but not ALS in a large Sardinian family, a finding reflected in the wider C9orf72 associated Sardinian ALS and FTD populations.

Published
2016
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3. Constructional apraxia in frontotemporal dementia associated with the C9orf72 mutation: broadening the clinical and neuropsychological phenotype.

Author

Floris G, Borghero G, Cannas A, Di Stefano F, Ruiu E, Murru MR, Corongiu D, Cuccu S, Tranquilli S, Sardu C, Marrosu MG, Chiò A, and Marrosu F

Subjects
Aged, Brain diagnostic imaging, C9orf72 Protein, Cohort Studies, Female, Frontotemporal Dementia diagnostic imaging, Genetic Association Studies, Genotype, Humans, Male, Middle Aged, Neuropsychological Tests, Perceptual Disorders etiology, Perceptual Disorders genetics, Phenotype, Photic Stimulation, Tomography, Emission-Computed, Single-Photon, Apraxias etiology, Apraxias genetics, Frontotemporal Dementia complications, Frontotemporal Dementia genetics, Mutation genetics, Proteins genetics
Abstract

In our study we analysed clinical and neuropsychological data in a cohort of 57 Sardinian patients with FTD (55 apparently unrelated and two belonging to the same family), who underwent genetic screening for the C9orf72 mutation. Eight out of 56 patients were found positive for the C9orf72 mutation representing 14% of the entire cohort and 31.6% of the familial cases (6/19). C9orf72 mutated patients differed from the other FTD cases of the cohort for a younger age of onset, higher frequency of familial history for FTD and higher prevalence of delusional psychotic symptoms and hallucinations. In the neuropsychological assessment, C9orf72 mutated patients differed from non-mutated for the high frequency of visuospatial dysfunction regarding constructional apraxia (p = 0.02). In conclusion, our study confirms that Sardinian FTD patients have peculiar genetic characteristics and that C9orf72 mutated patients have a distinctive clinical and neuropsychological profile that could help differentiate them from other FTD patients. In our cohort we found that constructional apraxia, rarely reported in FTD, can properly discriminate between C9orf72 mutated and non-mutated patients and contribute to broaden the neuropsychological profile in frontotemporal dementia associated with this mutation.

Published
2015
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4. Clinical phenotypes and radiological findings in frontotemporal dementia related to TARDBP mutations.

Author

Floris G, Borghero G, Cannas A, Di Stefano F, Murru MR, Corongiu D, Cuccu S, Tranquilli S, Cherchi MV, Serra A, Loi G, Marrosu MG, Chiò A, and Marrosu F

Subjects
Adult, Aged, Female, Humans, Male, Middle Aged, Pedigree, Phenotype, Amyotrophic Lateral Sclerosis genetics, Amyotrophic Lateral Sclerosis pathology, DNA-Binding Proteins genetics, Frontotemporal Dementia genetics, Frontotemporal Dementia pathology, Mutation
Abstract

It has been shown that different genes could be associated with distinctive clinical and radiological phenotypes of FTD. TARDBP gene has been described worldwide in few cases of FTD so its phenotype is still unclear. The objective is to study the clinical and radiological characteristics of TARDBP-related FTD. In the present study, we report clinical, neuropsychological and radiological features of five new Sardinian non-related cases of FTD carriers of the p.A382T TARDBP mutation. Furthermore, we reviewed non-related FTD cases with TARDBP mutations previously described in literature. The p.A382T missense mutation of TARDBP was present in the 21.7 % of familial cases of our FTD cohort (5/23) and in no one of the sporadic patients. 3 of 5 patients showed a temporal variant FTD and 4/5 a predominant temporal involvement at MRI. The review of the literature of FTD cases with TARDBP mutations showed that in 5 of 16 cases, the clinical phenotype was consistent with temporal variant of FTD or semantic dementia (31 %) and in 7 of 16 cases neuroimaging showed predominant temporal lobe involvement (43.7 %). Our study further supports the pathogenetic role of TARDBP mutations in pure FTD and in the full spectrum of FTD/ALS. The presence of a predominant temporal lobe involvement in a high percentage of FTD mutated patients with a peculiar clinical pattern could be useful in the differential diagnosis with other forms of dementia/FTD both sporadic and familial.

Published
2015
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6. Bipolar affective disorder preceding frontotemporal dementia in a patient with C9ORF72 mutation: is there a genetic link between these two disorders?

Author

Floris G, Borghero G, Cannas A, Stefano FD, Murru MR, Corongiu D, Cuccu S, Tranquilli S, Marrosu MG, Chiò A, and Marrosu F

Subjects
Bipolar Disorder complications, Bipolar Disorder diagnostic imaging, Bipolar Disorder pathology, Brain diagnostic imaging, Brain pathology, C9orf72 Protein, Frontotemporal Dementia complications, Frontotemporal Dementia diagnostic imaging, Frontotemporal Dementia pathology, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Radiopharmaceuticals, Technetium Tc 99m Exametazime, Tomography, Emission-Computed, Single-Photon, Bipolar Disorder genetics, Frontotemporal Dementia genetics, Mutation genetics, Proteins genetics
Published
2013
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7. Frontotemporal dementia with psychosis, parkinsonism, visuo-spatial dysfunction, upper motor neuron involvement associated to expansion of C9ORF72: a peculiar phenotype?

Author

Floris G, Borghero G, Cannas A, Di Stefano F, Costantino E, Murru MR, Brunetti M, Restagno G, Traynor BJ, Marrosu MG, Chiò A, and Marrosu F

Subjects
Apraxias complications, Apraxias diagnosis, Apraxias genetics, C9orf72 Protein, DNA Repeat Expansion genetics, Frontotemporal Dementia complications, Frontotemporal Dementia diagnosis, Humans, Male, Middle Aged, Motor Neurons pathology, Parkinsonian Disorders complications, Parkinsonian Disorders diagnosis, Psychotic Disorders complications, Psychotic Disorders diagnosis, Vision Disorders complications, Vision Disorders diagnosis, Frontotemporal Dementia genetics, Parkinsonian Disorders genetics, Phenotype, Proteins genetics, Psychotic Disorders genetics, Vision Disorders genetics
Published
2012
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8. ALS/FTD phenotype in two Sardinian families carrying both C9ORF72 and TARDBP mutations.

Author

Chiò A, Restagno G, Brunetti M, Ossola I, Calvo A, Canosa A, Moglia C, Floris G, Tacconi P, Marrosu F, Marrosu MG, Murru MR, Majounie E, Renton AE, Abramzon Y, Pugliatti M, Sotgiu MA, Traynor BJ, and Borghero G

Subjects
Adult, Amyotrophic Lateral Sclerosis complications, Amyotrophic Lateral Sclerosis epidemiology, C9orf72 Protein, DNA Repeat Expansion genetics, Family, Female, Frontotemporal Dementia complications, Frontotemporal Dementia epidemiology, Haplotypes, Humans, Italy epidemiology, Male, Middle Aged, Mutation, Missense genetics, Pedigree, Phenotype, Amyotrophic Lateral Sclerosis genetics, DNA-Binding Proteins genetics, Frontotemporal Dementia genetics, Proteins genetics
Abstract

Background: In the isolated population of Sardinia, a Mediterranean island, ∼25% of ALS cases carry either a p.A382T mutation of the TARDBP gene or a GGGGCC hexanucleotide repeat expansion in the first intron of the C9ORF72 gene., Objective: To describe the co-presence of two genetic mutations in two Sardinian ALS patients., Methods: We identified two index ALS cases carrying both the p.A382T missense mutation of TARDBP gene and the hexanucleotide repeat expansion of C9ORF72 gene., Results: The index case of Family A had bulbar ALS and frontemporal dementia (FTD) at 43. His father, who carried the hexanucleotide repeat expansion of C9ORF72 gene, had spinal ALS and FTD at 64 and his mother, who carried the TARDBP gene p.A382T missense mutation, had spinal ALS and FTD at 69. The index case of Family B developed spinal ALS without FTD at 35 and had a rapid course to respiratory failure. His parents are healthy at 62 and 63. The two patients share the known founder risk haplotypes across both the C9ORF72 9p21 locus and the TARDBP 1p36.22 locus., Conclusions: Our data show that in rare neurodegenerative causing genes can co-exist within the same individuals and are associated with a more severe disease course.

Published
2012
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9. A patient carrying a homozygous p.A382T TARDBP missense mutation shows a syndrome including ALS, extrapyramidal symptoms, and FTD.

Author

Borghero G, Floris G, Cannas A, Marrosu MG, Murru MR, Costantino E, Parish LD, Pugliatti M, Ticca A, Traynor BJ, Calvo A, Cammarosano S, Moglia C, Cistaro A, Brunetti M, Restagno G, and Chiò A

Subjects
Amyotrophic Lateral Sclerosis complications, Amyotrophic Lateral Sclerosis diagnosis, Basal Ganglia Diseases complications, Basal Ganglia Diseases diagnosis, Frontotemporal Dementia complications, Frontotemporal Dementia diagnosis, Homozygote, Humans, Male, Middle Aged, Pedigree, Syndrome, Amyotrophic Lateral Sclerosis genetics, Basal Ganglia Diseases genetics, DNA-Binding Proteins genetics, Frontotemporal Dementia genetics, Heterozygote, Mutation, Missense genetics
Abstract

We have recently published data showing that a founder mutation of the TARDBP gene (p.A382T) accounts for approximately one third of amyotrophic lateral sclerosis (ALS) cases on the Mediterranean island of Sardinia (Chiò et al., 2011). In that report, we identified a 53-year-old man carrying a homozygous A382T missense mutation of the TARDBP gene with a complex neurological syndrome including amyotrophic lateral sclerosis, parkinsonian features, motor and vocal tics, and frontotemporal dementia (FTD). Due to the uniqueness of this case, here we provide a detailed clinical description, as well as neurophysiological, neuropsychological, and neuroimaging data for that case and his extended family., (Copyright © 2011 Elsevier Inc. All rights reserved.)

Published
2011
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10. Frequency of the C9orf72 hexanucleotide repeat expansion in patients with amyotrophic lateral sclerosis and frontotemporal dementia: a cross-sectional study

Author

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)

Subjects
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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11. Clinical characteristics of patients with familial amyotrophic lateral sclerosis carrying the pathogenic GGGGCC hexanucleotide repeat expansion of C9ORF72

Author

Chiò, A1, Borghero, G, Restagno, G, Mora, G, Drepper, C, Traynor, Bj, Sendtner, M, Brunetti, M, Ossola, I, Calvo, A, Pugliatti, M, Sotgiu, Ma, Murru, Mr, Marrosu, Mg, Marrosu, F, Marinou, K, Mandrioli, J, Sola, P, Caponnetto, C, Mancardi, G, Mandich, P, La Bella, V, Spataro, R, Conte, A, Monsurrò, Mr, Tedeschi, G, Pisano, F, Bartolomei, I, Salvi, F, Lauria Pinter, G, Simone, I, Logroscino, G, Gambardella, A, Quattrone, A, Lunetta, C, Volanti, P, Zollino, M, Penco, S, Battistini, S, Renton, Ae, Majounie, E, Abramzon, Y, Conforti, Fl, Giannini, F, Corbo, M, Sabatelli, M, Moglia, C, Cammarosano, S, Fuda, G, Canosa, A, Gallo, S, Papetti, L, Luigetti, M, Lattante, S, Marangi, G, Colletti, T, Ricci, C, Origone, P, Floris, G, Cannas, A, Piras, V, Parish, Ld, Solinas, G, Ulgheri, L, Ticca, A, Izzo, F, Laiola, A, Trojsi, F., Chiò, A, Borghero, G, Restagno, G, Mora, G, Drepper, C, Traynor, Bj, Sendtner, M, Brunetti, M, Ossola, I, Calvo, A, Pugliatti, M, Sotgiu, Ma, Murru, Mr, Marrosu, Mg, Marrosu, F, Marinou, K, Mandrioli, J, Sola, P, Caponnetto, C, Mancardi, G, Mandich, P, La Bella, V, Spataro, R, Conte, A, Monsurro', Maria Rosaria, Tedeschi, Gioacchino, Pisano, F, Bartolomei, I, Salvi, F, Lauria Pinter, G, Simone, I, Logroscino, G, Gambardella, A, Quattrone, A, Lunetta, C, Volanti, P, Zollino, M, Penco, S, Battistini, S, the ITALSGEN consortium: Moglia, Cristina, Cammarosano, Stefania, Fuda, Giuseppe, Canosa, Antonio, Gallo, Sara, Papetti, Laura, Luigetti, Marco, Lattante, Serena, Marangi, Giuseppe, Colletti, Tiziana, Ricci, Claudia, Origone, Paola, Floris, Gianluca, Cannas, Antonino, Piras, Valeria, Parish, Leslie D, Solinas, Giuliana, Ulgheri, Lucia, Ticca, Anna, Izzo, Francesco, Laiola, Anna, Trojsi, Francesca, Renton, Ae, Majounie, E, Abramzon, Y, Conforti, Fl, Giannini, F, Corbo, M, Sabatelli, M., Chiò, A., Borghero, G., Restagno, G., Mora, G., Drepper, C., Traynor, B., Sendtner, M., Brunetti, M., Ossola, I., Calvo, A., Pugliatti, M., Sotgiu, M., Murru, M., Marrosu, G., Marrosu, F., Marinou, K., Mandrioli, J., Sola, P., Caponnetto, C., Mancardi, G., Mandich, P., LA BELLA, V., Spataro, R., Conte, A., Monsurrò, M., Tedeschi, G., Pisano, F., Bartolomei, I., Salvi, F., Lauria, G., Simone, I., Logroscino, G., Gambardella, A., Quattrone, A., Lunetta, C., Volanti, P., Zollino, M., Penco, S., Battistini, S., the ITALSGEN, C., Renton, A., Majounie, E., Abramzon, Y., Conforti, F., Giannini, F., and Corbo, M.

Subjects
Male, Parents, Pathology, phenotype-genotype correlation, Cohort Studies, 0302 clinical medicine, C9orf72, amyotrophic lateral sclerosi, genetics, Amyotrophic lateral sclerosis, Age of Onset, amyotrophic lateral sclerosis, familial als, C9Orf72, 0303 health sciences, Sex Characteristics, DNA Repeat Expansion, Adult, Age of Onset, Aged, Amyotrophic Lateral Sclerosis, genetics/pathology, Cohort Studies, DNA Repeat Expansion, DNA, genetics, Female, Humans, Italy, Male, Middle Aged, Mutation, genetics, Parents, Pedigree, Phenotype, Proteins, genetics, Sex Characteristics, Survival Analysis, Middle Aged, 3. Good health, Pedigree, Settore MED/26 - NEUROLOGIA, Phenotype, Italy, Settore MED/26 - Neurologia, Female, Frontotemporal dementia, Adult, medicine.medical_specialty, SOD1, Biology, TARDBP, 03 medical and health sciences, Internal medicine, medicine, Humans, 030304 developmental biology, Aged, amyotrophic lateral sclerosis, familial ALS, C9ORF72 gene, phenotype–genotype correlation, C9orf72 Protein, Amyotrophic Lateral Sclerosis, genetics/pathology, Proteins, Original Articles, DNA, medicine.disease, Survival Analysis, Settore BIO/18 - Genetica, familial ALS, C9ORF72 gene, Mutation, Neurology (clinical), Age of onset, Trinucleotide repeat expansion, familial al, 030217 neurology & neurosurgery
Abstract

A large hexanucleotide (GGGGCC) repeat expansion in the first intron of C9ORF72, a gene located on chromosome 9p21, has been recently reported to be responsible for 40% of familial amyotrophic lateral sclerosis cases of European ancestry. The aim of the current article was to describe the phenotype of amyotrophic lateral sclerosis cases carrying the expansion by providing a detailed clinical description of affected cases from representative multi-generational kindreds, and by analysing the age of onset, gender ratio and survival in a large cohort of patients with familial amyotrophic lateral sclerosis. We collected DNA and analysed phenotype data for 141 index Italian familial amyotrophic lateral sclerosis cases (21 of Sardinian ancestry) and 41 German index familial amyotrophic lateral sclerosis cases. Pathogenic repeat expansions were detected in 45 (37.5%) patients from mainland Italy, 12 (57.1%) patients of Sardinian ancestry and nine (22.0%) of the 41 German index familial amyotrophic lateral sclerosis cases. The disease was maternally transmitted in 27 (49.1%) pedigrees and paternally transmitted in 28 (50.9%) pedigrees (P = non-significant). On average, children developed disease 7.0 years earlier than their parents [children: 55.8 years (standard deviation 7.9), parents: 62.8 (standard deviation 10.9); P = 0.003]. Parental phenotype influenced the type of clinical symptoms manifested by the child: of the 13 cases where the affected parent had an amyotrophic lateral sclerosis–frontotemporal dementia or frontotemporal dementia, the affected child also developed amyotrophic lateral sclerosis–frontotemporal dementia in nine cases. When compared with patients carrying mutations of other amyotrophic lateral sclerosis-related genes, those with C9ORF72 expansion had commonly a bulbar onset (42.2% compared with 25.0% among non-C9ORF72 expansion cases, P = 0.03) and cognitive impairment (46.7% compared with 9.1% among non-C9ORF72 expansion cases, P = 0.0001). Median survival from symptom onset among cases carrying C9ORF72 repeat expansion was 3.2 years lower than that of patients carrying TARDBP mutations (5.0 years; 95% confidence interval: 3.6–7.2) and longer than those with FUS mutations (1.9 years; 95% confidence interval: 1.7–2.1). We conclude that C9ORF72 hexanucleotide repeat expansions were the most frequent mutation in our large cohort of patients with familial amyotrophic lateral sclerosis of Italian, Sardinian and German ancestry. Together with mutation of SOD1, TARDBP and FUS, mutations of C9ORF72 account for 60% of familial amyotrophic lateral sclerosis in Italy. Patients with C9ORF72 hexanucleotide repeat expansions present some phenotypic differences compared with patients with mutations of other genes or with unknown mutations, namely a high incidence of bulbar-onset disease and comorbidity with frontotemporal dementia. Their pedigrees typically display a high frequency of cases with pure frontotemporal dementia, widening the concept of familial amyotrophic lateral sclerosis. Keywords

Published
2012

12. A Hexanucleotide Repeat Expansion in C9ORF72 Is the Cause of Chromosome 9p21-Linked ALS-FTD

Author

Renton, Ae, Majounie, E, Waite, A, Simón Sánchez, J, Rollinson, S, Gibbs, Jr, Schymick, Jc, Laaksovirta, H, van Swieten, Jc, Myllykangas, L, Kalimo, H, Paetau, A, Abramzon, Y, Remes, Am, Kaganovich, A, Scholz, Sw, Duckworth, J, Ding, J, Harmer, Dw, Hernandez, Dg, Johnson, Jo, Mok, K, Ryten, M, Trabzuni, D, Guerreiro, Rj, Orrell, Rw, Neal, J, Murray, A, Pearson, J, Jansen, Ie, Sondervan, D, Seelaar, H, Blake, D, Young, K, Halliwell, N, Callister, Jb, Toulson, G, Richardson, A, Gerhard, A, Snowden, J, Mann, D, Neary, D, Nalls, Ma, Peuralinna, T, Jansson, L, Isoviita, Vm, Kaivorinne, Al, Hölttä Vuori, M, Ikonen, E, Sulkava, R, Benatar, M, Wuu, J, Chiò, A, Restagno, G, Borghero, G, Sabatelli, M, Italsgen, Consortium, Heckerman, D, Rogaeva, E, Zinman, L, Rothstein, Jd, Sendtner, M, Drepper, C, Eichler, Ee, Alkan, C, Abdullaev, Z, Pack, Sd, Dutra, A, Pak, E, Hardy, J, Singleton, A, Williams, Nm, Heutink, P, Pickering Brown, S, Morris, Hr, Tienari, Pj, Traynor, Bj, Calvo, A, Cammarosano, S, Moglia, C, Canosa, A, Gallo, S, Brunetti, M, Ossola, I, Mora, G, Marinou, K, Papetti, L, Conte, A, Luigetti, M, La Bella, V, Spataro, R, Colletti, T, Battistini, S, Giannini, Fabio, Ricci, C, Caponnetto, C, Mancardi, G, Mandich, P, Salvi, F, Bartolomei, I, Mandrioli, J, Sola, P, Corbo, M, Lunetta, C, Penco, S, Monsurrò, Mr, Tedeschi, G, Conforti, Fl, Volanti, P, Floris, G, Cannas, A, Piras, V, Murru, Mr, Marrosu, Mg, Pugliatti, M, Ticca, A, Simone, I, Logroscino, G, Neuroscience Campus Amsterdam - Systems Biology of the Synapse, Neuroscience Campus Amsterdam - Neurodegeneration, Renton, Ae, Majounie, E, Waite, A, Simón Sánchez, J, Rollinson, S, Gibbs, Jr, Schymick, Jc, Laaksovirta, H, van Swieten, Jc, Myllykangas, L, Kalimo, H, Paetau, A, Abramzon, Y, Remes, Am, Kaganovich, A, Scholz, Sw, Duckworth, J, Ding, J, Harmer, Dw, Hernandez, Dg, Johnson, Jo, Mok, K, Ryten, M, Trabzuni, D, Guerreiro, Rj, Orrell, Rw, Neal, J, Murray, A, Pearson, J, Jansen, Ie, Sondervan, D, Seelaar, H, Blake, D, Young, K, Halliwell, N, Callister, Jb, Toulson, G, Richardson, A, Gerhard, A, Snowden, J, Mann, D, Neary, D, Nalls, Ma, Peuralinna, T, Jansson, L, Isoviita, Vm, Kaivorinne, Al, Hölttä Vuori, M, Ikonen, E, Sulkava, R, Benatar, M, Wuu, J, Chiò, A, Restagno, G, Borghero, G, Sabatelli, M, Italsgen, Consortium, Heckerman, D, Rogaeva, E, Zinman, L, Rothstein, Jd, Sendtner, M, Drepper, C, Eichler, Ee, Alkan, C, Abdullaev, Z, Pack, Sd, Dutra, A, Pak, E, Hardy, J, Singleton, A, Williams, Nm, Heutink, P, Pickering Brown, S, Morris, Hr, Tienari, Pj, COLLABORATORS: Calvo A, Traynor B. J., Cammarosano, S, Moglia, C, Canosa, A, Gallo, S, Brunetti, M, Ossola, I, Mora, G, Marinou, K, Papetti, L, Conte, A, Luigetti, M, La Bella, V, Spataro, R, Colletti, T, Battistini, S, Giannini, F, Ricci, C, Caponnetto, C, Mancardi, G, Mandich, P, Salvi, F, Bartolomei, I, Mandrioli, J, Sola, P, Corbo, M, Lunetta, C, Penco, S, Monsurro', Maria Rosaria, Tedeschi, Gioacchino, Conforti, Fl, Volanti, P, Floris, G, Cannas, A, Piras, V, Murru, Mr, Marrosu, Mg, Pugliatti, M, Ticca, A, Simone, I, Logroscino, G., Neurology, Human genetics, NCA - Systems Biology of the Synapse, and NCA - Neurodegeneration

Subjects
Male, Genotype, Neuroscience(all), Population, Biology, TARDBP, Chromosomes, 03 medical and health sciences, 0302 clinical medicine, Alleles, Amyotrophic Lateral Sclerosis, genetics, Chromosomes, Human, Pair 9, Female, Finland, Frontotemporal Dementia, genetics, Genetic Predisposition to Disease, Genotype, Haplotypes, Humans, Male, Microsatellite Repeats, Pedigree, Polymorphism, Single Nucleotide, SDG 3 - Good Health and Well-being, C9orf72, Humans, genetics, Genetic Predisposition to Disease, Polymorphism, education, Alleles, Finland, 030304 developmental biology, Genetics, 0303 health sciences, education.field_of_study, General Neuroscience, Haplotype, Amyotrophic Lateral Sclerosis, Charged multivesicular body protein 2B, DNA Repeat Expansion, 3. Good health, Pedigree, C9orf72 Protein, Haplotypes, Frontotemporal Dementia, Female, Trinucleotide repeat expansion, 030217 neurology & neurosurgery, Pair 9, Microsatellite Repeats
Abstract

The chromosome 9p21 amyotrophic lateral sclerosis-frontotemporal dementia (ALS-FTD) locus contains one of the last major unidentified autosomal-dominant genes underlying these common neurodegenerative diseases. We have previously shown that a founder haplotype, covering the MOBKL2b, IFNK, and C9ORF72 genes, is present in the majority of cases linked to this region. Here we show that there is a large hexanucleotide (GGGGCC) repeat expansion in the first intron of C9ORF72 on the affected haplotype. This repeat expansion segregates perfectly with disease in the Finnish population, underlying 46.0% of familial ALS and 21.1% of sporadic ALS in that population. Taken together with the D90A SOD1 mutation, 87% of familial ALS in Finland is now explained by a simple monogenic cause. The repeat expansion is also present in one-third of familial ALS cases of outbred European descent, making it the most common genetic cause of these fatal neurodegenerative diseases identified to date. © 2011 Elsevier Inc.

Published
2011

13. ALS/FTD phenotype in two Sardinian families carrying both C9ORF72 and TARDBP mutations

Author

Chiò, A, Restagno, G, Brunetti, M, Ossola, I, Calvo, A, Canosa, A, Moglia, C, Floris, G, Tacconi, P, Marrosu, F, Marrosu, Mg, Murru, Mr, Majounie, E, Renton, Ae, Abramzon, Y, Pugliatti, Maura, Sotgiu, Ma, Traynor, Bj, Borghero, G, and Sardinials, Consortium

Subjects
Adult, Male, Mutation, Missense, Locus (genetics), Biology, TARDBP, Article, 03 medical and health sciences, 0302 clinical medicine, C9orf72, medicine, Missense mutation, Humans, genetics, Family, Amyotrophic lateral sclerosis, 030304 developmental biology, Genetics, 0303 health sciences, DNA Repeat Expansion, amyotrophic lateral sclerosis, frontotemporal dementia, C9orf72 Protein, Haplotype, Amyotrophic Lateral Sclerosis, C9orf72 Gene, Proteins, Middle Aged, medicine.disease, 3. Good health, Pedigree, DNA-Binding Proteins, Psychiatry and Mental health, Phenotype, Haplotypes, Italy, Frontotemporal Dementia, Surgery, Female, Neurology (clinical), Trinucleotide repeat expansion, 030217 neurology & neurosurgery
Abstract

Background In the isolated population of Sardinia, a Mediterranean island, ∼25% of ALS cases carry either a p.A382T mutation of the TARDBP gene or a GGGGCC hexanucleotide repeat expansion in the first intron of the C9ORF72 gene. Objective To describe the co-presence of two genetic mutations in two Sardinian ALS patients. Methods We identified two index ALS cases carrying both the p.A382T missense mutation of TARDBP gene and the hexanucleotide repeat expansion of C9ORF72 gene. Results The index case of Family A had bulbar ALS and frontemporal dementia (FTD) at 43. His father, who carried the hexanucleotide repeat expansion of C9ORF72 gene, had spinal ALS and FTD at 64 and his mother, who carried the TARDBP gene p.A382T missense mutation, had spinal ALS and FTD at 69. The index case of Family B developed spinal ALS without FTD at 35 and had a rapid course to respiratory failure. His parents are healthy at 62 and 63. The two patients share the known founder risk haplotypes across both the C9ORF72 9p21 locus and the TARDBP 1p36.22 locus. Conclusions Our data show that in rare neurodegenerative causing genes can co-exist within the same individuals and are associated with a more severe disease course.

Published
2012

14. C9ORF72 hexanucleotide repeat expansions in the Italian sporadic ALS population

Author

Mario, Sabatellia, Francesca Luisa Conforti, Marcella, Zollinoc, Gabriele, Morad, Maria Rosaria Monsurrò, Paolo, Volanti, Kalliopi, Marinoud, Fabrizio, Salvig, Massimo, Corbo, Fabio, Giannini, Stefania, Battistini, Silvana, Penco, Christian, Lunetta, Aldo, Quattrone, Antonio, Gambardella, Giancarlo, Logroscino, Isabella, Simone, Ilaria, Bartolomei, Fabrizio, Pisano, Gioacchino, Tedeschi, Amelia, Conte, Rossella, Spataro, Vincenzo La Bella, Claudia, Caponnetto, Gianluigi, Mancardi, Paola, Mandich, Patrizia, Sola, Jessica, Mandrioli, Renton, Alan E., Elisa, Majounie, Yevgeniya, Abramzon, Francesco, Marrosu, Maria Giovanna Marrosu, Maria Rita Murru, Maria Alessandra Sotgiu, Maura, Pugliatti, Rodolico, Carmelo, the ITALSGEN Consortium: Stefania Cammarosano, Giuseppe, Fuda, Antonio, Canosa, Sara, Gallo, Laura, Papetti, Giuseppe Lauria Pinter, Marco, Luigetti, Serena, Lattante, Giuseppe, Marangi, Tiziana, Colletti, Claudia, Ricci, Paola, Origone, Gianluca, Floris, Antonino, Cannas, Valeria, Piras, Emanuela, Costantino, Carla, Pani, Parish, Leslie D., Paola, Cossu, Giuliana, Solinas, Lucia, Ulgheri, Anna, Ticca, Francesco, Izzo, Anna, Laiola, Francesca, Trojsi, Portaro, Simona, William, Sproviero, Cristina, Moglia, Andrea, Calvo, Irene, Ossola, Maura, Brunetti, Traynor, Bryan J., Giuseppe, Borghero, Gabriella, Restagno, Adriano, Chiò, Sabatelli, M, Conforti, Fl, Zollino, M, Mora, G, Monsurro', Maria Rosaria, Volanti, P, Marinou, K, Salvi, F, Corbo, M, Giannini, F, Battistini, S, Penco, S, Lunetta, C, Quattrone, A, Gambardella, A, Logroscino, G, Simone, I, Bartolomei, I, Pisano, F, Tedeschi, Gioacchino, Conte, A, Spataro, R, La Bella, V, Caponnetto, C, Mancardi, G, Mandich, P, Sola, P, Mandrioli, J, Renton, Ae, Majounie, E, Abramzon, Y, Marrosu, F, Marrosu, Mg, Murru, Mr, Sotgiu, Ma, Pugliatti, M, Rodolico, C, ITALSGEN Consortium: Cammarosano, Stefania, Fuda, Giuseppe, Canosa, Antonio, Gallo, Sara, Papetti, Laura, Lauria Pinter, Giuseppe, Luigetti, Marco, Lattante, Serena, Marangi, Giuseppe, Colletti, Tiziana, Ricci, Claudia, Origone, Paola, Floris, Gianluca, Cannas, Antonino, Piras, Valeria, Costantino, Emanuela, Pani, Carla, Parish, Leslie D, Cossu, Paola, Solinas, Giuliana, Lucia, U. l. g. h. e. r. i., Ticca, Anna, Izzo, Francesco, Laiola, Anna, Trojsi, Francesca, Portaro, Simona, Sproviero, William, Moglia, C, Calvo, A, Ossola, I, Brunetti, M, Traynor, Bj, Borghero, G, Restagno, G, Chiò, A., Sabatelli, M., Conforti, F., Zollino, M., Mora, G., Monsurrò, M., Volanti, P., Marinou, K., Salvi, F., Corbo, M., Giannini, F., Battistini, S., Penco, S., Lunetta, C., Quattrone, A., Gambardella, A., Logroscino, G., Simone, I., Bartolomei, I., Pisano, F., Tedeschi, G., Conte, A., Spataro, R., LA BELLA, V., Caponnetto, C., Mancardi, G., Mandich, P., Sola, P., Mandrioli, J., Renton, A., Majounie, E., Abramzon, Y., Marrosu, F., Marrosu, M., Murru, M., Sotgiu, M., Pugliatti, M., Rodolico, C., Italsgen, C., Moglia, C., Calvo, A., Ossola, I., Brunetti, M., Traynor, B., Borghero, G., and Restagno, G.

Subjects
Male, Aging, Survival, Pedigree chart, Settore MED/03 - GENETICA MEDICA, Repetitive Sequences, 0302 clinical medicine, C9orf72, Polymorphism (computer science), Risk Factors, Prevalence, Amyotrophic lateral sclerosis, Genetics, 0303 health sciences, education.field_of_study, General Neuroscience, Single Nucleotide, Middle Aged, 3. Good health, Settore MED/26 - NEUROLOGIA, Italy, Female, Settore MED/26 - Neurologia, Frontotemporal dementia, Genetic Markers, Population, C9ORF72, Biology, Polymorphism, Single Nucleotide, Article, 03 medical and health sciences, medicine, Humans, Genetic Predisposition to Disease, Polymorphism, education, amyotrophic lateral sclerosis, C9orf672, frontotemporal dementia, survival, Amyotrophic lateral sclerosi, 030304 developmental biology, Repetitive Sequences, Nucleic Acid, sporadic, C9orf72 Protein, Nucleic Acid, Amyotrophic lateral sclerosis, C9ORF72, Frontotemporal dementia, Survival, Genetic Variation, Proteins, medicine.disease, Settore BIO/18 - Genetica, Neurology (clinical), Geriatrics and Gerontology, ALS, Trinucleotide repeat expansion, 030217 neurology & neurosurgery, Developmental Biology
Abstract

It has been recently reported that a large proportion of patients with familial amyotrophic lateral sclerosis (familial ALS) and frontotemporal dementia (FTD) are associated with a hexanucleotide (GGGGCC) repeat expansion in the first intron of C9ORF72. We have assessed 1,757 Italian sporadic ALS cases, 133 from Sardinia, 101 from Sicily, and 1,523 from mainland Italy. Sixty (3.7%) of 1,624 mainland Italians and Sicilians and 9 (6.8%) of the 133 Sardinian sporadic ALS cases carried the pathogenic repeat expansion. None of the 619 regionally-matched control samples (1,238 chromosomes) carried the expansion. Twenty-five cases (36.2%) had behavioral FTD in addition to ALS. FTD or unspecified dementia was also detected in 19 pedigrees (27.5%) in first-degree relatives of ALS patients. Cases carrying the C9ORF72 hexanucleotide expansion survived one year less than cases who did not carry this mutation. In conclusion, we found that C9ORF72 hexanucloetide repeat expansions represents a sizeable proportion of apparent sporadic ALS in the Italian and Sardinian population, representing by far the commonest mutation in Italy and the second more common in Sardinia.

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