Evidence map›Paper›PMID 32769115›Full record

ArticleJournal of neurology, neurosurgery, and psychiatry2020

Early symptoms in symptomatic and preclinical genetic frontotemporal lobar degeneration.

Tamara Paulo Tavares, Derek G V Mitchell, Kristy Kl Coleman, Brenda L Coleman, Christen L Shoesmith, Christopher R Butler, Isabel Santana, Adrian Danek, Alexander Gerhard, Alexandre de Mendonca and 22 more

Open access · bronzeAbstract readMulticenter Study
In one paragraph

Article in Journal of neurology, neurosurgery, and psychiatry, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Integrating a motor domain enhances disease severity scales in an FTD-ALS spectrum cohort.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  5. Article
  6. Observational
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Recognition memory and divergent cognitive profiles in prodromal genetic frontotemporal dementia.Cortex; a journal devoted to the study of the nervous system and behavior · 2021
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

32 authors at 20 institutions in 9 countries.

Tamara Paulo TavaresNeuroscience, Brain and Mind Institute, University of Western Ontario, London, Ontario, Canada.ORCID 0000-0002-3043-9773
Derek G V MitchellPsychiatry, Anatomy & Cell Biology, Brain and Mind Institute, University of Western Ontario, London, Ontario, Canada.
Kristy Kl ColemanCognitive Neurology, St. Joseph's Health Care, London, Ontario, Canada.
Brenda L ColemanInfectious Disease Epidemiologic Research Unit, Mount Sinai Hospital, Toronto, Ontario, Canada.
Christen L ShoesmithClinical Neurological Sciences, University of Western Ontario, London, Ontario, Canada.
Christopher R ButlerNuffield Department of Clinical Neurosciences, Medical Sciences Division, University of Oxford, Oxford, UK.
Isabel SantanaNeurology, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.
Adrian DanekNeurologische Klinik und Poliklinik, Ludwig-Maximilians Universitat, Munich, Germany.
Alexander GerhardDivision of Neuroscience and Experimental Psychology, Wolfson Molecular Imaging Centre, University of Manchester, Manchester, United Kingdom.
Alexandre de MendoncaLaboratory of Neurosciences, Institute of Molecular Medicine, Faculty of Medicine, University of Lisbon, Lisbon, Portugal.
Barbara BorroniCentre for Neurodegenerative Disorders, Neurology Unit, Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy.ORCID 0000-0001-9340-9814
Maria Carmela TartagliaTanz Centre for Research in Neurodegenerative Disease, University of Toronto, Toronto, Ontario, Canada.
Caroline GraffGeriatric Medicine, Karolinska University Hospital-Huddinge, Stockholm, Sweden.
Daniela GalimbertiNeurodegenerative Diseases Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
Fabrizio TagliaviniNeurology and Neuropathology, Fondazione Istituto Neurologico Carlo Besta, Milan, Italy.
Fermin MorenoCognitive Disorders Unit, Department of Neurology, Donostia University Hospital Gipuzkoa Building, San Sebastian, País Vasco, Spain.
Giovanni FrisoniInstituto di Recovero e Cura a Carattere Scientifico Istituto Centro San Giovanni di Dio Fatebenefratell, Brescia, Italy.
James Benedict RoweDepartment of Clinical Neurosciences, University of Cambridge, Cambridge, UK.ORCID 0000-0001-7216-8679
Johannes LevinGerman Center for Neurodegenerative Diseases (DZNE), Munich, Germany.
John Cornelis Van SwietenNeurology, Erasmus MC, Rotterdam, The Netherlands.ORCID 0000-0001-6278-6844
Markus OttoNeurology, University of Ulm, Ulm, Germany.ORCID 0000-0002-6647-5944
Matthis SynofzikDepartment of Neurodegenerative Diseases and Center of Neurology, Hertie Institute for Clinical Brain Research, Tübingen, Germany.
Raquel Sanchez-ValleAlzheimer's Disease and Other Cognitive Disorders Unit, Neurology Service, Hospital Clínic, Institut d'Investigacións Biomèdiques August Pi I Sunyer, Barcelona, Spain.
Rik VandenbergheLaboratory for Cognitive Neurology, Department of Neurosciences, KU Leuven, Leuven, Flanders, Belgium.
Robert Jr LaforceClinique Interdisciplinaire de Mémoire, Département des Sciences Neurologiques du CHU de Québec, Université Laval, Québec City, Quebec, Canada.
Roberta GhidoniMolecular Markers Lab, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy.
Sandro SorbiDepartment of Neuroscience, Psychology, Drug Research, and Child Health, University of Florence, Florence, Italy.
Simon DucharmeMcConnell Brain Imaging Centre, Montreal Neurological Institute and Hospital, Montreal, Quebec, Canada.
Mario MasellisNeurology, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
Jonathan RohrerDementia Research Centre, Department of Neurodegenerative Disease, UCL Institute of Neurology, London, UK.
Elizabeth FingerClinical Neurological Sciences, University of Western Ontario, London, Ontario, Canada elizabeth.finger@lhsc.on.ca.ORCID 0000-0003-4461-7427
GENFI Initiative
Western University · CACentro San Giovanni di Dio Fatebenefratelli · ITGerman Center for Neurodegenerative Diseases · DEBiogipuzkoa Health Research Institute · ESConsorci Institut D'Investigacions Biomediques August Pi I Sunyer · ESErasmus MC · NLFondazione IRCCS Istituto Neurologico Carlo Besta · ITHospitais da Universidade de Coimbra · PTKarolinska University Hospital · SEKU Leuven · BELudwig-Maximilians-Universität München · DEMontreal Neurological Institute and Hospital · CAMount Sinai Hospital · CASt Joseph's Health Care · CASunnybrook Health Science Centre · CAUK Dementia Research Institute · GBUniversität Ulm · DEUniversité Laval · CAUniversity of Brescia · ITUniversity of Cambridge · GB

Funding

CIHR MOP 327387Medical Research Council MC_U105597119Medical Research Council MC_UU_00005/12Medical Research Council MR/K010395/1Medical Research Council MR/M008525/1Medical Research Council MR/ M023664/1Medical Research Council MR/M023664/1Medical Research Council MR/T046015/1Wellcome Trust 103838Wellcome Trust 103848
6 · The paper itself

Abstract

objectivesThe clinical heterogeneity of frontotemporal dementia (FTD) complicates identification of biomarkers for clinical trials that may be sensitive during the prediagnostic stage. It is not known whether cognitive or behavioural changes during the preclinical period are predictive of genetic status or conversion to clinical FTD. The first objective was to evaluate the most frequent initial symptoms in patients with genetic FTD. The second objective was to evaluate whether preclinical mutation carriers demonstrate unique FTD-related symptoms relative to familial mutation non-carriers.

methodsThe current study used data from the Genetic Frontotemporal Dementia Initiative multicentre cohort study collected between 2012 and 2018. Participants included symptomatic carriers (n=185) of a pathogenic mutation in chromosome 9 open reading frame 72 (

resultsThe most frequently endorsed initial symptoms among symptomatic patients were apathy (23%), disinhibition (18%), memory impairments (12%), decreased fluency (8%) and impaired articulation (5%). Predominant first symptoms were usually discordant between family members. Relative to biologically related non-carriers, preclinical

conclusionPreclinical mutation carriers exhibited neuropsychiatric symptoms compared with non-carriers that may be considered as future clinical trial outcomes. Given the heterogeneity in symptoms, the detection of clinical transition to symptomatic FTD may be best captured by composite indices integrating the most common initial symptoms for each genetic group.

Indexed as

Prodromal SymptomsAdultC9orf72 ProteinFemaleFrontotemporal DementiaHeterozygoteHumansMaleMiddle AgedMutationProgranulinstau ProteinsC9orf72 ProteinC9orf72 protein, humanGRN protein, humanMAPT protein, humanProgranulinstau Proteins

Identifiers

PMID32769115
PMCPMC7611534
OpenAlexW3047873932

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.