Evidence map›Paper›PMID 32881346›Full record

ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2020

Effects of bilingualism on age at onset in two clinical Alzheimer's disease variants.

Jessica de Leon, Stephanie M Grasso, Ariane Welch, Zachary Miller, Wendy Shwe, Gil D Rabinovici, Bruce L Miller, Maya L Henry, Maria Luisa Gorno-Tempini

Registry-linked trialAbstract read
In one paragraph

Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05741853 (Cognitive Reserve and Linguistic Resilience in Bilingual Hispanics With Primary Progressive Aphasia), which is not on this map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
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.

NCT05741853 narecruitingnot on this mapstarted 2023, after this paper: background citation

Cognitive Reserve and Linguistic Resilience in Bilingual Hispanics With Primary Progressive Aphasia

TypeinterventionalSponsorStephanie GrassoRan2023 to 2027Enrolled60ConditionsPrimary Progressive Aphasia, Dementia, Dementia, Frontotemporal, Alzheimer DiseaseArmsVideo-Implemented Script Training for Aphasia (VISTA), Lexical Retrieval Training (LRT)
3 · Its place in the literature

Who cites it

18 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Cognitive and brain reserve in bilingual speakers with clinical AD variants.medRxiv : the preprint server for health sciences · 2026
    Article
  6. Article
  7. The role of bilingualism on functional decline and neurodegeneration in distinct ADRD clinical syndromes.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
  8. Article
  9. Language disorders in understudied languages: Opening editorial.Cortex; a journal devoted to the study of the nervous system and behavior · 2025
    Article
  10. Review
  11. Article
  12. Observational
  13. Article
  14. Review
  15. Primary Progressive Aphasia: Toward a Pathophysiological Synthesis.Current neurology and neuroscience reports · 2021
    Review
  16. Article
  17. Article
  18. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Jessica de LeonDepartment of Neurology, Memory and Aging Center, University of California, San Francisco, California, USA.
Stephanie M GrassoDepartment of Communication Sciences and Disorders, University of Texas At Austin, Texas, USA.
Ariane WelchDepartment of Neurology, Memory and Aging Center, University of California, San Francisco, California, USA.
Zachary MillerDepartment of Neurology, Memory and Aging Center, University of California, San Francisco, California, USA.
Wendy ShweDepartment of Neurology, Memory and Aging Center, University of California, San Francisco, California, USA.
Gil D RabinoviciDepartment of Neurology, Memory and Aging Center, University of California, San Francisco, California, USA.
Bruce L MillerDepartment of Neurology, Memory and Aging Center, University of California, San Francisco, California, USA.
Maya L HenryDepartment of Communication Sciences and Disorders, University of Texas At Austin, Texas, USA.
Maria Luisa Gorno-TempiniDepartment of Neurology, Memory and Aging Center, University of California, San Francisco, California, USA.

Funding

TDP-43 Loss-of-Function: Biology to BiomarkersP01AG019724 · NIA · UNIVERSITY OF PENNSYLVANIA · PI Jennifer Merrilees · 2002 to 2026
$67.2M
Research Education ComponentP30AG062422 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI Gil Dan Rabinovici · 2019 to 2026
$36.9M
PrPSc SPECIFIC INTERACTION WITH NOVEL PrP-Fc FUSION PROTEINSP50AG023501 · NIA · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI HUANG, YADONG · 2004 to 2018
$27.1M
Progressive Aphasia Cognition Anatomy and ProgressionR01NS050915 · NINDS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MARIA LUISA GORNO TEMPINI · 2004 to 2026
$11.0M
Establishing Evidence-based Treatment for Speech and Language in Primary Progressive AphasiaR01DC016291 · NIDCD · UNIVERSITY OF TEXAS AT AUSTIN · PI HENRY, MAYA · 2017 to 2021
$3.3M
Training program in the neurology of language and neurodegenerative aphasiasK24DC015544 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GORNO TEMPINI, MARIA LUISA · 2016 to 2025
$1.9M
Primary Progressive Aphasia: Beyond the Clinical VariantsK23DC018021 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI DELEON, JESSICA ANNE · 2020 to 2024
$995k
Patterns of decline and recovery in bilingual speakers with primary progressive aphasiaF31DC016229 · NIDCD · UNIVERSITY OF TEXAS AT AUSTIN · PI GRASSO, STEPHANIE M · 2017 to 2019
$112k
NIA NIH HHS P01 AG019724NIA NIH HHS P30 AG062422NIA NIH HHS P50 AG023501NIDCD NIH HHS F31 DC016229NIDCD NIH HHS K23 DC018021NIDCD NIH HHS K24 DC015544NIDCD NIH HHS R01 DC016291NIH HHS NIA P01 AG019724NIH HHS NIA P50 AG023501NIH HHS NIDCD F31DC016229NIH HHS NIDCD K23 DC018021NIH HHS NIDCD K24 DC015544NIH HHS NIDCD R01 DC016291NINDS NIH HHS R01 NS050915
6 · The paper itself

Abstract

introductionThe effect of bilingualism on age at onset has yet to be examined within different clinical variants of Alzheimer's disease.

methodsWe reviewed the research charts of 287 well-characterized participants with either amnestic Alzheimer's dementia or logopenic variant primary progressive aphasia (lvPPA) and identified bilingual speakers based on regular use of two or more languages and/or ability to communicate with native speakers in two or more languages. We evaluated whether bilingual speakers demonstrated a delay in age of symptom onset relative to monolingual speakers while controlling for other variables known to influence cognitive reserve.

resultsA 5-year delay in age at symptom onset was observed for bilingual relative to monolingual speakers with lvPPA. This delay in onset was not observed in the amnestic Alzheimer's dementia cohort. DISCUSSION: Bilingualism may serve as a unique cognitive reserve variable in lvPPA, but not in amnestic Alzheimer's dementia.

Indexed as

Age of OnsetCognitive ReserveMultilingualismAlzheimer DiseaseAphasia, Primary ProgressiveCaliforniaFemaleHumansMaleMiddle AgedNeuropsychological TestsRetrospective StudiesAlzheimer's diseasebilingualismcognitive reservedementiamultilingualismprimary progressive aphasia

Identifiers

PMID32881346
PMCPMC7902304

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Registered trials

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.