Evidence map›Paper›PMID 41916976›Full record

ArticleNature communications2026

Characterizing spatiotemporal white matter hyperintensity pathophysiology in vivo to disentangle vascular and neurodegenerative contributions.

Olivier Parent, Zaki Alasmar, Sophia Osborne, Aurélie Bussy, Manuela Costantino, Jérémie P Fouquet, Daniela Quesada, Alexandre Pastor-Bernier, Alfonso Fajardo-Valdez, Alexa Pichet-Binette and 9 more

Abstract read
In one paragraph

Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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.

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

6 citing papers in PubMed.

  1. Observational
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

19 authors.

Olivier ParentCerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Canada. olivier.parent@mail.mcgill.ca.ORCID http://orcid.org/0000-0002-3177-0353
Zaki AlasmarCerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Canada.
Sophia OsborneCerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Canada.
Aurélie BussyCerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Canada.ORCID http://orcid.org/0000-0001-6695-9941
Manuela CostantinoCerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Canada.ORCID http://orcid.org/0000-0003-1886-3173
Jérémie P FouquetCerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Canada.ORCID http://orcid.org/0000-0001-6815-7037
Daniela QuesadaIntegrated Program in Neuroscience, McGill University, Montreal, Canada.ORCID http://orcid.org/0009-0002-5769-6742
Alexandre Pastor-BernierCenter for the Studies in the Prevention of Alzheimer's Disease, Douglas Mental Health University Institute, Montreal, Canada.
Alfonso Fajardo-ValdezCenter for the Studies in the Prevention of Alzheimer's Disease, Douglas Mental Health University Institute, Montreal, Canada.
Alexa Pichet-BinetteDépartement de pharmacologie et physiologie, Université de Montréal, Montreal, Canada.
Ann McQuarrieDepartment of Anatomy and Cell Biology, McGill University, Montreal, Canada.
Josefina MaranzanoDépartement d'Anatomie, Université du Québec à Trois-Rivières, Trois-Rivières, Canada.
Gabriel A DevenyiCerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Canada.ORCID http://orcid.org/0000-0002-7766-1187
Christopher J SteeleDepartment of Psychology, Concordia University, Montreal, Canada.ORCID http://orcid.org/0000-0003-1656-7928
Sylvia VilleneuveCenter for the Studies in the Prevention of Alzheimer's Disease, Douglas Mental Health University Institute, Montreal, Canada.ORCID http://orcid.org/0000-0003-2338-0467
PREVENT-AD Research Group
Alzheimer’s Disease Neuroimaging Initiative (ADNI)
Mahsa Dadar *Cerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Canada. mahsa.dadar@mcgill.ca.
M Mallar Chakravarty *Cerebral Imaging Centre, Douglas Mental Health University Institute, Montreal, Canada. mallar.chakravarty@mcgill.ca.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

White matter hyperintensities (WMHs) are neuroimaging markers widely interpreted as caused by cerebral small vessel disease, yet emerging evidence suggests that a subset may have a neurodegenerative etiology. Current imaging methods have lacked the specificity to disentangle biological processes underlying WMHs in vivo. Here, we used voxel-level normative modeling and seven microstructural MRI markers with complementary biophysical sensitivities to generate single-subject high-resolution WMH pathophysiology maps in a large cohort (n = 32,526). We calculated data-driven spatial patterns of similar WMHs, revealing distinct periventricular, posterior, and anterior clusters. We identified a reproducible WMH signature linked to dementia and Alzheimer's disease, characterized by a posterior predominance and a pathophysiological pattern indicative of selective fiber degeneration. Posterior WMHs connected cortical regions vulnerable to tau pathology. Our framework helps parsing vascular and neurodegenerative contributions of WMHs in vivo, which could alter the course of treatment strategies and provide nuanced interpretations of research findings.

Indexed as

Alzheimer DiseaseWhite MatterAgedAged, 80 and overBrainDementiaFemaleHumansMagnetic Resonance ImagingMaleNeurodegenerative Diseases

Identifiers

PMID41916976
PMCPMC13199390

What OpenQuestion holds

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Registered trials

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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.