Evidence map›Paper›PMID 29338604›Full record

SynthesisInternational journal of stroke : official journal of the International Stroke Society2018

Clinical significance of cerebral microbleeds on MRI: A comprehensive meta-analysis of risk of intracerebral hemorrhage, ischemic stroke, mortality, and dementia in cohort studies (v1).

Andreas Charidimou, Sara Shams, Jose R Romero, Jie Ding, Roland Veltkamp, Solveig Horstmann, Gudny Eiriksdottir, Mark A van Buchem, Vilmundur Gudnason, Jayandra J Himali and 10 more

Registry-linked trialOpen access · greenAbstract readMeta-Analysis
In one paragraph

Synthesis in International journal of stroke : official journal of the International Stroke Society, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04504864 (Low-dose Aspirin Therapy in Patients With Non-Cardioembolic Ischemic Stroke and Microbleeds), which is not on this map. Cited by 62 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 4 pooled it
8.3field-weighted citation impact, top 2% 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.

NCT04504864 phase4unknown statusnot on this mapstarted 2020, after this paper: background citation

Low-dose Aspirin Therapy in Patients With Non-Cardioembolic Ischemic Stroke and Microbleeds

TypeinterventionalSponsorXijing HospitalRan2020 to 2022Enrolled400ConditionsIschemic StrokeArmslow-dose aspirin, conventional-does aspirin
3 · Its place in the literature

Who cites it

62 citing papers in PubMed, 4 syntheses or guidelines pooled it, 117 citations in OpenAlex.

  1. Pooled it
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  3. Enlarged Perivascular Spaces and Dementia: A Systematic Review.Journal of Alzheimer's disease : JAD · 2019
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  8. Cognitive Impairment Predicts Adverse Outcomes in CKD.Kidney international reports · 2026
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2 more citing papers are in PubMed but not listed here.

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

20 authors at 12 institutions in 8 countries.

Andreas Charidimou1 Department of Neurology, Harvard Medical School, J. Philip Kistler Stroke Research Center, Massachusetts General Hospital, Boston, MA, USA.ORCID 0000-0001-5891-337X
Sara Shams3 Department of Clinical Science, Intervention, and Technology, Division of Medical Imaging and Technology, Karolinska Institutet, Stockholm, Sweden; Department of Radiology, Karolinska University Hospital, Stockholm, Sweden.
Jose R Romero4 Department of Neurology, Boston University School of Medicine, and the NHLBI's Framingham Heart Study, Framingham, Massachusetts.
Jie Ding5 Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA.
Roland Veltkamp6 Department of Neurology, University of Heidelberg, Heidelberg, Germany.
Solveig Horstmann6 Department of Neurology, University of Heidelberg, Heidelberg, Germany.
Gudny Eiriksdottir8 The Icelandic Heart Association, Kopavogur, Iceland.
Mark A van Buchem9 Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands.
Vilmundur Gudnason8 The Icelandic Heart Association, Kopavogur, Iceland.
Jayandra J Himali4 Department of Neurology, Boston University School of Medicine, and the NHLBI's Framingham Heart Study, Framingham, Massachusetts.
M Edip Gurol1 Department of Neurology, Harvard Medical School, J. Philip Kistler Stroke Research Center, Massachusetts General Hospital, Boston, MA, USA.
Anand Viswanathan1 Department of Neurology, Harvard Medical School, J. Philip Kistler Stroke Research Center, Massachusetts General Hospital, Boston, MA, USA.
Toshio Imaizumi11 Department of Neurosurgery, Kushiro City General Hospital, Kushiro, Japan.
Meike W Vernooij12 Department of Epidemiology and Department of Radiology and Nuclear Medicine; Erasmus MC University Medical Center, Rotterdam, the Netherlands.
Sudha Seshadri4 Department of Neurology, Boston University School of Medicine, and the NHLBI's Framingham Heart Study, Framingham, Massachusetts.
Steven M Greenberg1 Department of Neurology, Harvard Medical School, J. Philip Kistler Stroke Research Center, Massachusetts General Hospital, Boston, MA, USA.
Oscar R Benavente13 Division of Neurology, Department of Medicine, Stroke and Cerebrovascular Health Program, University of British Columbia, UBC Hospital, Vancouver, British Columbia, Canada.
Lenore J Launer5 Laboratory of Epidemiology and Population Sciences, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA.
Ashkan Shoamanesh14 Department of Medicine (Neurology), McMaster University and Population Health Research Institute, Hamilton, Ontario, Canada.
International META-MICROBLEEDS Initiative
Harvard University · USFramingham Heart Study · USHeidelberg University · DEIcelandic Heart Association · ISNational Institutes of Health · USBoston University · USErasmus MC · NLKarolinska University Hospital · SEKushiro City General Hospital · JPLeiden University Medical Center · NLPopulation Health Research Institute · CAUniversity of British Columbia Hospital · CA

Funding

UC Davis Alzheimer's Disease Core CenterP30AG010129 · NIA · UNIVERSITY OF CALIFORNIA DAVIS · PI DECARLI, CHARLES · 1991 to 2020
$28.3M
PRECURSORS OF STROKE INCIDENCE AND PROGNOSISR01NS017950 · NINDS · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI Hugo Javier Aparicio, Jose Rafael Romero · 1985 to 2026
$22.9M
Temporal Trends, Novel Imaging and Molecular Characterization of Preclinical and Clinical Alzheimer's Disease in the Framingham CohortsR01AG054076 · NIA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI DECARLI, CHARLES, SESHADRI, SUDHA · 2016 to 2020
$12.3M
CHARGE: Identifying Risk & Protective SNV for AD in ADSP Case-control SampleU01AG049505 · NIA · UNIVERSITY OF TEXAS HLTH SCIENCE CENTER · PI SESHADRI, SUDHA · 2014 to 2017
$3.0M
Brain aging and cardiovascular risk factors and diseaseZIAAG007480 · NIA · NATIONAL INSTITUTE ON AGING · PI LAUNER, LENORE J · 2011 to 2025
$2.7M
Risk Factors, Genetics and Cognition in Cerebral Microbleeds: Framingham StudyK23AG038444 · NIA · BOSTON UNIVERSITY MEDICAL CAMPUS · PI ROMERO, JOSE RAFAEL · 2011 to 2015
$644k
Cerebral Microbleeds in Young Adults: risk factors, biomarkers and geneticsR03AG048180 · NIA · BOSTON UNIVERSITY MEDICAL CAMPUS · PI ROMERO, JOSE RAFAEL · 2015 to 2016
$164k
THE FRAMINGHAM HEART STUDY-N01HC25195-268025195-268025195N01HC025195 · HC · TRUSTEES OF BOSTON UNIVERSITY · PI WOLF, PHILIP A · 2002 to 2006
–
Intramural NIH HHS Z99 AG999999Intramural NIH HHS ZIA AG007480NHLBI NIH HHS N01 HC025195NIA NIH HHS K23 AG038444NIA NIH HHS P30 AG010129NIA NIH HHS R01 AG054076NIA NIH HHS R03 AG048180NIA NIH HHS U01 AG049505NINDS NIH HHS R01 NS017950
6 · The paper itself

Abstract

Background Cerebral microbleeds can confer a high risk of intracerebral hemorrhage, ischemic stroke, death and dementia, but estimated risks remain imprecise and often conflicting. We investigated the association between cerebral microbleeds presence and these outcomes in a large meta-analysis of all published cohorts including: ischemic stroke/TIA, memory clinic, "high risk" elderly populations, and healthy individuals in population-based studies. Methods Cohorts (with > 100 participants) that assessed cerebral microbleeds presence on MRI, with subsequent follow-up (≥3 months) were identified. The association between cerebral microbleeds and each of the outcomes (ischemic stroke, intracerebral hemorrhage, death, and dementia) was quantified using random effects models of (a) unadjusted crude odds ratios and (b) covariate-adjusted hazard rations. Results We identified 31 cohorts ( n = 20,368): 19 ischemic stroke/TIA ( n = 7672), 4 memory clinic ( n = 1957), 3 high risk elderly ( n = 1458) and 5 population-based cohorts ( n = 11,722). Cerebral microbleeds were associated with an increased risk of ischemic stroke (OR: 2.14; 95% CI: 1.58-2.89 and adj-HR: 2.09; 95% CI: 1.71-2.57), but the relative increase in future intracerebral hemorrhage risk was greater (OR: 4.65; 95% CI: 2.68-8.08 and adj-HR: 3.93; 95% CI: 2.71-5.69). Cerebral microbleeds were an independent predictor of all-cause mortality (adj-HR: 1.36; 95% CI: 1.24-1.48). In three population-based studies, cerebral microbleeds were independently associated with incident dementia (adj-HR: 1.35; 95% CI: 1.00-1.82). Results were overall consistent in analyses stratified by different populations, but with different degrees of heterogeneity. Conclusions Our meta-analysis shows that cerebral microbleeds predict an increased risk of stroke, death, and dementia and provides up-to-date effect sizes across different clinical settings. These pooled estimates can inform clinical decisions and trials, further supporting cerebral microbleeds role as biomarkers of underlying subclinical brain pathology in research and clinical settings.

Indexed as

DementiaMagnetic Resonance ImagingStrokeBrain IschemiaCerebral HemorrhageCohort StudiesFemaleHumansMalePubMedRisk FactorsAntithromboticbrain microbleedscerebral microbleedscerebral small vessel diseaseintracerebral hemorrahagemagnetic resonance imaging

Identifiers

PMID29338604
PMCPMC6123529
OpenAlexW2792599811

What OpenQuestion holds

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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.