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Development of a Genomics-based Multimodal Prediction Model for Post-stroke Vascular Dementia

17. juni 2026 opdateret af: Seyoung Shin

Development of a Genomics-based Multimodal Prediction Model for Post-stroke Vascular Dementia: An Ambidirectional Patient-Control Cohort Study

To collect large-scale multimodal data, including genomic information, neuroimaging, neurophysiological measures, cognitive assessments, and clinical characteristics from stroke survivors and healthy controls.

This study aims to develop and validate an integrated prediction model for identifying individuals at high risk of post-stroke vascular dementia and to establish a foundation for precision medicine approaches in stroke-related cognitive impairment.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Detaljeret beskrivelse

This study aims to establish a comprehensive multimodal dataset integrating genomic information, clinical characteristics, neuroimaging, neurophysiological measures, and longitudinal cognitive assessments in stroke survivors and cognitively healthy controls. The study includes participants from the subacute to chronic stages after stroke and follows them longitudinally to capture changes in cognitive and functional outcomes over time.

By combining whole genome sequencing, magnetic resonance imaging (MRI), electroencephalography (EEG), functional near-infrared spectroscopy (fNIRS), and clinical assessments, the study seeks to characterize factors associated with cognitive decline and vascular dementia following stroke.

The collected data will be used to develop and validate an integrated multimodal prediction model capable of identifying individuals at elevated risk of post-stroke vascular dementia. The findings are expected to improve risk stratification, support individualized monitoring and intervention strategies, and contribute to the development of precision medicine approaches for stroke survivors.

Undersøgelsestype

Observationel

Tilmelding (Anslået)

300

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

    • Gyeonggi-do
      • Gyeonggi-do, Gyeonggi-do, Sydkorea, 13497

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ja

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Participants will be recruited from the Department of Rehabilitation Medicine at CHA Bundang Medical Center, Republic of Korea.

Beskrivelse

Inclusion Criteria:

  1. Healthy Control Group:

    • Adults aged 19 years or older.
    • Able to be age- and sex-matched to the stroke cohort.
    • No history of stroke, transient ischemic attack (TIA), or other central nervous system disorders.
    • Cognitive function within the normal range for age and education level based on screening assessments (K-MMSE and K-MoCA).
    • Able to understand the study procedures and provide written informed consent.
  2. Stroke Patient Group:

    • Adults aged 19 years or older.
    • First-ever ischemic or hemorrhagic stroke confirmed by CT or MRI.
    • Enrolled in one of the following strata according to time since stroke onset:

Stratum A: 7 days to 3 months after stroke onset. Stratum B: >3 months to 12 months after stroke onset. Stratum C: >12 months to 36 months after stroke onset.

- Able to understand the study procedures and provide written informed consent, or consent provided by a legally authorized representative when applicable.

Exclusion Criteria:

  1. Healthy Control Group:

    • Current severe psychiatric disorders that may affect cognitive function (e.g., major depression, schizophrenia) or use of related medications.
    • Strong family history of hereditary cerebrovascular disorders (e.g., CADASIL).
    • Severe medical illness considered inappropriate for study participation.
    • Any condition that, in the opinion of the investigator, would make participation unsuitable.
  2. Stroke Patient Group:

    • Impaired ability to provide consent (MMSE <10) without an accompanying caregiver or legally authorized representative.
    • History of dementia due to causes other than stroke (e.g., Alzheimer's disease) prior to stroke onset.
    • History of major neurological disorders affecting cognition prior to stroke onset (e.g., Parkinson's disease, brain tumor, multiple sclerosis).
    • Severe aphasia or impaired consciousness preventing completion of cognitive assessments.
    • Current or pre-stroke severe psychiatric disorders that may affect cognitive function (e.g., major depression, schizophrenia) or use of related medications.
    • Strong family history of hereditary cerebrovascular disorders (e.g., CADASIL).
    • Contraindication to MRI (e.g., metallic implants) or refusal to provide blood samples for genomic analysis.
    • Any condition that, in the opinion of the investigator, would make participation unsuitable.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Stroke patients
Adults aged 19 years or older with first-ever ischemic or hemorrhagic stroke. Participants may be enrolled during the subacute or chronic stage after stroke and will undergo genomic, neuroimaging, neurophysiological, cognitive, and functional assessments with longitudinal follow-up for up to 36 months.
Healthy controls
Cognitively normal adults aged 19 years or older without a history of stroke, transient ischemic attack, or other major central nervous system disorders. Participants will undergo genomic, neuroimaging, neurophysiological, cognitive, and functional assessments and follow-up evaluations.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Mini Mental Status Examination
Tidsramme: Baseline to 36 months
Mini Mental State Examination is a 30-question assessment of cognitive function that evaluates attention and orientation, memory, registration, recall, calculation, language, and ability to draw a complex polygon (range 0-30). Higher scores indicate better cognitive function.
Baseline to 36 months
Korean Montreal Cognitive Assessment
Tidsramme: Baseline to 36 months
The Korean Montreal Cognitive Assessment is a cognitive screening tool designed to detect mild cognitive impairment. It evaluates multiple cognitive domains including attention, executive function, memory, language, visuospatial ability, abstraction, calculation, and orientation (range 0-30). Higher scores indicate better cognitive function.
Baseline to 36 months
Clinical Dementia Rating
Tidsramme: Baseline to 36 months
The Clinical Dementia Rating is a clinician-rated scale used to assess the severity of cognitive impairment and dementia across six domains including memory, orientation, judgment and problem solving, community affairs, home and hobbies, and personal care (range 0-3). Higher scores indicate greater cognitive impairment and worse outcomes.
Baseline to 36 months
Functional Ambulation Category
Tidsramme: Baseline to 36 months
The Functional Ambulation Categories is a 5-point functional walking test that evaluates ambulation ability, determining how much human support the patient requires when walking, regardless of whether or not they use a personal assistive device (range 0-5). Higher scores indicate greater independence in ambulation.
Baseline to 36 months
Modified Barthel Index
Tidsramme: Baseline to 36 months
The Modified Barthel Index is a scale used to measure disability or dependence in activities of daily living in stroke survivors (range 0-100). Higher scores indicate greater independence in activities of daily living.
Baseline to 36 months
Berg Balance Scale
Tidsramme: Baseline to 36 months
The Berg Balance Scale is a 14-item performance-based measure used to assess static and dynamic balance abilities and risk of falling in individuals with neurological disorders (range 0-56). Higher scores indicate better balance performance and lower risk of falling.
Baseline to 36 months
Electroencephalography Delta-Alpha Ratio
Tidsramme: Baseline to 36 months
The delta-alpha ratio (DAR) is a quantitative electroencephalographic measure calculated as delta power divided by alpha power. Higher DAR values indicate greater electroencephalography slowing and are associated with impaired brain function.
Baseline to 36 months
Electroencephalography Functional Connectivity Index
Tidsramme: Baseline to 36 months
Functional connectivity indices derived from electroencephalography recordings to assess connectivity between brain regions and overall brain network organization.
Baseline to 36 months
Functional Near-Infrared Spectroscopy (fNIRS)
Tidsramme: Baseline to 36 months
Functional near-infrared spectroscopy is a non-invasive neuroimaging technique used to assess cortical activation by measuring changes in oxygenated and deoxygenated hemoglobin during task performance.
Baseline to 36 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

1. august 2026

Primær færdiggørelse (Anslået)

31. december 2030

Studieafslutning (Anslået)

31. december 2030

Datoer for studieregistrering

Først indsendt

15. juni 2026

Først indsendt, der opfyldte QC-kriterier

17. juni 2026

Først opslået (Faktiske)

22. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

22. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

17. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 2026-04-084

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