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The Leuven Longitudinal Late-Life Depression Study (L4D)

14. august 2026 opdateret af: Universitaire Ziekenhuizen KU Leuven

The goal of this observational study is to learn about the long-term effects of late-life depression (LLD) in adults aged 60 and older. LLD is depression that begins for the first time later in life. Patients with this condition may feel sad for a long time or lose interest in activities they used to enjoy. They may also have problems with sleep, energy, or concentration. In some patients, this depression comes with changes in thinking and memory, which may be linked to a higher risk of dementia.

The investigators believe that changes in the brain play a role in this condition. The main questions this study aims to answer are:

Do patients with late-life depression have a higher risk of memory decline, dementia, return of depression, hospital stays, or death compared to healthy people? Can brain scans and blood tests help predict how the illness will develop over time?

The investigators will compare patients with late-life depression to healthy people of the same age and sex. This will help clarify how the illness develops over several years.

This is a follow-up study, which means no new treatment is being tested. The investigators will recruit participants from previous studies, drawn from two cohorts with a mean follow-up time since inclusion of 12 years and 6 years. The investigators collect information about health, memory, and mood, and compare it with earlier measurements. To do this, the investigators use existing information from past studies, medical records, brain scans, and blood samples.

Participants can take part if they:

Are at least 60 years old Took part in one of the earlier studies Give written permission to join

Participants may be asked to:

Have a conversation and take memory tests Give a blood sample Have a brain scan

These tests can take place in the hospital or at the participant's home. If a participant does not want to do the tests again, the investigators can ask their family doctor for important health information, with the participant's permission.

Studieoversigt

Status

Tilmelding efter invitation

Betingelser

Undersøgelsestype

Observationel

Tilmelding (Anslået)

178

Kontakter og lokationer

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

Studiesteder

    • Flanders
      • Leuven, Flanders, Belgien, 3000
        • UZ Leuven

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

  • Ældre voksen

Tager imod sunde frivillige

Ja

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Participants are adults aged 60 years and older who took part in one of the earlier related studies. This group includes people diagnosed with late-life depression as well as healthy adults of the same age and sex who serve as a comparison group.

Participants are recruited from the existing cohort of these earlier studies, using their prior study data, medical records, brain scans, and blood samples. Participants will be asked to return for follow-up assessments, which can take place in the hospital or at their home.

Beskrivelse

Inclusion Criteria:

  • Voluntary written informed consent of the participant or their legally authorized representative has been obtained prior to any screening procedures.
  • At least 18 years of age at the time of signing the Informed Consent Form (ICF).
  • Participants were included in the previous studies.

Exclusion Criteria:

  • Not applicable, since participants who met any exclusion criteria were already excluded from the previous studies.

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
Sund kontrol
Late-life depression group
Same interventions in both groups

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Number of Participants Who Died
Tidsramme: From enrollment in the initial cross-sectional study until date of death from any cause, assessed up to 12 years for cohort 1 and up to 6 years for cohort 2.
From enrollment in the initial cross-sectional study until date of death from any cause, assessed up to 12 years for cohort 1 and up to 6 years for cohort 2.
Number of Participants with Dementia
Tidsramme: From enrollment in the initial cross-sectional study to the follow-up assessment, an average of 12 years for cohort 1 and 6 years for cohort 2
Participants with a MMSE score lower or equal to 10, and a CDR scale score higher or equal to 2, will be classified as having dementia.
From enrollment in the initial cross-sectional study to the follow-up assessment, an average of 12 years for cohort 1 and 6 years for cohort 2

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Rate of depressive episodes
Tidsramme: From enrollment in the initial cross-sectional study to the follow-up assessment, an average of 12 years for cohort 1 and 6 years for cohort 2. If deceased, up until passing away.
Hospitalisations for depression, referrals to psychotherapy or psychiatry, suicide attempts
From enrollment in the initial cross-sectional study to the follow-up assessment, an average of 12 years for cohort 1 and 6 years for cohort 2. If deceased, up until passing away.

Samarbejdspartnere og efterforskere

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

Sponsor

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

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 (Faktiske)

30. juli 2026

Primær færdiggørelse (Anslået)

31. august 2026

Studieafslutning (Anslået)

31. december 2029

Datoer for studieregistrering

Først indsendt

3. august 2026

Først indsendt, der opfyldte QC-kriterier

14. august 2026

Først opslået (Faktiske)

17. august 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

17. august 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

14. august 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • S71965

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

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Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .