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RecruitingNCT07118137MemADUpdated Aug 13, 2026

Memory Deterioration in Alzheimer Disease

An observational study in Alzheimer Disease, Neurodegenerative Diseases and Magnetic Resonance Imaging, sponsored by Norwegian University of Science and Technology. Recruiting at 1 site in Norway. Open to participants aged 55 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-08-13.

Sponsored by Norwegian University of Science and Technology · Observational

From the registry’s dates

  • Started Oct 2023; still recruiting 3 years later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
30
Ages
55 Years and older
Sex
All
01

Study summary

Semantic AD

02

Conditions studied

  • Alzheimer Disease
  • Neurodegenerative Diseases
  • Magnetic Resonance Imaging
  • Memory Impairment
03

In context

Alzheimer Disease

3,965 studies on the registry are indexed under Alzheimer Disease; 926 are open to participants now.

This study's planned enrollment of 30 is below the median of 200 across 814 observational studies indexed under Alzheimer Disease.

Browse Alzheimer Disease studies →

Lead sponsor

Norwegian University of Science and Technology is the lead sponsor of 495 studies on the registry; 48 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
55 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Participants will be recruited from the region of Trøndelag, Norway. The study population will include individuals with cognitive symptoms as well as cognitively healthy, age- and sex-matched controls. Recruitment will take place through memory clinics and primary care services. All participants will undergo standardized assessments and data collection as specified in the study protocol.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Confirmed diagnosis based on current ICD criteria for AD or MCI .
  • >55years.
  • Norwegian native speaker
  • Lives at home and not in a health institution

Exclusion criteria

Exclusion Criteria:

  • Patients with severe cognitive impairment that prevents assessment with the selected modalities (planned cut-off: CDR > 2).
  • Presence of brain tumors.
  • History of traumatic brain injury.
  • History of cranial surgery.
  • to the selected imaging modalities (e.g., 7T MRI or EEG).
  • Diagnosis of other neurodegenerative diseases such as Parkinson's disease or ALS.

    7T MRI contraindications:

  • Large tattoos close to the head region, permanent makeup or unremoveable piercings
  • Certain models of pacemakers (if pacemaker implantet, MRI physicist at 7T-lab will be conferred)
  • Implantet metal in body (clips, stents, prothesis, skrews, plates, teeth etc.)
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
30 participants (estimated)
Target follow-up
1 Year
Patient registry
Yes
Biospecimen retention
Samples with dna

Groups and cohorts

  • Mild Alzheimer

    Patients above 65 diagnosed with Alzheimer's Disease according to appropriate ICD-criterias.

    Device: 7T MRI · Device: EEG · Biological: Blood samples · Biological: Stool samples · Diagnostic Test: Neuropsychologic test (MoCA)

  • Controls

    Age- and gender-matched control group.

    Device: 7T MRI · Device: EEG · Biological: Blood samples · Biological: Stool samples · Diagnostic Test: Neuropsychologic test (MoCA)

Interventions

  • Device7T MRI

    Resting and activity-based MRI. Dring activity based MRI, the participant will complete tasks testing semantic memory.

    Also known as: Magnetic Resonance imaging

  • DeviceEEG

    Resting-state EEG

    Also known as: Electrophysiology

  • BiologicalBlood samples

    Blood samples taken for analysis of central blood biomarkers.

  • BiologicalStool samples

    Stool samples collected to identify distinct gut-microbiota compositions between the groups.

    Also known as: Fecal Speciments

  • Diagnostic testNeuropsychologic test (MoCA)

    Map cognition with clinically well-established neuropsychology test

06

What researchers measure

Primary outcomes

  1. Understand which individual differences are observed among patients with Alzheimer's disease (AD).

    This outcome will characterize individual variability among patients diagnosed with Alzheimer's disease based on clinical symptoms, cognitive assessments, neuroimaging findings (7T MRI), electrophysiological data (EEG), and biological samples (blood and stool). The goal is to identify patterns or subtypes that may reflect distinct disease mechanisms or progression profiles.

    Time frame: From enrollment to end of follow-up at 1 year.

  2. Compare changes in the brain, blood, and stool samples between dementia patients and healthy controls.

    Assess differences between dementia patients and cognitively healthy controls using multimodal data, including 7T MRI for brain structure, EEG, blood biomarkers, and gut microbiome profiles from stool samples. The aim is to identify biological and neurological markers associated with dementia-related changes.

    Time frame: From project enrollment to end of follow-up at 1 year.

Secondary outcomes

  1. Understand which individuals with mild cognitive impairment (MCI) go on to develop Alzheimer's disease (AD).

    Identify early clinical, neuroimaging, and biological markers associated with progression from MCI to AD. This research question aims to improve early diagnosis and risk stratification in individuals with MCI.

    Time frame: From enrollment to the end of follow-up time at 1 year.

Other outcomes

  1. Compare brain changes in patients with Alzheimer's disease (AD) to those with other types of dementia.

    This outcome will investigate brain changes in patients with Alzheimer's disease compared to those with other dementia types using the different modalities included in the project.

    Time frame: From project encrollment to end of follow-up at 1 year.

07

Study locations

1 of 1 sites recruiting
  • Norwegian University of Sciene and Technology / Norges teknisk-naturvitenskapelige universitet (NTNU)
    Trondheim, Trønderlag 7030, Norway
    Recruiting
08

References and documents

Individual participant data

Plan to share: No — All data will be anonymized.

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Oct 2023 (actual). Primary completion is estimated for Dec 2027, 50 months after the start.

Of 364 non-industry observational studies under Alzheimer Disease, half reached primary completion within 81 months of starting (the median), counting those still running; a quarter within 39 and three quarters within 203. This study's planned 50 months is below that.

Counting every sponsor, half of 405 studies reached it within 67 months; a quarter within 35 and three quarters within 171.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 4, 2025
First posted
Aug 12, 2025
StartActual
Oct 15, 2023
Primary completionEst.
Dec 31, 2027
CompletionEst.
Dec 31, 2027
Last update
Aug 13, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Aug 13, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07118137
Responsible party
Sponsor
First posted
Aug 12, 2025
Start date
Oct 15, 2023
Primary completion
Dec 31, 2027 (estimated)
Completion
Dec 31, 2027 (estimated)
Last update
Aug 13, 2026

Study contacts

Axel Sandvig Professor, MD & PhD
Contact
axel.sandvig@ntnu.no
+4745840578
Varanann Varathalingam
Contact
varananv@ntnu.no
Axel Sandvig Professor, MD PhD
principal investigator · Norwegian University of Science and Technology (NTNU)

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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