Why do some Alzheimer's patients repeat themselves? a study digs into the Brain's memory glitch
NCT ID NCT07732842
First seen Jul 29, 2026 · Last updated Sep 11, 2026 · Updated 3 times
Summary
This study investigates repetitive behaviors—like repeating words or actions—in people with Alzheimer's disease. Researchers want to understand how common these behaviors are, what types occur, and whether they are linked to memory problems or lack of awareness of the condition. The study compares Alzheimer's patients with and without repetitive behaviors, as well as healthy volunteers, using questionnaires and memory tests.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could help explain why some Alzheimer's patients develop repetitive behaviors and point toward better ways to manage them.
- What could go wrong
- This is an observational study, not a treatment trial, so it will not directly lead to new therapies. The findings may not apply to all Alzheimer's patients.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 103 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2021
- Expected to finish
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Feb 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
The study population consists of: * 42 patients RB+ and 30 patients RB- patients recruited at the CMRR in Limoges and Nantes during their follow-up appointments for Alzheimer's disease. * 30 healthy subjects who are caregivers for patients monitored at the CMRR in Limoges. * And the patient with AA anterograde amnesia, who was recruited as part of his follow-up at the CMRR in Limoges for his severe anterograde amnesia caused by brain damage to the fornix pillars following complications from neurosurgery.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: I- RB+ (n=42) and RB- (n=30) groups : 1. MMSE \> 20 2. 1 reliable family caregiver identified per patient 3. Patients under legal protection (guardianship/curatorship) or not 4. Selection: 4.a. AD patients with an SRI score \> 0 will constitute the RB+ subgroup. 4.b. Only the first 30 patients included will undergo V2, V3, and V4. The first 30 AD patients included with an SRI score = 0 will constitute the RB- subgroup. II- Control group: healthy subjects (n=30) 1. Healthy subjects 2. MMSE ≥ 26/30 3. Men and women matched to AD patients in terms of age and sociocultural level. 4. Healthy subjects will be included by the CMRR in Limoges III- Control group: Patient with anterograde amnesia (AA) (n=1): 1. The patient with anterograde amnesia is a patient who participated in the ANISAAFORNIX study (another study submitted by the investigator) and is included in this study due to rich RB symptomatology. He is a 54-year-old man with lesions of the fornix following complications from neurosurgery, which led to severe anterograde amnesia. This patient does not have AD. 2. This patient is under legal protection (guardianship). 3. Patient monitored and included at the CMRR in Limoges. Exclusion Criteria: I- RB+ and RB- groups and healthy subjects: 1. Isolated participants (without an identified caregiver) (RB+ and RB- groups) 2. Participants must not have a history of alcohol or other substance dependence in the past 12 months. 3. Participants must not have any other neurological condition (with the exception of patients with AA anterograde amnesia). Any history of moderate to severe head trauma, stroke, or developmental disorders is a criterion for exclusion.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Esquirol Hospital Center
RECRUITINGLimoges, New Aquitaine, 87025, France
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