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Brain test may predict Alzheimer's drug response

NCT ID NCT03703856

Symptom relief Sponsor: University of California, San Diego Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether simple brain function measures can predict which Alzheimer's patients will respond to the drug memantine. 53 participants with mild-to-moderate Alzheimer's took memantine or placebo, then all received memantine for 24 weeks. The goal was to see if early brain responses could guide personalized treatment.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Memantine
What this could lead to
If successful, this could help doctors predict which Alzheimer's patients will benefit most from memantine, leading to more personalized treatment.
What could go wrong
This is a small, completed Phase 4 study with only 53 participants, so results may not apply to all Alzheimer's patients. The benefit of memantine is modest and not guaranteed.

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.

Phase

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

53 people

The number who actually took part.

Started

Jan 2019

Finished

Dec 2025

Lead sponsor

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.

Ages

50 to 83 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show 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: 1. Alzheimer's Disease Research Center-confirmed diagnosis of AD 2. Mini-Mental State Examination (MMSE) score 10-22 OR a Montreal Cognitive Assessment (MOCA) score of 15-24 3. Age 50-83 y 4. Knowledgeable caregiver 5. Ambulatory 6. Medically stable; 7. Audiometric testing (detection \< or = to 45 db(A) at 1000 Hz) 8. Informed consent Exclusion: 1. Active systemic illness (e.g. heart disease, liver failure, renal insufficiency, cancer, HIV, tuberculosis, Hepatitis C) 2. Current psychiatric or neurologic illness other than AD 3. History of vascular disease, myocardial infarction, cerebrovascular accidents, transient ischemic attack, seizure, head injury with loss of consciousness; substance dependence (including alcohol and Opioid) 4. Past treatment with memantine; unable to tolerate acetylcholinesterase inhibitor 5. Investigational drug treatment \< 30 d of screening 6. Current meds: amantadine, riluzole, other pro-cognitive medication, opioids 7. Positive urine toxicology for non-prescribed psychoactive substance 8. Actively enrolled in cognitive remediation therapy

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Conditions

The condition(s) this trial relates to.

Alzheimer disease

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Alzheimer disease

Contacts and locations

Locations

  • Clinical Teaching Facility (CTF-B102) at UCSD Medical Center

    San Diego, California, 92103, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.