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Can a common Alzheimer's drug clear lupus brain fog?

NCT ID NCT03527472

Symptom relief Sponsor: Vanderbilt University Medical Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 memantine, a drug used for Alzheimer's, can help with thinking and memory problems in people with lupus. About 111 adults with lupus and cognitive issues took either memantine or a placebo for 14 weeks. The goal was to see if the drug safely improves brain function in this specific group.

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 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

111 people

The number who actually took part.

Started

Aug 2018

Finished

Feb 2026

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

18 to 70 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 Criteria: 1. Meet American College of Rheumatology (ACR) criteria for SLE 2. Report NPSLE symptoms on the screening survey recommended by EULAR guideline but limited to the psychiatric manifestations questions 3. Score ≤ 85 on the RBANS total index (≤ 1 SD below the normative mean of 100) Exclusion Criteria: 1. Male and female subjects \<18 or \>60 years 2. Change in medication that may affect mood or cognition including prednisone, antidepressant medications, or stimulants within the last 4 weeks 3. Regular (daily) use of opioids or other drugs of abuse including heavy alcohol or marijuana use 4. Metabolic derangement defined as liver function tests \>3x upper limit of normal or severe renal disease defined as calculated creatinine clearance \<30 mL 5. Severe psychiatric disease including schizophrenia, psychosis, suicidal depression 6. Other factors which in the opinion of the investigator could potentially impact the study outcomes (e.g., underlying disease, medications, history)\* or prevent the participant from completing the protocol (poor compliance or unpredictable schedule) 7. Inability or refusal to give informed consent for any reason including a diagnosis of dementia or significant cognitive impairment\*\* 8. Patients who are pregnant 9. Patients who are enrolled in other investigational drug studies

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Conditions

The condition(s) this trial relates to.

Cognitive Dysfunction systemic lupus erythematosus

As listed by the trial registrant

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

Lupus erythematosus, systemic

Contacts and locations

Locations

  • The Cleveland Clinic

    Cleveland, Ohio, 44195, United States

  • The University of Texas Health Science Center, Houston

    Houston, Texas, 77030, United States

  • Vanderbilt University Medical Center

    Nashville, Tennessee, 37232, United States

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