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Could a Vaccine-Like shot slow Alzheimer's? new trial launches

NCT ID NCT05606341

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This early-stage trial tests a drug called CpG1018, which aims to stimulate the immune system to fight Alzheimer's disease. It involves 18 people with mild cognitive impairment or mild Alzheimer's. The main goal is to check safety, not yet to see if it works.

What this could mean

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

Active substance
CpG1018 (a drug that stimulates the immune system)
What this could lead to
If safe, this could point toward a new way to slow early Alzheimer's by boosting the body's natural immune response.
What could go wrong
This is a very early, small Phase 1 trial focused on safety, not effectiveness. It may not show any benefit, and there are risks like autoimmune reactions or brain swelling.

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 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 18 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2023

Expected to finish

Nov 2026

An estimate. End dates often move.

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

60 to 85 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. 65-85 years of age 2. MCI due to AD or mild AD dementia per NIA-AA specified criteria published in 2018 3. Montreal Cognitive Assessment (MoCA) score ≥17 AND; 4. Positive Florbetaben PET amyloid scan, or other positive PET amyloid scan performed within one year of study enrollment 5. Must be able to provide consent or assent (If applicable). 6. Must be willing and able to participate in all study related procedures. 7. Must have a reliable study partner to provide information on the subject's cognitive and functional status. Study partner must have sufficient contact with the subject, as determined by the PI, and be available to accompany the subject to clinic visits or by phone. Exclusion Criteria: 1. History of psychiatric illness (e.g. hallucinations, major depression, suicidal ideation or delusions) that could interfere with completion of study related procedures as determined by PI 2. History of autoimmune disorders or antibody-mediated disease, severe asthma, or other serious infection or systemic illness, as determined by PI 3. Use of corticosteroids or immunosuppressive drugs within 30 days of study entry 4. History of splenectomy 5. Renal impairment 6. Use of chloroquine within 8 weeks of study entry 7. Inability to undergo MRI imaging 8. History of TIA, stroke or seizures within 12 months of screening 9. Any neurological condition other than AD that could contribute to cognitive impairment (including related to possible "long COVID") as determined by PI 10. Participation in any other current AD investigational interventional trial 11. Current use of an anti-coagulant 12. Current use of drugs that are major substrates of cytochrome P450 (CYP) enzyme 1A2 13. Recent exposure to COVID-19 infection within 14 days or recent onset of symptoms within 14 days that may be related to COVID-19 infection

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Conditions

The condition(s) this trial relates to.

Alzheimer disease Cognitive Dysfunction

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.

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    1 site. The list below names each one and where it is.

  3. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  4. 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

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • NYU Langone Health

    RECRUITING

    New York, New York, 10016, United States

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