Clinical trial No longer in our active list Phase 2 Interventional Ages 50 to 85

Evaluating CT1812 for early Alzheimer's disease

Official title: Synaptic Therapy Alzheimer's Research Trial (START): A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Trial to Evaluate the Safety and Efficacy of CT1812 in Early Alzheimer's Disease Over 18 Months.

Run by Cognition Therapeutics · NCT05531656 · Data updated 2026-05-14

This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.

This study is testing if a new medication called CT1812 can help people with early Alzheimer's disease feel better and tolerate the treatment over 18 months.

Quick facts

PhasePhase 2
Study typeInterventional
Ages50 Years to 85 Years
SexAll
Enrollment540 (estimated)
SponsorCognition Therapeutics
Industry-sponsored
Locations46 sites (Birmingham, Alabama and 45 other locations)
Trial IDNCT05531656 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 50-85 with a diagnosis of mild cognitive impairment due to Alzheimer's disease or mild Alzheimer's dementia.

Probably not a fit

Patients with significant abnormalities in brain MRI or those with other primary degenerative dementias or neurodegenerative conditions may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This multicenter, randomized, double-blind, placebo-controlled Phase 2 study aims to assess the safety, efficacy, and tolerability of two doses of CT1812 in participants diagnosed with early Alzheimer's disease. Approximately 540 participants will be enrolled and randomized to receive either 100mg or 200mg of CT1812 or a placebo, taken orally once daily for 18 months. The study will utilize rigorous diagnostic criteria, including amyloid PET scans and neuroimaging, to ensure accurate participant selection.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for individuals with early Alzheimer's disease, potentially slowing disease progression.

How similar studies have gone: Other studies targeting early Alzheimer's disease have shown promise, but the specific approach of CT1812 is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Ages 50-85 years.
2. Diagnosis of either MCI due to AD or mild AD dementia.
3. MMSE 20-30 (inclusive).
4. Amyloid PET scan of the brain or CSF biomarkers consistent with AD.
5. Neuroimaging (MRI) obtained during screening consistent with the clinical diagnosis of Alzheimer's disease, as based on central read.

Exclusion Criteria:

1. Screening MRI of the brain indicative of significant abnormality.
2. Clinically significant abnormalities in screening laboratory tests.
3. Clinical or laboratory findings consistent with:

   1. Other primary degenerative dementia, (dementia with Lewy bodies, fronto-temporal dementia, Huntington's disease, Creutzfeldt-Jakob Disease, Down syndrome, etc.).
   2. Other neurodegenerative condition (Parkinson's disease, amyotrophic lateral sclerosis, etc.).
   3. Other infectious, metabolic or systemic diseases affecting the central nervous system (syphilis, present hypothyroidism, present vitamin B12, other laboratory values etc.)
4. A participant known to be actively infected with hepatitis B or hepatitis C at screening. History of acute/chronic hepatitis B or C and/or carriers of hepatitis B (seropositive for hepatitis B surface antigen \[HbsAg\] or anti-hepatitis C \[HCV\] antibody). Participants who have evidence of resolved hepatitis infection (e.g., HCV RNA negative) may be considered following discussion with the Medical Monitor.
5. A current DSM-V diagnosis of active major depression or GDS \> 6, schizophrenia, or bipolar disorder.

Where it's running

  • University of Alabama at Birmingham
    Birmingham, Alabama, United States
    Recruiting
  • Banner Alzheimer's Institute
    Phoenix, Arizona, United States
    Recruiting
  • Banner Sun Health Research Institute
    Sun City, Arizona, United States
    Recruiting
  • University of California
    Irvine, California, United States
    Recruiting
  • Stanford University
    Palo Alto, California, United States
    Recruiting
  • Yale University
    New Haven, Connecticut, United States
    Recruiting
Show 40 more locations
  • Georgetown University
    Washington, District of Columbia, United States
    Recruiting
  • Howard University
    Washington, District of Columbia, United States
    Recruiting
  • Brain Matters Research
    Delray Beach, Florida, United States
    Recruiting
  • Neuropsychiatric Research Center of Southwest Florida
    Fort Myers, Florida, United States
    Recruiting
  • Mayo Clinic,Jacksonville
    Jacksonville, Florida, United States
    Recruiting
  • JEM Research Institute
    Lake Worth, Florida, United States
    Recruiting
  • K2 Medical Research, LLC
    Maitland, Florida, United States
    Recruiting
  • Advanced Clinical Research Network, Corp
    Miami, Florida, United States
    Recruiting
  • Charter Research
    Orlando, Florida, United States
    Recruiting
  • Headlands Research Orlando
    Orlando, Florida, United States
    Recruiting
  • University of South Florida
    Tampa, Florida, United States
    Recruiting
  • Conquest Research, LLC
    Winter Park, Florida, United States
    Recruiting
  • Rush University Medical Center
    Chicago, Illinois, United States
    Recruiting
  • Indiana University
    Indianapolis, Indiana, United States
    Recruiting
  • Sanders-Brown Center on Aging
    Lexington, Kentucky, United States
    Recruiting
  • Brigham and Women's Hospital
    Boston, Massachusetts, United States
    Recruiting
  • Highlands Research Eastern MA
    Plymouth, Massachusetts, United States
    Recruiting
  • University of Michigan, Ann Arbor
    Ann Arbor, Michigan, United States
    Recruiting
  • Mayo Clinic, Rochester
    Rochester, Minnesota, United States
    Recruiting
  • Washington University School of Medicine
    St Louis, Missouri, United States
    Recruiting
  • Cleveland Clinic Lou Ruvo Center for Brain Health
    Las Vegas, Nevada, United States
    Recruiting
  • Mount Sinai School of Medicine
    New York, New York, United States
    Recruiting
  • Columbia University Medical Center
    New York, New York, United States
    Recruiting
  • University of Rochester Medical Center
    Rochester, New York, United States
    Recruiting
  • Wake Forest University Health Sciences
    Winston-Salem, North Carolina, United States
    Recruiting
  • Case Western Reserve University / University Hospitals
    Beachwood, Ohio, United States
    Recruiting
  • Ohio State University
    Columbus, Ohio, United States
    Recruiting
  • Central States Research, LLC
    Tulsa, Oklahoma, United States
    Recruiting
  • Summit Headlands LLC
    Portland, Oregon, United States
    Recruiting
  • Oregon Health & Science University
    Portland, Oregon, United States
    Recruiting
  • Abington Neurological Associates
    Abington, Pennsylvania, United States
    Recruiting
  • University of Pennsylvania
    Philadelphia, Pennsylvania, United States
    Recruiting
  • Butler Hospital
    Providence, Rhode Island, United States
    Recruiting
  • Ralph H. Johnson VA MC
    Charleston, South Carolina, United States
    Recruiting
  • Vanderbilt University Medical Center Center for Cognitive Medicine
    Nashville, Tennessee, United States
    Recruiting
  • University of Texas Southwestern Medical Center
    Dallas, Texas, United States
    Recruiting
  • Baylor College of Medicine
    Houston, Texas, United States
    Recruiting
  • Houston Methodist Neurological Institute
    Houston, Texas, United States
    Recruiting
  • University of Texas Health Science Center
    San Antonio, Texas, United States
    Recruiting
  • University of Wisconsin
    Madison, Wisconsin, United States
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Urolithin A for early Alzheimer’s disease: a test with a nutritional supplement

    This trial tests whether taking urolithin A in addition to standard care helps people with early Alzheimer’s or mild cognitive impairment show better biomarkers and cognition.

    Recruiting University Hospital, Akershus · Prague · NCT07842146

  • Stem Cells plus monoclonal antibodies for mild cognitive impairment or early Alzheimer's disease

    This study tests whether one infusion of human mesenchymal stem cells added to standard antibody therapy can slow cognitive and daily-living decline in people with mild Alzheimer's or mild cognitive impairment who are already on approved antibody treatment.

    Recruiting Phase 2 University of Miami · Miami, Florida · NCT07512362

  • L. lactis CKDB001 for people with early Alzheimer's disease

    This 24-week study will test if oral L. lactis CKDB001 helps adults aged 55–85 with early Alzheimer's disease and positive amyloid PET compared with a placebo.

    Recruiting at 2 sites CKD Bio Corporation · Gyeonggi-do and 1 other locations · NCT07496021

  • TTYP01 tablets for people with early symptomatic Alzheimer's disease

    This study will test whether two doses of TTYP01 tablets (60 mg and 90 mg) help people aged 60–85 with early symptomatic Alzheimer's disease (MCI due to AD or mild AD dementia) compared with placebo.

    Recruiting Phase 2 Shanghai Auzone Biological Technology Co., Ltd. · Chongqing, Chongqing Municipality · NCT07252440

  • MK-2214 for people with early Alzheimer's disease

    This trial will test whether the drug MK-2214 can slow the spread of tau protein in the brains of people with mild cognitive impairment or mild dementia from Alzheimer's disease.

    Recruiting at 79 sites Phase 2 Merck Sharp & Dohme LLC · Irvine, California and 79 other locations · NCT07033494

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.