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
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 50 Years to 85 Years |
| Sex | All |
| Enrollment | 540 (estimated) |
| Sponsor | Cognition Therapeutics Industry-sponsored |
| Locations | 46 sites (Birmingham, Alabama and 45 other locations) |
| Trial ID | NCT05531656 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
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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
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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
- Study coordinator: Theresa Devins, DrPH, MS
- Email: clinicaltrials@cogrx.com
- Phone: 888-745-1050
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.
-
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.
-
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.
-
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.
-
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.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.