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Mild to Moderate Alzheimer's DiseasePhase 2NCT03507790

A Study to Evaluate the Safety and Efficacy of CT1812 in Subjects With Mild to Moderate Alzheimer's Disease.

A Phase 2 study testing CT1812 in people with Mild to Moderate Alzheimer's Disease, run by Cognition Therapeutics at 32 sites in 5 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

This is a multi-center, randomized, double-blind, placebo-controlled, parallel group 36 week multicenter Phase 2 study of two doses of CT1812 in adults with mild to moderate Alzheimer's Disease (AD). Read more about this study

Who is it for?
Ages 50 to 85 years
Conditions the study is for
Mild to Moderate Alzheimer's Disease
What is being tested?
CT1812
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
153 participants
Where
32 sitesin 5 countries
Study dates
10 Oct 2018to 29 May 2024
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 50 to 85 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Men, and women of non-childbearing potential, 50-85 years of age inclusively, with a diagnosis of mild to moderate Alzheimer's disease according to the 2011 NIA-AA criteria and at least a 6 month decline in cognitive function documented in the medical record.
  • Non-childbearing potential for women is defined as postmenopausal (last natural menses greater than 24 months) or undergone a documented bilateral tubal ligation or hysterectomy. If last natural menses less than 24 months, a serum FSH value confirming post-menopausal status can be employed.
  • Male participants who are sexually active with a woman of child-bearing potential must agree to use condoms during the trial and for 3 months after last dose unless the woman is using an acceptable means of birth control. Acceptable forms of birth control include abstinence, birth control pills, or any double combination of: intrauterine device (IUD), male or female condom, diaphragm, sponge, and cervical cap.
  • Diagnostic confirmation by amyloid PET with florbetaben or another approved amyloid PET ligand. Previous amyloid imaging study with a positive result will be accepted. If none is available, then amyloid PET will be conducted during screening. Diagnostic confirmation by a CSF sample collected at the screening visit lumbar puncture in place of amyloid PET will also be acceptable
  • Neuroimaging (MRI) obtained during screening consistent with the clinical diagnosis of Alzheimer's disease and without findings of significant exclusionary abnormalities (see exclusion criteria, number 4). An historical MRI, up to 1 year prior to screening, may be used as long as there is no history of intervening neurologic disease or clinical events (such as a stroke, head trauma etc.) and the subject is without clinical symptoms or signs suggestive of such intervening events.).
  • MMSE 18-26 inclusive.

Who cannot join

  • Screening MRI (or historical MRI, if applicable) of the brain indicative of significant abnormality, including, but not limited to, prior hemorrhage or infarct >1 cm3, >3 lacunar infarcts, cerebral contusion, encephalomalacia, aneurysm, vascular malformation, subdural hematoma, hydrocephalus, space-occupying lesion (e.g. abscess or brain tumor such as meningioma). If a small incidental meningioma is observed, the medical monitor may be contacted to discuss eligibility..
  • Clinical or laboratory findings consistent with:
  • Other primary degenerative dementia, (dementia with Lewy bodies, fronto-temporal dementia, Huntington's disease, Creutzfeldt-Jakob Disease, Down syndrome, etc.).
  • Other neurodegenerative condition (Parkinson's disease, amyotrophic lateral sclerosis, etc.).
  • Seizure disorder.
  • Other infectious, metabolic or systemic diseases affecting the central nervous system (syphilis, present hypothyroidism, present vitamin B12 or folate deficiency, other laboratory values etc.).
  • A current DSM-V diagnosis of active major depression, schizophrenia or bipolar disorder. Subjects with depressive symptoms successfully managed by a stable dose of an antidepressant are allowed entry.
  • Clinically significant, advanced or unstable disease that may interfere with outcome evaluations.

Trial locations and contacts

32 sites in 5 countries.

32 sites in 5 countries

United States12 sites
  • JEM Research Institute

    Atlantis, Florida, 33462

  • Alzheimer's Memory Center

    Charlotte, North Carolina, 28270

  • The Ohio State University - Wexner

    Columbus, Ohio, 43221-3502

  • Charter Research

    Lady Lake, Florida, 32159

  • ClinCloud, LLC

    Maitland, Florida, 32751

  • Allied Biomedical Research Institute

    Miami, Florida, 33155

  • Neuro Behavirol Clinical Research C

    North Canton, Ohio, 44720

  • 21st Century Neurology/ Xenoscience Inc.

    Phoenix, Arizona, 85004

  • Imaging Endpoints

    Scottsdale, Arizona, 85258

  • Ki Health Partners, LLC dba New England Institute for Clinical Research

    Stamford, Connecticut, 06905

  • Compass Research LLC- Bioclinica Research

    The Villages, Florida, 32162

  • ClinCloud

    Viera, Florida, 32940

Other trials in United States

Czechia8 sites
  • Neuro Health Centrum ltd

    Brno, 628 00

  • NeuropsychiatrieHK S.R.O

    Hradec Králové, 503 41

  • A-Shine S.R.O

    Pilsen, 30100

  • Clintrial S.R.O

    Prague, 100 00

  • Neuropsychiatrie s.r.o.

    Prague, 16 000

  • Forbeli S.R.O

    Prague, 160 00

  • INEP

    Prague, 18600

  • Vestra Clinics

    Rychnov nad Kněžnou, 51601

Other trials in Czechia

Spain5 sites
  • Fundación ACE

    Barcelona, 08028

  • Hospital Clinico Universitario Virgen De La Arrixaca

    El Palmar, 30120

  • Centro de Salud San Juan

    Salamanca, 37005

  • Hospital Victoria EUGENIA. Unidad de Neurociencias.

    Seville, 41009

  • Fundación Neuropolis - Hospital Viamed Montecanal

    Zaragoza, 5000

Other trials in Spain

Australia4 sites
  • St Vincent's Hospital Sydney

    Ivanhoe, Victoria, 3079

  • Alfred Health

    Melbourne, Victoria, 3004

  • Australian Alzheimer's Research Foundation

    Nedlands, Western Australia, 6009

  • Melbourne Health

    Parkville, Victoria, 3050

Other trials in Australia

Netherlands3 sites
  • Brain Research Den Bosch

    's-Hertogenbosch, 5223 LA

  • Brain Research Center Amsterdam

    Amsterdam, 1081 GN

  • Brain Research Center Zwolle

    Zwolle, 8025 AZ

Other trials in Netherlands

About this study

Official title: A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Phase 2 Study to Evaluate the Safety and Efficacy of CT1812 in Subjects With Mild to Moderate Alzheimer's Disease.

This is a multi-center, randomized, double-blind, placebo-controlled, parallel group 36 week multicenter Phase 2 study of two doses of CT1812 in adults with mild to moderate Alzheimer's Disease (AD).

Read the detailed description

This is a multi-center, randomized, double-blind, placebo-controlled, parallel group 36 week multicenter Phase 2 study of two doses of CT1812 in adults with mild to moderate Alzheimer's Disease (AD).

This Phase 2 study is designed to evaluate the safety of two doses of CT1812 administered once daily for 6 months in adults aged 50 to 85 who have been diagnosed with mild to moderate Alzheimer's disease. Randomized participants will receive 100 mg of CT1812, 300 mg of CT1812, or placebo once daily for 182 days. Exploratory endpoints that evaluate the effect of CT1812 on biomarkers are also included.

Being tested
CT1812, Placebo
Keywords
Alzheimer's Disease
Medical subject headings
Alzheimer Disease

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • CT1812Drug

    Also called Study Drug, zervimesine

    Active Study Drug

  • PlaceboDrug

    Also called Matching Placebo

    Non-active study drug

Study groups in NCT03507790
Study groupRoleWhat they receive
Active Treatment- CT1812 100 mgActive comparatorCT1812 at a dose of 100 mg
Receives: Drug: CT1812
Active Treatment- CT1812 300 mgActive comparatorCT1812 at a dose of 300mg
Receives: Drug: CT1812
Placebo Comparator - PlaceboPlacebo comparatorPlacebo
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Study Participants With at Least One Mild, Moderate, or Severe Treatment Emergent Adverse Events (TEAEs)

    Adverse events were captured from the start of study-related procedures at Visit 1 (including diagnostic assessments or signing of ICF) onward during the course of this study. Adverse events were coded using MedDRA Version 27.0.TEAEs are events that occurred or worsened on or after the first application of study drug. Participants are counted once for each system organ class (SOC) and once for each preferred term (PT).

    Measured: Up to 210 Days

  2. Number of Study Participants With at Least One Treatment Emergent Adverse Events (TEAs) and Serious Adverse Events (SAEs).

    Adverse events were captured from the start of study-related procedures at Visit 1 (including diagnostic assessments or signing of ICF) onward during the course of this study. Adverse events were coded using MedDRA Version 27.0.TEAEs are events that occurred or worsened on or after the first application of study drug. Participants are counted once for each system organ class (SOC) and once for each preferred term (PT).

    Measured: Up to 210 Days

Secondary outcomes (2)
  1. Change From Baseline in the Cerebrospinal Fluid (CSF) Biomarkers

    Change from baseline in CSF-Aβ, Tau, phospho-Tau, neurogranin, synaptotagmin, synaptosomal-associated protein-25 (SNAP25), neurofilament light chain (NfL), and Aβ-oligomers.Change from baseline is calculated as the observed value minus the baseline value.

    Measured: Baseline to Day 182

  2. Amyloid Beta 1-42/Amyloid Beta 1-40 (Aβ42/40) in the Cerebrospinal Fluid (CSF) Biomarkers

    Ratio of Amyloid Beta 1-42 (Aβ42) to Amyloid Beta 1-40 (Aβ40) Concentration from Baseline to Day 182.

    Measured: Baseline to Day 182

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted25 Apr 2018
  2. Study start10 Oct 2018
  3. Primary completion29 May 2024
  4. Study completion29 May 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
This is a multi-center Phase 2, randomized, double-blind, placebo-controlled, parallel-group study.
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
153 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03507790
Sponsor's protocol ID
COG0201
Other IDs
R01AG058660, 2022-002326-27
Status last verified
Aug 2025
First submitted
10 Apr 2018
Last updated
11 Aug 2025
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Di Caro V, Cho E, Thiel J, Lizama BN, Koel-Simmelink MJA, Pandey K, Duong D, Seyfried NT, Grundman M, Teunissen CE, Zetterberg H, Blennow K, Caggiano AO, Hamby ME. Impact of zervimesine on the neuroinflammatory biomarker GFAP and related proteomic molecular correlates in plasma of participants from a phase 2 clinical trial in Alzheimer's disease. Alzheimers Res Ther. 2026 Apr 6;18(1):112. doi: 10.1186/s13195-026-02025-4.

    PubMed 41943055
  • Vijverberg EGB, Scharre DW, Woodward M, Catalano S, Hamby ME, Grundman M, Morgan RE, Iaci J, Devins T, Caggiano AO. Randomized, double-blind study of zervimesine in mild to moderate Alzheimer's disease. J Alzheimers Dis. 2026 May;111(2):897-908. doi: 10.1177/13872877261437145. Epub 2026 Apr 3.

    PubMed 41930592
  • Lizama BN, Williams C, North HA, Pandey K, Duong D, Di Caro V, Mecca AP, Blennow K, Zetterberg H, Levey AI, Grundman M, van Dyck CH, Caggiano AO, Seyfried NT, Hamby ME. CT1812 biomarker signature from a meta-analysis of CSF proteomic findings from two Phase 2 clinical trials in Alzheimer's disease. Alzheimers Dement. 2024 Oct;20(10):6860-6880. doi: 10.1002/alz.14152. Epub 2024 Aug 21.

    PubMed 39166791
  • Lizama BN, North HA, Pandey K, Williams C, Duong D, Cho E, Di Caro V, Ping L, Blennow K, Zetterberg H, Lah J, Levey AI, Grundman M, Caggiano AO, Seyfried NT, Hamby ME. An interim exploratory proteomics biomarker analysis of a phase 2 clinical trial to assess the impact of CT1812 in Alzheimer's disease. Neurobiol Dis. 2024 Sep;199:106575. doi: 10.1016/j.nbd.2024.106575. Epub 2024 Jun 22.

    PubMed 38914170

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing CT1812 in people with Mild to Moderate Alzheimer's Disease, run by Cognition Therapeutics at 32 sites in 5 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 11 Aug 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 32 sites in United States, Czechia, Spain, Australia, Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 11 Aug 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Study Participants With at Least One Mild, Moderate, or Severe Treatment Emergent Adverse Events (TEAEs) (time frame: Up to 210 Days). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03507790, which also lists 4 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 Aug 2025.

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