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CompletedNCT05225415COG1201Updated Mar 12, 2026Results posted

Study to Evaluate the Safety, Tolerability and Efficacy of CT1812 in Subjects With Mild to Moderate Dementia With Lewy Bodies

A Phase 2 interventional study of CT1812 in Dementia With Lewy Bodies, sponsored by Cognition Therapeutics. Completed at 34 sites in United States. Open to participants aged 50 Years to 85 Years. Per ClinicalTrials.gov, last updated 2026-03-12.

Sponsored by Cognition Therapeutics · Phase 2, Interventional, and Treatment

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Phase
Phase 2
Study type
Interventional
Enrollment
130
Allocation
Randomized
Ages
50 Years to 85 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 110 studies in Lewy Body Disease with a site in United States — 32 open to participants now, 40 under way, 1 of them phase 3. Lewy Body Disease · United States.

Enrollment
29th of 78
130 · median 86
Started
2022
with 8 others
Phase 2
21 of 110
4 open now
Registered
70th of 110
by date

Among the 110 studies in Lewy Body Disease with a site in United States, this one is the 29th largest by enrollment of the 78 interventional ones that give a count, is one of 9 that started in 2022, is one of 21 in phase 2, and was the 70th registered.

Lewy Body Disease

239 studies on the registry are indexed under Lewy Body Disease; 88 are open to participants now.

Browse Lewy Body Disease studies →

Open to participants now

32 of the 110 studies in Lewy Body Disease with a site in United States are open now. Recruiting first, the newest first:

27 more — sign in →

All 32 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 63 Lewy Body Disease studies recruiting now, 41 (65%) set no upper age limit and none (0%) stop at 75 or younger; 10 take children under 18; 31 take healthy volunteers.

This study: 50 Years to 85 Years · all sexes · no healthy volunteers.

The full table on the hub →

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02

Study summary

Multi-center, randomized, double-blind, placebo-controlled, 6- month study in subjects with mild to moderate Dementia with Lewy Bodies.

Read the detailed description

The safety and efficacy of CT1812 at doses of 300 and 100mg will be evaluated over a 24 week double-blind treatment period in patient diagnosed with dementia with Lewy bodies.

Patients will be randomized 1:1:1 to placebo, 100mg CT1812 or 300mg CT1812. Oral CT1812 will be taken daily. Subjects meeting eligibility requirement and signing informed consent will be assessed by repeated psychometric/neurologic testing, safety procedures and PK and PD sample collection at defined intervals throughout the study. Plasma and CSF biomarkers will also be followed.

03

Conditions studied

  • Dementia With Lewy Bodies

Keywords

  • Dementia
04

Who can participate

Ages eligible
50 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Men or women 50-85 years of age (inclusive), meeting criteria for probable Dementia with Lewy Bodies (DLB).
  • MRI, or CT scan due to of MRI if approved by medical monitor) obtained during screening consistent with the clinical diagnosis of DLB and without findings of significant exclusionary abnormalities. An historical MRI (or CT scan), up to 1 year prior to screening, may be used if 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.
  • 18-27 inclusive

Exclusion criteria

Exclusion Criteria:

  • Any neurological condition that may be contributing to cognitive impairment above and beyond those caused by the subject's DLB, including any co-morbidities detected by clinical assessment or MRI (or CT scan due to of MRI, if approved by medical monitor)
  • Screening MRI (or historical MRI or CT scan due to contraindication of MRI if approved by medical monitor) or historical MRI/CT scan, 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, laboratory findings or medical history consistent with:

    1. Other primary degenerative dementia (fronto-temporal dementia, Huntington's disease, Creutzfeldt-Jakob Disease, Down syndrome, etc.).
    2. Other neurodegenerative condition (amyotrophic lateral sclerosis, etc.).
    3. Seizure disorder.
    4. Other infectious, metabolic or systemic diseases affecting the central nervous system (syphilis, present hypothyroidism, present vitamin B12 or folate deficiency, other laboratory values etc.).
  • Any major psychiatric diagnosis, including schizophrenia, bipolar disorder, and current major depressive disorder as per Fifth Edition
  • , advanced or unstable disease that may interfere with outcome evaluations.
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

MMSE and MoCA

Short tests of memory and thinking, each scored out of 30. Lower scores suggest more difficulty; criteria give a range, either to include people with memory problems or to leave them out.

DSM diagnostic criteria

The American Psychiatric Association’s manual of mental health diagnoses. DSM-5 (2013, revised as DSM-5-TR in 2022) replaced DSM-IV, and some studies still name the older edition. “Meets DSM criteria for …” means diagnosed by that edition’s diagnostic criteria, usually by a clinician in an interview.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
130 participants (actual)

Study arms

  • Active comparator
    CT1812 300 mg

    CT1812 300 mg

    Drug: CT1812

  • Active comparator
    CT1812 100 mg

    CT1812 100 mg

    Drug: CT1812

  • Placebo comparator
    Placebo

    Placebo

    Drug: CT1812

Interventions

  • DrugCT1812

    Orally administered CT1812

06

What researchers measure

Primary outcomes

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

    All adverse events (AE) summaries were restricted to TEAEs, which were defined as those AEs that occurred on or after the date of first dose and those existing AEs that worsened during the study. If it could not be determined whether the AE was treatment-emergent due to a partial onset date, then it was counted as such. Verbatim terms were mapped to System Organ Class (SOC) and preferred terms using MedDRA version 24.1.

    Time frame: Up to 210 Days

Secondary outcomes

  1. Montreal Cognitive Assessment Scale (MoCA)

    MOCA is a dementia screening assessment with a 0-30 range with lower scores meaning more impairment

    Time frame: Baseline, Day 28, Day 98, and Day 182

  2. Epworth Sleepiness Scale (ESS)

    The ESS is an assessment of subjective sleepiness over the prior two weeks. The scale is on 4 point scale (0 = no chance of dozing; 1 = slight chance of dozing; 2 = moderate chance of dozing; 3 = high chance of dozing) Total score sums up all sub-scores and can range from 0 to 24. A higher score is associated with increased sleepiness. An ESS score ≥10 is considered abnormal and consistent with excessive daytime sleepiness An ESS score \> 10 is considered consistent with excessive daytime sleepiness

    Time frame: Baseline, Day 28, Day 98, and Day 182

  3. Clinician Assessment of Fluctuation (CAF)

    Assessment of cognitive fluctuations, with range of 1-16, with higher scores representing more severe fluctuations

    Time frame: Baseline, Day 28, Day 98, and Day 182

  4. Alzheimer's Disease Cooperative Study - Clinical Global Impression of Change (ADCS-CGIC)

    The ADCS-CGIC is a 7-point scale similar to other global change scales, where a higher score indicates marked improvement. The 7 responses and corresponding numeric scores for each response of the ADCS-CGIC are: Marked improvement (1), Moderate improvement (2), Minimal improvement (3), No change (4), Minimal worsening (5), Moderate worsening (6), Marked worsening (7). The observed scores at each visit were summarized. A responder was defined as a participant who responded as "Marked improvement, Moderate improvement, Minimal improvement, No change" and non-responder was defined as a participant who responded as "Minimal worsening, Moderate worsening, Marked worsening."

    Time frame: Day 28, Day 98, and Day 182

  5. ADCS - Activities of Daily Living (ADCS-ADL)

    Assessment of functional impairment in activities of daily living. The total score range is from 0-78 with lower scores indicating greater functional impairment.

    Time frame: Baseline, Day 28, Day 98, and Day 182

  6. Movement Disorder Society - United Parkinson's Disease Rating Scale Part III (MDS-UPDRS Part III)

    This exam covers 18 motor signs associated with parkinsonism covering bradykinesia, rigidity, tremor, and gait with a range of scores from 0-136, with higher scores supporting more severe symptoms. A score of 6 or greater suggest the presence of parkinsonism

    Time frame: Baseline, Day 28, Day 98, and Day 182

  7. Change From Baseline in the Power of Attention Composite Score of the Cognitive Drug Research (CDR) System Battery

    The CDR tests are designed to evaluate the effects of novel compounds on the quality of cognitive functioning which includes tests of attention (simple and choice reaction time, digit vigilance), working memory (spatial and numeric) and episodic memory (word recognition, picture recognition).Power of Attention is a composite score derived from the CDR that measures the intensity of concentration (i.e., the ability to focus attention). Faster responses indicate that greater cognitive processing resources are being applied to the task. Power of Attention is calculated as the sum of three cognitive function speed tests: simple reaction time, choice reaction time, and digit vigilance. Scores range from 450 milliseconds (msec) to 61,500 msec. Lower scores reflect faster reaction times and greater intensity of concentration. An increase from baseline, resulting in higher values, indicates worsening compared to the baseline assessment.

    Time frame: Baseline and Day 182

  8. Neuropsychiatric Inventory (NPI-12) - Domain: Total Score A-L (Frequency x Severity)

    The Neuropsychiatric Inventory (NPI) was used to assess common neuropsychiatric symptoms associated with dementia. A structured caregiver interview was conducted to evaluate 12 behavioral domains, including delusions, hallucinations, dysphoria, euphoria, anxiety, agitation/aggression, apathy, irritability/lability, disinhibition, aberrant motor behavior, sleep disturbances, and appetite/eating disorders. Symptom frequency was rated on a 4-point scale (1 = occasionally, 2 = often, 3 = frequently, 4 = very frequently), and symptom severity was rated on a 3-point scale (1 = mild, 2 = moderate, 3 = marked). Domain scores were calculated as the product of frequency and severity ratings. The total NPI score was calculated as the sum of all domain scores and ranges from 0 to 144 (12 domains, each with a maximum score of 12). Increases from baseline (higher scores) indicate worsening of symptoms.

    Time frame: Baseline, Day 28, Day 98, Day 182

07

Results

Posted Mar 12, 2026

Participant flow

Thirty-one sites were selected in the United States: Arizona (2), California (2), Colorado (2), Connecticut (1), Florida (6), Illinois (1), Indiana (1), Kansas (1), Kentucky (1), Massachusetts (1), Minnesota (1), New York (1), North Carolina (1), Ohio (2), Oregon (2), Pennsylvania (1), Texas (1), Virginia (2), and Washington (2).

Participant flow — Overall Study
MilestoneCT1812 100 mgCT1812 300 mgPlacebo
Started444442
Completed403336
Not completed4116
Withdrew: Adverse event492
Withdrew: Physician decision001
Withdrew: Withdrawal by subject022
Withdrew: Withdrawal by caregiver001

Outcome measures

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

All adverse events (AE) summaries were restricted to TEAEs, which were defined as those AEs that occurred on or after the date of first dose and those existing AEs that worsened during the study. If it could not be determined whether the AE was treatment-emergent due to a partial onset date, then it was counted as such. Verbatim terms were mapped to System Organ Class (SOC) and preferred terms using MedDRA version 24.1.

Time frame:
Up to 210 Days
Reported as:
Number · participants
Number of Study Participants With at Least One Mild, Moderate, or Severe Treatment Emergent Adverse Events (TEAEs)
participantsCT1812 100 mgCT1812 300 mgPlacebo
Any Treatment Emergent Adverse Events (TEAE)424037
Any TEAEs related to investigational product (IP)142116
Any serious TEAEs458
Any serious TEAEs related to IP010
Any TEAEs with outcome of death021
Any severe TEAEs145
Any severe TEAEs related to IP010
Any TEAEs leading to discontinuation of IP495
Any TEAEs related to IP leading to discontinuation of IP272
Any TEAEs leading to discontinuation of study492
Any TEAEs related to IP leading to discontinuation of study270
SecondaryMontreal Cognitive Assessment Scale (MoCA)

MOCA is a dementia screening assessment with a 0-30 range with lower scores meaning more impairment

Time frame:
Baseline, Day 28, Day 98, and Day 182
Reported as:
Mean · score on a scale
Montreal Cognitive Assessment Scale (MoCA)
score on a scaleCT1812 100 mgCT1812 300 mgPlacebo
Baseline19.5 ± 4.3417.8 ± 5.4217.9 ± 4.62
Day 2819.4 ± 4.4218.0 ± 5.3318.2 ± 4.11
Day 9819.4 ± 5.0617.2 ± 6.0618.4 ± 4.14
Day18219.3 ± 5.3717.4 ± 5.8917.6 ± 5.24
SecondaryEpworth Sleepiness Scale (ESS)

The ESS is an assessment of subjective sleepiness over the prior two weeks. The scale is on 4 point scale (0 = no chance of dozing; 1 = slight chance of dozing; 2 = moderate chance of dozing; 3 = high chance of dozing) Total score sums up all sub-scores and can range from 0 to 24. A higher score is associated with increased sleepiness. An ESS score ≥10 is considered abnormal and consistent with excessive daytime sleepiness An ESS score \> 10 is considered consistent with excessive daytime sleepiness

Time frame:
Baseline, Day 28, Day 98, and Day 182
Reported as:
Mean · score on a scale
Epworth Sleepiness Scale (ESS)
score on a scaleCT1812 100 mgCT1812 300 mgPlacebo
Baseline7.9 ± 4.059.2 ± 4.408.2 ± 5.24
Day 287.3 ± 4.609.6 ± 4.698.8 ± 4.97
Day 987.6 ± 4.4710.1 ± 5.388.3 ± 5.88
Day 1828.8 ± 4.5810.0 ± 4.938.6 ± 5.40
SecondaryClinician Assessment of Fluctuation (CAF)

Assessment of cognitive fluctuations, with range of 1-16, with higher scores representing more severe fluctuations

Time frame:
Baseline, Day 28, Day 98, and Day 182
Reported as:
Mean · score on a scale
Clinician Assessment of Fluctuation (CAF)
score on a scaleCT1812 100 mgCT1812 300 mgPlacebo
Baseline4.8 ± 3.755.9 ± 3.434.2 ± 3.41
Day 284.3 ± 3.884.1 ± 3.484.9 ± 3.89
Day 984.0 ± 3.634.4 ± 3.894.6 ± 4.17
Day 1824.9 ± 3.685.0 ± 3.955.7 ± 4.77
SecondaryAlzheimer's Disease Cooperative Study - Clinical Global Impression of Change (ADCS-CGIC)

The ADCS-CGIC is a 7-point scale similar to other global change scales, where a higher score indicates marked improvement. The 7 responses and corresponding numeric scores for each response of the ADCS-CGIC are: Marked improvement (1), Moderate improvement (2), Minimal improvement (3), No change (4), Minimal worsening (5), Moderate worsening (6), Marked worsening (7). The observed scores at each visit were summarized. A responder was defined as a participant who responded as "Marked improvement, Moderate improvement, Minimal improvement, No change" and non-responder was defined as a participant who responded as "Minimal worsening, Moderate worsening, Marked worsening."

Time frame:
Day 28, Day 98, and Day 182
Reported as:
Number · participants
Alzheimer's Disease Cooperative Study - Clinical Global Impression of Change (ADCS-CGIC)
participantsCT1812 100 mgCT1812 300 mgPlacebo
Marked improvement - Clinical Impression at Day 28 Subjects with a non-missing response000
Moderate improvement - Clinical Impression at Day 28 Subjects with a non-missing response020
Minimal improvement -Clinical Impression at Day 28 Subjects with a non-missing response897
No change - Clinical Impression at Day 28 Subjects with a non-missing response242219
Minimal worsening - Clinical Impression at Day 28 Subjects with a non-missing response101013
Moderate worsening - Clinical Impression at Day 28 Subjects with a non-missing response101
Marked worsening -Clinical Impression at Day 28 Subjects with a non-missing response000
Responders -Day 28323326
Non-Responders -Day 28111014
Marked improvement - Clinical Impression at Day 98 Subjects with a non-missing response001
Moderate improvement - Clinical Impression at Day 98 Subjects with a non-missing response301
Minimal improvement -Clinical Impression at Day 98 Subjects with a non-missing response6103
No change - Clinical Impression at Day 98 Subjects with a non-missing response8911
Minimal worsening - Clinical Impression at Day 98 Subjects with a non-missing response171514
Moderate worsening - Clinical Impression at Day 98 Subjects with a non-missing response536
Marked worsening -Clinical Impression at Day 98 Subjects with a non-missing response000
Responders - Day 98171916
Non-Responders - Day 98221820
Marked improvement - Clinical Impression at Day 182 Subjects with a non-missing response000
Moderate improvement- Clinical Impression at Day 182 Subjects with a non-missing response211
Minimal improvement- Clinical Impression at Day 182 Subjects with a non-missing response724
No Change- Clinical Impression at Day 182 Subjects with a non-missing response7105
Minimal worsening -Clinical Impression at Day 182 Subjects with a non-missing response131516
Moderate worsening - Clinical Impression at Day 182 Subjects with a non-missing response9610
Marked worsening - Clinical Impression at Day 182 Subjects with a non-missing response101
Responders - Day 182161310
Non-Responders - Day 182232127
SecondaryADCS - Activities of Daily Living (ADCS-ADL)

Assessment of functional impairment in activities of daily living. The total score range is from 0-78 with lower scores indicating greater functional impairment.

Time frame:
Baseline, Day 28, Day 98, and Day 182
Reported as:
Mean · score on a scale
ADCS - Activities of Daily Living (ADCS-ADL)
score on a scaleCT1812 100 mgCT1812 300 mgPlacebo
Baseline62.7 ± 10.3360.7 ± 12.8563.3 ± 9.77
Day 2862.8 ± 9.9961.2 ± 12.6462.0 ± 9.39
Day 9861.8 ± 10.8359.0 ± 14.7560.5 ± 11.85
Day 18259.0 ± 12.4658.2 ± 16.2054.9 ± 18.19
SecondaryMovement Disorder Society - United Parkinson's Disease Rating Scale Part III (MDS-UPDRS Part III)

This exam covers 18 motor signs associated with parkinsonism covering bradykinesia, rigidity, tremor, and gait with a range of scores from 0-136, with higher scores supporting more severe symptoms. A score of 6 or greater suggest the presence of parkinsonism

Time frame:
Baseline, Day 28, Day 98, and Day 182
Reported as:
Mean · score on a scale
Movement Disorder Society - United Parkinson's Disease Rating Scale Part III (MDS-UPDRS Part III)
score on a scaleCT1812 100 mgCT1812 300 mgPlacebo
Baseline29.2 ± 13.9325.4 ± 12.9528.1 ± 13.41
Day 2828.7 ± 13.6623.3 ± 12.6328.7 ± 14.20
Day 9829.3 ± 14.9828.2 ± 14.1530.8 ± 15.91
Day 18230.8 ± 13.9028.9 ± 15.3133.8 ± 17.56
SecondaryChange From Baseline in the Power of Attention Composite Score of the Cognitive Drug Research (CDR) System Battery

The CDR tests are designed to evaluate the effects of novel compounds on the quality of cognitive functioning which includes tests of attention (simple and choice reaction time, digit vigilance), working memory (spatial and numeric) and episodic memory (word recognition, picture recognition).Power of Attention is a composite score derived from the CDR that measures the intensity of concentration (i.e., the ability to focus attention). Faster responses indicate that greater cognitive processing resources are being applied to the task. Power of Attention is calculated as the sum of three cognitive function speed tests: simple reaction time, choice reaction time, and digit vigilance. Scores range from 450 milliseconds (msec) to 61,500 msec. Lower scores reflect faster reaction times and greater intensity of concentration. An increase from baseline, resulting in higher values, indicates worsening compared to the baseline assessment.

Time frame:
Baseline and Day 182
Reported as:
Geometric least squares mean · msec
Change From Baseline in the Power of Attention Composite Score of the Cognitive Drug Research (CDR) System Battery
msecCT1812 100 mgCT1812 300 mgPlacebo
Change From Baseline in the Power of Attention Composite Score of the Cognitive Drug Research (CDR) System Battery119.89 ± 151.803620.82 ± 157.701279.62 ± 156.318
SecondaryNeuropsychiatric Inventory (NPI-12) - Domain: Total Score A-L (Frequency x Severity)

The Neuropsychiatric Inventory (NPI) was used to assess common neuropsychiatric symptoms associated with dementia. A structured caregiver interview was conducted to evaluate 12 behavioral domains, including delusions, hallucinations, dysphoria, euphoria, anxiety, agitation/aggression, apathy, irritability/lability, disinhibition, aberrant motor behavior, sleep disturbances, and appetite/eating disorders. Symptom frequency was rated on a 4-point scale (1 = occasionally, 2 = often, 3 = frequently, 4 = very frequently), and symptom severity was rated on a 3-point scale (1 = mild, 2 = moderate, 3 = marked). Domain scores were calculated as the product of frequency and severity ratings. The total NPI score was calculated as the sum of all domain scores and ranges from 0 to 144 (12 domains, each with a maximum score of 12). Increases from baseline (higher scores) indicate worsening of symptoms.

Time frame:
Baseline, Day 28, Day 98, Day 182
Reported as:
Mean · score on a scale
Neuropsychiatric Inventory (NPI-12) - Domain: Total Score A-L (Frequency x Severity)
score on a scaleCT1812 100 mgCT1812 300 mgPlacebo
Baseline -NPI Total Score A-L (Frequency x Severity)12.0 ± 11.7213.8 ± 12.3310.0 ± 11.03
Day 28 -NPI Total Score A-L (Frequency x Severity)9.8 ± 9.8210.5 ± 11.677.9 ± 9.19
Day 98 - NPI Total Score A-L (Frequency x Severity)10.4 ± 9.7611.4 ± 13.0210.6 ± 12.63
Day 182 -NPI Total Score A-L (Frequency x Severity)12.5 ± 13.8413.0 ± 13.1915.8 ± 18.03

Adverse events

Collected over Up to 210 Days. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
CT1812 100 mg0/44 (0%)4/44 (9.1%)42/44 (95.5%)
CT1812 300 mg2/43 (4.7%)5/43 (11.6%)40/43 (93%)
Placebo1/42 (2.4%)8/42 (19%)37/42 (88.1%)
Most frequent serious events
Showing 10 of 25
Most frequent serious events
EventCT1812 100 mgCT1812 300 mgPlacebo
COVID-19 pneumoniaInfections and infestations0/440/431/42
CellulitisInfections and infestations0/440/431/42
Klebsiella sepsisInfections and infestations0/440/431/42
FallInjury, poisoning and procedural complications0/440/431/42
Periprosthetic fractureInjury, poisoning and procedural complications0/440/431/42
Scapula fractureInjury, poisoning and procedural complications0/440/431/42
Cauda equina syndromeNervous system disorders0/440/431/42
EncephalopathyNervous system disorders0/440/431/42
HeadacheNervous system disorders0/440/431/42
SyncopeNervous system disorders0/440/431/42
Most frequent other events
Showing 10 of 13
Most frequent other events
EventCT1812 100 mgCT1812 300 mgPlacebo
FallInjury, poisoning and procedural complications7/4414/4310/42
HeadacheNervous system disorders4/447/438/42
Urinary tract infectionInfections and infestations3/443/438/42
Lipase increasedEndocrine disorders5/447/436/42
Alanine aminotransferase increasedMetabolism and nutrition disorders3/447/430/42
DizzinessNervous system disorders3/444/435/42
DiarrheaGastrointestinal disorders4/445/432/42
COVID-19Infections and infestations3/445/433/42
Aspartate aminotransferase increasedMetabolism and nutrition disorders4/445/430/42
Confusional statePsychiatric disorders1/445/433/42

Baseline characteristics

The intent-to-treat (ITT) population included all participants that were randomly assigned to study drug.

Age, Continuous
Age, Continuous(years)CT1812 100 mgCT1812 300 mgPlaceboTotal
Mean72.6 ± 7.8272.1 ± 5.9073.7 ± 6.2572.8 ± 6.69
Sex: Female, Male
Sex: Female, Male(Participants)CT1812 100 mgCT1812 300 mgPlaceboTotal
Female353833106
Male96924
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)CT1812 100 mgCT1812 300 mgPlaceboTotal
Hispanic or Latino0000
Not Hispanic or Latino434439126
Unknown or Not Reported1034
Race (NIH/OMB)
Race (NIH/OMB)(Participants)CT1812 100 mgCT1812 300 mgPlaceboTotal
American Indian or Alaska Native0000
Asian0303
Native Hawaiian or Other Pacific Islander0000
Black or African American1012
White423938119
More than one race0000
Unknown or Not Reported1236
BMI
BMI(kg/m^2)CT1812 100 mgCT1812 300 mgPlaceboTotal
Mean26.5 ± 4.4926.8 ± 3.4126.4 ± 4.4426.6 ± 4.12
08

Study locations

34 sites
  • Barrow Neurological Institute
    Phoenix, Arizona 85013, United States
  • Banner Sun Health Research Institute
    Sun City, Arizona 85351, United States
  • University of Arizona - Health Sciences Center
    Tucson, Arizona 85724, United States
  • Stanford University
    Palo Alto, California 94304, United States
  • Pacific Neuroscience Institute
    Santa Monica, California 90404, United States
  • University of Colorado
    Aurora, Colorado 80045, United States
  • CenExel Rocky Mountain Clinical Research, LLC
    Englewood, Colorado 80113, United States
  • New England Institute for Neurology and Headache (NEINH)
    Stamford, Connecticut 06905, United States
  • JEM Research Institute
    Atlantis, Florida 33462, United States
  • University of Miami Miller School of Medicine Comprehensive Center for Brain Health
    Boca Raton, Florida 33433, United States
  • Parkinson's Disease and Movement Disorders Center of Boca Raton
    Boca Raton, Florida 33486, United States
  • Charter Research
    Lady Lake, Florida 32156, United States
  • Renstar Medical Research
    Ocala, Florida 34770, United States
  • Charter Research
    Winter Park, Florida 32792, United States
  • Rush University Medical Center Section of Parkinson Disease and Movement Disorder
    Chicago, Illinois 60612, United States
  • IU Health Neuroscience Center, Goodman Hall
    Indianapolis, Indiana 46202, United States
  • Josephson Wallack Munshower Neurology, P.C
    Indianapolis, Indiana 46256, United States
  • The University of Kansas Alzheimer's Disease Research Center
    Fairway, Kansas 66205, United States
  • University of Kentucky
    Lexington, Kentucky 40504, United States
  • Headlands Research Eastern Massachusetts, LLC
    Plymouth, Massachusetts 02360, United States
  • Mayo Clinic
    Rochester, Minnesota 55905, United States
  • Columbia University
    New York, New York 10032, United States
  • UNC Department of Neurology
    Chapel Hill, North Carolina 27599, United States
  • Cleveland Clinic Main Campus
    Cleveland, Ohio 44195, United States
  • Ohio State University
    Columbus, Ohio 43210, United States
  • Summit Headlands, LLC
    Portland, Oregon 97210, United States
  • Oregon Health and Science University
    Portland, Oregon 97239, United States
  • University of Pennsylvania
    Philadelphia, Pennsylvania 19107, United States
  • University of Texas Southwestern
    Dallas, Texas 75390, United States
  • Clinical Trial Network
    Houston, Texas 77074, United States
  • University of Virginia Adult Neurology
    Charlottesville, Virginia 22903, United States
  • Virginia Commonwealth University
    Richmond, Virginia 23298, United States
  • Evergreen Health Research
    Kirkland, Washington 98034, United States
  • Universtiy of Washington Department of Neurology
    Seattle, Washington 98104, United States
09

References and documents

Publications

  • Galvin JE, Tolea MI, Scharre DW, Hamby ME, Iaci JF, Grundman M, Caggiano AO. Phase 2 study of zervimesine (CT1812) in participants with mild-to-moderate dementia with Lewy bodies (DLB). Alzheimers Dement. 2025 Dec;21(12):e71004. doi: 10.1002/alz.71004. PubMed 41416579 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from May 2022 to primary completion in Nov 2024, 30 months.

Results were first posted in Mar 2026, 1 year 3 months after primary completion.

Of 24 phase 2 interventional studies under Lewy Body Disease, half reached primary completion within 26 months of starting (the median), counting those still running; a quarter within 16 and three quarters within 45. This study's 30 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
Jan 11, 2022
First posted
Feb 4, 2022
StartActual
May 19, 2022
Primary completionActual
Nov 25, 2024
CompletionActual
Nov 25, 2024
Results first posted
Mar 12, 2026
Last update
Mar 12, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 12, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT05225415
Lead sponsor
Cognition Therapeutics
Responsible party
Sponsor
First posted
Feb 4, 2022
Start date
May 19, 2022
Primary completion
Nov 25, 2024
Completion
Nov 25, 2024
Results posted
Mar 12, 2026
Last update
Mar 12, 2026

Study contacts

Anthony Caggiano, MD
study director · Cognition Therapeutics Inc.

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Zervimesine

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