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Alzheimer DiseasePhase 2/3NCT03823404

GAIN Trial: Phase 2/3 Study of COR388 in Subjects With Alzheimer's Disease

A Phase 2/3 study testing COR388 capsule in people with Alzheimer Disease, run by Cortexyme Inc. at 93 sites in 6 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 randomized, double-blind, placebo-controlled study that assessed the efficacy, safety, and tolerability of 2 dose levels of COR388 in subjects with a clinical diagnosis of mild to moderate Alzheimer's disease (AD) dementia. Read more about this study

Who is it for?
Ages 55 to 80 years
Conditions the study is for
Alzheimer Disease
What is being tested?
COR388 capsule
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
643 participants
Where
93 sitesin 6 countries
Study dates
28 Mar 2019to 1 Jan 2022
Phase
Phase 2/3
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 55 to 80 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Subject has probable AD dementia according to the NIA-AA criteria.
  • Subject has an Mini-Mental State Examination (MMSE) score 12 and 24 inclusive at both screening and Visit 2 and a ≤3-point difference between these visits.
  • Subject has brain MRI scan consistent with the diagnosis of AD performed during the screening period. Computed Tomography scan can be used only if the subject has an absolute contraindication for MRI.
  • Subject has a Modified Hachinski score ≤4 at screening.
  • Subjects with background symptomatic therapy with acetylcholine esterase inhibitors, and/or memantine, are allowed as long as the dose has been stable for 90 days prior to screening and no changes are planned during the study.
  • Subject has a primary caregiver willing to accept responsibility for supervising the treatment (e.g., administering study drug) and assessing the condition of the subject throughout the study in accordance with all protocol requirements.
  • Subject has body mass index <38 kg/m2 at Screening

Who cannot join

  • Subject has imaging consistent with a dementia diagnosis other than AD.
  • Subject has had an increase or restoration of cognition based on medical history.
  • Subject with history or current evidence of major psychiatric illness such as schizophrenia, bipolar disorder, or major depressive disorder that may interfere with the patient's ability to perform the study and all assessments. Note: Mild depression or depressive mood arising in the context of AD are not criteria for exclusion. The use of anti-depressants or the use of anti epileptic medication for non seizure-related treatment is allowed if the dose has remained stable for at least 60 days prior to enrollment.
  • Subject has any of the following laboratory findings at screening:
  • Alanine aminotransferase >3 x upper limit of normal (ULN), aspartate aminotransferase >3 x ULN, or history of clinically significant liver disease in the Investigator's judgment.
  • Hemoglobin ≤10 g/dl.
Show all 9Show fewer
  • Creatinine clearance (CL) of <45 ml/min.
  • Poorly controlled diabetes as defined by hemoglobin A1C (HbA1C) >8.
  • Positive blood screen for Human Immunodeficiency Virus (HIV 1 and 2), Hepatitis B surface antigen (HBsAg), or Hepatitis C virus antibodies (HCV-Ab) at Screening.

Trial locations and contacts

93 sites in 6 countries.

93 sites in 6 countries

United States58 sites
  • Disease Research & Neurology Center of Neurological Associates of Albany

    Albany, New York, 12208

  • Albuquerque Neuroscience

    Albuquerque, New Mexico, 87109

  • JEM Research Institute

    Atlantis, Florida, 33462

  • Senior Adults Specialty Research

    Austin, Texas, 78757

  • Insight Clinical Trials, LLC

    Beachwood, Ohio, 44122

  • Northwest Clinical Research Center

    Bellevue, Washington, 98007

  • Northwest Clinical Trials

    Boise, Idaho, 83704

  • Integrative Clinical Trials LLC

    Brooklyn, New York, 11229

  • Spri Clinicaltrials, Llc

    Brooklyn, New York, 11235

  • ANI Neurology, PLLC dba Alzheimer's Memory Center

    Charlotte, North Carolina, 28270

  • University of Virginia Adult Neurology

    Charlottesville, Virginia, 22903

  • Columus Memory Center

    Columbus, Georgia, 31909

  • ATP Clinical Research, Inc.

    Costa Mesa, California, 92626

  • Kerwin Research Center

    Dallas, Texas, 75231

  • Neurology Consultants of Dallas

    Dallas, Texas, 75243

  • Neurology Diagnostics Inc.

    Dayton, Ohio, 45459

  • NeuroStudies.net, LLC

    Decatur, Georgia, 30033

  • Brain Matters Research

    Delray Beach, Florida, 33445

  • Alexian Brothers Neurosciences Research

    Elk Grove Village, Illinois, 60007

  • Recognition Health

    Fairfax, Virginia, 22031

  • Neuropsychiatric Research Center of Southwest Florida

    Fort Myers, Florida, 33912

  • MD Clinical

    Hallandale, Florida, 33009

  • Memory Center

    Hattiesburg, Mississippi, 39401

  • Indago Research and Health Center, Inc.

    Hialeah, Florida, 33012

  • Houston Methodist Department of Neurology

    Houston, Texas, 77030

  • Clinical Trial Network

    Houston, Texas, 77074

  • Alzheimer's Research and Treatment Center

    Lake Worth, Florida, 33449

  • Cleveland Clinic Lou Ruvo Center for Brain Health

    Las Vegas, Nevada, 89106

  • Alliance Research

    Long Beach, California, 90807

  • Activmed Practices and Research

    Methuen, Massachusetts, 01844

  • Qtrials, Inc.

    Miami, Florida, 33144

  • Future Care Solutions, LLC

    Miami, Florida, 33165

  • Miami Dade Medical Research Institute

    Miami, Florida, 33176

  • Medical College of Wisconsin, Inc.

    Milwaukee, Wisconsin, 53226

  • Mid Hudson Medical Research

    New Windsor, New York, 12553

  • The Boston Center for Memory

    Newton, Massachusetts, 02459

  • Sensible Healthcare LLC

    Ocoee, Florida, 34761

  • Bioclinica Research

    Orlando, Florida, 32806

  • Standford University

    Palo Alto, California, 94305

  • Anchor Neuroscience

    Pensacola, Florida, 32502

  • Xenoscience, Inc.

    Phoenix, Arizona, 85004

  • Banner Alzheimer's Institute

    Phoenix, Arizona, 85006

  • Northeastern Pennsylvania Memory and Alzheimer's Center

    Plains, Pennsylvania, 18507

  • Memory Health Center at Summit Research Network

    Portland, Oregon, 97210

  • Princeton Medical Institute

    Princeton, New Jersey, 08540

  • Anil Nair MD, Alzheimer's Disease Center

    Quincy, Massachusetts, 02169

  • CITRIALS

    Riverside, California, 92506

  • CITRIALS

    Santa Ana, California, 92705

  • Syrentis Clinical Research

    Santa Ana, California, 92705

  • UW Alzheimer's Disease Research Center

    Seattle, Washington, 98104

  • Southern California Research LLC

    Simi Valley, California, 93065

  • The Cognitive Research Center of New Jersey

    Springfield, New Jersey, 07081

  • Suncoast Neuroscience Associates, Inc.

    St. Petersburg, Florida, 33713

  • Brain Matters Research at the Kane Center

    Stuart, Florida, 34997

  • Banner Sun Health

    Sun City, Arizona, 85351

  • Stedman Clinical Trials

    Tampa, Florida, 33613

  • Neurology Specialists of Monmouth County

    West Long Branch, New Jersey, 07764

  • Ascension Via Christi Research

    Wichita, Kansas, 67214

Other trials in United States

United Kingdom9 sites
  • St Pancras Clinical Research (private)

    Barbican, London, EC2Y 8EA

  • RICE - The Research Institute for the Care of Older People

    Bath, BA1 3NG

  • Cognition Health Birmingham (private)

    Edgbaston, Birmingham, B16 8LT

  • Glasgow Memory Clinic

    Glasgow, G20 0XA

  • Cognition Health Ltd. (private) Guildford

    Guildford, GU2 7YD

  • Cognition Health Ltd. (private) London

    London, W1G 9JF

  • Cognition Health Plymouth

    Plymouth, Science Park, PL5 8BT

  • Memory Assessment and Research Centre, Moorgreen Hospital

    Southampton, UK, SO30 3JB

  • Kingshill Research Centre Swindon

    Swindon, SN3 6BW

Other trials in United Kingdom

Spain8 sites
  • Hospital General de Alicante

    Alicante, 03010

  • Hospital de la Santa Creu i Sant Pau

    Barcelona, 8005

  • Fundacio Ace

    Barcelona, 8028

  • Hospital Clinic de Barcelona

    Barcelona, 8036

  • Hospital Universitario Ramón Y Cajal

    Madrid, 28034

  • Policlinica Gipuzkoa

    San Sebastián, Gipuzkoa, 20014

  • Hospital Universitari General de Catalunya

    Sant Cugat del Vallès, 8195

  • Hospital Universitario Marqués de Valdecilla

    Santander, 39008

Other trials in Spain

Poland7 sites
  • Indywidualna Specjalistyczna Praktyka Lekarska

    Gdansk, 80-438

  • NZOZ Wielospecjalistyczna Poradnia Lekarska SYNAPSIS

    Katowice, 40-123

  • Krakowska Akademia Neurologii

    Krakow, 31-505

  • NEURO-CARE Sp. z o.o. Sp. Komandytowa

    Siemianowice Śląskie, 41-100

  • Euromedis Sp. z o.o.

    Szczecin, 70-111

  • Centrum Medyczne NeuroProtect

    Warsaw, 01-684

  • NZOZ Wrocławskie Centrum Alzheimerowskie

    Wroclaw, 53-659

Other trials in Poland

France6 sites
  • Centre de Ressources Biologiques

    Lille, 59037

  • University Hospital La Timone, Department of Neurology and Neuropsychology

    Marseille, 13385

  • Service de Gériatrie

    Nice, 6100

  • Hôpitaux Universitaires de Strasbourg, Centre d'Investigation Clinique, Hôpital Hautepierre

    Strasbourg, 67098

  • Hôpital de Brabois

    Toulouse, Cedex, 31059

  • CHRU de Nancy Hôpital de Brabois Service de Gériatrie

    Vandœuvre-lès-Nancy, 54500

Other trials in France

Netherlands5 sites
  • Brain Research Center Den Bosch B.V.

    's-Hertogenbosch, 5223 LA

  • Brain Research Center

    Amsterdam, 1081 GN

  • PreCare Trial & Recruitment

    Beek, 6191 JW

  • Isala Zwolle - Interne geneeskunde Centrum voor ouderengeneeskunde

    Zwolle, 8025 AB

  • Brain Research Center Zwolle

    Zwolle, 8025 AZ

Other trials in Netherlands

About this study

Official title: GAIN Trial: A Randomized, Double-Blind, Placebo-Controlled Study of COR388 in Subjects With Alzheimer's Disease

This is a randomized, double-blind, placebo-controlled study that assessed the efficacy, safety, and tolerability of 2 dose levels of COR388 in subjects with a clinical diagnosis of mild to moderate Alzheimer's disease (AD) dementia.

Read the detailed description

This was a randomized, double-blind, placebo-controlled study that assessed the efficacy, safety, and tolerability of 2 dose levels of COR388 oral capsules in subjects with probable Alzheimer's disease (AD) dementia according to the National Institute on Aging-Alzheimer's Association (NIA-AA) criteria. The subject did not have other conditions or brain imaging abnormalities that could explain the symptoms of dementia. All subjects were encouraged to have lumbar punctures (LPs) (during screening, week 24 and week 48) in the absence of medical conditions that could increase the risk of the procedure in the opinion of the Investigator. Cerebrospinal fluid (CSF), saliva, and blood were analyzed for measurements of biomarkers of AD and neuroinflammation, and for the presence of bacterial deoxyribonucleic acid (DNA) of Porphyromonas gingivalis (P. gingivalis). A subset of sites monitored subjects for clinical evidence of periodontitis at baseline, 24 and 48 weeks.

The study consisted of 3 phases: a screening phase of up to 6 weeks, a treatment phase of up to 48 weeks, and a safety follow-up phase of 6 weeks.

Being tested
COR388 capsule, Placebo capsule
Medical subject headings
Alzheimer Disease

What participants receive

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

  • COR388 capsuleDrug

    Also called atuzaginstat

    BID (twice daily)

  • Placebo capsuleDrug

    Also called atuzaginstat

    BID

Study groups in NCT03823404
Study groupRoleWhat they receive
COR388 80 mg twice daily (BID)ExperimentalCOR388 hydrochloric acid (HCl), 80 mg orally administered capsule, BID (twice daily) with water approximately 12 hours apart and no less than 6 hours apart
Receives: Drug: COR388 capsule
COR388 40 mg BIDExperimentalCOR388 HCl, 40 mg orally administered capsule, BID with water approximately 12 hours apart and no less than 6 hours apart
Receives: Drug: COR388 capsule
Placebo BIDPlacebo comparatorPlacebo orally administered capsule, BID with water approximately 12 hours apart and no less than 6 hours apart
Receives: Drug: Placebo capsule

What is being measured

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

  1. Alzheimer's Disease Assessment Scale-Cognitive Subscale 11 (ADAS-Cog 11)

    Alzheimer's Disease Assessment Scale-Cognitive Subscale 11 (ADAS-Cog 11) - Total Score The cognitive subscale of the ADAS (ADAS Cog11) was used as a primary efficacy measure and consists of 11 items assessing areas of function most typically impaired in Alzheimer's disease (AD): orientation, verbal memory, language, and praxis. he scale ranges from 0 to 70, with higher scores indicating greater disease severity.

    Measured: Baseline to Week 48

  2. Alzheimer's Disease Cooperative Study Group-Activities of Daily Living (ADCS-ADL)

    The Alzheimer's Disease Cooperative Study Activities of Daily Living (ADCS-ADL) Inventory Score is a 23-item inventory.

    The ADCS-ADL measures both basic and instrumental activities of daily living The total ADCS-ADL score ranges from 0 to 78, with lower scores indicating greater disease severity.

    Measured: Baseline to Week 48

Secondary outcomes (3)
  1. Clinical Dementia Rating-Sum of Boxes (CDR-SB)

    Clinical Dementia Rating-Sum of Boxes (CDR-SB) - Sum of Boxes CDR-SB is a semi-structured interview of participants and their caregivers. Participant's cognitive status is rated across 6 domains of functioning, including memory, orientation, judgment/problem solving, community affairs, home/hobbies, and personal care.

    Severity score assigned for each of 6 domains; total score (SB) ranges from 0 to 18. Higher scores indicate greater disease severity.

    Measured: Baseline to Week 48

  2. Mini-Mental State Examination (MMSE)

    Change in Mini-Mental State Examination (MMSE) - Total Score Minimum Score - 0 Maximum Score - 30 Higher score means better outcome

    Measured: Baseline to Week 48

  3. Neuropsychiatric Inventory (NPI)

    Neuropsychiatric Inventory (NPI) - Total Score NPI assesses psychopathology in participants with dementia and other neurologic disorders.

    Total score ranges from 12 to 144; higher scores indicate greater disease severity.

    Measured: Baseline to Week 48

Timeline

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

  1. First posted30 Jan 2019
  2. Study start28 Mar 2019
  3. Primary completion1 Jan 2022
  4. Study completion1 Jan 2022

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 2/3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
643 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03823404
Sponsor's protocol ID
COR388-010
Status last verified
Jan 2023
First submitted
24 Jan 2019
Last updated
23 Feb 2023
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 2/3 study testing COR388 capsule in people with Alzheimer Disease, run by Cortexyme Inc. at 93 sites in 6 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 7 inclusion and 9 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 23 Feb 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 93 sites in United States, United Kingdom, Spain, Poland, France and 1 more country. 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 combined 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.

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

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 23 Feb 2023). 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?

Alzheimer's Disease Assessment Scale-Cognitive Subscale 11 (ADAS-Cog 11) (time frame: Baseline to Week 48). 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?
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 23 Feb 2023.

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