A Trial to Evaluate the Safety and Efficacy of Benfotiamine in Patients With Early Alzheimer's Disease (BenfoTeam)

Last updated: October 17, 2025
Sponsor: Alzheimer's Disease Cooperative Study (ADCS)
Overall Status: Active - Recruiting

Phase

2

Condition

Memory Problems

Mild Cognitive Impairment

Mental Disability

Treatment

Placebo

High Dose Benfotiamine

Low Dose Benfotiamine

Clinical Study ID

NCT06223360
ADC-061-BENFO
1R01AG076634-01
  • Ages 50-89
  • All Genders

Study Summary

The purpose of this study is to learn more about the safety, effectiveness and tolerability of the study drug called Benfotiamine which may delay or slow the progression of the symptoms of early Alzheimer's disease.

Eligibility Criteria

Inclusion

Key Inclusion Criteria:

  • Aged 50 to 89 (inclusive) at screening

  • Mild Cognitive Impairment (MCI) due to AD or Mild dementia due to AD according toworkgroups of the Diagnostic Guidelines of the National Institute on Aging andAlzheimer's Association (NIA-AA)

  • Mini-Mental State Examination (MMSE) score 20-30 inclusive at screening-. MontrealCognitive Assessment score (MoCA) < 26 at screening

  • Clinical Dementia Rating (CDR) global score of 0.5 or 1 with memory score of greateror equal to 0.5 at screening

  • Positive plasma AD biomarker signature

  • Participants who are treated with FDA-approved acetylcholinesterase inhibitors (AchEI)and/or memantine will have to be on a stable dosage regimen for at least 3months prior to screening.

  • Participants must have a study partner who has frequent interaction with them (approximately >3-4 times per week), will be available for all clinic visits inperson or remotely, and can assist in compliance with study procedures.

  • Female participants must be post-menopausal for at least one year or surgicallysterile(bilateral tubal ligation, hysterectomy, or bilateral oophorectomy) for atleast 6 months prior to screening.

  • Fluent in English or Spanish to ensure compliance with cognitive testing and studyvisit procedures.

  • Ambulatory, or able to walk with an assistive device.

  • Provision of informed consent from the participant (or the participant's legallyauthorized representative (LAR) if unable to provide consent) and the study partner.

Exclusion

Key Exclusion Criteria:

  • Significant neurological disorder other than AD (e.g. hypoxia, stroke, traumaticbrain injury

  • Significant neurodegenerative diseases, other than AD, and causes of dementias,Parkinson's disease and Huntington's disease, vascular dementia, CJD (Creutzfeldt-Jakob disease), LBD (Lewy Body dementia), PSP (Progressive SupranuclearPalsy), AIDS (Acquired Immunodeficiency Syndrome), or NPH (normal pressurehydrocephalus).

  • Meeting Diagnostic Criteria for Possible AD according to workgroups of theDiagnostic Guidelines of the NIA-AA.

  • A current diagnosis of uncontrolled Type I or Type II diabetes mellitus, as definedby Hemoglobin A1C (Hb A1C ≥ 8).

  • A current active, uncontrolled seizure disorder.

  • Diagnosis of cancer, except for those participants who have undergone potentiallycurative therapy with no evidence of recurrence for > 5 years.

  • History of alcoholism or substance abuse, current or within past 5 years.

  • Previous exposure to Benfotiamine within past 3 months.

  • Contraindication to MRI.

  • Participation in another clinical trial for an investigational agent and havingtaken at least one dose of study drug, unless confirmed as having been on placebo,within 4 weeks prior to the baseline visit. The end of a previous investigationaltrial is defined as the date of the last dose of an investigational agent.

  • Initiation of a monoclonal antibody treatment targeting brain amyloid within 6months prior to the baseline visit.

  • A disability that may prevent the patient from completing all study requirementse.g.,blindness, deafness, severe language difficulty).

Study Design

Total Participants: 406
Treatment Group(s): 4
Primary Treatment: Placebo
Phase: 2
Study Start date:
March 28, 2024
Estimated Completion Date:
December 01, 2027

Study Description

This is a randomized, double-blind, placebo-controlled 18-month clinical trial of benfotiamine in early AD. This trial will include a seamless phase 2A-2B design with a randomized total sample of 406 participants. Participants who are randomized but drop out prior to study drug exposure will be replaced.

Phase 2A of the trial will randomize approximately 150 participants total, in a 1:1:1 to treatment with 1200 mg/day benfotiamine, 600 mg/day benfotiamine or placebo. The primary objective of phase 2A is to determine the highest safe and well tolerated dose of benfotiamine (600 mg or 1200 mg), as evaluated by the rate of tolerability events (TEs), for advancement to long-term 72 week exposure. The highest tolerated dose of benfotiamine will be carried forward from phase 2A to phase 2B.

At the start of phase 2B, all participants enrolled in the two phase 2A active dose arms will receive a new supply of benfotiamine at the selected phase 2B dose. All phase 2A participants will be included in the phase 2 intent-to-treat efficacy population, as assigned to active or placebo treatment. The primary objective of phase 2B is to assess efficacy of benfotiamine on global function and cognition over 72 weeks. In phase 2B, a composite cognitive and functional measure as well as PD biomarkers will be used to evaluate efficacy during the extended treatment period. Phase 2B will also evaluate longer-term safety and tolerability of benfotiamine treatment over 72 weeks.

Connect with a study center

  • St. Joseph's Hospital and Medical Center/Barrow Neurological Institute

    Phoenix, Arizona 85013
    United States

    Site Not Available

  • Banner Sun Health Research Institute

    Sun City, Arizona 85351
    United States

    Site Not Available

  • St. Joseph's Hospital and Medical Center/Barrow Neurological Institute

    Phoenix 5308655, Arizona 5551752 85013
    United States

    Active - Recruiting

  • Perseverance Research Center, LLC

    Scottsdale 5313457, Arizona 5551752 85253
    United States

    Active - Recruiting

  • Banner Sun Health Research Institute

    Sun City 5316201, Arizona 5551752 85351
    United States

    Active - Recruiting

  • The Neuron Clinic

    Chula Vista, California 91910
    United States

    Site Not Available

  • University of California, Irvine

    Irvine, California 92697
    United States

    Site Not Available

  • Pacific Research Network

    Lemon Grove, California 91945
    United States

    Site Not Available

  • Cedars Sinai, Los Angeles

    Los Angeles, California 90048
    United States

    Site Not Available

  • University of Southern California

    Los Angeles, California 90033
    United States

    Active - Recruiting

  • Syrentis Clinical Research

    Santa Ana, California 92705
    United States

    Site Not Available

  • The Neuron Clinic

    Chula Vista 5336899, California 5332921 91910
    United States

    Active - Recruiting

  • University of California, Irvine

    Irvine 5359777, California 5332921 92697
    United States

    Active - Recruiting

  • Pacific Research Network

    Lemon Grove 5365893, California 5332921 91945
    United States

    Terminated

  • Cedars Sinai, Los Angeles

    Los Angeles 5368361, California 5332921 90048
    United States

    Active - Recruiting

  • University of Southern California

    Los Angeles 5368361, California 5332921 90033
    United States

    Active - Recruiting

  • Syrentis Clinical Research

    Santa Ana 5392900, California 5332921 92705
    United States

    Active - Recruiting

  • JEM Research Institute

    Atlantis, Florida 33462
    United States

    Site Not Available

  • Brain Matters Research

    Delray Beach, Florida 33445
    United States

    Site Not Available

  • Neuropsychiatric Research Center of Southwest Florida

    Fort Myers, Florida 33912
    United States

    Site Not Available

  • Blue Medical Research Inc.

    Miami, Florida 33144
    United States

    Active - Recruiting

  • Brainstorm Research

    Miami, Florida 33176
    United States

    Site Not Available

  • CCM Clinical Research Group, LLC

    Miami, Florida 33133
    United States

    Active - Recruiting

  • Gonzalez MD & Aswad MD Health Services

    Miami, Florida 33135
    United States

    Active - Recruiting

  • Miami Jewish Health

    Miami, Florida 33137
    United States

    Active - Recruiting

  • Brain Matters Research (Kane Center)

    Stuart, Florida 34997
    United States

    Site Not Available

  • JEM Research Institute

    Atlantis 4146372, Florida 4155751 33462
    United States

    Active - Recruiting

  • Brain Matters Research

    Delray Beach 4153132, Florida 4155751 33445
    United States

    Active - Recruiting

  • Neuropsychiatric Research Center of Southwest Florida

    Fort Myers 4155995, Florida 4155751 33912
    United States

    Active - Recruiting

  • Blue Medical Research Inc.

    Miami 4164138, Florida 4155751 33144
    United States

    Active - Recruiting

  • Brainstorm Research

    Miami 4164138, Florida 4155751 33176
    United States

    Active - Recruiting

  • CCM Clinical Research Group, LLC

    Miami 4164138, Florida 4155751 33133
    United States

    Active - Recruiting

  • Gonzalez MD & Aswad MD Health Services

    Miami 4164138, Florida 4155751 33135
    United States

    Active - Recruiting

  • Miami Jewish Health

    Miami 4164138, Florida 4155751 33137
    United States

    Active - Recruiting

  • Brain Matters Research (Kane Center)

    Stuart 4174201, Florida 4155751 34997
    United States

    Active - Recruiting

  • Emory University Goizueta Alzheimer's Disease Research Center(GADRC)

    Atlanta, Georgia 30329
    United States

    Site Not Available

  • Emory University Goizueta Alzheimer's Disease Research Center(GADRC)

    Atlanta 4180439, Georgia 4197000 30329
    United States

    Active - Recruiting

  • Rush University Medical Center

    Chicago, Illinois 60612
    United States

    Site Not Available

  • Southern Illinois University

    Springfield, Illinois 62702
    United States

    Site Not Available

  • Rush University Medical Center

    Chicago 4887398, Illinois 4896861 60612
    United States

    Active - Recruiting

  • Southern Illinois University

    Springfield 4250542, Illinois 4896861 62702
    United States

    Active - Recruiting

  • University of Iowa

    Iowa City, Iowa 52242
    United States

    Site Not Available

  • University of Iowa

    Iowa City 4862034, Iowa 4862182 52242
    United States

    Active - Recruiting

  • University of Kentucky

    Lexington, Kentucky 40504
    United States

    Site Not Available

  • University of Kentucky

    Lexington 4297983, Kentucky 6254925 40504
    United States

    Active - Recruiting

  • MedVadis Research

    Waltham, Massachusetts 02451
    United States

    Site Not Available

  • MedVadis Research

    Waltham 4954380, Massachusetts 6254926 02451
    United States

    Active - Recruiting

  • University of Michigan, Ann Arbor

    Ann Arbor, Michigan 48109
    United States

    Site Not Available

  • University of Michigan, Ann Arbor

    Ann Arbor 4984247, Michigan 5001836 48109
    United States

    Active - Recruiting

  • Albany Medical College

    Albany, New York 12208
    United States

    Site Not Available

  • Dent Neurologic Institute

    Amherst, New York 14226
    United States

    Site Not Available

  • Integrative Clinical Trials

    Brooklyn, New York 11229
    United States

    Site Not Available

  • Columbia University Irving Medical Center

    New York, New York 10032
    United States

    Site Not Available

  • Mount Sinai School of Medicine

    New York, New York 10029
    United States

    Active - Recruiting

  • Nathan Kline Institute for Psychiatric Research

    New York, New York 10962
    United States

    Active - Recruiting

  • Weill Cornell Medical College

    New York, New York 10021
    United States

    Active - Recruiting

  • SUNY Upstate Medical University

    Syracuse, New York 13210
    United States

    Site Not Available

  • Albany Medical College

    Albany 5106834, New York 5128638 12208
    United States

    Active - Recruiting

  • Dent Neurologic Institute

    Amherst 5107129, New York 5128638 14226
    United States

    Active - Recruiting

  • Integrative Clinical Trials

    Brooklyn 5110302, New York 5128638 11229
    United States

    Active - Recruiting

  • Columbia University Irving Medical Center

    New York 5128581, New York 5128638 10032
    United States

    Active - Recruiting

  • Mount Sinai School of Medicine

    New York 5128581, New York 5128638 10029
    United States

    Active - Recruiting

  • Nathan Kline Institute for Psychiatric Research

    New York 5128581, New York 5128638 10962
    United States

    Active - Recruiting

  • Weill Cornell Medical College

    New York 5128581, New York 5128638 10021
    United States

    Active - Recruiting

  • SUNY Upstate Medical University

    Syracuse 5140405, New York 5128638 13210
    United States

    Active - Recruiting

  • Case Western Reserve University

    Cleveland, Ohio 44106
    United States

    Site Not Available

  • Ohio State University

    Columbus, Ohio 43221
    United States

    Site Not Available

  • Case Western Reserve University

    Cleveland 5150529, Ohio 5165418 44106
    United States

    Active - Recruiting

  • Ohio State University

    Columbus 4509177, Ohio 5165418 43221
    United States

    Active - Recruiting

  • Oregon Health & Science University (OHSU)

    Portland, Oregon 97239
    United States

    Site Not Available

  • Oregon Health & Science University (OHSU)

    Portland 5746545, Oregon 5744337 97239
    United States

    Active - Recruiting

  • Rhode Island Hospital

    Providence, Rhode Island 02903
    United States

    Site Not Available

  • Rhode Island Hospital

    Providence 5224151, Rhode Island 5224323 02903
    United States

    Active - Recruiting

  • Ralph H. Johnson VA Health Care System

    Charleston, South Carolina 29401
    United States

    Site Not Available

  • Ralph H. Johnson VA Health Care System

    Charleston 4574324, South Carolina 4597040 29401
    United States

    Active - Recruiting

  • KCA Neurology

    Tennessee, Tennessee 37067
    United States

    Site Not Available

  • KCA Neurology

    Tennessee City 4662109, Tennessee 4662168 37067
    United States

    Active - Recruiting

  • University of North Texas Health Science Center

    Fort Worth, Texas 76107
    United States

    Site Not Available

  • University of North Texas Health Science Center

    Fort Worth 4691930, Texas 4736286 76107
    United States

    Active - Recruiting

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