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AHEAD 3-45 Study: A Study to Evaluate Efficacy and Safety of Treatment With Lecanemab in Participants With Preclinical Alzheimer's Disease and Elevated Amyloid and Also in Participants With Early Preclinical Alzheimer's Disease and Intermediate Amyloid

Phase 3
Active, not recruiting
Conditions
Early Preclinical Alzheimer's Disease
Preclinical Alzheimer's Disease
Interventions
Drug: Placebo
Registration Number
NCT04468659
Lead Sponsor
Eisai Inc.
Brief Summary

The primary purpose of this study is to determine whether treatment with lecanemab is superior to placebo on change from baseline of the Preclinical Alzheimer Cognitive Composite 5 (PACC5) at 216 weeks of treatment (A45 Trial) and to determine whether treatment with lecanemab is superior to placebo in reducing brain amyloid accumulation as measured by amyloid positron emission tomography (PET) at 216 weeks of treatment (A3 Trial). This study will also evaluate the long-term safety and tolerability of lecanemab in participants enrolled in the Extension Phase.

Detailed Description

Not available

Recruitment & Eligibility

Status
ACTIVE_NOT_RECRUITING
Sex
All
Target Recruitment
1400
Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
A45 Trial: Placebo (Core Study)PlaceboParticipants will receive placebo (0.9 percent \[%\] sodium chloride solution), administered as IV infusion, every two weeks from Week 0 to 94, then every four weeks from Week 96 to 216.
A3 Trial: Lecanemab 5 mg/kg + 10 mg/kg (Core Study)LecanemabParticipants will receive lecanemab 5 mg/kg, administered as IV infusion, every four weeks from Week 0 to 4, then 10 mg/kg, administered as IV infusion, every four weeks from Week 8 to 216 in core study.
A3 Trial: Placebo (Core Study)PlaceboParticipants will receive placebo (0.9% sodium chloride solution), administered as IV infusion, every four weeks from Week 0 to 216.
A45 Trial: Lecanemab 5 mg/kg + 10 mg/kg (Core Study)LecanemabParticipants will receive lecanemab 5 milligram per kilogram (mg/kg), administered as intravenous (IV) infusion, every two weeks from Week 0 to 6, then 10 mg/kg, administered as IV infusion, every two weeks from Week 8 to 94, and 10 mg/kg, administered as IV infusion, every four weeks from Week 96 to 216 in core study.
A45 Trial: Lecanemab 10 mg/kg (Extension Phase)LecanemabParticipants progressing to early Alzheimer's disease (EAD) during the core study (progressors) will receive lecanemab 10 mg/kg, administered as IV infusion, every two weeks after transition to the extension phase through to at least Week 216 from randomization in the core study. Participants completing the core study (completers) will enter extension phase and will receive lecanemab 10 mg/kg, administered as IV infusion, every two weeks for up to Week 312. Eligible participants receiving placebo in core study will continue to extension phase.
A3 Trial: Lecanemab 10 mg/kg (Extension Phase)LecanemabParticipants progressing to EAD during the core study (progressors) will receive lecanemab 10 mg/kg, administered as IV infusion, every two weeks after transition to the extension phase through to at least Week 216 from randomization in the core study. Participants completing the core study (completers) will enter extension phase and will receive lecanemab 10 mg/kg, administered as IV infusion, every two weeks for up to Week 312. Eligible participants receiving placebo in core study will continue to extension phase.
Primary Outcome Measures
NameTimeMethod
A45 Trial: Change From Baseline in Preclinical Alzheimer Cognitive Composite 5 (PACC5) Score at Week 216Baseline, Week 216

PACC5(5 components):Free/cued selective reminding test:number of words recalled without cuing/with cuing(0\[worst\]-96\[best recall\]);Delayed Paragraph Recall test: recall of 1 short story(25 bits information),immediately after reading and again after delay of 30 minutes (0\[worst\]-25\[best recall\]);Digit-symbol substitution test: Participant uses a key to fill in blank squares as fast as possible in 90 seconds(0\[none\]-91\[best performance\]);Mini Mental State Score:to evaluate orientation,memory,attention,concentration,naming,repetition,comprehension and ability to create sentence,to copy 2 overlapping pentagons, scored as number of correctly completed items(0\[worse\]-30\[perfect performance\]);Category fluency task: participants generate words in 60 second belonging to a semantic category(total score:number of appropriate words generated per task, higher values indicate better performance).

A3 Trial: Change From Baseline in Amyloid Positron Emission Tomography (PET) Standard Uptake Value Ratio (SUVr) at Week 216Baseline, Week 216
Secondary Outcome Measures
NameTimeMethod
A45 Trial: Change From Baseline in tau Positron Emission Tomography (PET) Standard Uptake Value Ratio (SUVr) at Weeks 96 and 216Baseline, Week 96, Week 216
A45 Trial: Change From Baseline in Cognitive Function Index (CFI) at Week 216Baseline, Week 216

CFI assessment to assess the participant's perceived ability to perform high-level functional tasks in daily life and sense of overall cognitive functional ability. Study participants (18 questions) and their study partners (15 questions) independently rate the participant's abilities. Total score combines participant and study partner scores, with higher scores indicating greater impairment.

A3 Trial: Change From Baseline in tau Positron Emission Tomography (PET) Standard Uptake Value Ratio (SUVr) at Week 216Baseline, Week 216
A45 Trial: Change From Baseline in Amyloid Positron Emission Tomography (PET) Standard Uptake Value Ratio (SUVr) at Weeks 96 and 216Baseline, Week 96, Week 216

Trial Locations

Locations (105)

University of Alabama, Birmingham

🇺🇸

Birmingham, Alabama, United States

Banner Alzheimer's Institute

🇺🇸

Phoenix, Arizona, United States

Banner Sun Health Research Institute

🇺🇸

Sun City, Arizona, United States

UCI MIND

🇺🇸

Irvine, California, United States

University of Southern California

🇺🇸

Los Angeles, California, United States

Hoag Memorial Hospital Presbyterian

🇺🇸

Newport Beach, California, United States

Stanford University

🇺🇸

Palo Alto, California, United States

Sharp Mesa Vista Hospital

🇺🇸

San Diego, California, United States

Univeristy of California, San Francisco

🇺🇸

San Francisco, California, United States

University of California, Davis

🇺🇸

Walnut Creek, California, United States

Yale University School of Medicine

🇺🇸

New Haven, Connecticut, United States

Georgetown University

🇺🇸

Washington, District of Columbia, United States

Howard University

🇺🇸

Washington, District of Columbia, United States

Advanced Clinical Research Network, Corp

🇺🇸

Coral Gables, Florida, United States

Brain Matters Research

🇺🇸

Delray Beach, Florida, United States

Mayo Clinic Jacksonville

🇺🇸

Jacksonville, Florida, United States

K2 Medical Research - The Villages

🇺🇸

Lady Lake, Florida, United States

K2 Medical Research, Llc

🇺🇸

Maitland, Florida, United States

K2 Medical Research

🇺🇸

Maitland, Florida, United States

Wien Center for Clinical Research

🇺🇸

Miami Beach, Florida, United States

Gonzalez MD & Aswad MD Health Sciences

🇺🇸

Miami, Florida, United States

Renstar Medical Research

🇺🇸

Ocala, Florida, United States

Synexus Clinical Research

🇺🇸

The Villages, Florida, United States

University of South Florida - Health Byrd Alzheimer Institute

🇺🇸

Tampa, Florida, United States

Alzheimer's Research and Treatment Center

🇺🇸

Wellington, Florida, United States

Charter Research

🇺🇸

Winter Park, Florida, United States

Emory University

🇺🇸

Atlanta, Georgia, United States

Columbus Memory Center, PC

🇺🇸

Columbus, Georgia, United States

Northwestern University

🇺🇸

Chicago, Illinois, United States

Rush University Medical Center

🇺🇸

Chicago, Illinois, United States

Indiana University School of Medicine

🇺🇸

Indianapolis, Indiana, United States

University of Kansas

🇺🇸

Fairway, Kansas, United States

University of Kentucky

🇺🇸

Lexington, Kentucky, United States

Johns Hopkins University

🇺🇸

Baltimore, Maryland, United States

Boston University

🇺🇸

Boston, Massachusetts, United States

Brigham and Woman's Hospital Center for Alzheimer Research and Treatment

🇺🇸

Boston, Massachusetts, United States

Donald S.Marks, M.D.,P.C.

🇺🇸

Plymouth, Massachusetts, United States

University of Michigan (UMICH)

🇺🇸

Ann Arbor, Michigan, United States

Mayo Clinic, Rochester

🇺🇸

Rochester, Minnesota, United States

Washington University

🇺🇸

Saint Louis, Missouri, United States

Cleveland Clinic Lou Ruvo Center for Brain Health

🇺🇸

Cleveland, Ohio, United States

Advanced Memory Research Institute of New Jersey

🇺🇸

Toms River, New Jersey, United States

Icahn School of Medicine at Mount Sinai

🇺🇸

New York, New York, United States

Columbia University

🇺🇸

New York, New York, United States

University of Rochester

🇺🇸

Rochester, New York, United States

Duke Health Center

🇺🇸

Durham, North Carolina, United States

AMC Research

🇺🇸

Matthews, North Carolina, United States

Wake Forest University Health Sciences

🇺🇸

Winston-Salem, North Carolina, United States

Case Western Reserve University/University Hospitals

🇺🇸

Beachwood, Ohio, United States

Ohio State University

🇺🇸

Columbus, Ohio, United States

Central States Research, LLC

🇺🇸

Tulsa, Oklahoma, United States

Summit Research Network, Oregon

🇺🇸

Portland, Oregon, United States

Oregon Health & Science University

🇺🇸

Portland, Oregon, United States

Abington Neurological Associates

🇺🇸

Abington, Pennsylvania, United States

Keystone Clinical Studies, LLC

🇺🇸

Norristown, Pennsylvania, United States

University of Pennsylvania

🇺🇸

Philadelphia, Pennsylvania, United States

University of Pittsburgh

🇺🇸

Pittsburgh, Pennsylvania, United States

Rhode Island Hospital

🇺🇸

Providence, Rhode Island, United States

Butler Hospital Memory and Aging Program

🇺🇸

Providence, Rhode Island, United States

Ralph H. Johnson VA Medical Center

🇺🇸

Charleston, South Carolina, United States

Vanderbilt University Medical Center

🇺🇸

Nashville, Tennessee, United States

University of Texas, Southwestern MC at Dallas

🇺🇸

Dallas, Texas, United States

University of North Texas Health Sciences Center

🇺🇸

Fort Worth, Texas, United States

Baylor College of Medicine

🇺🇸

Houston, Texas, United States

Houston Methodist Neurological Institute

🇺🇸

Houston, Texas, United States

The University of Texas Health Science Center at San Antonio

🇺🇸

San Antonio, Texas, United States

Eastern Virginia Medical School

🇺🇸

Norfolk, Virginia, United States

National Clinical Research, Inc

🇺🇸

Richmond, Virginia, United States

University of Washington Memory and Brain Wellness Center

🇺🇸

Seattle, Washington, United States

SIBCR

🇺🇸

Seattle, Washington, United States

University of Wisconsin

🇺🇸

Madison, Wisconsin, United States

St Vincent's Hospital Sydney

🇦🇺

Darlinghurst, New South Wales, Australia

Calvary Mater Newcastle

🇦🇺

Waratah, New South Wales, Australia

Westmead Hospital

🇦🇺

Westmead, New South Wales, Australia

CALHN Memory Trials

🇦🇺

Adelaide, South Australia, Australia

Austin Hospital - Medical and Cognitive Research Unit

🇦🇺

Ivanhoe, Victoria, Australia

Alzheimer's Research Australia

🇦🇺

Nedlands, Western Australia, Australia

Centricity Research

🇨🇦

Hailfax, Nova Scotia, Canada

True North Clinical Research Inc.

🇨🇦

New Minas, Nova Scotia, Canada

True North Clinical Research

🇨🇦

New Minas, Nova Scotia, Canada

Parkwood Institute Main Building

🇨🇦

London, Ontario, Canada

Toronto Memory Program

🇨🇦

Toronto, Ontario, Canada

Sunnybrook Health Sciences Centre

🇨🇦

Toronto, Ontario, Canada

National Center for Geriatrics and Gerontology

🇯🇵

Obu-shi, Aichi, Japan

Fukuoka University Hospital

🇯🇵

Fukuoka-shi, Fukuoka, Japan

Kobe University Hospital

🇯🇵

Kobe-shi, Hyogo, Japan

Shonan Kamakura General Hospital

🇯🇵

Kamakura-shi, Kanagawa, Japan

Koseikai Takeda Hospital

🇯🇵

Kyoto-shi, Kyoto, Japan

Tohoku University Hospital

🇯🇵

Sendai-shi, Miyagi, Japan

Medical Corporation Heishinkai OPHAC Hospital

🇯🇵

Suita-shi, Osaka, Japan

The University of Tokyo Hospital

🇯🇵

Bunkyo-ku, Tokyo, Japan

P-One Clinic, Keikokai Medical Corporation

🇯🇵

Hachioji -shi, Tokyo, Japan

Tokyo Metropolitan Geriatric Hospital

🇯🇵

Itabashi-ku, Tokyo, Japan

National Center of Neurology and Psychiatry

🇯🇵

Kodaira-shi, Tokyo, Japan

ICR Clinical Research Hospital Tokyo

🇯🇵

Shinjuku-Ku, Tokyo, Japan

National University Hospital

🇸🇬

Singapore, Singapore

Barcelona Beta Brain Research Center

🇪🇸

Barcelona, Spain

Fundació ACE

🇪🇸

Barcelona, Spain

Hospital Universitario Quirón Salud Madrid

🇪🇸

Madrid, Spain

Fundacion CITA ALZHEIMER

🇪🇸

San Sebastian, Spain

Hospital Universitario Marqués de Valdeciila

🇪🇸

Santander, Spain

Bristol Brain Centre

🇬🇧

Bristol, United Kingdom

Glasgow Memory Clinic

🇬🇧

Glasgow, United Kingdom

St Pancras Clinical Research

🇬🇧

London, United Kingdom

Imperial Memory Unit

🇬🇧

London, United Kingdom

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