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Terminated Phase 3 Interventional Results available

221AD301 Phase 3 Study of Aducanumab (BIIB037) in Early Alzheimer's Disease

ClinicalTrials.gov ID: NCT02477800

Public ClinicalTrials.gov record NCT02477800. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 19, 2026, 9:13 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 3 Multicenter, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study to Evaluate the Efficacy and Safety of Aducanumab (BIIB037) in Subjects With Early Alzheimer's Disease

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The primary objective of the study is to evaluate the efficacy of monthly doses of aducanumab in slowing cognitive and functional impairment as measured by changes in the Clinical Dementia Rating-Sum of Boxes (CDR-SB) score as compared with placebo in participants with early AD. Secondary objectives are to assess the effect of monthly doses of aducanumab as compared with placebo on clinical progression as measured by Mini-Mental State Examination (MMSE), AD Assessment Scale-Cognitive Subscale (13 items) \[ADAS-Cog 13\], and AD Cooperative Study-Activities of Daily Living Inventory (Mild Cognitive Impairment version) \[ADCS-ADL-MCI\].

Study identification

NCT ID
NCT02477800
Recruitment status
Terminated
Study type
Interventional
Phase
Phase 3
Lead sponsor
Biogen
Industry
Enrollment
1,653 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
50 Years to 85 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Aug 13, 2015 (Actual)
Primary completion
Aug 8, 2019 (Actual)
Completion
Aug 8, 2019 (Actual)
Last update posted
Sep 2, 2021

2015 – 2019

United States locations

U.S. sites
59
U.S. states
25
U.S. cities
55
Facility City State ZIP Site status
St. Joseph's Hospital and Medical Center Phoenix Arizona 85013 —
Center for Neurosciences Tucson Arizona 85718 —
Neurology Center of North Orange County Fullerton California 92835 —
Senior Clinical Trials, Inc. Laguna Hills California 92653 —
Torrance Clinical Research Institute, Inc. Lomita California 90717 —
University of California - Los Angeles Los Angeles California 90095 —
UCSF - Memory and Aging Center San Francisco California 94158 —
California Neuroscience Research Medical Group Inc. Sherman Oaks California 91403 —
Southern California Research LLC Simi Valley California 93065 —
Institute for Neurodegenerative Disorders New Haven Connecticut 06510 —
Georgetown University Hospital Washington D.C. District of Columbia 20057 —
Brain Matters Research, Inc. Delray Beach Florida 33445 —
Neuropsychiatric Research Center of Southwest Florida Fort Myers Florida 33912 —
Jacksonville Center for Clinical Research Jacksonville Florida 32216 —
University of Miami Miami Florida 33136 —
Miami Jewish Health Systems Miami Florida 33137 —
Compass Research Main Orlando Florida 32806 —
Palm Beach Neurological Center Palm Beach Gardens Florida 33410 —
Stedman Clinical Trials, LLC Tampa Florida 33613 —
USF Health Byrd Institute Tampa Florida 33616 —
Meridien Research Tampa Florida 33634 —
Compass Research Main The Villages Florida 32162 —
Premiere Research Institute West Palm Beach Florida 33407 —
Cleveland Clinic Florida - Weston Weston Florida 33331 —
Alexian Brothers Neurosciences Institute Elk Grove Village Illinois 60007 —
Advocate Lutheran General Hospital Park Ridge Illinois 60068 —
Fort Wayne Neurological Center Fort Wayne Indiana 46804 —
Indiana University School of Medicine Indianapolis Indiana 46202 —
University of Kansas Medical Center Research Institute, Inc. Kansas City Kansas 66160 —
Via Christi Research, a division of Via Christi Hospitals Wichita, Inc. Wichita Kansas 67214 —
Baptist Health Lexington Lexington Kentucky 40503 —
Brigham & Women's Hosp End/Dbt Boston Massachusetts 02115 —
Beth Israel Deaconess Medical Center Boston Massachusetts 02215 —
ActivMed Practices & Research Methuen Massachusetts 01844 —
Donald S. Marks, M.D., P.C. Plymouth Massachusetts 02360 —
Mayo Clinic Rochester Minnesota 55905 —
Washington University St Louis Missouri 63131 —
Las Vegas Medical research Las Vegas Nevada 89113 —
Advanced Memory Research Institute of NJ, PC Toms River New Jersey 08755 —
Albany Medical College Albany New York 12208 —
New York University Medical Center PRIME New York New York 10016 —
University of Rochester Rochester New York 14620 —
ANI Neurology, PLLC d/b/a Alzheimer's Memory Center Charlotte North Carolina 28270 —
Raleigh Neurology Associates, P.A. Raleigh North Carolina 27607-6010 —
Cleveland Clinic Cleveland Ohio 44195 —
Lynn Health Science Institute Oklahoma City Oklahoma 73112 —
The Clinical Trial Center, LLC Jenkintown Pennsylvania 19046 —
University of Pittsburgh Pittsburgh Pennsylvania 15213 —
Northeastern Pennsylvania Memory and Alzheimer's Center Plains Pennsylvania 18705 —
Rhode Island Mood & Memory Research Institute East Providence Rhode Island 02915 —
Butler Hospital Providence Rhode Island 02906 —
Medical University of South Carolina (MUSC) Charleston South Carolina 29425 —
Neurology Clinic, PC Cordova Tennessee 38108 —
University of Tennessee Medical Center. Knoxville Knoxville Tennessee 37920 —
Clinical Neuroscience Solutions, Inc. Memphis Tennessee 38119 —
UT Southwestern Medical Center at Dallas Dallas Texas 75390 —
Baylor College of Medicine Houston Texas 77030 —
National Clinical Research Inc.-Richmond Richmond Virginia 23294 —
Medical College of Wisconsin, Inc. Milwaukee Wisconsin 53266 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 122 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT02477800, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Sep 2, 2021 · Synced Oct 19, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT02477800 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →