Evaluating donanemab for preclinical Alzheimer's Disease
Official title: A Study of Donanemab Versus Placebo in Participants at Risk for Cognitive and Functional Decline of Alzheimer's Disease
Run by Eli Lilly and Company · NCT05026866 · Data updated 2026-05-14
This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.
This study is testing if a new medication called donanemab can help people with early signs of Alzheimer's Disease feel better and stay healthy compared to a placebo.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 65 Years to 80 Years |
| Sex | All |
| Enrollment | 2996 (estimated) |
| Sponsor | Eli Lilly and Company Industry-sponsored |
| Drugs / interventions | immunotherapy, donanemab |
| Locations | 216 sites (Birmingham, Alabama and 215 other locations) |
| Trial ID | NCT05026866 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are individuals with preclinical Alzheimer's Disease who show specific cognitive and biomarker indicators.
✕Probably not a fit
Patients with advanced Alzheimer's Disease or those without the required cognitive and biomarker criteria may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This study aims to assess the safety and efficacy of donanemab in individuals with preclinical Alzheimer's Disease. Approximately 800 participants will be enrolled to evaluate a different titration regimen over a 12-month period. Participants will undergo cognitive assessments and must have specific biomarkers indicating early Alzheimer's pathology. The study will compare the effects of donanemab against a placebo.
Why it matters
Potential benefit: If successful, this treatment could slow the progression of Alzheimer's Disease in its early stages.
How similar studies have gone: Other studies targeting early Alzheimer's Disease with similar approaches have shown promising results, suggesting potential for success.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * A Telephone Interview for Cognitive Status - modified (TICS-M) score reflective of intact cognitive functioning. * Has a phosphorylated tau (P-tau) result consistent with the presence of amyloid and early-tau pathology. * Has a reliable study partner and backup study partner familiar with overall function and behavior, such as day-to-day activities and cognitive abilities. * Have adequate literacy, vision, and hearing for neuropsychological testing at screening. * Contraceptive use by men or women should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies * Female participants include those who are infertile due to surgical sterilization (hysterectomy, bilateral oophorectomy, or tubal ligation), congenital anomaly such as Mullerian agenesis; or post menopausal (women 55 or older not on hormone therapy and had at least 12 months of spontaneous amenorrhea; or with a diagnosis of menopause prior to starting hormone replacement therapy. Exclusion Criteria: * Mild cognitive impairment or dementia, or significant other neurodegenerative disease that can affect cognition. * Current serious or unstable illnesses including cardiovascular, hepatic, renal, gastroenterologic, respiratory, endocrinologic, neurologic, psychiatric, immunologic, or hematologic disease that could interfere with the analysis of the study or a life expectancy of approximately ≤5 years. * History of cancer with high risk of recurrence and preventing completion of the trial. * History of clinically significant multiple or severe drug allergies, or severe posttreatment hypersensitivity reactions (including but not limited to erythema multiforme major, linear immunoglobulin A dermatosis, toxic epidermal necrolysis, and/or exfoliative dermatitis). * Have any clinically important abnormality at screening on magnetic resonance imaging (MRI) or clinical laboratory test results that could be detrimental to the participant or study integrity. * Have any contraindications for MRI, including claustrophobia or the presence of contraindicated metal (ferromagnetic) implants/cardiac pacemaker. * Have a centrally read MRI demonstrating presence of amyloid-related imaging abnormalities (ARIA-E), \>4 cerebral microhemorrhages, more than 1 area of superficial siderosis, any macrohemorrhage or severe white matter disease at screening. * Have had prior treatment with a passive anti-amyloid immunotherapy \<5 half-lives prior to randomization. * Have received active immunization against amyloid beta (Aβ) in any other study. * Have received active immunization against Aβ in any other study. * Current or previous use of prescription medications used as treatment for mild cognitive impairment (MCI) or AD. Addendum 7 Exclusion Criteria for Clinicaltrials.gov: * Same as the main study except contraindications for florbetapir F 18 PET are exclusionary.
Where it's running
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Care Access - 801 South Power Road, Mesa
Mesa, Arizona, United States Recruiting -
Banner Alzheimer's Institute
Phoenix, Arizona, United States Recruiting -
Banner Alzheimer's Institute Tucson
Tucson, Arizona, United States Recruiting -
Care Access Research - Huntington Beach
Huntington Beach, California, United States Recruiting -
Irvine Clinical Research
Irvine, California, United States Recruiting -
Healthy Brain Clinic
Long Beach, California, United States Recruiting
Show 44 more locations
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Neurovations
Napa, California, United States Recruiting -
Artemis Institute for Clinical Research
Riverside, California, United States Recruiting -
Clinical Trials Research
Sacramento, California, United States Recruiting -
Artemis Institute for Clinical Research
San Diego, California, United States Recruiting -
Syrentis Clinical Research
Santa Ana, California, United States Recruiting -
Providence Medical Foundation
Santa Rosa, California, United States Recruiting -
Infectious Disease Doctors Medical Group, APC
Walnut Creek, California, United States Recruiting -
Care Access - Aurora
Aurora, Colorado, United States Recruiting -
Mountain Neurological Research Center
Basalt, Colorado, United States Recruiting -
Invicro
New Haven, Connecticut, United States Recruiting -
VIN-Julie Schwartzbard
Aventura, Florida, United States Recruiting -
Bradenton Research Center, Inc.
Bradenton, Florida, United States Recruiting -
Finlay Medical Research
Greenacres City, Florida, United States Recruiting -
Indago Research & Health Center, Inc
Hialeah, Florida, United States Recruiting -
Jacksonville Center for Clinical Research
Jacksonville, Florida, United States Recruiting -
ClinCloud - Maitland
Maitland, Florida, United States Recruiting -
K2 Medical Research
Maitland, Florida, United States Recruiting -
ClinCloud - Viera
Melbourne, Florida, United States Recruiting -
Merritt Island Medical Research, LLC
Merritt Island, Florida, United States Recruiting -
Finlay Medical Research
Miami, Florida, United States Recruiting -
VIN-Andrew Lerman
Miami, Florida, United States Recruiting -
Adult Medicine of Lake County
Mount Dora, Florida, United States Recruiting -
Suncoast Clinical Research, Inc.
New Port Richey, Florida, United States Recruiting -
Charter Research - Winter Park
Orlando, Florida, United States Recruiting -
Headlands Research Orlando
Orlando, Florida, United States Recruiting -
Emerald Coast Neurology - Airport Boulevard
Pensacola, Florida, United States Recruiting -
Progressive Medical Research
Port Orange, Florida, United States Recruiting -
Care Access - Sun City Center - Cypress Village Boulevard
Sun City Center, Florida, United States Recruiting -
K2 Medical Research - Tampa
Tampa, Florida, United States Recruiting -
Stedman Clinical Trials
Tampa, Florida, United States Recruiting -
Charter Research - Lady Lake
The Villages, Florida, United States Recruiting -
Conquest Research
Winter Park, Florida, United States Recruiting -
iResearch Atlanta
Decatur, Georgia, United States Recruiting -
Center for Advanced Research & Education
Gainesville, Georgia, United States Recruiting -
North Georgia Clinical Research
Woodstock, Georgia, United States Recruiting -
Northwest Clinical Trials
Boise, Idaho, United States Recruiting -
Great Lakes Clinical Trials - Andersonville
Chicago, Illinois, United States Recruiting -
Care Access - South Indianapolis
Indianapolis, Indiana, United States Recruiting -
Josephson Wallack Munshower Neurology, PC
Indianapolis, Indiana, United States Recruiting -
Covenant Medical Center
Waterloo, Iowa, United States Recruiting -
Norton Brownsboro Hospital
Louisville, Kentucky, United States Recruiting -
Care Access - Lake Charles
Lake Charles, Louisiana, United States Recruiting -
Boston Center for Memory
Newton, Massachusetts, United States Recruiting -
Care Access - Quincy
Quincy, Massachusetts, United States Recruiting
+166 more sites. See ClinicalTrials.gov for the full list.
Study contacts
- Study coordinator: There may be multiple sites in this clinical trial. 1-877-CTLILLY (1-877-285-4559) or
- Email: clinical_inquiry_hub@lilly.com
- Phone: 1-317-615-4559
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Donanemab follow-up dosing in participants who previously completed TRAILBLAZER-ALZ 3-EXT
This study tests whether giving annual donanemab doses benefits people with Alzheimer's disease who finished the prior trial.
-
Donanemab in Chinese adults at risk for Alzheimer’s decline
This study tests donanemab versus placebo in Chinese adults who are cognitively unimpaired but show early signs suggesting they may decline due to Alzheimer’s disease.
-
Comparing Donanemab with Usual Care for Early Alzheimer's Disease
This study is testing if adding donanemab to regular care can help people with early Alzheimer's disease feel better over time compared to just sticking with usual care.
-
Blood biomarker cohort for memory disorders in older adults
This observational cohort will collect blood samples and brain imaging data from adults 50+ with memory disorders and a small group of healthy young adults to help find biomarkers.
-
Tau changes after hip or knee replacement surgery
Researchers will see if brain tau changes after hip or knee surgery and whether these changes relate to inflammation and thinking abilities.
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Low-Dose Whole-Brain Radiation Therapy With HeLaXON 1X in Mild Alzheimer's Dementia
This study will test whether a low-dose brain radiation treatment using HeLaXON helps people with mild Alzheimer's dementia improve or stabilize thinking and daily function.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.