Study of AV-1959, an Amyloid Beta Vaccine
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT05642429 |
Recruitment Status :
Recruiting
First Posted : December 8, 2022
Last Update Posted : April 11, 2023
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Alzheimer Disease | Biological: AV-1959D Biological: Placebo | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 48 participants |
Allocation: | Randomized |
Intervention Model: | Sequential Assignment |
Masking: | Triple (Participant, Care Provider, Investigator) |
Primary Purpose: | Treatment |
Official Title: | A Phase I, Randomized, Double-Blind Study to Evaluate Safety and Tolerability of Amyloid-β Vaccine, AV-1959D, in Patients With Early Alzheimer's Disease. |
Actual Study Start Date : | February 27, 2023 |
Estimated Primary Completion Date : | February 20, 2026 |
Estimated Study Completion Date : | November 7, 2026 |

Arm | Intervention/treatment |
---|---|
Active Comparator: AV-1959D 500 μg |
Biological: AV-1959D
Three doses of AV-1959D administered as a sterile suspension via intradermal injection |
Active Comparator: AV-1959D 1000 μg |
Biological: AV-1959D
Three doses of AV-1959D administered as a sterile suspension via intradermal injection |
Active Comparator: AV-1959D 2000 μg |
Biological: AV-1959D
Three doses of AV-1959D administered as a sterile suspension via intradermal injection |
Placebo Comparator: Placebo |
Biological: Placebo
Three doses of Placebo administered as a sterile suspension via intradermal injection |
- Number of participants with Treatment-Emergent Adverse Events (TEAEs) or Serious Adverse Events (SAEs) [ Time Frame: Baseline up to Week 28 weeks ]
- Number of participants with clinically significant changes in vital signs [ Time Frame: Baseline up to Week 28 ]
- Number of participants with clinically significant changes in ECG results [ Time Frame: Baseline up to Week 28 ]
- Number of participants with clinically significant changes in laboratory test [ Time Frame: Baseline up to Week 28 ]
- Number of participants with clinically significant changes in physical examinations [ Time Frame: Screening up to Week 28 ]
- Number of participants with clinically significant changes in neurological examinations [ Time Frame: Screening up to Week 28 ]
- Number of participants with Vasogenic edema (ARIA-E) [ Time Frame: Screening, Weeks 8 and 28 ]
- Number of participants with New cerebral ischemic or hemorrhagic events (ARIA-H) or associated symptoms [ Time Frame: Screening, Weeks 8 and 28 ]
- Number of participants with Change from baseline in C-SSRS Score [ Time Frame: Baseline, Weeks 12 and 28 ]
- Concentration of possibly harmful autoreactive Th cell responses specific to Aβ [ Time Frame: Baseline, Week 8 ]
- Concentration of Serum anti-Aβ antibodies [ Time Frame: Baseline up to Week 28 post start of immunization with AV-1959D ]
- Concentration of Th cell responses specific to MultiTEP platform [ Time Frame: Baseline, Week 8 ]

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Ages Eligible for Study: | 60 Years to 85 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Male or female subjects from 60 to 85 years of age.
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Mild cognitive impairment (MCI) due to Alzheimer's disease (AD), and must have the following:
- Mini-Mental State Examination (MMSE) score from 22 to 30;
- Clinical Dementia Rating (CDR) global score of 0.5 or 1.0.
- A positive visual Aβ positron emission tomography (PET) scan.
Exclusion Criteria:
- Participation in another investigational drug or device study or treated with an investigational drug within 30 days or 5 half-lives, whichever is longer, before dosing.
- Prior administration of any amyloid-beta or tau immunotherapy (vaccine, antibody)
- Magnetic resonance imaging (MRI) showing evidence of existing safety issues.
- Use of immunomodulatory or growth-stimulating factors within 30 days prior to study entry.
- Any serious illness requiring systemic treatment and/or hospitalization within 4 weeks prior to study entry.
- Any major or unstable illness, including unstable ischemic cardiovascular disease, or require the use of excluded medications.
- Subjects with insulin-dependent diabetes.
- Subjects with pre-existing autoimmune diseases.
- A medical condition that in the opinion of the Investigator might be a contributing cause of cognitive impairment.
- History/evidence of severe local or systemic reactions to vaccination or significant allergic reactions.
- History of seizure disorder.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05642429
Contact: Roman Kniazev | 7145963981 | rkniazev@immed.org | |
Contact: Anahit Ghochikyan, PhD | 7145963981 | aghochikyan@immed.org |
United States, Arizona | |
Banner Alzheimer's Institute | Recruiting |
Phoenix, Arizona, United States, 85006 | |
Contact: Makenna Folkert 602-839-7617 makenna.folkert@bannerhealth.com | |
United States, California | |
Hoag Memorial Hospital | Recruiting |
Newport Beach, California, United States, 92663 | |
Contact: Adrienne Swietlikowski 949-764-6797 Adrienne.Swietlikowski@hoag.org | |
United States, Florida | |
University of South Florida | Recruiting |
Tampa, Florida, United States, 33613 | |
Contact: Yvonne Bannon 813-974-2832 ybannon@usf.edu | |
Alzheimer's Research and Treatment Center | Recruiting |
Wellington, Florida, United States, 33414 | |
Contact: Tonya Blackwell 561-209-2400 tblackwell@researchalz.com | |
United States, Georgia | |
Accel Research | Not yet recruiting |
Decatur, Georgia, United States, 30033 | |
Contact: Roman Kniazev | |
United States, New Jersey | |
Global Medical Institutes Princeton Medical Institute | Recruiting |
Princeton, New Jersey, United States, 08540 | |
Contact: Thibaud Belleface 609-921-6050 tbelleface@gminstitutes.com |
Study Director: | Michael Agadjanyan, PhD | IMM |
Responsible Party: | Institute for Molecular Medicine |
ClinicalTrials.gov Identifier: | NCT05642429 |
Other Study ID Numbers: |
IMM-AV1959D-101 R01AG074983 ( U.S. NIH Grant/Contract ) |
First Posted: | December 8, 2022 Key Record Dates |
Last Update Posted: | April 11, 2023 |
Last Verified: | March 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Alzheimer Disease Dementia Brain Diseases Central Nervous System Diseases Nervous System Diseases |
Tauopathies Neurodegenerative Diseases Neurocognitive Disorders Mental Disorders |