An Open-label Long-term Safety Study of Buntanetap in Participants With AD

NCT07757204 | Not Yet Recruiting Phase 2 DMC FDA Drug

• 1 other identifier: ANVS-26001
• Study Type: interventional
• Target: 400
• Locations: 0 countries
• Sites: N/A

Brief Summary

This study will examine the long-term safety of buntanetap in participants with AD who have participated in a prior study of buntanetap in AD.

Conditions

Alzheimer's Dementia (AD)

Keywords

Alzheimer's Dementia; buntanetap; posiphen; Annovis Bio; Open-Label Extension

Outcome Measures

Primary Outcomes (4)

• Safety of buntanetap

  Safety assessments of participants with PD receiving treatment with buntanetap

  24 months of treatment

• Adverse Events (AE)

  An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of a study intervention, whether or not considered related to the study intervention

  24 months of study

• Treatment Emergent Adverse Events (TEAE)

  TEAE is an event that emerges during treatment, having been absent pretreatment, or worsens relative to the pretreatment state

  24 months of study

• Serious Adverse Events (SAE)

  SAE is defined as any untoward medical occurrence that results in death, is life-threatening, requires inpatient hospitalization, or prolongation of an existing hospitalization, results in persistent or significant disability or incapacity, is a birth defect or congenital anomaly

  24 months of study

Study Arms (1)

Single Arm

EXPERIMENTAL

All participants receive buntanetap 30 mg qd

Drug: buntanetap/posiphen

Interventions

buntanetap/posiphen DRUG

buntanetap 30 mg daily

Single Arm

Eligibility Criteria

• Age: 55 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Has participated in a prior Alzheimer's clinical trial with buntanetap.
• Have a study partner who will provide written informed consent to participate, is in frequent contact with the participant (minimum 10 hours per week), and will accompany the participant on study visits at designated times.
• Female participants of childbearing potential must have a negative urine pregnancy test at screening, be non-lactating, and must agree to use a highly effective method of contraception.
• Male participants must be sterile or sexually inactive or agree not to father a child during the study and one month after the last dose of study medication and must agree to use a barrier method for contraception. Female partners of male participants must adopt a highly effective method of contraception.
• General cognition and functional performance sufficiently preserved that the subject can provide written informed consent. Legally authorized representatives will be needed for participants whose MMSE is equal or less than 20 at screening.
• No evidence of current suicidal ideation or previous suicide attempt in the last month as evaluated in the CSSRS.
• Stability of permitted medications for at least 4 weeks prior to screening.
• Adequate visual and hearing ability (physical ability to perform all assessments).
• Good general health with no disease expected to interfere with the study.

You may not qualify if:

• Has history of psychiatric disorder such as schizophrenia, bipolar disorder, or major depression according to the criteria of the most current version of the DSM, unless they are stable on treatment. Mild depression or history of depression that is stable on treatment with SSRI or SNRI at a stable dose is permitted.
• Has non-AD dementia, such as vascular dementia, Lewy Body dementia, frontotemporal dementia, Parkinson's disease dementia, B12 and thyroid deficiency cause dementia.
• History of seizure disorder, but if stable on medication is acceptable.
• ANVS-25001 legacy participants: screening MRI of brain indicative of significant abnormality, including but not limited to, prior hemorrhage (\>5 microhemorrhages) or infarct \>1cm3, \>3 lacunar infarcts, cerebral contusion, encephalomalacia, aneurysm, vascular malformation, subdural hematoma, hydrocephalus, space-occupying lesion (e.g., abcess or brain tumor such as meningioma, unless they are documented and stable).
• Legacy participants from studies not ANVS-25001 submission of a historical MRI performed within the last year is encouraged for PI review. A screening MRI is not required.
• History or current evidence of long QT syndrome, Fridericia's formula corrected QT (QTcF) interval equal or greater than 450 ms for men and 460 ms for women, or torsades de pointes.
• Has bradycardia (\<50 bpm) or tachycardia (\>100 bpm) on the ECG at screening.
• Has uncontrolled Type-1 or Type-2 diabetes. A participant with HbA1c levels up to 7.5% can be enrolled if the investigator believes the participant's diabetes is under control.
• Has clinically significang renal (Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) \<45 mL/min/BSA (body surface area) or hepatic impairment (Alkaline phosphatase (ALP) \> 2.0 ULN and/or total bilirubin \> 2.0 ULN).
• Has any clinically significant abnormal laboratory values. Participants with liver function tests (aspartate aminotransferase \[AST\] or alanine aminotransferase \[ALT\]) greater than twice the upper limit of normal will be excluded.
• Is at imminent risk of self-harm, based on clinical interview and responses on the C-SSRS, or of harm to others in the opinion of the Investigators. Participants must be excluded if they report suicidal ideation with intent, with or without a plan or method (e. g., positive response to Items 4 or 5 in assessment of suicidal ideation on The Columbia Suicide Severity Rating Scale (C-SSRS)) in the past 2 months, or suicidal behavior in the past 6 months.
• Has cancer or has had a malignant tumor within the past year, except participants who underwent potentially curative therapy with no evidence of recurrence (participants with stable untreated cancer are not excluded).
• Alcohol / Substance use disorder, moderate to severe, in the last 5 years according to the most current version Diagnostic and Statistical Manual of Mental Disorders (DSM).
• Participation in another clinical trial with an investigational agent and have taken at least one dose of study medication, unless unblinded on placebo, within 4 weeks prior to the start of screening, or five half-lives of the investigational drug, whichever is greater. The end of a previous investigational trial is the date the last dose of an investigational agent was taken.
• Participants with learning disability or developmental delay.

Sponsors & Collaborators

• Annovis Bio Inc.: lead

MeSH Terms

Conditions

Alzheimer Disease

Interventions

phenserine

Condition Hierarchy (Ancestors)

Dementia; Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Tauopathies; Neurodegenerative Diseases; Neurocognitive Disorders; Mental Disorders

Central Study Contacts

Sarah MacCallum, BSN RN

CONTACT

484-875-3192; maccallum@annovisbio.com

Alexander Morin, PhD

CONTACT

484-875-3192; morin@annovisbio.com

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 31, 2026
• First Posted: August 11, 2026
• Study Start (Estimated): September 21, 2026
• Primary Completion (Estimated): February 21, 2030
• Study Completion (Estimated): May 1, 2030
• Last Updated: August 11, 2026

Record last verified: 2026-07