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This page describes the Phase 3 study in early Parkinson's patients. By submitting your email you are agreeing to be contacted about the study.  All information provided is confidential and does not imply that you want to participate.

Both Alzheimer’s and Parkinson’s diseases have been shown to have mixed pathology and proteinopathy, characterized by the presence of several neurotoxic aggregating proteins – beta amyloid, tau, alpha-synuclein, and TDP43. Buntanetap is an orally available small molecule that inhibits the translation of these proteins only under conditions where their translation is elevated – in sick nerve cells. Because it only affects these neurotoxic proteins when they are overexpressed, it restores their normal levels without affecting other proteins and normalizes homeostasis in the brain.

The data from our Phase 3 study in early PD patients showed that buntanetap improved MDS-UPDRS Part II, Part III, Part II+III and Total scores in patients with a >3-year diagnosis as well as in patients with Postural Instability and Gait Difficulties (PIGD). Moreover, we noticed that cognition (MMSE) worsened over 6 months in placebo Parkinson's patients, whereas for buntanetap-treated patients cognitive decline was completely stopped.


Find more information at ClinicalTrials.gov

IRB approved Alzheimer Study Flyer: Buntanetap in Treating Alzheimer’s and Parkinson’s Disease   

home 2 imageservices imagehome 2 imageservices image

The data from our phase 2 study in Alzheimer’s and Parkinson’s patients was published in JPAD (Journal of Prevention of Alzheimer’s Disease) and we have attached the paper. Here is a summary of what we found and why we have progressed our drug into phase 3.
Buntanetap is an orally available small molecule that inhibits the translation of multiple neurotoxic aggregating proteins only under conditions where their translation is elevated – in sick nerve cells. Because it only affects these neurotoxic proteins when they are overexpressed, it restores their normal levels without affecting other proteins and restores homeostasis in the brain.
Both Alzheimer’s disease and Parkinson’s disease have been shown to have mixed pathology and mixed proteinopathy. All four neurotoxic aggregating proteins are present in the brain of Alzheimer and Parkinson patients – Aβ forms plaques, tau forms tangles, alpha-synuclein forms Lewy bodies, and TDP43 forms its aggregates.

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Join Us in Transforming Parkinson's Treatment

A Open-Label Extension (OLE) Study of Buntanetap in Participants With Parkinson's Disease

Start: January, 2026
Last Updated: Dec 17, 2025
Status
Preparing for enrollment
Phase
Open-Label Extension
Age
40 - 85 years
Enrollment Goal
500
Study Drug:
Buntanetap (30mg)
Key Inclusions:
MMSE 21-30

H&Y stage 1-3 in ON state
Primary Endpoints:
Safety of buntanetap
Clinicaltrials.gov ID:
NCT07284784

PARTICIPANTS

Cohort 1 will enroll PD participants who have previously participated in buntanetap clinical trials (via invitation).

This cohort will help us understand how patients’ symptoms and overall disease course change after treatment is stopped, and how they respond when buntanetap treatment is restarted. Following patients through both periods offers valuable insight into the durability of treatment effects and what continued therapy may mean for patients over time.

Cohort 2 will enroll PD participants who are receiving deep brain stimulation (DBS) treatment and were not part of previous Annovis' clinical trials.

By including these these patients, we aim to understand how buntanetap works alongside DBS and the interaction between the two treatments. This population is frequently excluded from clinical research, as electrical stimulation can complicate outcome assessments and make it difficult to isolate treatment effects. The OLE study will help address this gap by offering these patients access to buntanetap, while also evaluating its safety and the potential to provide a meaningful additional benefit.

TREATMENT

Participants will take oral buntanetap (30mg) every day for 36 months.

OTHER ENDPOINTS

In addition to primary safety endpoints, the study will also measure cognition (MMSE), motor functions (MDS-UPDRS), and collect skin and plasma biomarkers.

TIMELINE

The study will include a 42-day screening period followed by a 36-month treatment.

Find more information at ClinicalTrials.gov

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Ask us about our clinical trials

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
CTA Image

IRB approved Alzheimer Study Flyer: Buntanetap in Treating Alzheimer’s and Parkinson’s Disease   

home 2 imageservices imagehome 2 imageservices image

The data from our phase 2 study in Alzheimer’s and Parkinson’s patients was published in JPAD (Journal of Prevention of Alzheimer’s Disease) and we have attached the paper. Here is a summary of what we found and why we have progressed our drug into phase 3.
Buntanetap is an orally available small molecule that inhibits the translation of multiple neurotoxic aggregating proteins only under conditions where their translation is elevated – in sick nerve cells. Because it only affects these neurotoxic proteins when they are overexpressed, it restores their normal levels without affecting other proteins and restores homeostasis in the brain.
Both Alzheimer’s disease and Parkinson’s disease have been shown to have mixed pathology and mixed proteinopathy. All four neurotoxic aggregating proteins are present in the brain of Alzheimer and Parkinson patients – Aβ forms plaques, tau forms tangles, alpha-synuclein forms Lewy bodies, and TDP43 forms its aggregates.

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Stay Updated with Annovis Bio, Inc.
(NYSE: ANVS)

Join the Annovis Bio Newsletter to receive the latest updates on our groundbreaking research and developments in neurodegenerative diseases like Alzheimer's and Parkinson's