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.





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.