- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT07464028
Terazosin And Metabolic Energetics in Parkinson's Disease (TAME-PD:)
March 12, 2026 updated by: Nandakumar Narayanan
Assessing Target Engagement for Terazosin in Parkinson's Disease (TZPD2)
This study investigates if Terazosin can improve metabolism in PD.
Study Overview
Status
Not yet recruiting
Conditions
Intervention / Treatment
Study Type
Interventional
Enrollment (Estimated)
120
Phase
- Phase 2
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Nandakumar Narayanan, MD
- Phone Number: +1 319 353 5698
- Email: nandakumar-narayanan@uiowa.edu
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
No
Description
Parkinson's disease
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
|---|---|
|
Placebo Comparator: Placebo
|
Placebo control for Terazosin
|
|
Experimental: Active arm
Terazosin 5 mg
|
This drug increases glycolysis in Parkinson's disease.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
ATP
Time Frame: at 1.5 year
|
Changes in whole-blood ATP relative to baseline at 6 weeks and 1.5 years
|
at 1.5 year
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Cai R, Zhang Y, Simmering JE, Schultz JL, Li Y, Fernandez-Carasa I, Consiglio A, Raya A, Polgreen PM, Narayanan NS, Yuan Y, Chen Z, Su W, Han Y, Zhao C, Gao L, Ji X, Welsh MJ, Liu L. Enhancing glycolysis attenuates Parkinson's disease progression in models and clinical databases. J Clin Invest. 2019 Oct 1;129(10):4539-4549. doi: 10.1172/JCI129987.
- Simmering JE, Welsh MJ, Liu L, Narayanan NS, Pottegard A. Association of Glycolysis-Enhancing alpha-1 Blockers With Risk of Developing Parkinson Disease. JAMA Neurol. 2021 Apr 1;78(4):407-413. doi: 10.1001/jamaneurol.2020.5157.
- Simmering JE, Welsh MJ, Schultz J, Narayanan NS. Use of Glycolysis-Enhancing Drugs and Risk of Parkinson's Disease. Mov Disord. 2022 Nov;37(11):2210-2216. doi: 10.1002/mds.29184. Epub 2022 Aug 22.
- Hart A, Aldridge G, Zhang Q, Narayanan NS, Simmering JE. Association of Terazosin, Doxazosin, or Alfuzosin Use and Risk of Dementia With Lewy Bodies in Men. Neurology. 2024 Jul 23;103(2):e209570. doi: 10.1212/WNL.0000000000209570. Epub 2024 Jun 19.
- Schultz JL, Gander PE, Workman CD, Boles Ponto LL, Cross S, Nance CS, Groth CL, Taylor EB, Ernst SE, Xu J, Uc EY, Magnotta VA, Welsh MJ, Narayanan NS. A dose-finding study shows terazosin enhanced energy metabolism in neurologically healthy adults. J Parkinsons Dis. 2025 Nov;15(7):1253-1263. doi: 10.1177/1877718X251356503. Epub 2025 Aug 10.
- Schultz JL, Brinker AN, Xu J, Ernst SE, Tayyari F, Rauckhorst AJ, Liu L, Uc EY, Taylor EB, Simmering JE, Magnotta VA, Welsh MJ, Narayanan NS. A pilot to assess target engagement of terazosin in Parkinson's disease. Parkinsonism Relat Disord. 2022 Jan;94:79-83. doi: 10.1016/j.parkreldis.2021.11.022. Epub 2021 Nov 27.
- Weber MA, Sivakumar K, Tabakovic EE, Oya M, Aldridge GM, Zhang Q, Simmering JE, Narayanan NS. Glycolysis-enhancing alpha1-adrenergic antagonists modify cognitive symptoms related to Parkinson's disease. NPJ Parkinsons Dis. 2023 Mar 2;9(1):32. doi: 10.1038/s41531-023-00477-1.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Estimated)
July 1, 2026
Primary Completion (Estimated)
July 1, 2030
Study Completion (Estimated)
July 1, 2031
Study Registration Dates
First Submitted
March 5, 2026
First Submitted That Met QC Criteria
March 5, 2026
First Posted (Actual)
March 11, 2026
Study Record Updates
Last Update Posted (Actual)
March 16, 2026
Last Update Submitted That Met QC Criteria
March 12, 2026
Last Verified
March 1, 2026
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 202510685
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
YES
IPD Plan Description
We will share de-identified data after study completion.
IPD Sharing Time Frame
At study publication
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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