Drug Repurposing: Early clinical development (Milestone 7.D)
In Progress
Timeline Start - End
2018 - 2024Research Implementation Area
Drug Repurposing and Combination Therapy DevelopmentInitiate early clinical development for at least 6 approved drugs or drug combinations for the treatment or prevention of AD and AD-related dementias.
Success Criteria
- Completion of at least 4 phase II trials with repurposed drugs and/or drug combinations. Successful trials will provide conclusive evidence of therapeutic mechanism/target engagement.
Summary of Key Accomplishments
Fourteen early-stage clinical trials (Phase 1 and 2) testing 11 different FDA-approved drugs repurposed for the treatment of AD/ADRD have been supported. The pilot trials for candesartan (an antihypertensive), nicotine (used for smoking cessation) and metformin (a drug used to treat diabetes) showed positive results, and these repurposed drug candidates have been advanced to larger Phase 2 trials (candesartan and nicotine) and Phase 2/3 trials (metformin). In addition, six early-stage clinical trials have been supported to test six different dietary supplements as potential AD treatments. One of these trials testing the supplement benfotiamine, a synthetic derivative of vitamin B1, showed positive results and can be advanced to Phase 3 testing.
The key accomplishments summary is current as of July 2022.
Accomplishments/Implementation Activities
Funding Initiatives
- PAR-14-089: Early Stage Clinical Trials for the Spectrum of Alzheimer's Disease and Age-related Cognitive Decline (R01)
- PAR-16-365: Early Stage Clinical Trials for the Spectrum of Alzheimer's Disease and Age-related Cognitive Decline (R01)
- PAR-18-175: Early Stage Clinical Trials for the Spectrum of Alzheimer's Disease and Age-related Cognitive Decline (R01 Clinical Trial Optional)
- PAR-18-877: Early Stage Clinical Trials for the Spectrum of Alzheimer's Disease and Age-related Cognitive Decline (R01 Clinical Trial Optional)
- PAS-17-064: Advancing Research on Alzheimer's Disease (AD) and Alzheimer's-Disease-Related Dementias (ADRD) (R43/R44)
- PAS-18-187: Advancing Research on Alzheimer's Disease (AD) and Alzheimer's-Disease-Related Dementias (ADRD) (R43/R44 Clinical Trial Optional)
- PAS-17-065: Advancing Research on Alzheimer's Disease (AD) and Alzheimer's-Disease-Related Dementias (ADRD) (R41/R42)
- PAS-18-188: Advancing Research on Alzheimer's Disease (AD) and Alzheimer's-Disease-Related Dementias (ADRD) (R41/R42 Clinical Trial Optional)
Research Programs and Resources
- NIA Ongoing Alzheimer’s and Related Clinical Trials and Studies
- Escitalopram for Agitation in Alzheimer's Disease
- Anti-Viral therapy in Alzheimer's disease
- Lithium for Treatment of psychosis and agitation in Alzheimer's disease
- Long-term Nicotine Treatment of Mild Cognitive Impairment
- A Biomarker-Driven Trial of Angiotensin Receptor Blockers for Prodromal Alzheimer’s
- Antiviral Valacyclovir for therapy in AD
- Dronabinol for agitation in AD
- Lenalidomide to treat AD
- Evaluation of Brain and Cognitive Changes in Older Adults with MCI Taking Lithium to Prevent Alzheimer Type Dementia
- LUCINDA trial ( Lupron + AChEi) for AD
- Apathy in Alzheimer's Disease Methyphenidate Trial II (ADMET II)