Data Analysis for Drug Repurposing for Effective Alzheimer's Medicines (DREAM)- Dihydropyridine Calcium Channel Blockers Versus Hydrochlorothiazide

Active, not recruiting

• Conditions: Hypertension
• Interventions: Drug: Dihydropyridine calcium channel blocker; Drug: Hydrochlorothiazide

• Registration Number: NCT05125224
• Lead Sponsor: Brigham and Women's Hospital

Brief Summary

This study aims to evaluate the comparative risk of dementia/Alzheimer's disease onset between patients treated with medications that target specific metabolic pathways and patients treated with alternative medications for the same indication.

Detailed Description

This is a non-randomized, non-interventional study that is part of the DREAM Study of Brigham and Women's Hospital. DREAM is led by Dr. Madhav Thambisetty, MD, PhD, Chief of the Clinical and Translational Neuroscience Section, Laboratory of Behavioral Neuroscience, National Institute on Aging (NIA) intramural research program. This study aims to evaluate the comparative risk of dementia/Alzheimer's disease onset between patients treated with medications that target specific metabolic pathways and patients treated with alternative medications for the same indication using healthcare claims data.

Study Timeline

• Study Start: 2021-10-01
• Study First Submitted: 2021-11-08
• Study First Submitted QC: 2021-11-08
• Study First Posted: 2021-11-18
• Status Verified: 2023-07
• Primary Completion: 2023-07-07
• Last Update Submitted: 2023-07-17
• Last Update Posted: 2023-07-18
• Study Completion: 2023-12-31

Recruitment & Eligibility

• Status: ACTIVE_NOT_RECRUITING
• Sex: All
• Target Recruitment: 163720

Inclusion Criteria

• 1. Aged > 65 years on the index date
• 2. Enrollment in Medicare Part A, B, and D with no HMO coverage for 365 days prior to and including cohort entry date
• 3. At least two claims with hypertension diagnosis recorded in 365 days prior to cohort entry date

Exclusion Criteria

• 1. Prior history of dementia measured anytime prior to cohort entry date
• 2. Prior use of dihydropyridine CCBs, hydrochlorothiazide, or other antihypertensives anytime prior to cohort entry date

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
Dihydropyridine calcium channel blocker	Dihydropyridine calcium channel blocker	Exposure group
Hydrochlorothiazide	Hydrochlorothiazide	Reference group

Primary Outcome Measures

Name	Time	Method
Time to dementia onset	Through study completion (a median of 238 days)	Time to dementia onset, i.e., Alzheimer's disease, vascular dementia, senile, presenile, or unspecified dementia, or dementia in other diseases classified elsewhere. Please refer to uploaded protocol for full definition due to size limitations.

Secondary Outcome Measures

Name	Time	Method
Time to Alzheimer's disease onset	Through study completion (a median of 238 days)	Time to Alzheimer's disease onset. Please refer to uploaded protocol for full definition due to size limitations.

Trial Locations

Locations (1)

Brigham and Women's Hospital; 🇺🇸 Boston, Massachusetts, United States