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

Mass General Brigham

Status: Active, not recruiting

Conditions: Hypertension

Treatments: Drug: Hydrochlorothiazide; Drug: Dihydropyridine calcium channel blocker

Study type: Observational

Funder types: Other; NIH

Identifiers

NCT05125224

2019A010961-6

Details and patient eligibility

About

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.

Full 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.

Enrollment: 163,720 patients

Sex: All

Ages: 65+ years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

Please see https://docs.google.com/spreadsheets/d/1VlyY3zcxoRp0tH7yv8rSOEggSO6WQ0VYEjq-6KlSSt8/edit?usp=sharing or Appendix A for full code and algorithm definitions.

Medicare timeframe: 2008 to 2018 (end of data availability).

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

Trial design

163,720 participants in 2 patient groups

Dihydropyridine calcium channel blocker

Description:

Exposure group

Treatment:

Drug: Dihydropyridine calcium channel blocker

Hydrochlorothiazide

Description:

Reference group

Treatment:

Drug: Hydrochlorothiazide