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Effects of Semaglutide on Intracranial Blood Flow and Brain-Barrier Permeability in Type-2 Diabetes

NCT05780905 · Recruiting

Last updated 2026-05-28

This clinical trial is testing how semaglutide, a medication for type 2 diabetes, affects blood flow in the brain and the brain's protective barrier in adults with type 2 diabetes who have had a stroke or a transient ischemic attack.

Status Recruiting Currently enrolling participants.
Phase Phase 4 Monitors a drug already on the market.
Type Interventional (clinical trial)
Design Randomized, quadruple-blind screening study
Participants 50 people Planned (estimated).
Who can join Ages 40–65 · all sexes
Timeline Started 2024-01 · est. completion 2026-12
Where 1 site · United States

What this study is testing ClinicalTrials.gov NCT05780905 ↗

Description as written by the study sponsor.

A human subjects research study, the primary purpose of which is to assess the EFFECTS OF SEMAGLUTIDE ON INTRACRANIAL BLOOD FLOW AND BLOOD-BRAIN BARRIER PERMEABILITY IN TYPE-2 DIABETES (T2D) through testing of the intervention on patients in a clinical setting. The study will randomize subjects with diabetes to either semaglutide or matching placebo. Magnetic resonance images will be primary endpoint measured at baseline and at one year to assess effect of this FDA approved medication. Given the available evidence supporting the neuroprotective effect of this drug class and stroke reduction with semaglutide, and the investigators preliminary data showing that T2D had significantly reduced total number of distal arterial branches in the brain than non-T2D, the investigators expect treatment with semaglutide will be associated with improved intracranial blood flow condition.

Treatments tested

Main thing measuredIntracranial blood flow (IBF)
SponsorUniversity of Washington
Conditions studiedDiabetes Mellitus, Type 2, Stroke (CVA) or Transient Ischemic Attack
GLP-1 drugs semaglutide

Full protocol, eligibility, and contacts on ClinicalTrials.gov NCT05780905 ↗