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RECRUITING
NCT07636811
PHASE2

A Study to Evaluate Mivelsiran in Adult Participants With Early-Stage Down Syndrome-Associated Alzheimer's Disease (DS-AD)

Sponsor: Alnylam Pharmaceuticals

View on ClinicalTrials.gov

Summary

The purpose of the study is to evaluate the effect of mivelsiran in adult participants with early-stage DS-AD and to characterize the safety, tolerability, and pharmacodynamics (PD) of mivelsiran. The study will be conducted over 2 periods: a 24-month double-blind period and an optional 12-month open-label treatment extension (OLE) period. The estimated duration of study participation, inclusive of screening, treatment, and additional safety follow-up, is up to 39 months.

Official title: A Phase 2, Multicenter, Randomized, Double-blind, Placebo-controlled Study, to Evaluate Efficacy, Safety, Tolerability, and Pharmacodynamics of Intrathecally Administered Mivelsiran in Adult Participants With Early-Stage Down Syndrome-Associated Alzheimer's Disease (DS-AD)

Key Details

Gender

All

Age Range

40 Years - 55 Years

Study Type

INTERVENTIONAL

Enrollment

58

Start Date

2026-08-17

Completion Date

2031-07-30

Last Updated

2026-10-13

Healthy Volunteers

No

Interventions

DRUG

Mivelsiran

Mivelsiran will be administered intrathecally

DRUG

Placebo

Placebo will be administered intrathecally

Locations (10)

Clinical Trial Site

Maitland, Florida, United States

Clinical Trial Site

Naples, Florida, United States

Clinical Trial Site

Indianapolis, Indiana, United States

Clinical Trial Site

St Louis, Missouri, United States

Clinical Trial Site

Barcelona, Spain

Clinical Trial Site

Dos Hermanas, Spain

Clinical Trial Site

Madrid, Spain

Clinical Trial Site

Pamplona, Spain

Clinical Trial Site

Seville, Spain

Clinical Trial Site

Valencia, Spain