Plain-English translation of NCT04390646 on ClinicalTrials.gov ↗ · Source last updated ·
Phase 3 — Testing in thousands of people, comparing the treatment against what doctors currently use. This is the last big step before approval.
This study is testing whether pulsatile GnRH therapy can help improve memory, thinking, and smell in people with Down syndrome. GnRH is a natural hormone that your body makes, and researchers believe it may help protect and restore brain function. The medication will be delivered through a small pump worn on your body.
People with Down syndrome often develop memory problems and cognitive decline earlier in life than others, and there are currently no treatments available for this. Early research in mice suggests this medication may help restore brain function and improve thinking skills by promoting the brain's natural ability to heal and grow.
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You would receive either the active medication or a placebo through a small pump that delivers doses at regular intervals throughout the day—similar to an insulin pump. You will visit the study clinic for assessments that include thinking and memory tests, smell tests, and an MRI brain scan. The study will involve regular visits over several months so researchers can track whether the treatment helps improve your cognition and sense of smell.
AI-generated summary from trial data · Jun 16, 2026 · Not medical advice
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