Down syndrome is a genetic condition caused by an extra copy of chromosome 21. It affects about 1 in 700 babies born in the United States. People with Down syndrome have intellectual disability of varying degree, distinctive physical features, and higher risk for heart defects, leukemia, Alzheimer's disease, and other medical conditions.
What's actually going on in research
Trials are testing whether drugs can improve cognition and memory in children and adults with Down syndrome. Some focus on targeting overactive GABA signaling in the brain, others on clearing beta-amyloid linked to early Alzheimer's. Research also addresses congenital heart defects, immune dysfunction, and whether interventions in infancy can strengthen developmental outcomes.
Cognitive enhancement drugs
Several trials test drugs that may improve learning and memory by adjusting brain chemistry affected by the extra chromosome. One approach blocks excess GABA activity that appears to interfere with forming new memories.
Alzheimer's prevention
Most adults with Down syndrome develop Alzheimer's-related changes by age 40. Trials are testing whether drugs that clear amyloid or reduce inflammation can delay or prevent dementia in this population.
Early intervention studies
Research examines whether specific therapies started in infancy improve motor skills, language, and social development. Some studies combine physical, occupational, and speech therapy with parent training.
What to know before you search
Eligibility often depends on age, baseline cognitive or developmental level, presence of specific medical conditions like Alzheimer's or heart defects, and whether prior therapies have been tried.
What types of trials are currently open
- Cognitive trials — Testing drugs or supplements aimed at improving memory, attention, and learning in children or adults with Down syndrome.
- Alzheimer's trials — Testing drugs to prevent or delay dementia in adults with Down syndrome, who face very high Alzheimer's risk.
- Developmental trials — Studies of early interventions in babies and toddlers to support motor, language, and cognitive development.
- Heart defect studies — Research on surgical techniques and outcomes for the congenital heart defects that affect about half of babies with Down syndrome.
- Natural history studies — Following people with Down syndrome over time to understand how health changes with age and what medical issues arise most often.
Recently added Down Syndrome trials
Donate a blood sample to help validate a new prenatal screening test
The goal of the ADVANCE (Assay Development and Validation for Pre-Natal and Obstetric Conditions) study is to compare the concordance of results of a novel non-invasive circulating fetal cell (CFC) assay to the results of prenatal invasive diagnostic testing or postnatal genetic and clinical diagnosis of the resulting neonate. This is a prospective study of pregnant individuals.
Complete heart and blood vessel tests to advance Down syndrome research
Adults with Down syndrome (Ds) are often thought to have a lower risk of heart and blood vessel disease because they tend to have lower blood pressure and fewer heart attacks than people without Ds. However, recent research suggests that heart and blood vessel diseases, including stroke, are becoming a more common cause of death in adults with Ds as life expectancy increases. Despite these findings, studies examining heart and blood vessel health in adults with Ds have produced mixed results, making it difficult to determine their true risk and whether preventive strategies are needed. This study will investigate the health of blood vessels in adults with Ds and compare the results with those of adults without Ds. Healthy blood vessels are important because they help deliver blood and oxygen throughout the body. Changes in blood vessel function and stiffness can occur with aging and may increase the risk of heart disease, stroke, kidney disease, and memory problems. The study aims to determine whether adults with Ds experience changes in blood vessel health that may place them at increased cardiovascular risk. Specifically, the study will: (1) Examine how well blood vessels function in adults with Ds; (2) Measure the stiffness of arteries in adults with Ds; (3) Compare two methods used to assess blood vessel function to determine whether a simpler exercise-based test provides results similar to a commonly used standard test. The findings may improve understanding of cardiovascular risk in adults with Ds and help guide future strategies to promote healthy aging in this population.
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