Fragile X Syndrome (FXS)

Fragile X syndrome (FXS) is one of the most common causes of inherited intellectual disability.

This content is for informational purposes only. Always consult a healthcare professional.

Source: Centers for Disease Control and Prevention — Content from the Centers for Disease Control and Prevention (public domain).

Family of five sitting on bench outside with three young children diagnosed with fragile X syndrome.

Moving Fragile X Syndrome Research FORWARD

FORWARD-MARCH is the latest CDC-funded research study designed to learn more about FXS.

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Apr 28, 2026

Father sitting with two children that have a disability

About

Learn about fragile X syndrome, including symptoms, testing, treatment, and support options.

Apr 28, 2026

Boy with autism holding a pencil with a butterfly on it.

Notice of Funding Opportunity (NOFO)

NOFO supports lifespan resource needs for people with autism or fragile X syndrome.

May 18, 2026

three kids with fxs sitting on haystack

FXS-Related Concerns

Fragile X syndrome often occurs with other health conditions.

Apr 27, 2026

dark blue chromosomes with yellow stripe

Fragile X Associated Disorders

Explore Fragile X-associated disorders and how FMR1 gene changes affect health.

Apr 28, 2026

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Data and Statistics

CDC data and research on fragile X syndrome and related conditions.

Apr 28, 2026

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MythBusters: Fragile X Syndrome

CDC and the AAP join forces to debunk common myths about fragile X syndrome.

Apr 28, 2026

Child in blue helmet completing an obstacle course activity.

Preventive Care Services and Health Behaviors in Children with Fragile X Syndrome

Research highlights preventive care needs for people with fragile X syndrome.

Apr 28, 2026

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Healthcare Providers: Top 5 things to know about FXS

Top 5 things to know about FXS for healthcare providers.

Apr 27, 2026

⚠ Caution
Medical Disclaimer: This information is for educational purposes only. Always consult a healthcare professional for medical advice.