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Fragile X syndrome (FXS) is one of the most common causes of inherited intellectual disability. CDC is working to learn more about fragile X syndrome and fragile X-associated disorders to improve the health and well-being of people with these conditions.

Fragile X: What’s New

Uncover the facts

MYTH BUSTERS

Think you know fragile X? Guess again.

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Ruth with her family

MY STORY

Real stories from people living with fragile X syndrome.

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Boy siwning on a swing in the basement

OUR WORK

Researchers at CDC are working to better understand how this complex condition affects individuals and their families.

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