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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.

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Think you know fragile X? Guess again.

Video on the causes of Fragile X syndrome

Video: Causes of Fragile X

Watch this video to learn about the causes of Fragile X Syndrome.

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