What Should You Know about Fragile X Syndrome (FXS)?
Fragile X syndrome (FXS) is the most common known cause 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.
Popular Links
National Fragile X Foundation
Spreading awareness and supporting research for fragile X syndrome.
FRAXA Research Foundation
Finding a cure for fragile X syndrome.
Fragile X Video
Learn what causes fragile X syndrome.
Contact Us:
- Centers for Disease Control and Prevention
National Center on Birth Defects and Developmental Disabilities
Division of Human Development and Disability
1600 Clifton Road
MS E-88
Atlanta, GA 30333 - 800-CDC-INFO
(800-232-4636)
TTY: (888) 232-6348
New Hours of Operation
8am-8pm ET/Monday-Friday
Closed Holidays - cdcinfo@cdc.gov
