- Fragile X Association of Southern California
- Promotes public awareness, provides a forum for parents and supports scientific research. - Fragile X Association of Washington State
- Serves as a resource for families, physicians, educators, and therapists, and working to increase public awareness. - Fragile X Syndrome - Macroorchidism
 - Fragile X Syndrome: Diagnostic and Carrier Testing
- Policy statement from the American College of Medical Genetics. - FRAXA Research Foundation
- National nonprofit, parent-run foundation which funds medical research aimed at treatment of Fragile X, a single gene disorder and the #1 inherited cause of mental retardation. - National Fragile X Foundation
 - Northern California Fragile X Association
- Formed to promote public awareness of Fragile X Syndrome. Learn more about the causes and symptoms, and the studies done to understand this disability. - Wikipedia: Fragile X Syndrome
- User-edited article about Fragile X Syndrome, also known as the Martin-Bell Syndrome. Includes history, causes, symptoms, diagnosis, and references.
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