Fragile X - Fragile X Syndrome - Mental Retardation - Genetic Defects - Autism - Learni... - 0 views
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Lee Vander Loop on 29 Mar 10Fragile X syndrome is the leading hereditary cause of developmental disabilities in all populations. The absence of a functional fragile X gene shuts off production of a special protein in the brain needed for normal cognitive development. Without this protein, children with the syndrome will never learn normally, despite hours of therapy and rehabilitation.