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Standardized cognitive, behavioral, and neuroanatomical data are presented on 2 unrelated boys with the FRAXE (FMR2) GCC expansion mutation. In the context of normal IQ, both boys had a history of developmental delay, including significant problems with communication, attention, and overactivity. Additionally, one child was diagnosed with autistic disorder. Data from these 2 cases are compared to analogous information from previous reports about individuals with the FRAXE or FRAXA (FMR1) mutation. These comparisons support the idea that FRAXE is associated with nonspecific developmental delay and possibly high-functioning autism.

Type

Journal article

Journal

Am J Med Genet

Publication Date

21/02/1997

Volume

74

Pages

73 - 81

Keywords

Blotting, Southern, Brain, Child Behavior, Child, Preschool, Cognition, CpG Islands, Developmental Disabilities, Female, Fragile X Mental Retardation Protein, Fragile X Syndrome, Humans, Infant, Magnetic Resonance Imaging, Male, Mutation, Nerve Tissue Proteins, Nuclear Proteins, Pedigree, Proteins, RNA-Binding Proteins, Trans-Activators