?:definition
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FRAXE is a form of nonsyndromic X-linked mental retardation with characteristic of mild intellectual deficit. The estimated prevalence in the general population is between 1 in 100,000 and 1 in 150,000. FRAXE manifests in individuals with more than 200 CCG repeats in the 5\' UTR of the AFF2 gene (Xq28).
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