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Fragile X Syndrome

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Atlas of Genetic Diagnosis and Counseling
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Abstract

Fragile X syndrome is the most common form of heritable intellectual disability, affecting approximately 1 in 1,250 males and 1 in 2,000 females (Webb 1989). The prevalence appears to be 1 in 4,000–6,000 males and 1 in 8,000–10,000 females. Martin and Bell first documented X-linked mental retardation in 1943. Subsequent identification of a fragile site on the long arm of the X chromosome (Lubs 1969), discovery of cell culture medium-dependent fragile site, and recognition of a unique constellation of physical features served to distinguish fragile X syndrome from other X-linked mental retardation syndromes.

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Chen, H. (2017). Fragile X Syndrome. In: Atlas of Genetic Diagnosis and Counseling. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-2401-1_96

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  • DOI: https://doi.org/10.1007/978-1-4939-2401-1_96

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