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How many people are affected by or at risk of Rett syndrome?

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Current estimates suggest that Rett syndrome occurs in one out of every 10,000 to 15,000 girls born and affects 1 in 10,000 to 22,000 females in the U.S.1,2,3


  1. Amir, R. E., Van den Veyver, I. B., Wan, M., Tran, C. Q., Francke, U., & Zoghbi, H.Y. (1999). Rett syndrome is caused by mutations in X-linked MECP2. Nature Genetics, Oct;23(2), 185–188. [top]
  2. Zoghbi, H. Y. (2005). MeCP2 dysfunction in humans and mice. Journal of Child Neurology, 20, 736–740. [top]
  3. RD. (2012). Prevalence and incidence of Rett's syndrome. Retrieved June 21, 2012, from http://www.rightdiagnosis.com/r/retts_syndrome/prevalence.htm#prevalence_intro External Web Site Policy [top]

Last Reviewed: 01/14/2014
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