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Is Rett syndrome an inherited disease?

Dr. Jeanne Morrison, PhD
Family Practitioner

Although Rett syndrome is a genetic disorder, less than 1 percent of recorded cases are inherited or passed from one generation to the next. Most cases are spontaneous, which means the mutation occurs randomly. However, in some families of individuals affected by Rett syndrome, there are other female family members who have a mutation of their methyl CpG binding protein 2 (MECP2) gene but do not show clinical symptoms. These females are known as "asymptomatic female carriers."

This answer is based on source information from the National Institute of Neurological Disorders and Stroke.

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