What type of mutation is Rett syndrome?

What type of mutation is Rett syndrome?

In 1999, NICHD-supported scientists discovered that most classic Rett syndrome cases are caused by a mutation within the Methylcytosine-binding protein 2 (MECP2) gene. The MECP2 gene is located on the X chromosome. Between 90% and 95% of girls with Rett syndrome have a mutation in the MECP2 gene.

Is Rett syndrome on the spectrum?

Rett syndrome (RTT, MIM#312750) is a neurodevelopmental disorder that is classified as an autism spectrum disorder. Clinically, RTT is characterized by psychomotor regression with loss of volitional hand use and spoken language, the development of repetitive hand stereotypies, and gait impairment.

Is Rett syndrome autosomal recessive?

Most cases are sporadic, which means the mutation occurs randomly, and are not inherited. A few families have been described with more than one affected family member. These cases helped researchers determine that Rett syndrome has an X-linked dominant pattern of inheritance.

What is MECP2 in Rett syndrome?

Mutations of the methyl-CpG binding protein 2 (MECP2) gene are the most prevalent cause of classical RTT cases. MECP2 mutations or altered expression are also associated with a spectrum of neurodevelopmental disorders such as autism spectrum disorders with recent links to fetal alcohol spectrum disorders.

What is the life expectancy for someone with Rett syndrome?

What Is the Life Expectancy for Rett Syndrome? The average age of death for patients with Rett syndrome is about 24 years and in most cases, death is sudden and often secondary to pneumonia. Risk factors for sudden death include: Seizures.

Can someone with Rett syndrome understand me?

Summary: Children with Rett Syndrome, who cannot speak or use their hands to communicate and therefore were thought to be unable to understand and process information, do in fact exhibit meaningful visual search whereby they can process and prioritize information, new research shows.