Can Rett Syndrome Be Inherited?

At what age is Rett syndrome usually diagnosed?

Rett syndrome is usually recognized in children between 6 to 18 months as they begin to miss developmental milestones or lose abilities they had gained..

What is the life expectancy of a girl with Rett syndrome?

Life expectancies are not well studied, although survival at least until the mid-20s is likely. The average life expectancy for girls may be mid-40s. Death is often related to seizure, aspiration pneumonia, malnutrition, and accidents.

What causes Rett?

What causes Rett syndrome? Almost all cases of Rett syndrome are caused by a mutation (a change in the DNA) in the MECP2 gene, which is found on the X chromosome (one of the sex chromosomes). The MECP2 gene contains instructions for producing a particular protein (MeCP2), which is needed for brain development.

How is Rett syndrome transmitted?

A condition is considered X-linked if the mutated gene that causes the disorder is located on the X chromosome, one of the two sex chromosomes. The inheritance is dominant if one copy of the altered gene in each cell is sufficient to cause the condition. Males with mutations in the MECP2 gene often die in infancy.

Does Rett syndrome run in families?

Rett syndrome rarely runs in families, as affected individuals do not reproduce. About 95 percent of cases are caused by new mutations in the gene encoding MECP2 protein.

Why is Rett Syndrome not inherited?

In nearly all cases, the genetic change that causes Rett syndrome is spontaneous, meaning it happens randomly. Such random mutations are usually not inherited or passed from one generation to the next. However, in a very small percentage of families, Rett mutations are inherited and passed on by female carriers.

Can Rett syndrome be prevented?

There’s no known way to prevent Rett syndrome. In most cases, the genetic mutation that causes the disorder occurs spontaneously.

What is the life expectancy of a person with Rett syndrome?

While it is known that Rett syndrome shortens lifespan, not much is known about specific life expectancy rates for people with Rett syndrome. It generally depends on the age when symptoms first begin and their severity. On average, most individuals with the condition survive into their 40s or 50s.

Is Rett syndrome a form of autism?

It is categorized as an autism spectrum disorder, but, unlike most forms of autism, Rett syndrome has a clear-cut cause—a mutation in a protein known as MeCP2.

Can Rett syndrome be detected before birth?

Prenatal diagnosis for Rett syndrome involves DNA testing to find out whether the developing fetus has a mutation in the MECP2, CDKL5, and FOXG1 genes. Rett syndrome mostly occurs as a result of a de-novo mutation, meaning that the defect is not inherited from the parents but appears spontaneously.

Does Rett syndrome affect intelligence?

One in 10,000 females suffers from Rett Syndrome, leaving them aware and alert but often without the ability to express themselves in any way. Without the ability to communicate through speech or hand movement, Rett Syndrome patients have not been able to demonstrate their intellectual abilities.

Is there a cure coming soon for Rett syndrome?

Although there is no cure for Rett syndrome, treatments are directed toward symptoms and providing support, which may improve the potential for movement, communication and social participation. The need for treatment and support doesn’t end as children become older — it’s usually necessary throughout life.