Recurrence risk for autism spectrum disorders examined for full, half-siblings

Autism News

ASD is a complex neurological and developmental disorder that affects communication and behavior. It is typically diagnosed in early childhood, and the symptoms can range from mild to severe.

The recurrence risk for ASD refers to the likelihood of a child developing the disorder if they have a sibling with ASD. Studies have shown that the recurrence risk for ASD is higher in full siblings (who share both biological parents) compared to half siblings (who share only one biological parent).

One study published in the journal Pediatrics found that the recurrence risk for ASD in full siblings was 18.7%, while the recurrence risk for half siblings was 9.6%. This means that if a child has a full sibling with ASD, they are almost twice as likely to develop the disorder compared to a half-sibling with ASD.

However, it’s important to note that the recurrence risk for ASD is still relatively low, even in full siblings. This means that most children with a sibling with ASD will not develop the disorder themselves.

It’s also important to note that the recurrence risk for ASD can vary based on several factors, such as the severity of the disorder in the sibling and the specific genetic mutations that may be involved. For example, some genetic mutations are known to be more strongly associated with ASD, and the presence of these mutations may increase the recurrence risk for the disorder.

Overall, the recurrence risk for ASD is higher in full siblings compared to half-siblings, but it is still relatively low. It’s also important to remember that the recurrence risk can vary based on several factors and that most children with a sibling with ASD will not develop the disorder themselves.

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