The genetic risk of autism

If you have a child with autism, what are the chances of a new child suffering from this disorder? It was thought that the chances of having another child with autism they ranged between 3% and 10% but now a research published in the journal 'Pediatrics' states that the percentage is even higher.

According to the results of this research, the role of genetics in the chances of having an autistic child is further reinforced: 18.7% of children Students who had at least one older brother with autism developed this disorder.

The research authors selected 664 babies with siblings who had autism. They were followed from before six months to three years, at which time it can be clearly determined whether they have developed an autism spectrum disorder. This happened in 18.7% of cases.

In the case of men, the percentage of risk increased to 26.2%. Only 9% of the girls were diagnosed. The experts found another conditioner. If the child had more than one brother with autism, the incidence rate was 20.1%, if he had more than one, it increased to 32.2%.

Definitely, The more family members have the disorder, the greater the genetic component in that family

The study has been directed by Rally Ozonoff, Professor of Psychiatry at the MIND Institute (Medical Research of Neurodevelopmental Disorders) of the University of California-Davis (USA), who points out that caution must be taken when interpreting the figures, since They are a mean and cannot be individualized.

The problem with "predicting" with certainty autism is that there are many genes that are involved and not all have been identified. In addition, we must also know how they interact with each other and the environmental factors. Autism is related to genetic mutations, mercury contamination, extreme prematurity, maternal age, artificial oxytocin ... but there are still many questions to answer about the disorder.

In any case, and before the obvious genetic risks of autism, parents who give a sibling to an autistic child should be alert to suspicious symptoms of new babies, to detect as soon as possible if they suffer from the same disorder.