A new study by Norwegian researchers has found an association between cerebral palsy - a disease that is the main cause of physical disability in children - and family heredity, which indicates that among the possible causes of this disorder may include a genetic predisposition.
The research, whose results have been published in the British Medical Journal, was based on the analysis of data of 1,991,625 single births and 45,116 births of twins, which occurred in Norway between 1967 and 2002. There were 3,649 cases of cerebral palsy. , which meant a prevalence of the disease of 1.8 per thousand children, with a higher rate in the twins (5.1 per thousand) than in the pregnancies of a single baby (1.7 per thousand).
The twin possibilities of suffering cerebral palsy were the twin brothers of the children affected by this pathology
The greatest possibilities of suffering cerebral palsy were the twin brothers of the children affected by this pathology, who presented a relative risk of recurrence of cerebral palsy 15 times greater than those whose twin was healthy. In addition, in families that they had an affected child, there was a six to nine times higher risk of another sibling being born with the disease, and up to three times more risk of a second-degree relative having it.
The researchers also observed that when the parents suffered from the disease, they were 6.5 times more likely to have a child with paralysis compared to the healthy population. The increase in risk in all cases was maintained after excluding premature deliveries, which are considered a very important risk factor in cerebral palsy, and was independent of the sex of the baby.
These experts have stated that their work suggests that there is a genetic component in cerebral palsy, which is more evident among people with closer genetic links, and that although this is only one of the many possible causes of the disease, it should be taken into account. account in future studies.