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New genetic candidates help explain why autism affects males more often than females

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Researchers at Baylor College of Medicine and collaborating institutions have identified genetic candidates that may help explain the approximately 4:1 male-to-female ratio in autism diagnoses. The study, published in the American Journal of Human Genetics, found that small variations in the MECP2 gene located on the X chromosome could partially account for this sex difference in autism prevalence.


Understanding the genetic basis for sex differences in autism could lead to more accurate diagnostic tools and potentially sex-specific therapeutic approaches. This research may also help identify at-risk individuals earlier and explain why autism presents differently across sexes.


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Researchers at Baylor College of Medicine, the Duncan Neurological Research Institute (Duncan NRI) at Texas Children’s Hospital and collaborating institutions have identified new genetic candidates that help explain why autism is diagnosed about four times more often in boys than in girls. The study, published in the American Journal of Human Genetics, reveals that small changes in the gene MECP2 on the X chromosome might help explain part of this difference.

Source: New genetic candidates help explain why autism affects males more often than females