Autism researchers disagree on what genetic information or clinical services they should offer participants after a study ends.
Screening the genome for small chromosomal abnormalities may identify potential genetic causes of autism or intellectual disability in 16 percent of children tested, according to a study published 24 May in the European Journal of Paediatric Neurology.
Children who carry an extra copy of the 15q11-13 region of the genome usually have autism and sleep troubles, as well as distinctive brain-wave patterns and facial features, according to a report published 14 March in Autism Research.
A handful of studies point to dietary deficiencies as a contributing factor in some forms of autism, suggesting that supplements — such as carnitine or certain amino acids — may help treat and even prevent the disorder.
Small regions of DNA that are structurally prone to deletions and duplications are unlikely to play a major role in autism, according to research published 7 February in the American Journal of Human Genetics.
Deletions in the autism-linked gene AUTS2 trigger a variety of symptoms, including intellectual disability, developmental delay, a small head and unusual facial features, suggests a large study published 7 February in the American Journal of Human Genetics.