Taking prenatal vitamins for three months before conception and four weeks after could lower the risk of having a child with autism, particularly for women who carry certain genetic variants, according to a study published in the July issue of Epidemiology.

Children with autism have fewer DNA modifications that regulate gene expression compared with healthy siblings and controls, and show evidence of DNA damage, according to a study published 26 April in the Journal of Autism and Developmental Disorders.

A new analysis of children with autism and their unaffected parents provides the best evidence to date that mutations in multiple genes may work together to cause autism and related disorders.

Good mouse models of autism, and accurate tests to assay their phenotypes, are key to both narrowing down a cause and developing effective treatments, argues expert Jacqueline Crawley.

Identical twins can be genetically different, which could explain why they do not always share disorders such as schizophrenia or autism, according to a study published in March in PLoS One.

Early trauma alters both behavior and gene expression in three generations of mice, suggesting that epigenetic changes may contribute to ‘hidden heritability’ in neuropsychiatric disorders.

A gene that regulates the conversion of testosterone to estrogen in the brain could help explain why males are more susceptible to autism than are females, according to a study published in PLoS One in February.

A man’s risk of fathering a child with autism begins to rise at age 30 and significantly increases after age 50, according to a report published online 30 November in Molecular Psychiatry.

A new drug appears to relieve symptoms of fragile X syndrome by blocking the over-production of a key protein in a subset of people with the disorder, according to a 6 January study in Science Translational Medicine.

A gene involved in epigenetics — regulation of gene expression by modifying DNA, but without altering the sequence — is associated with autism in families that have only one child with the disorder, according to a study published in November.