Brain Imaging in Children with Neurological Disorders Links Language Delay to Chromosome Deletion

A study team of radiologists and psychologists has found that children born with DNA copy number deletions in a specific region on chromosome 16 previously linked to neurodevelopmental problems show measurable delays in processing sound and language [1].

Child in a MEG machine

 

Most Risk for Autism Comes from Common Genetic Variation, Not Rare Genes

Most of the genetic risk for autism comes from versions of genes that are common in the population rather than from rare variants or spontaneous glitches, researchers funded by the National Institutes of Health have found. Heritability also outweighed other risk factors in this largest study of its kind to date.

Genetic risk autism

Disorganized Patches in the Brain Suggest Prenatal Origin of Autism

The architecture of the autistic brain is speckled with patches of abnormal neurons, according to research partially funded by the National Institute of Mental Health (NIMH), part of the National Institutes of Health. Recently published in the New England Journal of Medicine, the study suggests that brain irregularities in children with autism can be traced back to prenatal development [1].

Patch-like areas of disrupted neurons

Some Children Lose Symptoms, Diagnosis of Autism

Some children who are accurately diagnosed in early childhood with autism lose the symptoms and the diagnosis as they grow older, a study supported by the National Institutes of Health has confirmed [1]. The research team made the finding by carefully documenting a prior diagnosis of autism in a small group of school-age children and young adults with no current symptoms of the disorder.

Autism?

Autism Spectrum Disorder Diagnosis Prevalence Continues To Increase

According to an article in the Morbidity and Mortality Weekly Report, a publication of the U.S. Centers for Disease Control and Prevention (CDC), the prevalence of autism spectrum disorder (ASD) is higher than ever [1]. The CDC periodically surveys the prevalence of ASD, looking during each surveillance period at the percentage of 8-year-old children who have current ASD diagnoses. In 2000, a survey of children born in 1992 revealed that one in 150 had ASD. These numbers have been steadily climbing, such that the most recent survey — completed in 2008 and surveying children born in 2000 — indicates that one in 88 children has ASD. The numbers are even more disturbing for male children, who have an ASD prevalence of one in 54.

Autism awareness