The protein missing in people with fragile X syndrome may activate the expression of a signaling protein dubbed NOS1 during prenatal development of brain regions involved in language and social skills, according to a study published 11 May in Cell.
Spectrum: Autism Research News
A gene that changed rapidly after the human genome diverged from that of Neanderthals plays a critical role in brain development, according to unpublished results presented Thursday at the International Congress of Human Genetics in Montreal, Canada.
Spontaneous mutations that change a single DNA base account for a large proportion of cases of unexplained mental retardation, according to a study published in the December Nature Genetics.
A common variation within a region on chromosome 16 puts a large proportion of the general population at risk for intellectual disability, according to a study published in August in Nature Genetics.
Children with Williams syndrome — a rare genetic disorder that leads to mental retardation and overt friendliness — hold stereotypes based on gender, but not race, according to a report published in Current Biology. Because those with Williams syndrome don’t have social fear, the study suggests racial stereotypes are based partly on fear.