![180911114551-large](https://utterbuzz.com/wp-content/uploads/2019/05/180911114551-large.jpg)
Common genetic variants may underlie autism spectrum disorder and schizophrenia across human populations, according to a new study. In line with previous studies in Caucasians, the researchers found that Japanese individuals with autism spectrum disorder and schizophrenia have overlapping copy number variations (CNVs) — inter-individual variations in the number of copies of a particular gene.