Articles Rare chromosomal deletions and duplications in attention-defi cit hyperactivity disorder: a genome-wide analysis

Summary Background Large, rare chromosomal deletions and duplications known as copy number variants (CNVs) have been implicated in neurodevelopmental disorders similar to attention-defi cit hyperactivity disorder (ADHD). We aimed to establish whether burden of CNVs was increased in ADHD, and to investigate whether identifi ed CNVs were enriched for loci previously identifi ed in autism and schizophrenia