Multiple recurrent de novo CNVs, including duplications of the 7q11.23 Williams syndrome region, are strongly associated with autism.
Sanders, Stephan, Gulhan Ercan-Sencicek, Vanessa Hus, Rui Luo, Michael Murtha, Daniel Moreno-De-Luca, Su Chu, et al. 2011. “Multiple Recurrent de Novo CNVs, Including Duplications of the 7q11.23 Williams Syndrome Region, Are Strongly Associated With Autism.”. Neuron 70 (5): 863-85.