An expanded CNV morbidity map generated from 29,085 children with developmental delay in comparison to 19,584 healthy controls by Coe et al. [35] showed a frequency of 0.4 % for CNTN6 CNVs (deletion and duplication) in patients with neurodevelopmental disorders and a frequency of 0.3 % in normal controls. Here, CNTN6 is linked to Global developmental delay.