APLP2 and neurodevelopmental disorder: Novel, rare CNVs occurring in genes known to be associated with other neurodevelopmental disorders (e.g., KIRREL3) or potentially playing a role in neurodevelopment also were found (e.g., CTNNA2, NDST1, SLC24A2, NFIB, APLP2, ATP2C2, CECR2, DAGLA, and UPB1).