IGFBP2 and autism: Other known disease genes in the credible intervals of the remaining CNV regions implicated in neurological and psychiatric disorders were: NPHP1 inside a 2q13 duplication (Autism and global developmental delay50,51), KANK1 (Cerebral palsy spastic quadriplegic 252) inside a small 9p24.3 DOCK8/KANK1 deletion, and NIPA1 (Autosomal dominant spastic paraplegia 653) inside the 15q11.2 BP1-BP2 deletion syndrome region.