Schizophrenia was the disorder with the least amount of overlap with ID. Using strict criteria there were a total of ten CNVs that were specific to schizophrenia (Table 1). In general, these CNVs were smaller on average at approximately 379 kb and contained fewer genes, 2.8 genes on average. The majority of these schizophrenia-only CNVs were Category B (7 of 10).