We determined the population frequency of CNVs detected in our study sample by comparison with CNV calls (based on ≥ 50% reciprocal overlap of its CNV length) from a larger reference population of 4,081 unrelated subjects analyzed in our laboratory using the same array platform. Unrelated subjects consisted of 3,309 population controls, 604 subjects with diagnosis of schizophrenia, 154 subjects with mood disorders, and 14 subjects with a diagnosis of ASD (Table S2). CNVs that were detected in > 1% of the reference population were excluded.