Genotyping was performed at the Keck Biotechnology Resource Laboratory at Yale University School of Medicine and at RUCDR Infinite Biologics® at Rutgers University using the Illumina HumanOmni1-Quad or OmniExpressExome BeadChip (Illumina, San Diego, CA). Samples from each pedigree were genotyped on the same platform. Genotype calling and CNV detection were performed as previously described 40 (link) (see Supplementary Methods for detail). A pCNV threshold of <=0.05 was used for initial selection of CNVs. CNV annotation was performed by CNVision, AnnotSV 41 (link), and a custom program for inheritance pattern analysis. CNVs that are smaller than 1,000 base pairs or larger than 2 million base pairs were excluded.