A copy-number deletion at chromosomal position 8p23.1. The detected CNV region in this study is marked by green filled square. The coordinate of the CNV region were recalculated based on hg19 by liftOver of UCSC genome browser. (A) CNV region overlapped with previously reported CNV regions from Database of Genomic Variants. (B) Several transcription factor binding sites as determined by ENCODE were found within this CNV region, indicating that copy-number deletion of this region may influence genetic regulation.