Segment log2 ratios from each sample. This was done running the GADA algorithm (Pique-Regi et al., 2008) using the options "-M 10 -T 10 -a 2.5". Filter non-CNV segments using intensity thresholds. Merge remaining CNV "calls" within each sample. Adjacent calls of the same direction (gain or loss) are merged if both: the distance between calls is less than 10kb, and the distance between calls is less than 10% of the size of the largest of the two calls.