Copy Number Alterations in Infiltrating Ductal Carcinoma. Copy number data was generated using Genomic segmentation to obtain the different CN state partitions. The baseline was the HapMap 270 set of samples. The gains/losses are shown in red and blue respectively for each chromosome. Each copy number event was required occur in 5/22 samples. The cutoff values for copy numbers of 1.7 or less for deletions and 2.3 or greater for CN gains. The length of each bar represents the average copy number across all samples. The range is from -2 to 22.