We can now see that there are many patient's samples with relatively high expression of ERG (column B), and that if we look more closely that this relatively high expression is not uniform across the exons of ERG, but instead is in the exons closer to the 3' end of the gene (column C). Looking at column D, we can see that these samples that have relatively high expression also have an interchromosomal deletion of part of chromosome 21. If we hover over the genes at either end of the deletion, we can see that the end points fall within ERG and TMPRSS2.