Further comparisons with normal breast tissue revealed that CDK7 was upregulated in ductal breast carcinoma (fold change = 1.734) in Sorlie’s dataset, and in lobular breast carcinoma (fold change = 1.841) and ductal breast carcinoma (fold change = 1.697) in Sorlie’s dataset 2. This evidence concerns the gene CDK7 and breast ductal adenocarcinoma.