Higher expression of CDK12 was found in both invasive ductal breast carcinoma (fold change = 3.586) and invasive mixed breast carcinoma (fold change = 3.193) in Radvanyi’s database, and in invasive ductal breast carcinoma (fold change=1.938) and invasive lobular breast carcinoma (fold change = 1.603) in Zhao’s dataset. This evidence concerns the gene CDK12 and invasive ductal breast carcinoma.