The average expressions of these genes in breast tumor samples compared to healthy mammary biopsies (tumor/healthy) were as follows: CCNB2 (0.483/−0.869), CCNB1 (0.262/−0.472), PTTG1 (0.398/−0.719), RACGAP1 (0.338/−0.609), and UBE2C (0.565/−1.016). This evidence concerns the gene PTTG1 and breast neoplasm.