PTTG1 and breast cancer: Pearson’s analysis showed that DHCR7 expression was markedly correlated with 11 genes related to breast cancer proliferation, including BIRC5, CCNB1, CDC20, NUF2, CEP55, NDC80, MKI67, PTTG1, RRM2, TYMS, and UBE2C (Figure 8A).