Association of PTTG1, BUB1B, AURKB, HLA-DPA1, and MKI67 mRNA expression with progression-free survival (PFS). mRNA expression was obtained from Gene Expression Omnibus databases GSE76019 and GSE76021. Plots represent mRNA expression according to each probe set for those selected genes. Higher expression of AURKB, BUB1B, PTTG1, and MKI67 was significantly associated with worse PFS.