PTTG1 and cancer: It has been well documented that PTTG1 and -2 act as two oncogenes in multiple human cancers.12, 32, 33 We found that PTTG3P expression was significantly positively correlated with PTTG1 expression in the Oncomine, bc-GenExMiner, cBioPortal, and UALCAN databases, but was markedly associated with PTTG2 expression only in the Oncomine and bc-GenExMiner databases.