PTTG1 and renal cell carcinoma: Overexpressing PTTG1 was correlated with worse prognosis in tumors, such as ovarian cancer (Parte et al., 2019), cervical cancer (Guo et al., 2019b), renal cell carcinoma (Tian et al., 2022), and colorectal cancer (Heaney et al., 2000).