E2F1 and neoplasm: Actually, previous researchers have identified lncRNAs as prognostic markers of PTC, such as TTTY10 (Chen et al., 2019), LINC00284, RBMS3-AS1, and ZFX-AS1 (Zhao et al., 2018) and five lncRNAs of PPARG, E2F1, CCND1, JUN, and EZH2 (Sun et al., 2020) for predicting tumor recurrence in PTC.