ZFPM2 and esophageal squamous cell carcinoma: As an oncogenic gene, ZFPM2-AS1 plays a role in retinoblastoma (Lyv et al., 2020), breast cancer (Zhao et al., 2020), small cell lung cancer (Yan et al., 2020), cervical cancer (Dai et al., 2020), esophageal squamous cell carcinoma (Sun and Wu, 2020), and other tumors.