SBF2 and cervical cancer: The lncRNAs were recently defined as competing endogenous RNAs (ceRNAs) of miRNAs to affect the tumor progression, and lncRNA SBF2-AS1 has been suggested to participate in the development of human cancers, such as liver cancer, cervical cancer, esophageal squamous carcinoma, non-small cell lung cancer and gastric cancer [8, 17–20].