LncRNA maternally expressed gene 3 (MEG3), which is present in the nucleus and cytoplasm [65], has a tumour-suppressive function across cancers, including colorectal [66], cervical [67], lung [68], gastric [69], ovarian [70], glioma [71], breast [72], liver [73], and osteosarcoma [74], among others. This evidence concerns the gene MEG3 and cancer.