MIR31HG and cancer: We shed light on this recently-discovered lncRNA because several reports have shown that the lncRNA MIR31HG is aberrantly expressed in different cancers and affects numerous biological processes, including proliferation, metastasis, epithelial-mesenchymal transition (EMT), cellular senescence, and apoptosis in tumour development (Gupta et al., 2020; Tu et al., 2020).