Retraction of ‘Long non-coding RNA MEG3 inhibits cell proliferation, migration, invasion and enhances apoptosis in non-small cell lung cancer cells by regulating the miR-31-5p/TIMP3 axis’ by Kui Li et al., RSC Adv., 2019, 9, 38200–38208, DOI: 10.1039/C9RA07880K.