Retraction of ‘PKM2 overexpression protects against 6-hydroxydopamine-induced cell injury in the PC12 cell model of Parkinson’s disease via regulation of the brahma-related gene 1/STAT3 pathway’ by Lei Jiang et al., RSC Adv., 2019, 9, 14834–14840, DOI: 10.1039/C9RA01760G.