Retraction of: 'Totarol, a natural diterpenoid, induces selective antitumor activity in SGC-7901 human gastric carcinoma cells by triggering apoptosis, cell cycle disruption and suppression of cancer cell migration', by Tong Xu, Lunhua Huang, Zhiqiang Liu, Dongwen Ma, Guowei Zhang, Xiaofei Ning, Xinyang Lu, Hongsheng Liu, Biao Jiang JBUON 2019;24(2):686-692; PMID:31128024. Following the publication of the above article, readers drew to our attention that part of the data was unreliable. The authors were requested to provide the raw data to prove the originality, but were unable to do so. After an investigation, the Editors of JBUON decided to retract this article. We thank the readers for bringing this matter to our attention. We apologize for any inconvenience it may cause.