Elemene is an antitumor drug independently developed in China, and β-elemene is the main component of its clinical preparation, with strong anticancer properties and low toxicity.[27] In previous studies, elemene has played an important role in the treatment of a variety of tumors, including lung cancer,[28] malignant pleural effusion,[29] and Burkitt's lymphoma.[30] Wu et al[31] reported that elemene induced cell apoptosis, inhibited the cell cycle, and reversed GSTP1 gene methylation in QGY7703 cells. This evidence concerns the gene GSTP1 and lung cancer.