thunbergii essential oil were involved in many tumor-related pathways (Additional file 2), including cytochrome P450 (k = 22), non-small cell lung cancer (k = 10), prostate cancer (k = 8), small cell lung cancer (k = 7), VEGF signaling pathway (k = 6), prostate thyroid cancer (k = 6), Wnt signaling pathway (k = 5), tyrosine metabolism (k = 4), and so on. This evidence concerns the gene VEGFA and small cell lung carcinoma.