Song et al. have shown that THOR (testis-associated highly conserved oncogenic long non-coding RNA) is highly expressed in gastric cancer tissues and cells, whereas THOR knockdown decreases the expression of SOX9 through directly binding to its 3′UTR, thus inhibiting gastric cancer cell stemness and reversing the resistance of gastric cancer cells to DDP [141]. The gene discussed is SOX9; the disease is gastric cancer.