IFN-γ (P = 0.050) (Figure 1D) and IL-4 (P = 0.155) (Figure 1E) were not associated with the HADS-A score, but IL-17A was positively associated with the HADS-A score (P = 0.001) (Figure 1F) in elderly gastric cancer patients. This evidence concerns the gene IL17A and gastric cancer.