Th1 cells secrete cytokines IFN-γ, TNF-α, IL-12, which play an essential role in tumor immunity (24), and IL-4, IL-6, and IL-10 are cytokines secreted by Th2 cells, which can inhibit the secretion of cytokines by Th1 cells and promote humoral immunity (25). The gene discussed is IL10; the disease is neoplasm.