TNF and small cell lung carcinoma: We found that these DEGs were involved in TNF signaling pathway, C-type lectin receptor signaling pathway, NF-kappa B signaling pathway, Cytokine-cytokine receptor interaction, IL-17 signaling pathway, Th17 cell differentiation, Human T-cell leukemia virus infection, NOD-like receptor signaling pathway, Kaposi sarcoma-associated herpesvirus infection and Small cell lung cancer.