TP53 and small cell lung carcinoma: These DEGs were significantly enriched in biological processes such as fatty acid metabolic process, neutral lipid biosynthetic process, acylglycerol biosynthetic process, regulation of cell morphogenesis, I-kappaB kinase/NF-kappaB signalling, fatty acid oxidation, response to tumour necrosis factor, cytokine-mediated signaling pathway, triglyceride biosynthetic process, etc. In KEGG enrichment analysis, DEGs were involved in Focal adhesion, ECM–receptor interaction, Human papillomavirus infection, Small cell lung cancer, p53 signaling pathway, PPAR signaling pathway.