According to the comparison of named gene expression of each subpopulation of tumor cell in bar charts, C0 was characterized by high expression of FABP4. The high expression of S100A8 characterizes C1, while C2 was characterized by the elevated expression of TFF2. Similarly, C3 was distinguished by its heightened expression of CRH, and C4 exhibits a notable increase in BIRC5 expression. The gene discussed is BIRC5; the disease is neoplasm.