The genes exhibiting the highest levels of expression in tumor tissues included CCL20, CFB, TNFSF15, GZMB, TGFBI, SPP1, CXCL2, DUSP4, IRAK2, C4BPA, IL1B, CD44, CDH5, CXCL1, IL8, IL1RAP, LEF1, S100A9, and IFITM1. The gene discussed is CD44; the disease is neoplasm.