CD44, CXCR2 and c-myc levels showed around a 1.30- to 1.80-fold increase in polyp subjects when compared to normal subjects, whereas the CXCR2 and c-myc levels were around 0.5- to 0.7-fold lower in polyp subjects when compared to those in CRC subjects. This evidence concerns the gene CXCR2 and colorectal carcinoma.