SFRP2 and colorectal carcinoma: Numerous hypermethylated genes, including BMP3, CDKN2A, FGF5, hMLH1, MGMT, NDRG4, NPY, PDX1, SDC2, SEPT9, SFRP2, TFPI2, and VIM, have been analyzed in fecal DNA for CRC early detection2,4 (Table 1).