TLR2 (−196 to −174 bp), TLR4 (Asp299Gly and Thr399Ile), and TLR9 (T1237C and T1486C) polymorphisms and TaqI, ApaI, FokI, and BsmI polymorphisms of the VDR gene have been described previously [18,19], and their correlation with the presence of microbial DNA in the blood of CRC patients was investigated (Table 3). Here, TLR2 is linked to colorectal carcinoma.