There are also many TLR7 agonists attracting researchers' interest: SM-276001 and SM -360320 are selective TLR7 agonist, and SM-360320 can synergize with DNA vaccines targeting CEA colon cancer and HER2 breast cancer (Dharmapuri et al., 2009; Koga-Yamakawa et al., 2013). Here, TLR7 is linked to breast carcinoma.