TAC3 and neoplasm: Meanwhile, NK3R-A1 exert more overt anti-tumor effect than that of NK3R-A2 and [MePhe7]NKB, suggesting that agonist analogues of NK3R conjugated with NGR motifs indeed have an advantage over [MePhe7]NKB on anti-tumor effects and the disulfide bridge of c(CNGRC) might not be well established, more pharmacokinetics experiments are ongoing.