RO5323441 (TB-403) is a human IgG1 monoclonal antibody (mAb) targeting PlGF. RO5323441 inhibits the binding of human PlGF-1 or PlGF-2 to VEGFR-1 (IC50 values are 0.1 and 0.2 nM, respectively) . RO5323441 blocks PlGF-induced VEGFR-1 phosphorylation in Flt-1-transfected HEK293 cells. RO5323441 has antitumor activity[1].
