GB2102 induced potent ADCC effects by primary human NK cells to kill FGFR2b-expressing tumor cells…preclinical studies showed that GB2102 is an anti-FGFR2b antibody with potent ADCC effect and strong FGF7 blocking but weak FGF10 inhibition. These results suggest that GB2102 is potentially a safe and effective candidate for the treatment of FGFR2b positive gastric cancer.