Complex sentence: GSK subsequently developed GSK2831781, its own depleting anti-LAG-3 antibody based on IMP731 which was humanized and was afucosylated for higher Antibody-dependent cellular cytotoxicity.
Split into simpler sentences: GSK subsequently developed GSK2831781, its own depleting anti-LAG-3 antibody based on IMP731. GSK's antibody was humanized and was afucosylated for higher Antibody-dependent cellular cytotoxicity.