Therapeutic Targeting of Lewisy and Lewisb with a Novel Monoclonal Antibody 692/29

Abstract

MAbs targeting both Lewis(y) and Lewis(b) may have a therapeutic advantage over mAbs targeting just one hapten. 692/29 has a more restricted normal tissue distribution and a higher antigen threshold for killing which should reduce its toxicity compared to a Lewis(y) specific mAb. 692/29 has an ability to directly kill tumours whereas the anti-Lewis(b) mAb does not. This suggests that Lewis(y) but not Lewis(b) are functional glycans. 692/29 showed good anti-tumour responses in vivo and is a strong therapeutic candidate.