As Zymeworks Inc. prepares to unveil new phase I data from its lead bispecific antibody candidate at the upcoming American Society of Clinical Oncology meeting, its platform technology scored another win in the validation column. Less than two years after licensing rights to Zymeworks' Azymetric and EFECT technology platforms to develop one bispecific candidate, Daiichi Sankyo Co. Ltd. returned to the negotiating table for more.