Celltrion Healthcare Inc. has signed a deal with Pinotbio Inc. to develop antibody-drug conjugates for up to 15 separate cancer targets incorporating the linker-payload platform technology Pinot-ADC. Celltrion could pay Pinotbio as much as ₩1.77 trillion (US$1.24 billion) to exercise options for all 15 targets in the collaboration. But, for starters, it will pay Pinotbio ₩1 billion up front.