CEO Mark McKenna told BioWorld MedTech that San Diego-based Prometheus Biosciences Inc. has "cracked the code" in inflammatory bowel disease (IBD) – progress underscored by the firm's deal with Takeda Pharmaceutical Co. Ltd., of Osaka, Japan, which brings an undisclosed up-front payment and as much as $420 million more if development, regulatory and commercial milestones are reached in three programs.