CRISPR Therapeutics AG has announced a significant collaboration with Sirius Therapeutics, involving a Collaboration, Option and License Agreement. This partnership aims to advance the research, development, manufacture, and commercialization of innovative siRNA technology targeting Factor XI. A key focus of this collaboration is the co-development and commercialization of SRSD107, a next-generation siRNA designed to inhibit human coagulation factor XI, which is implicated in pathological thrombosis. This collaboration aims to reduce thrombotic events with minimal bleeding risk. The agreement includes options for CRISPR Therapeutics to exclusively license Sirius' siRNA technology for up to two additional targets, with potential milestone payments totaling $87.5 million. Both companies have committed to exclusivity in this field, prohibiting any siRNA-based advances targeting factor XI outside of this partnership.