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CRISPR Therapeutics Enters a Multi-Target Collaboration with Sirius Therapeutics to Develop Novel siRNA Therapies

Shots:

  • CRISPR & Sirius have partnered to co-develop & co-market SRSD107, with CRISPR having the option to nominate ~2 siRNA targets, fund related research, & retain opt-in rights for clinical development & marketing
  • As per the deal, Sirius will receive $25M cash & $70M in equity upfront, with both companies jointly developing SRSD107 under a 50-50 cost & profit-sharing structure; CRISPR to lead US marketing, while Sirius will handle Greater China
  • SRSD107 (Factor XI inhibitor) is currently being evaluated in a P-II trial for the prevention of VTE while 2 P-I trials showed over 93% reductions in FXI levels & activity, along with a twofold increase in aPTT, with effects sustained for 6mos.; data was presented at ACC 2025 & ASH 2024

Ref: CRISPR Therapeutics| Image: CRISPR & Sirius| Press Release

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