Codexis Presents Groundbreaking Enzymatic Synthesis Data at TIDES USA Annual Meeting

REDWOOD CITY, Calif., May 14, 2024 (GLOBE NEWSWIRE) -- Codexis, Inc. (NASDAQ: CDXS), a leading enzyme engineering company, today announced it has successfully synthesized an oligonucleotide via an enzymatic route to support RNA-based therapeutics manufacturing. Data highlighting this historic manufacturing milestone are being presented today in a Spotlight Presentation at the TIDES USA annual meeting taking place in Boston, MA, and virtually May 14 – 17, 2024.

“The data presented today by Codexis are truly unprecedented—I believe this is the first enzymatic synthesis of a full-length oligonucleotide from starting material through the attachment of a conjugation moiety. This milestone provides meaningful proof of process to industry that there are alternative manufacturing methods available as the demand for RNAi therapeutics increases. The ECO Synthesis manufacturing platform has the potential to be a scalable and sustainable way to manufacture this important and growing new class of medicines,” said John Maraganore, PhD, Founder and Former Chief Executive Officer at Alnylam Pharmaceuticals and member of Codexis’ Strategic Advisory Board.

Codexis Enzymatically Synthesizes Fully Modified RNA Oligonucleotide

During the presentation, Codexis will showcase data on the enzymatic synthesis of a known siRNA oligonucleotide that incorporates the nucleotide modifications most frequently found in approved therapeutic assets today. This includes the synthesis of siRNA compounds using the Company’s Enzyme Catalyzed Oligonucleotide (ECO) Synthesis manufacturing platform from a starter oligonucleotide to the inclusion of a conjugation moiety. This final step primes the oligonucleotide for the attachment of a customer’s proprietary targeting moiety to enable direct delivery of the therapeutic agent to the desired cells. Key data from the presentation noted that the ECO Synthesis manufacturing platform:

• Incorporated RNA bases with common modifications used in current siRNA therapeutic assets
• Achieved coupling efficiency greater than 98%
• Executed the enzymatic addition of a conjugation moiety
• Confirmed lack of notable impurities typically observed in phosphoramidite chemistry synthesis

Now that Codexis has successfully achieved this important technical milestone, the Company is continuing process development to optimize yield, purity and quality with the goal of providing customers with siRNA material of comparable or better quality to phosphoramidite chemistry for preclinical testing.