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Korro Bio, Inc.. (10/7/19). "Press Release: Korro Bio Launched to Advance Groundbreaking New Approach to Nucleic Acid Editing". Cambridge, MA.

Organisations Organisation Korro Bio Inc.
  Organisation 2 Atlas Venture (Group)
Products Product nucleic acid editing technology (DNA/RNA-editing technology)
  Product 2 venture capital
Index terms Index term Korro Bio–Atlas Venture: investment, 2018 founding investor Atlas Venture
  Index term 2 Korro Bio–New Enterprise Associates: investment, 201910 existing investor NEA
Persons Person Bermingham, Nessan (Intellia Therapeutics 201411– CEO + Co-founder)
  Person 2 Formela, Jean-François (Atlas Venture 201205 Partner joined 1993 before Schering-Plough)

Atlas Venture today announced the launch of Korro Bio, Inc., a new company created to lead the rapidly advancing field of RNA editing. The company was co-founded and incubated by Atlas, with additional funding from New Enterprise Associates, Inc. (NEA).

Gene-editing industry veterans Nessan Bermingham, Ph.D., and Andrew Fraley, Ph.D., formed Korro Bio around a new product platform to create therapies with unique and best-in-class product profiles. The foundational technology behind Korro Bio holds the promise to overcome many of the challenges associated with earlier-generation gene-editing approaches, including efficiency, selectivity and delivery.

“The field of nucleic acid editing is progressing rapidly, and new discoveries are creating the opportunity to harness endogenous human biology and develop compelling new therapies,” Dr. Bermingham said. “Korro Bio was established as the leader to watch in this space, supported by strong science, proprietary intellectual property and a team of accomplished experts to drive progress forward. We are thrilled to partner with NEA, which has been with Atlas at the forefront of evaluating and funding new gene-editing technologies.”

Korro Bio’s platform originated from pioneering research in the laboratory of company co-founder Josh Rosenthal, Ph.D., from the Marine Biological Laboratory (MBL) in Woods Hole, Mass., an affiliate of the University of Chicago. Dr. Rosenthal’s landmark discoveries in RNA editing are based on nucleotide deamination, an endogenous process for modifying RNA function that is common to all multicellular organisms. Atlas Partner and company co-founder Jean-François Formela, M.D., serves on the MBL Council, where he and Dr. Rosenthal met in 2017 and began discussions that led to the formation of Korro Bio. Korro Bio and the Rosenthal Lab have established an active collaboration to advance this foundational science.

Korro Bio’s proprietary RNA-editing approach leverages endogenous human-expressed RNA-editing enzymes in the family of adenosine deaminase acting on RNA (ADAR). The ADAR platform at Korro Bio has multiple potential advantages over existing gene editing platforms, including the ability to utilize both endogenous or exogenous effector proteins; the potential for highly efficient and allele-specific RNA editing; the use of multiple delivery technologies; and the potential for titratable, repeat dosing.

The company is prioritizing multiple therapeutic indications where safe and targeted editing of messenger RNA using its ADAR-based platform is poised to provide unique benefits over other modalities in development, including gene therapy and gene editing approaches.

About Korro Bio

Korro Bio was created to lead the field of RNA editing. The company is advancing a proprietary platform designed to selectively edit messenger RNA and recode specific codons to effect changes in protein structure and function across multiple tissues. Korro Bio was established in 2018 by Atlas Venture. For more information, visit


Lisa Raffensperger, (617) 903-8783
Ten Bridge Communications

Record changed: 2019-10-07


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