EDITAS MEDICINE INC

We are a pioneering gene editing company dedicated to developing potentially transformative genomic medicines to treat a broad range of serious diseases. The promise of genomic medicines is supported by the advancing knowledge of the human genome and by harnessing the progress in technologies for cell therapy, gene therapy, and, most recently, gene editing. We believe this progress sets the stage for us to create medicines with the potential to have a durable benefit for patients. Our core capability in gene editing uses the technology known as CRISPR (clustered, regularly interspaced, short palindromic repeats) to allow us to create molecules that efficiently and specifically edit DNA. Our mission is to translate the promise of gene editing into a broad class of differentiated, transformational medicines for previously untreatable diseases.

We have developed a proprietary gene editing platform based on CRISPR technology and we continue to expand its capabilities. CRISPR uses a protein-RNA complex composed of an enzyme, including either Cas9 (CRISPR associated protein 9) or Cas12a (CRISPR from Prevotella and Francisella 1, also known as Cpf1), bound to a guide RNA molecule designed to recognize a particular DNA sequence. Once the complex binds to the DNA sequence it is designed to recognize, the complex makes a specific cut in the DNA. We believe we are the only human gene editing company with a platform that includes CRISPR/Cas9, CRISPR/Cas12a, engineered forms of both of these CRISPR systems, and foundational intellectual property for both of these CRISPR systems. Because of the broad nature of this platform, we believe we can create gene editing molecules for more than 95% of the human genome.

We seek to be a leader in in vivo gene editing, leveraging cutting edge gene editing technology to deliver transformative therapies that simplify the usability for patients, minimize the burdens to patients and healthcare systems, and are meaningfully differentiated from the current standards of care, while also allowing a simple, scalable manufacturing process to reduce costs to manufacture and administer the therapies.

Our approach is focused on the in vivo use of functional upregulation, which aims to increase the expression of a normal gene copy and its normal protein function to treat diseases caused by genetic mutations that eliminate or disrupt normal function. This approach edits non-coding regulatory sequences upstream and downstream of a gene and does not alter the sequence of the encoded protein, unlike other approaches, including gene knockdown, which aims to reduce the expression of one or more targeted genes by editing coding regions to knockdown a disease-causing protein, and gene correction, which aims to edit coding regions to correct a disease-causing protein. We believe this approach will allow us to address those diseases where the gene knockdown approach has limited effectiveness and to create treatments designed for most or all patients with the same disease, regardless of the specific genetic mutation causing the disease.