Katrine Bosley
Analyst · J.P. Morgan
Thanks, Mark. Good afternoon, everybody, and thank you for joining us for our corporate update call for the third quarter of 2017. I am joined today by several members of our executive team, including Andrew Hack, our Chief Financial Officer; Gerry Cox, our Chief Medical Officer; Charlie Albright, our Chief Scientific Officer; Vic Myer, our Chief Technology Officer; and Tim Hunt, our Senior Vice President of Corporate Affairs. This has been a solid quarter of steady progress for Editas as we're continuing to drive against our 3 strategic comparative; one, advancing our pipeline and technology leadership; two, building our business for the long term and; three, developing an outstanding organization. I'd like to service the area engineered cell therapy. This has been an incredibly exciting quarter in the field of cancer immunotherapy with the first CAR T product approval and a relief that more compelling clinical data. At Editas, we've made important progress working with Juno Therapeutic on the next-generation of engineered T cells for cancer and internally, we'd be presenting data ASH on engineered hematopoietic stem cell program to treat sickle cell disease and beta thalassemia. In our collaboration with Juno, we're combining Juno's T cell therapy with our gene-editing capability. This has the potential to substantially enhance the safety, efficacy and consistency of these medicines and it may also expand the range of cancers that can be treated. We've developed 3 essential capabilities to achieve it. One, editing genes and T cells with well over 90% efficiency; two, editing multiple genes in T cells at the same time with high efficiency and three, inserting genes in a precise manner in T cells. We've accomplished all of this in primary human T cells and this proficiency is key as this is a cell type that forms the basis of this therapy. We and Juno has shared incremental progress along the way in this field, but we're taking a moment to look at the big picture. First, we've been able to knock out a wide range of genes including the checkpoint inhibitor PD-1 with greater than 90% efficiency and in each case, we've been able to achieve efficient editing with no detected off target. Second, not only can we efficiently and specifically knockout individual gene targets, we can simultaneously knockout multiple genes. This capability significantly expands the range of product that address hard to treat malignancies with engineered T cells. Third, we made major progress on targeted genes insertion. The targeted gene insertion has the potential to allow us to put any gene precisely where we want it in the genome and with this approach, we believe we can create engineered T cells with capabilities that cannot be achieved with either gene editing or lentiviral transduction alone. Together, Juno and Editas would show data at the upcoming SITC and ASH meeting on this progress. Specifically, at SITC will show work on the intracellular protein, CBLB. This is an important intracellular signalling molecule that transmits repressing T cell signals through which can repress T cell function through CBLB to evade the immune system. We'll show, along with Juno, greater than 90% CBLB knocked down in human primary T cells using CRISPR gene editing and as a result these edited T cells kill tumor cells more efficiently, have enhanced cytokine production and have greater proliferative capacity and survival rate in response to antigen simulation. This knockdown of CBLB with CRISPR is particularly interesting since inhibiting CBLB with more conventional therapeutic modalities is very difficult. Juno and Editas will also present data at the ASH meeting in December and in these studies, we will report on the knockout of TGF-beta receptor II using CRISPR gene-editing in BCMA-specific CAR-T cell. This knockout prevented the development of the TGF-beta induced gene expression phenotype demonstrating its potential to block the well-known suppressive effects of TGF-beta in the tumor microenvironment. Taking all of this together, we believe that Juno and Editas have the leading platform to next-generation engineered T cells for cancer. Turning now to our internal work on engineered cells. We're also excited about the data Editas scientists will present at ASH from our programs to treat sickle cell disease and beta thalassemia. At ASH, we will show high levels of gene editing in primary human hematopoietic stem cells and T cells with CRISPR Cpf1. I recall the CRISPR Cpf1 is a CRISPR-editing system that is distinct from CRISPR/Cas9. Highly efficient and highly specific but has important and compelling distinctions from CRISPR/Cas9. CRISPR Cpf1 is the only CRISPR DNA-editing system, besides Cas9, that has been successfully engineered to work in eukaryotic cells and Editas is the only company with access to Cpf1 and we made significant progress with it since we integrated it into our platform nearly a year ago. The data we'll present at ASH on our HSC work show that CRISPR Cpf1 capabilities as an efficient editing system to make medicines and our confidence in Cpf1 continues to grow as a result of this and other internal work. We would also show efficient targeted insertion at the beta hemoglobin locus with CRISPR/Cas9. Targeted integration of a new beta globin gene into its native location in the genome has the potential to simultaneously eliminate production of sickle globin and replace it with a normal protein. Combined with a previously reported data showing up-regulation of fetal hemoglobin, we believe we have multiple opportunities to develop best-in-class therapies for hemoglobinopathy. Moving on to our oculus pipeline, we have made significant progress at their lead product candidate EDIT-101 to treat LCA10. This program remains on track for by mid-2018. We're building a robust data package of preclinical data to support our IND filing and first inhuman studies. Last month, the EFGCT we showed the treatment with EDIT-101 results in dose and time-dependent editing of the CEP290 gene in transgenic. CEP290 is the gene that is mutated in patients. In these studies, life carrying the human CEP290 genetic mutation, the one that is targeted by our therapy, were administered EDIT-101. We then for these animals for editing and is now to show that the editing was first rapid, second durable through the 6-month study and third, well correlated with dose and also efficiency and the editing machinery was only detected in photoreceptors, which is the target cell type for EDIT-101. The results from these now studies are consistent with the previously reported results in nonhuman primates. Overall, the integrated preclinical pharmacology of EDIT-101 is robust. First, we show that we can successfully edit from mutated CEP290 gene in human cells and restored functional person expression, we demonstrated this through the. Second, we show that we can successfully edit the target the price photoreceptors in an eye that is anatomically similar to the nonhuman primate eye. Third, we show that we can successfully edit the target cell type photoreceptors in primary human cells. We demonstrated this in human retinal study. And fourth, we show durable dose and time-dependent of predicted therapeutic editing with EDIT-101 in transgenic mice carrying the human genetic mutation that we target. We believe these results provide strong support for clinical development for EDIT-101 for the treatment of patients with LCA10. In addition to building robust data package for the IND filing we're are developing and executing our clinical plan. In this quarter, we initiated a clinical natural history study of LCA10 patients. This study will evaluate patients to assess the course of the disease and to investigate potential clinical trial endpoints. We tend to enroll approximately approximately 40 patients, ages 3 and above at multiple sites in the United States and Europe and to follow up patients for at least 1 year. Massachusetts Eye and Ear Institute is our first site for the LCA10 natural history studies and we plan to open additional sites over time. On a regulatory front, EDIT-101 received Advance Therapy Medicinal Products, or ATMP, designations from the EMA earlier this quarter and recently, the EMA granted EDIT-101 medicinal product designation. Turning now to organizational development. We continue to build our team and make key hires in several areas and I'd like just to note a couple of these. The past quarters, joined up as Vice President of Regulatory Affairs. She has over 25 years of experience across a number of therapeutic areas, including several gene therapy and ophthalmology program. We have also added senior team members in manufacturing and ophthalmology, including scientists who've worked on late stage clinical programs for retinal diseases. And now I'd like to hand the call over to Andrew Hack, our CFO, to review the financial results from the quarter.