Jay Luly
Analyst · Barclays
Thank you, Carol. Good afternoon, everyone, and thank you for joining us today. Last quarter I walked you through the key pieces of our business and pointed out why we believe Enanta is positioned for success in 2016. Today I'm pleased to report that because of Enanta’s disciplined business approach, it is making great progress on all areas of its business operations so on target to meet our objectives for the year. Enanta is one of the few biotechs that is sustained by recurring royalty revenues and we have an advancing pipeline with clinical stage assets and a promising R&D programs in high value disease indications. Last month at the JPMorgan Conference we announced two new R&D initiatives within our core areas of virology and liver diseases. These initiatives are in hepatitis B virus and respiratory syncytial virus also known as RSV. We now have wholly-owned programs focused on four disease areas, HCV, HBV, RSV and non-alcoholic steatohepatitis also known as NASH. Our goal is to be in multiple new therapeutic areas and to have multiple therapeutic approaches within each of those areas. I will go into more details in a few minutes. To sustain this research, our business is being funded by royalties received from AbbVie on sales of HCV regimens containing our first protease inhibitor paritaprevir. Paritaprevir is part of multiple HCV combination treatment regimens now marketed globally by AbbVie in over 60 countries. Our second protease inhibitor ABT-493 is being developed as part of a 2-DAA HCV treatment that AbbVie plans to have approved in the US in 2017. To that end AbbVie recently initiated six global Phase 3 studies on this regimen in over 1,600 chronic HCV patients with genotypes 1 through 6 and expects data starting in the second half of 2016. These trials are evaluating the safety and efficacy of an all oral once-daily, ribavirin-free HCV treatment consisting of a co-formulated combination of ABT-493 and ABT-530, AbbVie’s next-gen NS5A inhibitor. Marketing approvals of this next generation regimen in major markets would make Enanta eligible for up to $80 million in commercialization milestone payments as well as additional royalties from this product. So, in summary, the collaboration with AbbVie has provided the financial resources on which Enanta can grow and we have used these resources to make great progress with our internally developed wholly-owned pipeline. Two promising candidates I’d like to highlight now are EDP-494 for HCV and EDP-305 for NASH. In anticipation of resistance arising to DAA HCV therapy that targets viral proteins, we've been developing an alternative host targeted anti-viral approach. EDP-494 has a high barrier to resistance mechanism that targets the human host protein cyclophilin which is essential for replication of HCV. The hepatitis C virus actually depends upon and uses the human cyclophilin protein to complete its replication cycle and we have developed EDP-494 as a cyclophilin binding compound that has shown in vitro that it inhibits HCV’s ability to use that protein for replication. Since the human cyclophilin protein is not part of the virus and therefore not directly subject to viral mutation, we've been pleased to find that it has consistent activity across many variants of the hepatitis C virus. Cyclophilin inhibiting mechanism of EDP-494 is designed to be part of a pan-genotypic once-daily offering to target RAVs, DAA failures and other hard to treat HCV patient populations. Last month at JPMorgan we presented excellent preclinical data demonstrating pan-genotypic activity and uniform activity of EDP-494 against many of the known RAVs across all of the DAA classes, namely NS5A, NS5B, both nuc and non-nuc and NS3 protease RAVs. Many of the drugs on the market and currently in development have some level of reduced activity when they encounter many of the known HCV mutations in existence today. However, EDP-494 suffers no loss against any of the major HCV mutations, because it’s a host target. Because of these properties, we believe the cyclophilin inhibitor could become increasingly important to treat – for the treatment of RAVs and the growing number of DAA failure patients. We recently initiated a Phase 1 study and our next step with the program is to advance into proof-of-concept studies. Initially we are going to look at GT1 which is the largest patient population as well as GT3 which is the hardest to treat genotype. After that we plan to move on to combination studies. Since nuc inhibitors are also known to enjoy a high barrier to resistance, we plan to combine our cyclophilin inhibitor with an externally developed nuc to create a combination with two high barrier mechanisms. If it would add to the effectiveness of such a combination, we also have available our NS5A inhibitor EDP-239, which has completed Phase 1 and a proof-of-concept study in HCV patients. We will aim to have a Phase 1 data later this year and to initiate a proof-of-concept study. Before then, we will present additional preclinical data on EDP-494 at EASL in April. Having successfully defined a path forward in all major HCV patient populations with our HCV franchise, we do not plan to conduct further discovery research in HCV. Instead these resources will be deployed on our newer programs. Our second most advanced wholly-owned program is for NASH and PBC, and we recently announced our development candidate EDP-305, which is an FXR agonist. NASH is reported to be the number one of cause of liver disease in western countries and is associated with diseases related to diabetes, insulin resistance, obesity and hyperlipidemia and hypertension. The progression of NASH increases the risk of cirrhosis, liver failure, and hepatocellular carcinoma, and is a large problem within the US with the prevalence estimated to be approximately 9 million to 15 million individuals. We have spent the last year generating several promising FXR agonist leads and last month we presented pre-clinical data comparing EDP-305 to OCA, which is the only clinically validated FXR agonist and the most advanced NASH candidate in development today. Data we presented at JPMorgan shows that EDP-305 is a highly selective FXR agonist and shows more potent activity in a variety of in vitro and in vivo models compared to OCA. This and other data give us confidence to move ahead with EDP-305 and we remain on track to initiate clinical development in the second half of calendar 2016. The data slides for these candidates I just discussed are available to download on the investors section of our website, under the JPMorgan Conference webcast event. Keeping with our mandate to diversify our pipeline beyond HCV, I would like to briefly highlight our recently announced new research and development initiatives in HBV and RSV. RSV is a viral lung infection that is the most common cause of bronchiolitis and pneumonia in children under one year of age in the United States. Each year 75,000 to 125,000 children in this age group are hospitalized in the US due to RSV infection. RSV also causes serious complications in immune compromised populations and the elderly. There are currently no safe and effective treatments available. Now, let’s shift to HBV. HBV is potentially a life-threatening liver infection. It is estimated that 15% to 25% of patients with chronic HBV infection will develop chronic liver diseases including cirrhosis, hepatocellular carcinoma or liver decompensation leading to more than 780,000 deaths worldwide every year. We have made significant progress in discovering, characterizing and seeking patent protections for new core inhibitors for HBV and new non-fusion inhibitors for RSV, and we expect to initiate Phase 1 clinical development in at least one of these new programs in 2017. I would like to pause here and have Paul Mellett discuss our financials for the quarter. Paul?