Roger Pomerantz
Analyst · Cowen and Company. Your line is now open
Thanks, Carlo, and thank you all for joining us. Seres continues to make strong progress in its efforts to develop a totally new field of medicine, using bacteria to treat disease. We are working to create a paradigm-shifting therapeutic approach based on Ecobiotic microbiome therapeutics to create new medicines for patients with serious diseases. Seres is the pioneer and leader in this new microbiome field and we have continued to advance our understanding of the underlying new science with the goal of developing innovative new therapeutics. On today’s conference call, I will provide an update on our SER-109 program for multiply recurrent C. Diff infection and will then discuss the progress we have been making with our other clinical development efforts. I'll begin with SER-109. To remind you, the SER-109 Phase 2 study enrolled 89 patients in a randomized, double-blind, placebo-controlled 24 weeks study conducted to evaluate the safety and efficacy of the product candidate in patients with multiply recurrent C. Diff infection. The previously reported interim results, including the primary eight-week study endpoint, demonstrated that the relative risk of C. Diff recurrence for the placebo population compared to the SER-109 population was not statistically significant. All SER-109 Phase 2 study patients have now completed their 24-week end of study visit and full study clinical results are expected in early 2017. In addition, we also continued to collect and review results from the Phase 2 open label extension study. After obtaining the interim SER-109 Phase 2 study results, our focus has been on completing robust analyses to more fully understand the study results, including differences compared to the prior Phase 1b study results. Given that this work remains ongoing, we believe it remains premature to discuss any preliminary findings. We do not believe it is helpful to provide piecemeal data analysis as these may not have proper scientific and medical context. We have previously discussed our broad approach to the SER-109 program analyses. Our team is evaluating CMC, clinical, microbiome and translational research data. We have finished a significant volume of this work with good progress towards completing this effort. We have carefully analyzed the available Phase 2 clinical data and conducted detailed reviews of patients from that data based on clinical site, age, C. Diff history and multiple other parameters. We have also conducted a thorough evaluation of the method used to diagnose C. Diff infection and C. Diff recurrence. We expect that the proprietary learnings arising from this work will enable us to better understand the underlying pathophysiology and clinical characteristics of C. Diff infection, and this information will inform our specific plans for further clinical development of SER-109. Our approach will be to discuss our SER-109 analyses with the FDA and obtain feedback on a proposed plan for further clinical development of the program. We expect to be able to provide a further update on SER-109 in early 2017. I will now transition to discuss the important progress we have been making with several other of our microbiome therapeutic programs. So let's begin with the SER-262 program. We have continued to make substantial progress with the execution of the SER-262 Phase1b study to prevent recurrence in patients with primary C. Diff infection, a significantly large patient population. SER-262 is manufactured by a synthetic process that is fundamentally different than that used to generate SER-109 and does not require human donor material. SER-262 contains a consortium of 12 bacterial strains in spore form rationally selected from Seres’ field-leading bacterial strain library comprising more than 14,000 strains. The strains selected for SER-262 were rationally chosen based on multiple criteria, including in silico, in vitro and in vivo modeling and the final product composition was selected from over 100 different consortia that were fully evaluated. In selecting bacterial strains for SER-262, we considered human microbiome data, the results from C. Diff preclinical efficacy studies, as well as the individual characteristics of each bacterial strain in the drug. The SER-262 Phase 1b study is a 24-week randomized, placebo-controlled dose escalation study. The study is planned to include approximately 60 patients who have experienced a first episode of C. Diff infection and where we hope to reduce the risk of recurrent infection. We have continued to advance the execution of the study and patient recruitment, and we continue to expect SER-262 top line study results in 2017. Now moving to the SER-287 program. We continue to execute our SER-287 Phase 1b study in patients with mild-to-moderate ulcerative colitis. The SER-287 study will evaluate the impact of ongoing dosing of this microbiome drug administered either daily or weekly. The study will evaluate changes in the microbiome as well as efficacy and safety measures in this chronic inflammatory disease. The rationale for evaluating microbiome therapy in this indication is supported by a number of controlled clinical studies that have demonstrated that repetitive fecal microbiota transplants, FMT, led to meaningful clinical responses in patients with ulcerative colitis. Our objective is to develop a safe and effective product which is a not immunosuppressive, targeting the substantial proportion of ulcerative colitis patients that are not well managed by currently available drugs and are reluctant to advance later-line therapies that may be associated with serious adverse events. We have continued to make excellent progress advancing the SER-287 study and we also look forward to SER-287 study results in the coming year. In addition to our clinical program, the company has made meaningful progress in advancing our earlier stage research efforts in new disease areas where microbiome therapeutics may be an important treatment modality. Much of this research is done in close collaboration with world-leading academic research institutions, and as a result we are able to advance these efforts in a focused and resource efficient manner. I'd like to highlight several of these preclinical efforts. In collaborations with investigators at Memorial Sloan Kettering, we continue to make progress on research related to our SER-155 program which is being developed to improve outcomes including bacteremias and Graft Versus Host Disease in patients receiving allogeneic hematopoietic stem cell transplantation. A separate component of our Memorial Sloan Kettering collaboration seeks to build on research indicating that a patient’s microbiome profile can meaningfully impact outcomes after immuno-oncology treatments. I will remind you that despite all the tremendous progress being made in immuno-oncology, still only a minority of patients benefit from these therapy and there is a great opportunity to improve clinical response as well as safety. We continue to believe that the microbiome therapeutics are a highly promising approach that may positively complement immuno-oncology drugs. Moving on to our intellectual property. Seres continues to strengthen its patent estate related to microbiome therapeutics. We recently obtained an additional U.S. patent covering the use of a composition of bacterial spores to treat gastrointestinal diseases associated with dysbiosis of the microbiome, and the patent provides coverage through at least 2034. This latest patent represents the fifth U.S. patent issued to the company and extends our prior composition of matter and method of use patents. Seres has continued to broaden its differentiated microbiome drug development capabilities, the company has made excellent progress towards significantly expanding its manufacturing capacity, the construction of a new facility capable of the manufacture and formulation of microbiome therapeutic candidates is near completion. Activities to support full validation of the new facility are ongoing and we expect these to be completed in the coming months. The manufacturing of microbiome therapeutic candidates requires a highly specialized approach, and we believe that our facility is unparalleled in the industry and will provide the company with a distinctive competitive advantage. I'll now pass the call to Eric to review our recent financial performance.