Steve Aselage
Analyst · Joseph Schwartz with Leerink Partners
Thanks, Chris. Good afternoon, everyone and thank you for joining us. We made substantial progress on both the development and commercial fronts in 2016. I am very proud of our many accomplishments during the year. Most recently in the fourth quarter, we presented additional positive data from the Phase 2 DUET study of sparsentan. We've reached agreement under a scheduled protocols assessment on a Phase 3 trial for RE-024, and we grew revenue by more than 20% over the same period last year. Importantly, all of our progress in the fourth quarter and throughout the balance of 2016 puts us in a great position to deliver significant sustainable value in 2017 and the years ahead. A meaningful component of that future values inside ties to sparsentan. I know much of the focus recently has been on its regulatory pathway. So, I'll walk through our update from earlier today. To do that, let me first take a step back and set the stage for interactions with the Food and Drug Administration. As most of you know in September, we announced positive top line results from our Phase 2 DUET study of sparsentan in focal segmental glomerulosclerosis or FSGS. Those results show that the overall sparsentan treatment group achieved statistical significance in the primary efficacy end point, demonstrating a greater than twofold reduction of proteinuria compared to irbesartan after the eight week double blind treatment period. In November, we followed up with additional positive data from the DUET trial, which was presented in the late breaking oral solution at the American Society of Nephrology Kidney Week. Those results included an analysis of the trial secondary end point modified partial remission of proteinuria. This endpoint is defined as proteinuria levels of less than or equal to 1.5 grams urinary protein and a greater than 40% reduction proteinuria from baseline. Importantly, modified partial remission has been associated with long-term preservation of renal function in FSGS. Our data shows that after an eight-week period, double blind treatment period, 28.1% of patients receiving sparsentan achieved modified partial remission of proteinuria, compared to 9.4% of irbesartan-treated patients. Also notable was the change and the proportion of patients achieving modified partial remission during the open label period of the study. After 48 weeks of treatment with our sparsentan, 57.7% of patients achieved modified partial remission. In addition for the group transferring from irbesartan to sparsentan at the beginning of the open label period. The proportion of patients achieving modified partial remission increased from 9.4% to 50% after receiving sparsentan for 40 weeks. Further analysis of the safety database from the initial eight week double-blind treatment period presented at the conference showed that sparsentan was generally safe and well tolerate. So heading into our end of Phase 2 meeting with the agency in late January, we build a strong body of evidence supporting potential amount of sparsentan. I’m pleased to share that we had a very constructive and insightful interaction with the agency. We came away from the meeting with a much needed clarity on how to move sparsentan forward as expeditiously as possible. Specifically, we are pleased to have alignment on an outline of a pivotal Phase 3 trial design with the FDA agrees may demonstrates sparsentan's benefit for patients with FSGS and enabled an NDA filing. Perhaps most importantly, our path to potential following along encompasses single trial with pre-and the post-marketing elements. The pre-marketing portion of the trial will focus on an interim analysis to proteinuria, which shows a substantial treatment effect which would in turn enable an NDA filing for accelerated approval under Subpart H. A key part of our dialogue with the agency was around the ability to show treatment affect on proteinuria in the interim analysis to provide confidence that the post-marketing element of the trial would be able to verify the anticipated benefit. They provided valuable feedback on an approach to determine this threshold and in fact provide a statistical guidance along the minutes we just received. We believe our definition of modified partial remission of proteinuria will be the right bar to set for the interim analysis. As many of you know, this definition was derived in conjunction with the Neptune Consortium and based on statistical analysis of more than 200 FSGS patients in multiple data bases. This work showed the better long-term outcomes were associated with FSGS patients who reach a modified partial remission of proteinuria. Given the strong related to the from our Phase 2 direct trial, we believe it does give us a great potential to expedite sparsentan path to approval. As I mentioned, we are recently in receipt of the minutes and modeling guidance. So, we need to spend some additional time with our statistical team to complete the analysis and gain agreement with FDA on this particular piece, we are confident we’ll get there in a very near future. The post-marketing portion of the trial will subsequently monitor changes and estimated glomerular filtration rate or EGFR over a longer period of time. EGFR is widely regarded as the best overall major of kidney function. So, we are pleased that its clarity and the outline of the trial as we make made further progress on the statistical plans will be in position to give more detail on the specific trial design elements including patient numbers and observation periods. We look forward to continue our discussion with the agency to finalize protocol and initiating with trial later this year. It is worth noting that since DUET results were originally announced and presented last fall, external awareness and excitement around the sparsentan program has grown significantly in the investigator patient and advocacy communities. Channeling this excitement will be a great asset for us as we look to begin enrollment of this pivotal trial. We will also utilize our experience with the DUET study and leverage our strong and growing network of FSGS stakeholders to efficiently enroll this trial far more quickly. We have identified more than 100 sites globally with interest in participating in the trial. We estimate these sites represent more than 1,600 patients who would be potentially eligible for entry into the trial. Beyond that, we will continue to work closely with the Neptune Consortium and NephCure International Organizations to ensure we fully involved and leverage the resources of the broader nephrology community. Before moving on to other product updates, I want to briefly highlight that this path forward gives us a great opportunity to finalize our valuation of additional indications for sparsentan. This could significantly increase its overall value proposition. We will have more on that later this year as we move towards key decision points. Moving on to other late-stage program RE-024 for PKAN, the stride we made in 2016 with this program will instrumental and building excitement to the program and advancing RE-024 close to the patients. In March ACMG, was a milestone for us as we shared RE-024 data for the first time in medical congress. We followed that up with further case reports and presentations at the MDS meeting in June. This upgrades a new level of excitements among investigators and the PKAN community as a whole. More recently, in the fourth quarter, we were very gratified to reach an agreement under the spot process with FDA on a Phase 3 trial to support an NDA filing for RE-024. Today, we have gained central IRB approval for this trial and have further site preparation underway. As you know, our CMO have an unforeseen manufacturing delay which resulted in us having to move first patient dose in the trial. We believe that we have resolved the issue now have multiple processes running in parallel that give us increasing confidence will be in position to dose the first patient around the mid year. Finally, I am pleased to report that all four patients receiving RE-024 treatment is part of position initiated protocols outside the U.S. remained stable on therapy today. Regarding liquid ursodeoxycholic acid, we have a bit more formulation work to go and are more than likely looking at a filing in 2018. To round up the development discussion, I want to highlight the most recent addition to our leadership team, Dr. Bill Rote, sharing the room with us today. Bill brings the well proven abilities to lead successful research and development organizations and a scientific expertise that aligns directly with our mission of delivering life changing therapies to people living with rare diseases. He joins at an exciting time and we look forward to his leadership and our efforts to advance life therapies for patients. Lastly, I want to note that made consistent progress with growing all of our commercial products closing the year with great momentum in this regard which will health curious in and the further growth in 2017. Let, me now turn the call over to Neil to walk through our performance update. Neil?