Noah Rosenberg
Analyst · SVB Leerink. Joseph, your line is open
Thank you, Eric, and good afternoon. Both of our pivotal studies of sparsentan continued to advance despite the challenges presented by COVID-19. Over the last several months, we have seen incredible support and fortitude amongst the rare renal community. This is a testament to the significant unmet need that exists for FSGS and IgA nephropathy and the drive of patients, families, investigators and sites in the quest to find improved treatment options. It also speaks to the belief in sparsentan’s potential, if approved, to shape the treatment paradigm for patients living with these rare renal conditions. In keeping with these expectations, I have been very pleased with the performance of our clinical and operational teams over the last several months. Throughout this period, we have maintained close contact and collaboration with study sites, principal investigators and CRO partners, so that we are all aligned on the best ways to navigate the COVID-19 pandemic. Doing so has enabled us to better understand and address the evolving needs of patients during these challenging times and to provide ongoing support. And we have maintained a clear focus on the key priorities of patient safety, ensuring continuous drug supply, preserving data integrity and documentation in alignment with FDA and EMA guidance. We believe that the continued focus on these priorities, which we outlined on our last call, has helped us best mitigate the impact of COVID-19 on our ongoing trials thus far. We have also seen a remarkable dedication from patients and their families, investigators and site staff and the global clinical network supporting our programs, which has enabled our studies to adapt as needed. To-date, we have maintained continuous supply of investigational drug for sites and patients, and we have effectively utilized telemedicine, remote monitoring and other activities as needed to ensure patient safety remains paramount for those enrolled in DUPLEX and PROTECT. We also continue to focus on the key endpoint and safety data in our studies. To date, we have seen close adherence to study plans and scheduled visits. This has resulted in steady data collection in both studies, and we believe we are well positioned to deliver high-quality readouts. As we mentioned on our last update, global restrictions to combat the COVID-19 pandemic, not surprisingly, resulted in a reduction in recruitment activities for both studies. While we cannot control what may lie ahead with the pandemic, we are seeing encouraging signs of clinical restrictions easing throughout the global network. As a result, we have seen both screening and randomization rates for DUPLEX and PROTECT increase relative to the slowdown experienced in the spring. The Phase III DUPLEX study evaluating sparsentan in FSGS is progressing as expected during this time. As many of you will recall, in March, we achieved enrollment of the 190th patient in our DUPLEX study. The DUPLEX study protocol provides for a prespecified interim analysis to evaluate the proteinuria efficacy endpoint in the first 190 patients after 36 weeks of treatment. Successful achievement of this 36-week proteinuria endpoint is expected to serve as the basis for submission of filings for accelerated approval in the U.S. and Europe. We continue to believe that top-line data from the 36-week proteinuria analysis are achievable in the first quarter of next year. However, if based upon the pre-specified sample size reassessment, we elect to increase the number of patients to further support the confirmatory each of our endpoint and enrollment trends slow or do not continue to accelerate as a result of COVID-19, it could result in adjustment to the timing of the top-line readout. The Phase III PROTECT study evaluating sparsentan in IgA nephropathy has regained better-than-anticipated momentum and current enrollment trends are now ahead of schedule. Based upon our current trajectory, we anticipate achieving enrollment of the 280th patient this year, which would make top line data from the 36-week proteinuria analysis achievable in the second half of next year. If successful, the 36-week proteinuria analysis from the first 280 patients is expected to support accelerated approval filings in the U.S. and Europe. Similar to DUPLEX, if enrollment trends slow or do not continue to accelerate as anticipated for an extended period as a result of COVID-19, it could result in an adjustment to the timing of the top-line readout. Overall, I am very pleased with our progress and accomplishments during the initial stages of this challenging period. The continued advancement of our studies has positioned us for two high-quality readouts next year and moves us closer to our goal of ultimately delivering the first medicine indicated for FSGS and IgA nephropathy, if approved. Let me now turn the call over to Peter for the commercial update. Peter?