Michael Sumner
Analyst · Piper Sandler
Thanks, Jacqui. As Jacqui highlighted, we have made significant progress so far this year towards our primary goal, which is to submit our BLA for INO-3107 in the second half of 2025. With DV testing for the CELLECTRA 5PSP device complete and nondevice- related modules of the BLA ready for submission, we have moved forward with the next phase of our regulatory plans, requesting rolling submission of our BLA from the FDA in July. Rolling submission is one of the options available to candidates like 3107 that have been granted breakthrough therapy designation. We aim to complete our BLA submission over the next several months and request a priority review. If granted, this would allow for a 6-month review period leading to a potential PDUFA date in the middle of 2026. We are now focused on finalizing the device-related sections of the BLA and updating our active IND so that we can commence enrollment for our placebo-controlled randomized confirmatory trial, which will include 100 RRP patients and be conducted at approximately 20 sites across the United States. Amidst our focus on preparing for our BLA submission, I'm also pleased to report that the FDA inspection of Inovio as clinical sponsor of the Phase I/II trial was successfully completed. This is an important step in the regulatory process that's designed to assess compliance with FDA regulations for the conduct of clinical trials. And finally, we've continued to add to the body of research, demonstrating the transformational potential of 3107. In addition to the immunology and clinical data from our Phase I/II trial, published in Nature Communications earlier this year. Data from our retrospective study, RRP-002, investigating the long-term clinical efficacy in patients treated with 3107 have just been published in a peer-reviewed journal, The Laryngoscope, which targets the key physicians who treat RRP. As a reminder, we conducted this separate retrospective trial to collect long-term efficacy data on 28 of the original 32 patients with a median follow-up of 2.8 years. We first announced the data in December of last year and later presented it at the Combined Otolaryngology Spring Meeting, otherwise known as COSM. It demonstrates that 3107 provided significant clinical benefit to RRP patients as measured by reduction in surgery. That continued to improve in almost all patients through year 2 and into year 3 following initial treatment. More specifically, in the first year, 72% of patients saw a 50% to 100% reduction in the number of surgeries after starting treatment with 3107. With no additional dosing, this number increased to 86%. In the second 12-month period or year 2, with half of the patients requiring no surgeries at all, an increase from 28% in year 1. Focusing on the mean number of surgeries per year. You can see here that they continue to drop from 4.1 surgeries in the year prior to receiving 3107 to 1.7 for year 1 to 0.9 for year 2. Although we only have partial data for year 3, the improvement seems to be holding steady and we believe this presents an opportunity to consider a longer- term treatment strategy that leverages one of the core strengths of our DNA medicine platform, which is the ability to administer additional doses to continue to drive and amplify strong T cell-based immune responses without having to worry about the impact of an anti-vector response. With that approach, we could potentially maintain complete and partial responses or extend clinical improvement, including the potential for nonresponders to mount a clinical response. Collectively, we believe this research illustrates some of the foundational strengths of our RRP program, strengths that potentially position 3107 as a new standard of care for RRP and the preferred treatment by patients and their health care providers. First, there is a significant unmet need for a therapeutic option that reduces the number of surgeries patients face to control this debilitating rare disease. Aside from posing risk for permanent vocal cord damage and burdening patients with emotional and financial costs, these surgeries don't address the underlying disease, and that's where the potential of 3107 comes in. Our treatment is designed to reduce the need for surgery for a broad range of patients by teaching their immune system to fight the human papillomavirus causing their disease. In the Nature Communications paper, we described our proposed mechanism of action, showing that 3107 was able to elicit an antigen-specific T cell response against both HPV6 and HPV11 proteins. The two strains known to cause the vast majority of RRP cases. That T cell response correlated to the reduction in surgery we observed in the trial. Looking at our RRP-001 and 002 clinical trials together, we have demonstrated that treatment with 3107 resulted in long-term surgery reduction for patients indicating that 3107, if approved, could be an effective treatment option for RRP with the potential to change the trajectory of patients' disease. And finally, we are working to initiate the confirmatory trial, which is a randomized placebo-controlled trial that takes into account both FDA feedback and patients focus on reduction in surgery and is designed for patients who have had 2 or more surgeries in the year prior to treatment initiation. The design of the trial also aligns with feedback from European regulators which is important for future development plans. With that, I'll turn it over to our Chief Commercial Officer, Steve Egge, for some additional commercial insights. Steve?