3/2/2026

speaker
Operator

Good day and thank you for standing by. Welcome to EuroGen Pharma's fourth quarter 2025 earnings call. At this time, all participants are in a listen-only mode. After the speaker's presentation, there will be a question and answer session. To ask a question during this session, you'll need to press star 1 1 on your telephone. You will then hear an automated message advising your hand is raised. To withdraw your question, please press star 1 1 again. Please be advised that today's conference is being recorded. I'd now like to hand the conference over to Vincent Perrone, Senior Director of Investor Relations. Please go ahead.

speaker
Vincent Perrone
Senior Director of Investor Relations

Thank you. Good morning, everyone, and welcome to Eurogen Pharma's full year 2025 financial results and business update conference call. Earlier this morning, we issued two press releases, the first providing an overview of the refinancing of our debt facility with Pharmacon Advisors, and the second providing an overview of our recent corporate highlights and financial results for the fourth quarter and year ended December 31st, 2025. Both releases can be accessed on the investors portion of our website at investors.eurogen.com. Joining me today are Liz Barrett, President and Chief Executive Officer, Dr. Mark Schoenberg, Chief Medical Officer, David Lin, Chief Commercial Officer, and Chris Degnan, Chief Financial Officer. On today's call, we will be making certain forward-looking statements. These may include statements regarding our ongoing commercialization activities related to Gelmido and Zesturi, our ongoing and planned clinical trials and non-clinical studies, the commercial and clinical development milestones, market and revenue opportunities, our commercialization and long-term growth strategy and expectations, as well as anticipated data, regulatory filings and decisions, the potential benefits of our products and product candidates, future R&D efforts and milestones, our corporate goals, and 2026 financial guidance, among other things. These forward-looking statements are based on current information, assumptions, and expectations that are subject to change. A description of potential risks can be found in our earnings press release and latest SEC disclosure documents. You are cautioned not to place undue reliance on these forward-looking statements, and your agenda disclaims any obligation to update these statements. I'll now turn the call over to Ms. Barrett, Chief Executive Officer.

speaker
Liz Barrett
President and Chief Executive Officer

Thanks, Vincent. Good morning, and thank you for joining us today. Our top priority is the commercial launch of Zysturi in recurrent, low-grade, intermediate-risk, non-muscle-invasive bladder cancer, a pivotal step in advancing our long-term growth strategy. As we outlined in our earnings release this morning, we are encouraged by the early 2026 trajectory following the permanent J code becoming effective January 1st. The story revenue in 2025 was $15.8 million, reflecting early launch dynamics as we worked through typical reimbursement and operational steps necessary to build the foundation for broader adoption. With the permanent J-code now in place, a key barrier to adoption has been removed, facilitating more predictable patient access. Since that milestone, as expected, we have seen a clear acceleration across key launch indicators, including the number of new and repeat prescribers, patient enrollment forms, and new patient starts. Overall, we are pleased with how the launch is unfolding in early 2026, and we are on track with the assumptions we've made around its trajectory. Zesturi addresses a large and underserved market, and based on our assumptions regarding market penetration, pricing, and physician adoption, we believe Zesturi has the potential to achieve greater than $1 billion in peak revenue. Importantly, Zesturi provides the first and only medication approved by the FDA, that can provide patients with a primary office-based therapy that can result in extended recurrence and treatment-free living. Turning to the rest of the business, Jalmito generated net product revenue of $94 million for the full year 2025, reflecting continued underlying demand growth. We are also advancing our pipeline in a disciplined manner. UGN-103, our next-generation formulation of Zisteri, demonstrated compelling complete response results in the Phase III utopia trial, consistent with the envisioned study. We remain on track to submit an NDA and recurrent low-grade intermediate-risk non-Muslim-based bladder cancer in the second half of 2026, with potential FDA approval in 2027. With a clear regulatory pathway established for UGN103 and low-grade IR non-Muslim-based bladder cancer, we are evaluating its potential in additional bladder cancer settings, including as an adjuvant in intermediate and high-risk non-Muslim-based bladder cancer as part of our broader lifecycle strategy. UGN104, our next-generation formulation of Gelmito, continues to progress through Phase III with enrollment expected to complete by the end of 2026. Finally, following the refinancing of our term loan with Pharmacon, we have further strengthened our balance sheet and enhanced our financial flexibility. Together with our existing cash on hand, this refinancing provides additional non-dilutive capital that supports our operating plan and allows us to continue executing our strategy in a disciplined manner. Importantly, our fortified balance sheet enables us to fully support the ongoing sistery launch, advance our next generation pipeline, and thoughtfully pursue lifecycle management opportunities over time. We believe this approach positions us well to allocate capital responsibly and create long-term value for patients and shareholders. I will now turn the call over to Mark for a clinical update. Mark?

speaker
Dr. Mark Schoenberg
Chief Medical Officer

Thank you, Liz. As a reminder, the Envision trial, which supported approval of Zesturi, demonstrated an approximately 80% complete response rate at three months. Importantly, among those patients who achieved a complete response, the probability of remaining event-free at 12 months was approximately 80% by Kaplan-Meier estimate, and at 24 months was approximately 72% by Kaplan-Meier estimate. In practical terms, that translates to a substantial proportion of patients expected to remain disease-free two years following treatment. Zosteri is delivered as a convenient six-dose regimen in the outpatient setting and does not require surgery or maintenance therapy. Taken together, these clinical and practical advantages support Zosteri's growing role for adults with recurrent low-grade intermediate risk and MIBC and position it competitively within an evolving treatment landscape. Beyond the clinical data, I would note that what I'm about to share reflects anecdotal feedback from early adopters and patient conversations rather than formal study outcomes. From those discussions, we are hearing that Zesturi is integrating smoothly into routine practice. Physicians have commented on the simplicity of administration and the ability to incorporate the six-dose regimen into existing patient workflows without requiring procedural changes or additional infrastructure. Several urologists have shared that following their first experience with Zesturi, the process becomes predictable and manageable within the normal flow of their clinic. We are also hearing encouraging feedback from the patient perspective. For individuals who have undergone multiple TURBT procedures, having a non-surgical treatment option delivered in the outpatient setting has been meaningful. Physicians have described patients as being receptive to, and in some cases enthusiastic about, the opportunity to avoid additional surgery under general anesthesia while maintaining disease control. Taken together, while anecdotal, this early feedback reinforces our confidence in how Zesturi's clinical durability and practical ease of use are translating into real-world adoption. Turning now to the pipeline, UGN103 is our next-generation mitomycin-based formulation for adults with recurrent low-grade intermediate-risk non-muscle-invasive bladder cancer. We are developing UGN-103 to build on the foundation established by Zesturi. UGN-103 is designed to improve upon the current formulation with a shorter manufacturing process and a more streamlined reconstitution procedure. Results from the ongoing UTOPIA phase three trial demonstrated a 77.8% complete response rate at three months. We have aligned with the FDA that the data from this trial can support an NDA submission in this indication and we are planning to submit in the second half of 2026, which would position us for potential FDA approval in 2027. As Liz mentioned, we are evaluating lifecycle management and pipeline expansion opportunities for UGN103 beyond low-grade intermediate-risk disease. This includes exploration of its potential in high-grade NMIBC, as well as an adjuvant setting for intermediate-risk patients. We anticipate holding Type C meetings with the FDA in the second or third quarter to align on the development plans for these programs. We expect both studies to be randomized, controlled, and event-driven trials. Subject to regulatory alignment with the FDA, we intend to initiate the high-grade NMIBC study in the second half of 2026. We look forward to providing additional details as those plans are finalized. Our next-generation program for low-grade upper-track urothelial cancer continues to progress in Phase III, with enrollment expected to complete by the end of 2026. UGN501 is our investigational next-generation oncolytic virus in development for high-risk non-muscle invasive bladder cancer. IND-enabling studies are well underway, and our goal is to submit the IND and initiate a Phase I clinical trial in 2026. While our initial focus remains bladder cancer, we see potential to explore this platform more broadly beyond the genitourinary system. Overall, we believe the recent progress made across our programs positions us well over the coming year with multiple clinical and regulatory milestones ahead. I will now turn the call over to David for the commercial update.

speaker
David Lin
Chief Commercial Officer

Thank you, Mark. I want to reinforce what Liz shared earlier. We are very encouraged by how the Zisteri launch is developing. and it continues in line with our expectations. The commercial execution we're seeing reflects the significant groundwork laid throughout 2025, as we are beginning to see that preparation translate into broader engagement across the urology community. From FDA approval through year-end 2025, our focus was on intentionally building the commercial foundation required for long-term success. We expanded and trained the commercial organization establish reimbursement pathways, and work closely with urology practices to support operational readiness ahead of broader adoption. Zesturi generated $1.8 million in net product revenue in Q3 and $14 million in Q4, bringing full-year 2025 revenue to $15.8 million. As discussed, these early quarters reflected the foundational launch phase during the miscellaneous JCODE period. As of December 31st, 2025, we had 838 activated sites of care, with 102 unique prescribers and 32 repeat prescribers. Payer execution continued to support access, with over 95% of covered lives having open access to Zesturi by year end. The permanent product-specific J-code became effective on January 1st, 2026, and since that time, we have seen a noticeable step-up in adoption and utilization trends through January and February. It's still early days. However, the directional indicators are consistent with our expectations that reimbursement clarity would support broader uptake. Importantly, we are not seeing any material friction points in reimbursement, logistics, or treatment delivery. Just as important, we are beginning to see greater engagement from community-based urologists. As expected, many community practices were more cautious prior to the permanent J-code going into effect, and we are now seeing growing participation as reimbursement processes normalize and confidence builds. We believe this shift toward increased community adoption will be an important contributor to growth as we move through 2026. We are also tracking the conversion timeline from patient enrollment form, or PEF, to dosing. We've previously said that conversion cycle was in the 45 to 60 day range, reflecting the onboarding and workflow integration typical of a new product launch. Over the course of 2026, we expect conversion time to narrow as sites gain familiarity and operational efficiencies improve, ultimately moving closer to the two to three week timeframe we see today with Jalmito. As we continue through 2026, Our commercial organization is scaled to support the 8,500 urologists in our target universe who treat approximately 90% of the low-grade intermediate-risk non-muscle-invasive bladder cancer patients in the U.S. Our focus remains on disciplined execution, expanding peer-to-peer education, supporting appropriate patient identification, and ensuring practices have the tools they need as adoption continues to build in a measured and sustainable way. We have also begun to increase our investment in patient awareness initiatives to complement our physician-focused efforts, ensuring that patients are informed about their treatment options. Turning to Gelmito, it generated net product revenue of $94 million in 2025. While growth has moderated for a more mature product, we continue to drive consistent engagement and steady demand across the treating community, based in part on compelling, durable, complete response data. Importantly, the expansion of our commercial organization in support of Zesturi also enhances our overall urology presence, which we believe can provide incremental support to the gel mito franchise over time. I will now hand it over to Chris to discuss financials.

speaker
Chris Degnan
Chief Financial Officer

Thank you, David. Revenues were $109.8 million for the year ended December 31st, 2025, compared with $90.4 million in 2024. The 21% year-over-year increase was driven by the commercial launch of Zestori in 2025, as well as increased sales of Jomio. Research and development expenses for the year ended December 31st, 2025 were $67.1 million, compared with $57.1 million in 2024. The year-over-year increase was primarily driven by higher manufacturing costs for Zestori, which are recognized as R&D expenses prior to receiving FDA approval. Costs associated with the phase three trials for UGN 103 and UGN 104, and the acquisition of UGN 501, partially offset by lower clinical trial costs and regulatory expenses in connection with the story. Selling, general, and administrative expenses were $155.1 million for the full year ended December 31st, 2025, compared to $121.2 million from the full year of 2024. The year-over-year increase in SG&A expenses was primarily driven by Zestoria commercial activities, including the Salesforce expansion following Zestoria approval in 2025, as well as an increase in overall commercial operation costs. Financing expense related to the prepaid forward obligation to RTW Investments was $18.5 million for the year end of December 31st, 2025, compared with $23.4 million in the prior year. The decrease was driven primarily by changes in underlying assumptions for re-measuring the effective interest rate. Interest expense on our prior $125 million term loan facility with Farm Account Advisors was $15.3 million in 2025, compared with $12.5 million in 2024. The increase was primarily attributed to the interest expense on the $25 million third tranche of the loan that was funded in September 2024. We reported a net loss of $153.5 million, or $3.19 per basic and diluted share, for the year ended December 31, 2025, compared with a net loss of $126.9 million or $2.96 per basic and diluted share in 2024. As of December 31st, 2025, our cash, cash equivalents and marketable securities total $120.5 million. As Liz mentioned, today we announced that we have entered into a second amended and restated loan agreement with Pharmacon Advisors providing for a senior secured term loan facility of up to $250 million. consisting of two tranches. The initial tranche of $200 million is funded at closing and would use to refinance our existing $125 million term loan facility and provide additional non-dilutive capital. The agreement also includes a second tranche of $50 million, which may be drawn at our discretion through June 30, 2027, subject to customary conditions. All outstanding loans with Pharmacon will accrue interest at a fixed rate of 8.25% and will be repaid with four equal quarterly principal payments beginning in the first quarter of 2030. The facility includes customary prepayment provisions, including applicable premiums and makeable amounts. We believe this refinancing enhances our financial flexibility and provides additional non-dilutive capital to support continued investment into the story launch, lifecycle management initiative, and advancement of our pipeline while maintaining a disciplined approach to capital allocation. Finally, turning to guidance, we are providing 2026 guidance for Jalmito net product revenue and total company operating expenses. Given that Zestoria remains in the early stages of its launch, we are not providing formal sales guidance for 2026 at this time. For the full year 2026, Net product revenues for Domeido are expected to be in the range of $97 to $101 million. This implies a year-over-year growth rate of approximately 3% to 7% over 2025. Full-year 2026 operating expenses are expected to be in the range of $240 to $250 million, including non-cash share-based compensation expense of $20 to $24 million. The anticipated year-over-year increase in company operating expenses is primarily driven by three factors. An increase in non-cash share-based compensation expense attributable to a higher stock price at the 2026 grant date and an overall increase in employee grants, the annualization of costs associated with our Salesforce expansion following the story approval in 2025, and our lifecycle management plans for UGM-103. That concludes our prepared remarks. We will now open up the call to questions. Operator?

speaker
Operator

As a reminder, if you'd like to ask a question at this time, please press star 11 on your telephone and wait for your name to be announced. To withdraw your question, please press star 11 again. Our first question comes from Kelsey Goodwin with Piper Sandler.

speaker
Kelsey Goodwin
Analyst, Piper Sandler

Hey, good morning and thanks for taking our questions and congrats on the quarter. Maybe first, I know you're not providing anything on the patient enrollment forms, but do you have any color or commentary you can provide there and maybe a way we could benchmark it to what you're seeing with Jelmite or what you saw in their launch? And then in terms of the potential guidance for Zosteri, I guess, when might you be able to provide that or would that be maybe a 2027 thing? Thank you.

speaker
Liz Barrett
President and Chief Executive Officer

Yeah, I'll ask Chris to answer the second question, and then David can answer the first question.

speaker
Chris Degnan
Chief Financial Officer

Yeah, so Kelsey, thanks for the question. You know, it is early in the launch, as we said, and there are certain variables that it can affect the near-term uptake. So, you know, once we get the better visibility to steady state demand, I would say at least two quarters post the permanent JCO, then we could consider providing formal guidance for Zestori.

speaker
Liz Barrett
President and Chief Executive Officer

Yeah, David, I'll pass.

speaker
David Lin
Chief Commercial Officer

Hi, Kelsey. It's David. With regard to patient enrollments, as expected, since the permanent J code became effective at the beginning of the year, we are seeing step up in a number of key indicators, so PEST being one of them. And that's really in large part due to the fact that we have new writers as well as growing repeat writers. Thanks for the question.

speaker
Liz Barrett
President and Chief Executive Officer

Hey, Kelsey, just to put a little bit of a finer point on that, to your point about how's it doing versus John Mito, I will tell you that, you know, and cautiously tell you that all of our indicators in the month of February surpassed John Mito. So, if you think about patient enrollment forms, you think about new patient starts and doses, we are now tracking ahead of where John Mito is. take that into consideration when you think about the number for the year that we've said we're comfortable with where guidance is. And if you think about it versus where our MITO is, I think that will show you that we are on track for, you know, to hit that number. So just want to, that's a little bit more color. I know everybody's wanting specific numbers, but I think that's the best. we're going to be able to do, but I think that should give everybody confidence in kind of where we are right now.

speaker
Kelsey Goodwin
Analyst, Piper Sandler

That's great.

speaker
Operator

Thank you so much. Our next question comes from Raghuram Selvaraju with HC Wainwright.

speaker
Raghuram Selvaraju
Analyst, HC Wainwright

Thanks so much for taking my questions and congratulations on all the progress this quarter. I just wanted to drill down on the prescribers and repeat prescribers for a second. So two questions here. Firstly, among the repeat prescribers, can you comment on the trend in this number and if you're seeing it steadily ticking up month over month, quarter over quarter? And secondly, with respect to those prescribers who have deployed the story but are not yet repeat prescribers, have you received any feedback from this group indicating how likely they would be to become repeat prescribers? And are there any specific considerations that are emerging that will prevent them from becoming repeat prescribers?

speaker
David Lin
Chief Commercial Officer

Yeah, David. Hi there. Thanks for the question. In terms of repeat prescribers, we are seeing steady growth in, I'll just comment, in both new and repeat prescribers. So to your point around repeat prescribers, what we see with them is that once they have a very positive experience with a patient, and the workflow becomes incorporated into their practice, and they have the confidence around reimbursement, which is now reinforced with the effectiveness of a permanent J-code, that's really what enables them to become repeat prescribers. With many of the new prescribers, what they're really waiting to see is they typically want to make sure that they have a clean claim submission and they get reimbursed. And as their practices become more familiar with the medicine, implementing it into their workflows, they are very likely to become repeat prescribers. And so what we've heard from the prescriber base is that it's a steady growth in, as they become more familiar, they tackle more patients.

speaker
Raghuram Selvaraju
Analyst, HC Wainwright

Very helpful. And then just quickly on life cycle management. I was wondering if you have a sense, assuming timely submission of UGN-103, approximately when you might potentially be in position to introduce it into the market in the United States. And secondly, if you could comment at all at this juncture on what you expect the dynamics to be between UGN 103 and Zasturi, and how you're thinking about 103 relative to Zasturi from a commercial positioning standpoint. Thank you.

speaker
Liz Barrett
President and Chief Executive Officer

Yeah, so the plan would be to not introduce it into the market until after we get a permanent J code. So what we've discussed is that we would file this year. You'll get approval in 27. And so then it would likely be the beginning of 28 when we would be in a position to launch it. And what we would do is the goal would be to transition to UGM 103 as quickly as possible. But, you know, because there's going to be a lot of confusion, so we have to make sure that we handle that very quickly. So to avoid any of that, and then at the point in time where we feel confident that we're not going to lose, you know, physicians and patients with Zosteri, and that they'll switch to 103, then we'll make that switch. So we will be very purposeful about that, and then pull Zosteri as quickly as possible. So there won't be a lot of the, to your point, the dynamic of 103 and Zesturi being on the market at the same time. That will happen, obviously. There will be a transition period, but we want to make that transition period as quick as possible.

speaker
Unknown

Thank you.

speaker
Operator

Our next question comes from Michael Schmidt with Guggenheim.

speaker
Michael Schmidt
Analyst, Guggenheim Partners

Oh, hey, good morning. Thanks for taking my questions. On Zsuzduri, as we, you know, could you just provide some more comment on current use, especially as we think about, you know, what types of patients are leveraging Zsuzduri at this point in time? What percentage of patients are, you know, considered unfit for T or BT surgery as opposed to patients that are fit and are just seeking an alternative to surgery? And how do you expect that use pattern to shift over the rest of this year. So that's question number one. And then question number two, I think you did mention some potential lifecycle management opportunities, especially for UGN 103, including evaluation as an achievement therapy. And I'm just curious, based on your market research, how well does the concept of achievement therapy in general resonate with patients As opposed to, you know, just using therapy as a replacement of surgery, you know, instead of as an add-on. How do you think about that? Thank you so much.

speaker
Liz Barrett
President and Chief Executive Officer

Yeah, sure. David can answer the first, and then Mark, please be prepared to answer the question around life cycle management.

speaker
David Lin
Chief Commercial Officer

Hey, Michael. This is David. In terms of your question, I think the first thing I'll say is that physician customers have been very enthusiastic about the compelling data surrounding Zesturi. as we've talked about and as we've gained more experience in the market, that complete response and durability of response really does resonate and they do see it as a paradigm change. In terms of the patient types that they are giving Zesturi, while not a precise science, I will say they're using as we expected. So the first would be people who recur early. Second would be those who have frequent recurrences. And third, those who they feel just shouldn't go through another surgery. So we're hearing patients across the board, and that's what gives us a lot of confidence that the value proposition is getting across to them. That's supported by the fact that we have a permanent J code now in 2026, has opened up utilization, as we discussed, in more community practices, and it's really consistent with how we thought about the launch at this point in time.

speaker
Dr. Mark Schoenberg
Chief Medical Officer

Michael, thanks. And with respect to the life cycle management question, The expansion of the use of 103 in the adjuvant setting would be in the setting of treating patients where we currently believe TURBT would be obligatory. So that would be in patients with a new diagnosis where a patient would have had a trans-rethrosection to make a diagnosis, likely for new onset intermediate risk disease as well as new onset high-grade disease where primary therapy would not be the standard of care, but adjuvant therapy would. So we think there would be enthusiasm for it in both settings, and it would expand markedly the opportunities for patients to take advantage of the benefits of 103 in both settings. So adjuvant for new diagnosis, intermediate risk disease, as well as adjuvant therapy for patients with high risk disease.

speaker
Liz Barrett
President and Chief Executive Officer

Thanks so much. And just to answer the, you know, add a little bit more color on the patient dynamics, but that, you know, from the adjuvants of how it's being used today, we don't really know. Obviously, we don't track that. We do know some physicians today are using it in the adjuvant setting for the recurrence, but we don't promote that, right, because our data is clearly without surgery. And I think that that's very important because The idea of not having to go through surgery, while physicians may not love that idea, some of them patients really do. And the reality of it is that the 80% complete response and the durability that we've shown, keep in mind that that is without surgery. And so we do want to, while we do recognize that some physicians may be less comfortable and they'll do it in the adjuvant setting even today, we do want ultimately for them to use it without surgery because we think that's in the best interest of the patient, frankly. And we think that that also differentiates us versus all of our competitors. So anybody coming in, you know, as they're coming in, they're in the adjuvant setting. And right now, we're the only ones that are showing it as a primary. And I think that that's going to be really important as we go forward.

speaker
Operator

Our next question comes from Leland Gershel with Oppenheimer.

speaker
Leland Gershel
Analyst, Oppenheimer

Good morning and I'm glad to hear the, uh, the, the favorable update. Thanks for taking our questions. Uh, we have two, one, uh, just on the commercial side with the story, um, as you develop that, that market, uh, wanted to ask what you're seeing in terms of the, uh, community versus, um, academic centers that are, that are, uh, kind of buying into it. Is it different than how Jalmaito proceeded in its early launch?

speaker
David Lin
Chief Commercial Officer

Hey, Leland. So your question around channel mix, it is a little bit different. I think as you saw with Jalmaito is very heavily concentrated with hospitals, particularly in the beginning. What we saw in 2025 with Zesturi is that we saw about 60% utilization in a hospital type setting. And obviously with the effectiveness of a permanent J code, we expected that that would actually bring on more community users. And since the beginning of the year, we have started to see that happen. And as we sit here at the end of February, I can tell you that the mix of settings has started to pivot toward the community setting. So we're looking at about 50-50 right now for Zesturi. And what we do continue to, we would expect to see is that as these community settings come on board, they get experience with using the product, filing claims and getting reimbursed, we will continue to see continued growth in the community setting over time.

speaker
Leland Gershel
Analyst, Oppenheimer

Okay, great. And then development question, you'd mentioned looking at Zesturi in the adjuvant setting and high risk. Just wondering if you could share more detail on that and perhaps other expansion opportunities in high-risk? Could you be looking at this story in combination with others? And then the adjuvant setting, would that be in BCG-naive with TURPs, or would there be an opportunity in BCG unresponsive? Just curious if you can share any more detail there. Thank you.

speaker
Dr. Mark Schoenberg
Chief Medical Officer

Yeah, Mark? Yeah, thank you, Leland. So I think there are a lot of opportunities in high-risk disease. One area we're particularly interested in is in the BCG unresponsive capillary high-grade disease, where we think there is a real opportunity. So we are in the process of finalizing a protocol to launch an adjuvant trial in high-risk disease. And obviously, we'll be happy to share details when that protocol is finalized. But we do think that Zosteri all by itself, or in this case, it would be 103, as a single agent would be very useful for this particular population, and that's where we would start our investigation. Liz may want to comment further on the possibility of combining it with other agents, however.

speaker
Liz Barrett
President and Chief Executive Officer

Yeah. I mean, I think we've definitely considered that, but it would be good. We definitely want to see how we do with just monotherapy, you know, post-TRBT, but absolutely open to and have been looking at potential combinations. So, we'll do that as well. I mean, it's in it makes sense for us to be in multiple areas and multiple patient populations. And so our ability to quickly launch these incremental clinical studies and broaden the patient utilization is a core strategy for us. And that's how we will ensure long-term sustainable growth is by really being able to hit all of the patient populations in non-Muslim-based bladder cancer. There's no reason why it shouldn't work across the board, and that's our intention.

speaker
Chris Degnan
Chief Financial Officer

Thank you. It's very helpful.

speaker
Operator

Our next question comes from Paul Choi with Goldman Sachs.

speaker
Paul Choi
Analyst, Goldman Sachs

Hi. Good morning, and thank you for taking our questions. My first question is, Liz, can you maybe offer a framework about how you're thinking about the level of investment in promoting the Zestari launch, given that you eventually plan to transition to UGN 103 in the future, and just sort of what level of investment is needed here to generate a positive return on all the investment you're putting into the product currently and in the past? And then my second question is, I think in the past you've indicated that you thought you had enough capital to sustain yourself to profitability. And so I guess, how are you thinking about prioritizing capital allocation with this new loan on the forward here? And do you feel like now your capital position is finally where you need it to be to get to profitability? Thank you for taking our questions.

speaker
Liz Barrett
President and Chief Executive Officer

I'll answer the first, and then I'll ask Chris to talk about the longer-term sustainability of the financials in our investment. I think where we are with investing in Zesturi versus 103, we're investing in Zesturi like 103 doesn't exist. We are doing everything we can to ensure the maximum opportunity, and we will continue to do that. I'll give you An example, we just had a new person join the commercial team that was in another company and said, hey, there's one thing that I really appreciate, and that is we have the resources. So we have resourced this launch like it needs to be resourced. And there is nothing, no stone that we're leaving unturned, including engaging in patients. So while we're not doing broad-based DTC, we clearly are trying to reach patients in a more targeted manner. So I would say, again, absolutely fulfilling every aspect of the launch. So we're not looking at it as this is just temporary, and in 2028, we're going to have one. We're not looking at it like that. We're looking at it because what we build for Zesturi will be the foundation for UGM 103. So we're going after it aggressively, and again, not leaving any stone unturned for this. commercial opportunity. So I feel really good about where we are from that standpoint, and we'll continue to do that. And I'll just ask Chris to sort of comment on sort of the expenses and where we're going from here.

speaker
Chris Degnan
Chief Financial Officer

Yeah, and thanks, Paul, for the question. So as we said before, I mean, the path to profitability is really tied to the story launch and the uptake, and we're on track there. The purpose of the refinance really accomplished two things for us. One, it meaningfully reduced our cost of capital. So the prior loan had a 7.5% plus three months so far variable rate, so call it 12% interest rate. And we reduced that now down to 8.25%. And then two, it gave us financial flexibility. So one, it extended the repayment period. It was going to start second quarter next year, now starts first quarter of 2030, and did bring in additional non-dilutive capital to further build out the balance sheet. But to be clear, we'll remain disciplined in our approach to capital allocation, balancing path to profitability, and then also making sure that we're investing in a long-term growth strategy.

speaker
Liz Barrett
President and Chief Executive Officer

Yeah, and I'll just add that the addition of the $50 million or $75 million does not change what we've said before around path to profitability, right? It gives us a cushion and gives us more flexibility, right? But we didn't do that because we needed that money to get to profitability, but it definitely gives us flexibility. So just to be really clear, we haven't changed our commentary around passive profitability.

speaker
Operator

As a reminder, if you'd like to ask a question at this time, please press star 11 on your touch-tone phone. Our next question comes from Aiden Usinov with Lattenburg.

speaker
Aiden Usinov
Analyst, Lattenburg

Hi, good morning. Thanks for taking our questions. I've got a couple, one on the story, one on UGN 501. For the story, I appreciate confirming the long-term guidance for the story. I just wanted to better understand maybe if you could provide some color in terms of when do you think these peak sales would occur? Is it 2035, 2040? And what would happen after you reach those peak sales? And for UGN501, the question is, I just wanted to better understand the RT-GL technology and how that would help UGN501 oncolytic virus to be differentiated from other oncolytic viruses and whether you'd need a primer to activate the virus. Thank you so much.

speaker
Liz Barrett
President and Chief Executive Officer

Yeah, thanks. Chris, I'll ask Chris to answer the first question, and then we can turn it over to Mark to answer around 501.

speaker
Chris Degnan
Chief Financial Officer

Okay, and thanks. So, I mean, path of peak or time to peak, you know, I would assume roughly four years to peak. So, now that we have the J code, a four-year ramp to peak is reasonable.

speaker
Liz Barrett
President and Chief Executive Officer

And Mark, you want to just talk about 501 with and without the gel?

speaker
Dr. Mark Schoenberg
Chief Medical Officer

Sure. Thank you. So as many who are listening know, our current plan to launch a phase one study in 501, which we will do this year in high-grade disease, is an aqueous-based preparation that is preceded by the use of an activating agent that you were alluding to, DDM. We are in the process of studying how long dwell time or longer dwell time could potentiate the efficacy of the virus in the setting in which we will initially explore its use, which is obviously intravascular therapy for bladder cancer. So we are in the process of doing that currently. Theoretically, and again, this is speculation currently, but we are looking into this right now, we believe there may be an advantage to a longer dwell time, which may obviate the need for additional interventions prior to introduction of the virus. that that's currently under investigation and we'll obviously share details when we have more to share.

speaker
Aiden Usinov
Analyst, Lattenburg

Thank you. Thanks so much. Very helpful. Thank you.

speaker
Operator

That concludes today's question and answer session. I'd like to turn the call back to Liz Barrett for closing remarks.

speaker
Liz Barrett
President and Chief Executive Officer

So just want to say thank you to everybody for the support as you heard today. Very excited about how things are going with the launch. We gave information that hopefully gives you the confidence that where we are, we're starting out the year very strong. So we obviously will look forward to sharing all of the information from the Q1 and the Q1 earnings. Suffice it to say that we're excited about where we are. We think we're in a great position to hit our goals and hit all of the milestones that we expected on Sisturi, which I might be doing well as well, and then want to focus in the back half of the year around expansion into other areas. So I think from a company perspective, we feel like we're in a great position. We're in a great financial position. Things are going really well with the launch. we're executing against our pipeline and expanding so that we actually are in a position where we see the future being long-term sustainable growth and being able to do that. So again, thank you for everybody for hanging in there for all these years. We're finally, I think, at the place where we've all been working toward and appreciate the support. So we'll be keeping everybody up to date and look forward to seeing some of you guys at the conference tomorrow. So thanks a lot. You can disconnect now, Operator.

speaker
Operator

This concludes today's conference call. Thank you for participating.

speaker
Liz Barrett
President and Chief Executive Officer

You may now disconnect and have a great day.

Disclaimer

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