Operator
Good day, and thank you for standing by. Welcome to the I.O. Vance Biotherapeutics 4th Quarter and Full Year 2025 Financial Results and Corporate Updates Commerce 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 will 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 would now like to hand the conference over to your speaker today, Sarah Pellegrino, Senior Vice President, Investor Relations and Corporate Communications at Iovance.
Please go ahead. Thank you, operator. Good morning and welcome to the Iovance webcast to to discuss our fourth quarter and full year 2025 financial results, business achievements, and corporate updates. This morning, we issued a press release that is available on our corporate website at iovance.com. This conference call will include forward-looking statements regarding iovance's goals, business focus, business plans and transactions, revenue, commercial activities, clinical trials and results, regulatory approvals and interactions, plans and strategies, research and preclinical activities, potential future applications of our technology, manufacturing capabilities, regulatory feedback and guidance, payer interactions, licenses and collaborations, cash position and expense guidance, and future updates. Forward-looking statements are subject to numerous risks and uncertainties, many of which are beyond our control, including the risks and uncertainties described from time to time in our SEC filings. Our results may differ materially from those projected during today's call. We undertake no obligation to publicly update any forward-looking statements. I will now turn the call over to Dr. Fred Both, Interim CEO and President of Iovance. Thank you, Sarah. In 2025, Iovance
delivered substantial revenue growth, achieved groundbreaking data milestones, and strengthened our financial performance. Our fourth quarter and full year 2025 results underscore our focus on value creation for patients and shareholders. We drove an antagonist adoption while streamlining costs and optimizing operations. Our operational strength resulted in a robust 30% revenue growth driven by an antagonist and our best-ever 50% margin from cost to sales in the fourth quarter for the full year well within our annual guidance range our cash runway bolstered by our ongoing cost savings initiatives now extends into the third 2025 we are well positioned in 2026 to surge toward a highly profitable and broad business and solve tumor cancer immunotherapy we plan to execute across three core pillars first continue accelerating our US commercial launch of Amtagmi and advanced melanoma the next generation products and third hope of our foundation for success first and foremost we're gaining positive update commercially with a significant potential for Amtagmi and Perleucan to reach 1 billion dollar plus US sales at peak after a considerable increase in fourth quarter demand for Amtagmi enrollment volumes in 2026 are accelerating within our broad and continuous expanding network of both academic and community authorized treatment centers or ATCs these ATCs are further reinforced by excitement surrounding the real-world experience and benefits of early treatment with Amtagme. On top of increasing demand, we are benefiting from operational improvements throughout the entire Amtagme treatment journey, from patient identification through manufacturing to infusion. On the heels of positive momentum in the fourth quarter, we expect remarkable revenue growth in 2026, driven by Amtagme. In the very near future, We will provide revenue guidance with our growth projections. Our second pillar is the massive expansion potential for our TIL platform to positively impact patients in the new indications. We are harnessing the overlap and scalability of our TIL platform, manufacturing leadership, and commercial capabilities across solid tumors. Our lead indication for lipolucil is in previously-treated, non-squamous, non-small cell lung cancer. blockbuster US market is about seven times larger than our peak US sales opportunity in advanced melanoma and our registrational patient population like Lucille has demonstrated best-in-class clinical response rates and durability this morning we announced the FDA has granted fast-track designation that validates our clinical trial data and reaffirms the substantial medical need for life Lucille in this indication we are rapidly advancing toward a supplemental biologics license application with a potential accelerated approval and launch in the second half of 2027 also excited to introduce entirely new indications for life elucil announcing the press release alongside positive early data in previously treated patients with too aggressive difficult to treat advanced soft tissue sarcomas life elucil demonstrated an unprecedented 50% confirmed response rate as Brian will highlight life elucil may offer the first durable immunotherapy option in this treatment setting. Current outcomes with standard of care are abysmal, with response rates below 5% and short median overall survival of only 9 to 10 months. Together these sarcomas impact more than 8,000 patients in the US and Europe annually, significantly increasing our market opportunity for legfalusal in the US and beyond. We're working expeditiously to initiate and complete a single-arm registrational trial to launch these sarcomas. Our robust pipeline is the backbone of immuno-oncology and multiple solid tumors today into the future as we build upon our established global leadership and define next generation approaches for tilt cell therapy. Our two clinical stage genetically engineered tilt therapies have the potential to transform the treatment paradigm across a vast number of solid tumor cancers where patients have few options. Our next generation IL-2 product may facilitate more accessible tilt therapies and we expect to provide many more updates on our pipeline in 2026 as we increase revenue optimize costs and drive efficiencies toward profitability in the fourth quarter we've reported our best ever gross margin as Corleen will discuss additionally our ongoing execution discipline and focus on financial excellence will improve current and future gross margin and further extend our cash runway within our operational excellence pillar as As Igor will highlight, manufacturing success has improved across the board. By optimizing our processes, we have infused more patients while reducing dropouts to be more efficient ahead of future launches. Importantly, we own and control all manufacturing for amtagony within our U.S.-based IAVAN Cell Therapy Center, or ICTC, as well as critical components of our supply chain. We have never been in a stronger position to execute while scaling to new heights. In 2026 we are laser focused on maximizing shareholder value, ending dilution, and supercharging future profitability. I'll now turn the call over to Coraline Roche, our Chief Financial Officer, who will provide further updates on our fourth quarter and full-year financials. Thanks Fred and
good morning everyone. iBavance finished 2025 with positive momentum as we reported approximately 30% revenue growth with 50% margin from cost of sales in the fourth quarter. Fourth quarter product revenue of 87 million dollars demonstrated meaningful growth of approximately 30 percent from the prior quarter driven by Intagsy. In our first full year of launch, total product revenue of 264 million dollars increased by 61 percent over the prior year, driven by Intagsy revenue growth of 112 percent year-over-year. That was well within our annual guidance range. We drove this impressive revenue growth in 2025 through ongoing market penetration and earlier treatment with AmtagV for more patients at an expanding number of treatment centers. The impact of growth to net adjustments remains minimal at less than 2% overall in 2025. Fourth quarter gross margin from cost of sales increased to 50% from 43% in the third quarter. This margin improvement resulted from ongoing operational optimization and disciplined use of capital. The full internalization of manufacturing operations at ICTC also provides uninterrupted supply with agility for further efficiency. Today we are capable of scale-up and expansion into new indications globally to bolster revenue without the need for significant cash position was approximately 303 million dollars at year-end driven by our commitment to commercial and clinical execution operational efficiency and financial discipline we successfully extended our cash position to fund operations into the third quarter of 2020 25 financial results reflect our commitment to flawless execution and commercial utilization, improved margin and extended cash runway that supports our path to profitability. I will now turn the call to Dan Kirby, our Chief Commercial Officer, to provide additional
context. Thank you, Corleen. In 2025, we made tremendous progress in three key areas towards our ultimate goal to establish Amtagne as the preferred treatment option for all eligible patients who deserve a one-time cell therapy with curative intent. The ATC network is continuously expanding. In the fourth quarter, new community centers as well as high-volume academic centers quarterly demand for Amtagvi, which drove. Penetrating the community market will unlock Amtagvi's tremendous potential as we expedite higher quality referrals to ATCs and begin to treat patients in the community setting. Recently launched campaigns focused on health care professionals and patients are the community market will expand as we build awareness and is to drive treatment increased penetration earlier when patients being benefit most from integrity real-world data resonating with medical oncologists with more than one in two patients responding in the second line setting and one in three patients in patients in later lines of therapy initiatives within academic ATCs are also generating positive results from earlier tissue procurement and earlier treatment before health status declines in patients with a BRAF mutation who have no current or pending options beyond targeted therapy. On the heels of our substantial fourth quarter performance into the first quarter and support our confidence in remarkable growth for 2026. Globally, AntagV has the potential to reach more than 30,000 patients annually with previously treated advanced melanoma. We have made significant strides towards expansion in AntagV approval in Canada, pending approvals in the United Kingdom, and additional progress towards resubmitting a marketing authorization application to European medicine. Beyond melanoma, we are preparing for 50,000 addressable patients for peak sales of $10 billion dollars in the U.S. alone, PC network of U.S. academic and community practices can leverage their existing TIL infrastructure for rapid adoption and non-small cell lung cancer upon approval, as well as future pipeline indication, one-year anniversary and the patient
story. Thank you, Dan. In the fourth quarter of 2025, we achieved both our largest manufacturing volume and highest commercial manufacturing success to date. Building upon this progress, all life-alusal manufacturing has transitioned to the ICTC, which is a significant milestone to optimize internal capacity utilization, improve operational excellence, reduce cost of sales, and further improve gross margin. I'll also highlight that around year-end, we successfully completed routine annual maintenance at ICTC. During this time, we minimized the impact on manufacturing volume by leveraging our contract manufacturer and increasing internal capacity surrounding the maintenance window. Importantly, ICTC has transformed into a modular facility with capability to provide uninterrupted supply and fully support anticipated global demand today and scale up for the future, even during future annual maintenance periods. I will now pass the call to Friedrich.
Thanks, Igor. Today I'll focus on our two registrational programs. First, enrollment is accelerating across a broad and expanding global footprint on our Phase 3 TILVANS 301 trial. We are investigating MTAGVI to support a potential U.S. full approval in the current labeled indication and accelerated and full approval in combination with pembrolizumab in frontline advanced melanoma. Shifting to our IOV-LUN-202 registrational trial, Lifelucil has demonstrated a best-in-class clinical profile and recently received fast-track designation from the U.S. FDA. The objective response rate was 26%, disease control rate was 72%, and median duration of response was not yet reached after more than 25 months of follow-up. We plan to present updated data at a medical meeting this year. Key opinion leaders are enthusiastic about these data, which resulted in a meaningful uptick in recent enrollment. We are excited to be on track to complete enrollment this year in support of a supplemental biologics license application. We are also pleased with the progress across the rest of our pipeline, which I am happy to discuss during the Q&A session. I now give the floor to Brian for the sarcoma update.
Thank you, Friedrich. I'm excited to share positive initial data from a pilot clinical trial in patients with previously treated advanced, undifferentiated pleomorphic sarcoma or de-differentiated liposarcoma. They have no approved immunotherapy options. Among six valuable patients, the confirmed objective response rate was an unprecedented 50%. Responses were deep and improved over time, consistent with the durability for liposarcoma in melanoma and non-small cell lung cancer. These high mortality, aggressive, soft tissue sarcomas affect more than 3,000 patients in the United States and more than 5,000 in Europe including more than 3,500 cases of advanced disease. These patients have poor fibrosis and a very high unmet medical need. Grim outcomes with second-line standard of care include response rates below 5% and median overall survival of less than one year. In summary, these extraordinary results are what I hoped and believed I would see till there be due in solid tumor cancers when I chose to leave academic medicine to join team IO bands I'm heartened by this major opportunity for patients and the future of teletherapy we look forward to commencing and advancing a single arm registrational trial as soon as possible as part of this developmental program we will also explore other subtypes of high-grade soft tissue sarcoma for patients have no approved effective therapies and urgently await better treatment out options I will now hand the call back to the operator to begin the question and answer session.
Operator
As a reminder to ask a question, please press star 11 on your telephone and wait for your name to be announced. To withdraw your question, please press star 11 again. In the interest of time, we ask that you please link yourself to one question and you may rejoin the queue. Please stand by while we compile the Q&A roster. First question comes from Andrew Tsai with Jeffries. Your line is open.
Hey, good morning. Thanks for the updates and thanks for taking my question. Maybe for the TILVANCE update that you provided, it sounds like enrollment is picking up nicely. So is it possible that we could get first-line melanoma data with mTAGV PD-1 combo data later this year? But regardless of timing, what kind of ORR and PFS do we want to see compared to PD-1 alone? Thanks.
Yeah, maybe I can take the first part of that, Andrew, and then Frederick can cover the rest of it. We do have an early interim read in this study, which is a benefit of some of the agreement we have with FDA on this. 2026 right now, it's such a large study, but we are very excited to be able to get that data read. And then, of course, if we read that data, it's a blinded study. We don't blind to do the analysis. And if we announce that, we're basically announcing that we're coming to a supplemental BLA at the same time. Frederick, do you want to talk about the ORR and PFS?
I'm here. I'm sorry about that. I needed to find my window here. Yeah, glad to do so. So I think the best idea around the benchmark for this is the pembrolizumab monotherapy monotherapy data from the Keynote O6 trial. Remember the trial design of TILVANS is a comparison of the combination of pembrol plus TIL versus pembrol monotherapy. The trial is designed with two dual primary endpoints, one of them being ORR, the other one being PSS, so ORR giving us an opportunity for an early read. The benchmark in the keynote O6 trial for ORR was about in the mid-30s, probably the true real life or are with the temporal monotherapy is probably more in the 30 and slightly below percent range. Remember we have very encouraging data on the efficacy of the combination from our COM2 to cohort 1A which showed response rates up into the 60 percent range so that's what's giving us the confidence around a successful readout for the ORR endpoint.
Questions about that? Thank you.
Operator
Our next question comes from Tyler Van Buren with TD Cowan. Your line is open.
Hey, guys. Good morning. Thanks for taking the question. Can you please elaborate on the big quarter-over-quarter jump in ProLukin revenue and the anticipated split of MTAC-B to ProLukin revenue moving forward? and if the gross margin can continue to improve quarter over quarter, despite ProLucan likely contributing to a smaller percentage of sales in subsequent quarters.
Hey, Tyler. It's Corleen. So first you talked about Q4 split. We did have all three distributors ordering in Q4, and we also took a look at the distributor. So there's a little bit of buy-in there. Not crazy. We haven't guided, so I don't have a split for you going forward. What I can tell you on the margins is, yes, we expect further improvement.
And I'll just add on to that, Tyler. We did see all three wholesalers, as Corey mentioned, ordered in Q4. We've already seen reordering happen in Q1. And moving forward, you should see, again, regular orders for a major line of business there. Other two channels will come on this year, as they did last year, but it mainly is driven by an antagonist demand.
Operator
Our next question comes from Yanin Zhu with Wells Fargo. Your line is open.
Thanks for taking our question. This is quite long for Yanin. Can you share with us how the manufacturing success rate change over time and what is the scrape cost for this quarter?
Could you clarify the last part of the question? Which cost?
Scrap costs will be in our 10K filing that will come out in 2015, but it's consistent with prior quarters. You can jump in and help. We don't release actual, it's improving, we're getting better at it, you can see the margins are growing. As Courtney mentioned, these margins are being driven, not just, they're really being driven by Antagmy, but manufacturing success is driving that improvement.
Yes, happy to. Thanks for the question, Janan. So there are really two avenues for improving success rates. One is internal, where we continue implementing improvements in manufacturing. And those are a lot that have been implemented and more are coming. And the other avenue is commercial and medical affairs teams working with ATCs and the physicians to improve tumor procurement that also results in better products. So both of those have their roots so far, and we continue working on both fronts.
Operator
Our next question comes from Soim Saeed with Mizuho. Your line is open.
Hey, guys. Thanks for the question. Maybe just one on guidance from us. So you didn't provide 26 guidance. Fred, you mentioned that you plan to provide it shortly.
Just curious, what was the logic not to provide it now?
And when we do get it, can you just give us some context? like is it going to be total revenue product is it more like a mean or
conservative guy just help us framework I would should be thinking about that
thank you yeah right now we're seeing remarkable remarkable growth in the MTagne business we do need to be sure that our projections are well supported so we're taking some time to do that it's very early in the year right now of course but as I mentioned during the prepared remarks we're going to be putting guidance out very very soon I think you'll see total product guidance guidance, we'll see some guidance potentially on quarters. We'll have to see how our, you know, how our data is supported. One thing I do want to mention is when, I know you asked about breaking out the product, ProLukin and the revenue from Amtagbee have now fallen right in the line with what we were saying a year ago, in that ProLukin generates about 17% of our revenue. If you recall, many, many calls, we talked about the 16% number based on the ratio of the price. So we are seeing that long-term balance come into play, and as Dan mentioned, ordering patterns are stabilizing here so you may not see us particularly put a number of pro lucan for one quarter over another but you can be confident in the long-term ratio of these things
Operator
thank you our next question comes from rennie benjamin with citizens your line is open
hey good morning guys thanks for taking the questions and uh congrats on on hitting the hitting the guidance um maybe just a couple questions one can you talk a little bit about you know the fourth quarter kind of acceleration how much of that came from new community atcs versus existing academic centers and as we think about going into 2026 do we do we hope that the new community atcs you know that that number will will maybe doubled as a triple can you give us a sense as to how this is going to grow um potentially this year and then i have a follow-up on the the sarcoma data.
Sure. Hey, Randy. It's Dan. Thank you very much for the question. So for Q4, our base book of business is the academic ATCs, and we saw significant growth in that segment. We did see new community ATCs come on the line, come online last year. They're coming online as well this year. We expect a learning curve as we saw with the initial academics coming online, so you'll see them slowly increase as the year goes forward. But for Q4, what we saw in the academic APCs, which is carrying over to what we're seeing in Q1, is that there are certain patient types there that we're not making into amtagmy treatment that I mentioned during the script. We have earlier procurement strategies for patients such as BRAF mutated patients, which make up a significant number of those patients inside of the academic APCs that we were not previously able to access, that our initiatives now are allowing us to access. So we expect growth to continue in the antidemic segment, and then the community ATCs having their process patients out, and they'll be ramping up as the second quarter through the end of the year and into 27. Right now, our Facebook business is strong and growing with the end. Okay, thanks for
that. And then just to follow up, you know, regarding the sarcoma data, you know, this is quite new and, as you mentioned, unprecedented. Can you, it's in six of valuable patients. Can you, A, give us a sense as to when we might see the full data and at what medical conference. And then also, can you share with us maybe any details on the depth and durability of response, right, that you're seeing here for these patients? And I guess if you can just, if I can squeeze one more in regarding the registrational study, how big do you think this study could be given this rare disease?
All right, I'll take the first part of that, and then I'll ask Brian, and we're excited to present this at the Medical Congress this year. We haven't identified that Congress yet, but obviously we really like the big ones. We'll have to see how the timing goes, but the data is available.
The second part? Yeah, so in terms of depth and durability, I think it's important to note that obviously the trial hasn't been running for years. You know, like our, in terms of, though, that you see them get, it happens right away, but we've actually watched.
Yeah, thank you for the question.
And so, you know, based upon the prior approvals in various soft tissue sarcoma subtypes recently
by FDA for the 30 patients and 60 patients, I think today we really expect very similar patient numbers for registration.
Thanks for taking the questions.
Operator
Thank you. Our next question comes from Colleen Cousy with Baird. Your line is open.
Hey, this is Nick on for Colleen. Thanks for taking our question. Just for a commentary on the recent enrollment trends for the non-small-cell lung cancer study, and can you talk about just ladies' thoughts on path to full approval in non-small-cell lung cancer? And then I have a follow-up question as well. Thanks.
Yeah, the fast-track designation that we announced today, Nick, was obviously very helpful because that provides us with a lot of benefits in working with FDA. We already, as I mentioned in the prepared remarks today, we are planning on the same timings we mentioned before with this potentially launching in 2027 this is pretty confident that this product provides great benefit for non-sponsor
lung patients thanks and then just a quick one on sarcoma just wondering if you're considering expanding any other into other subtypes of sarcoma outside
of these initial two yes and we mentioned that in both the press release and in the prepared remarks we are looking at additional so we are looking at additional, besides UPS and DDLPS, there's a number of other sarcoma subtypes that are of interest, and now that we see strong activity for tilt in the space, including approved checkpoint options for these patients, nor are there anybody interested in it.
Operator
Thank you. Our next question comes from David Dye with UBS. Your line is open.
Hey, great. Thank you for taking my questions, and congrats on the progress. I just, you know, first on the proleukin sales, we see a little uptick in fourth quarter. I'm just curious how much is coming from restocking and how much is coming from real antagonist demand? And then moving forward with proleukin, is it fair to assume that it will stabilize around that level with maturity of contributing to real demand from antagonist demand? And then I have a follow-up question.
Sure, David. So this is Dan. I'll take the question on ProLucan. We saw in ProLucan, as you recall all throughout last year, we had one first wholesaler came on in Q2, two were reordering in Q3, all three were ordered in Q4. We started to see regular demand come in. We did do a price increase back to February 1st, so there was a little bit of buy-in but not much going into the end of the year with it. The primary driver for ProLucan in Q4 was Amtagdi demand. As we look at Q1, we already have the wholesalers reordering. Two have already placed orders. We're expecting a third to order soon. And then they will continue to move forward with probalucan orders based on Antagny demand. That is our number one source of revenue. You are going to see this level out. And as we look at having Q1 price increases in the future, this will even out as you look at yearly forecasts.
Thanks for that color. And then just a follow-up on Fred's earlier comment around Antaglia being a women-deal and peak sales opportunity. Maybe just, you know, help us understand how you get there, especially how should we think about contribution of melanoma and non-sponsor lung cancer and also
subtitious sarcoma? Yeah, I think when I talk about that, David, I'm talking about continued growth in the Antaglia melanoma U.S. franchise. And we're seeing that growth. So we're only in our first year launch here and we're 264 million in revenue and again I know I know this is all this discussion about proleukin versus antagony but antagony is driving the whole thing yes we do sell a small amount of proleukin for other things but the vast majority of these numbers are coming from about 1 billion we think that's the ultimate also long at 7x so just bear that completely achievable if
you look at where we are right now we're a quarter way through that you're loading up if you look at cell therapy launches and the liquid tumor space they did have the advantage of following an allotransplant treatment modality with hematology oncology pathway we're creating a pathway with the solid tumor medical oncologist so we're standing that up now and in the initial phase we're doing over a quarter billion dollars with both products and we see that escalating in the US alone to over a billion dollars we talk about layering lung and I mentioned in the script that is a $10 billion opportunity a much larger market to go into and sarcoma we do see as being equivalent to melanoma so we do see tremendous potential to be well over 10 to 12 billion dollars in the u.s with thank you so much
Operator
thank you our next question comes from etzer deru with barclays your line is open
great thanks for taking the question um in the congrats on the quarter just uh on gross margins wondered if you could comment at all on what may be the near-term impact on the ex-US commercial launches Canada and others could have on gross margins given the improvement that you've seen to date. Thank you.
Okay, sir. So, I think I just want to make sure I'm understanding. You're asking what will the ex-US launches, what impact will they have on margins? So, all of manufacturing operations today are in-house, so we're going to have economies of scale. I think that can only help margin, right, as we grow and add in additional volume from those launches. So, and I can add on to that,
Courtney. As we look at it, manufacturing for XUS launches will be out of our Philadelphia facilities, so we do not plan on adding additional manufacturing facilities worldwide. We're already servicing those regions in our clinical trial. If you look at what's going on, we're in the process. So we do not have a lower price outside the U.S. We are going to see how this situation evolves, but we are in a good position not to have that. Great. Thanks for that color. Thank you. And our final question
Operator
comes from Afika Gunwarden with Truus. Your line is open. Hey, guys. Morning, and thanks
for taking my question today. So let me start thinking about you paying attention to the community in the U.S. and so you have ATC's there, is there going to be a material difference in the timing it takes to get a community site up and running versus, let's say, what on average it takes you to get an academic center up and running? And how should we think about that? Is there a lot of diversity in the different community settings, maybe ones who already have some sort of a cell therapy program versus those who don't. And then I have two more follow-up questions, I'll ask one of them now, can you comment on the TANDEM data and the better ORR that was seen earlier this year when that was presented. Can you use this real-world data when your MSLs are talking to physicians?
So great questions, I'll start with the first one regarding the community uptake. of the things that we do see with the community will be similar to what we saw in the academics, and that is just the relationship with the surgeon, the medical oncologist, and the cell therapy lab to get up and running for it. That should be a similar learning curve. We did have some academic sites in the clinical trials, so that was the initial wave with the mTagV launch, but we are seeing them come online. This is also balanced with the fact that they are closer to where these patients are being treated with frontline melanoma, and so we can get them to treatment quicker. So the learning curve will go up. As you see with most ATCs, it is a financial reimbursement where they want to run one or two patients first, make sure the financial reimbursement is there with the payers. We have that established and tremendous coverage with mTagV and ProLucan throughout all the payers. So once they see the first two go through, they start to accelerate patients. To the academics, when we look at getting them up and running, you can see the first couple in regards to the real-world evidence that was presented at the cell therapy meeting earlier this month actively and we are submitting that for our publication as well anything to add on to the real-world data it is tremendous
news about the earlier line treatment actually our intervention I've heard personally people very excited but not just because the data was out but also it validated what many PIs KOLs need this data and actually help get their message out to their local physicians, because the right time to treat the patient is as soon as possible, and you can see what happens, how great the responses are. They're better than we saw in our trial. They're the best in class, and this is the kind of results that we've been looking for.
Thanks, guys. And then lastly, just on the pro-lookin reordering that happened in Q1, just curious, you mentioned you had a February 1st price increase. Did any of the reordering happen after the February 1st price increase?
So they typically order before the price increase. Wholesalers operate on very low margins. So we did a 9% price increase on both products, effective February 1st of this year. So they would do the buy-in for ProLukin in advance of that price increase. We did announce it to allow for payer case rates to adjust, which happens because we're a post-price increase right now, so they were aware of the price increase pending and would buy accordingly.
Got it. Thanks for taking my questions, guys.
Operator
Thank you. This concludes the question and answer session. I would now like to turn it back to Fred Vogt for closing remarks.
Thank you again for joining the I-Advanced Biotherapeutics fourth quarter and full year 2025 conference call. We plan to provide more detail on U.S. launch growth when we introduce our full year revenue guidance in the near future. Please stay tuned to updates through 2026 on our commercial launch and pipeline as well as our cost optimization initiatives to drive towards profitability. We are motivated by the frequent stories from more and more patients who are benefiting from our pill cell therapies. As always, we're thankful to our patients, healthcare professionals, and advocacy communities, as well as our partners. I would also like to thank our exceptional IVANCE team in addition to our dedicated shareholders and covering analysts for their commitment to the mission to remain the global leader in innovating, developing, and delivering current and future generations of pill cell therapies for patients.
Operator
This concludes today's conference call.
Thank you for participating.