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Talphera, Inc. Q3 F2026 Earnings Call Transcript

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Conference Call Operator
Operator
. . . . Thank you. Thank you. Welcome to the Telferra 3rd Quarter 2026 Financial Resorts Conference call. This call is being webcast live via the event stage of the investor section of Telferra's website at www.telferra.com. You may listen to a replay of this webcast by going to the investor section of Telferra's website. I would now like to turn the call over to Raffi Asadorian, Telferra's Chief Financial Officer. Please go ahead.
Raffi Asadorian
Chief Financial Officer, Talphera
Thank you for joining us on the call today.
Raffi Asadorian
Chief Financial Officer, Talphera
Today, we announced our third quarter 2026 financial results and associated business updates in a press release. With me today are Vince Angotti, our Chief Executive Officer, and Dr. Shakil Aslam, Telferra's Chief Medical Officer. Before we begin, I want to remind listeners that during this call, we will likely make forward-looking statements within the meeting of the Federal Securities Laws. These forward-looking statements involve risks and uncertainties regarding the operations and future results of TALFERA. Please refer to our press release in addition to the company's periodic, current, and annual reports filed with the Securities and Exchange Commission for a discussion of the risks associated with such forward-looking statements. These documents can also be found on our website within the investor section. I'll now hand the call over to Vince.
Vincent Angotti
Chief Executive Officer, Talphera
Thanks, Raffi. Good afternoon, and thank you to everyone joining our call today. I'll begin with an update on our nephro CRRT registrational study evaluating NIAD, our investigational nifamistat-based regional anticoagulant for use in the extracorporeal circuit during continuous renal replacement therapy, or CRRT. This study is being conducted in U.S. hospital ICUs with nephrologists as principal investigators. We recently submitted a briefing document to the FDA requesting a sprint meeting to discuss our proposed approach to closure of the study by December 31, 2026. I'll explain the rationale for our request and then provide an update on NIAID's commercial opportunity. Over the past several quarters, we've made meaningful progress in advancing the NEFRO study. Enrollment has now exceeded 75% of our planned target, as we reported last quarter. In recent months, enrollment has been unexpectedly slow due to fewer qualifying patients. Other CRRT studies have recently faced similar enrollment challenges, reflecting the difficulties of conducting clinical trials involving critically ill patients in the intensive care unit. Importantly, as a result of the slower enrollment dynamics in the industry, there is precedent for CRRT studies closing enrollment early and subsequently obtaining regulatory approval. Given these dynamics, we've taken a proactive approach to pursue the most efficient path forward for the NEFRO study. To that end, we recently submitted a sprint meeting request to the FDA seeking its agreement to conclude enrollment by December 31, 2026 with the number of available patients enrolled at that time. This would be instead of completing the originally planned target of 70 patients should we not reach that number by the end of the year. Notably, Based on our current enrollment, the study is over 80% powered for the primary endpoint. This is a meaningful consideration in evaluating the appropriate sample size for the study. It provides additional scientific support for our proposal to conclude enrollment early, particularly given the challenges associated with enrolling critically ill patients in the ICU. Above all, Our objective is to maintain the study integrity while avoiding unnecessary delays and advancing NIAID toward a potential regulatory submission. We have requested a sprint meeting, submitted the supporting briefing document, and presented our proposed approach to the FDA. Based on NIAID's breakthrough device designation, our historical interactions with the FDA and the statutory timing, we would anticipate feedback will be provided by the end of this year. Hotline data are expected within four to six weeks after enrollment is completed. Now turning to the commercial opportunity, we're increasingly encouraged by the potential market for NIAID in the United States. Following further evaluation of the CRRT market, We have increased our estimate of NIAID's peak annual U.S. sales for use during CRRT to now exceed $200 million. This is based on formal feedback from physicians via quantitative and qualitative research. The research included expected anticoagulant treatment utilization and the unique characteristics of Mefamistat. It also addressed the potential role of nifamistat in overcoming the limitations of existing anticoagulation approaches. We believe NIAID's differentiated profile, together with the significant unmet need in CRRT anticoagulation, positions it to address a substantial market opportunity if approved. Furthermore, a recent study published in the New England Journal of Medicine compared CRRT with intermittent hemodialysis in critically ill patients with acute kidney injury. The study was stopped early as it found higher mortality among patients receiving intermittent hemodialysis. This is the first study of its kind to provide clinical outcomes evidence favoring CRRT over intermittent hemodialysis in this patient population in the hospital. We believe the findings could support further growth of the overall CRRT market. In addition, as we discussed last quarter, the updated draft guidelines from KDIGO, which stands for Kidney Disease Improving Global Outcomes, elevated nifamistat as an alternative anticoagulant for CRRT when citrate cannot be used. We believe this recognition highlights Nefamistat's potential role in addressing the limitations of existing anticoagulation options. Together, these developments provide additional support for the commercial opportunity we see for NIAID, if approved. With that, I hand the call over to Raffi to update you on the financial results for the third quarter.
Raffi Asadorian
Chief Financial Officer, Talphera
Thank you, Vince. Our cash balance at September 30, 2026 was $14.2 million. We believe this cash, combined with future conditional financing tranches, will provide us sufficient capital through at least a potential NIAID PMA approval expected in 2027. Two conditional financing tranches remain, totaling approximately $16 million of additional capital. If the conditions are met, We expect fees to close around the time we release our top line data and announce completion of the study. Operating expenses or combined R&D and SG&A expenses excluding non-cash stock-based compensation expense for the third quarter of 2026 totaled $3.8 million compared to $3.3 million for the third quarter of 2025. The $0.5 million increase in cash operating expenses in the third quarter of 2026 was primarily due to higher NIAID development expenses and certain SG&A expenses related to prelaunch commercial preparation activities. As a note, we plan to file a Form S3 shelf registration statement to replace our existing Form S3 that expires on November 30, 2026.
Raffi Asadorian
Chief Financial Officer, Talphera
I'll now turn the call back to Vince.
Vincent Angotti
Chief Executive Officer, Talphera
Thank you, Raffi. We're enthusiastic about the potential of Nefamistat and the progress made with the NEFRO CRRT program. A recent submission requesting an FDA sprint meeting under the Breakthrough Devices program reflects our proactive approach to determining the most appropriate regulatory path forward. Supported by the study's current statistical power, and relevant regulatory precedent, we believe our proposal provides a sound basis for discussion with the agency. We value our ongoing collaboration with the FDA and look forward to the agency's feedback on our proposed approach. Our updated market research has increased our estimate of peak annual U.S. sales from the FAMSTAT in CRRT to more than $200 million, reinforcing our confidence in NIAID's commercial potential. We look forward to discussing this opportunity in greater detail at our investor and analyst event planned for the first quarter of 2027. We appreciate the continued support of our investors and look forward to keeping you updated on our progress. I'd like to open the line for any questions you may have. Operator?
Conference Call Operator
Operator
Thank you. Ladies and gentlemen, we will now begin the question and answer session. Should you have a question, please press star followed by the number one on your touchstone phone. You will hear a prompt that your hand has been raised. Should you wish to decline from the polling process, please press star followed by the number two. If you are using a speakerphone, please lift the handset before pressing any keys. Your first question comes from Ed Arce with West Park Capital. Please go ahead.
Raffi Asadorian
Chief Financial Officer, Talphera
Hi, good afternoon, guys.
Ed Arce
Analyst, WestPark Capital
Vincent, Raffi. Can you hear me okay? Yes. Great. Okay. I have a few questions, as you might have gathered. First, at the start, just wondering why are there fewer qualifying patients? In particular, I'm wondering about the prior trial protocol amendments that were designed to basically resolved that. And secondly, you mentioned precedence with other companies, specifically in the CRRT space. I'm wondering if you could expand on that. Which companies, when, and what were the circumstances? Thanks.
Vincent Angotti
Chief Executive Officer, Talphera
Here, Ed. I'll turn it over to Shakil as he runs first line with our PIs on the study as it relates to Just these past, it's really just the past two to three months where we've seen some lower enrollment. And then we'll answer the question after that on the precedent.
Dr. Shakil Aslam
Chief Medical Officer, Talphera
Shakil? Yes, thanks, Ed. Can you hear me? Yes, yes. Okay, good, good. Yeah, thanks, Ed, for your question. So there isn't really any single reason that we can point out. just compared with the same period in 2025, our number of patients consented and enrolled dropped by 85 to 90%. And we visited all the sites and tried to understand what's happening, but there was really no clear reason. I hate to call it just bad luck. You know, patients just happen to have some, meet some exclusionary criteria and end up not qualifying or our patients not able to get the consents from the patients. So there isn't really any clear reason that we can understand. It's just a combination of a number of things that we really feel that led to this overall significant drop in enrollment. So I wish I could give you a little bit clearer answer, but there isn't really any single reason. You're right. are protocol amendments that we have done over time that they have facilitated enrollment and qualification of the patients for this study, and that still holds true. It's just that we are at a loss to explain what exactly happened over the past two, three months.
Vincent Angotti
Chief Executive Officer, Talphera
Yeah, I think, Ed, what I'll add to that is that we've always said that the enrollment is erratic. You get heavy, strong months. You get heavier, light months. You get months in between. It just happened in this most recent stretch of call it really two and a half to three months. The pace that we had before hit one of the low stretches. And with our goal to complete by the end of this year and wanting to stay track on that goal and having now exceeded the 75% powering to now be 75% enrollment rate and exceeding over 80% powering. We want to stay in firm control of our timelines, and that's why we approached the FDA. I think your second question, Ed, was on the precedent. Dr. Aslam, do you want to handle that?
Dr. Shakil Aslam
Chief Medical Officer, Talphera
Sure. There have been at least three studies attempted in this space, and those are all based on citrate, regional anticoagulant. There was one study started by Vantiv that spun off from Baxter, and that started in around 2016. The original goal was 160 patients. And across 12 to 14 sites in the U.S., After about three years, they were only able to get 34 patients, and they decided to terminate the study because of low enrollment. They went back to the FDA and renegotiated the study and resumed the study with a smaller number of only 40 subjects. That started close to two years ago, I think in mid-2024, and the study is still ongoing, so we don't really know how the enrollment is going in that study. More importantly, there was a study conducted by Fresenius Medical also using their citrate system, and that study was expected to enroll 50 patients, and after about two and a half years, they were able to get only 31 patients, and they reached back to the FDA. and got their agreement to submit both their 510K as well as NDA because citrate is being regulated as a drug. So they were able to submit that data from those 31 subjects and they got approval of all of their products about two weeks ago, 19th of October around that time, so a little bit less than a month ago. So there are at least three studies using regional anticoagulant within this exact same patient population, essentially having a very, very tough time enrolling.
Ed Arce
Analyst, WestPark Capital
Okay. Just a clarification on the prior question and then a follow-up, if I may, before jumping back in the queue. So just to clarify on the number of patients You know, three months ago, you had reported 75% enrollment, and today, three months later, you're saying it's over 75. So am I to understand that over the last three months, you've maybe enrolled two or three patients?
Raffi Asadorian
Chief Financial Officer, Talphera
And then... Yeah, we're not giving... Go ahead, Ed, sorry.
Ed Arce
Analyst, WestPark Capital
Ed? So, yeah, sorry. And then just the final follow-up question is regarding the feedback that you expect from the FDA by year end, what contingent plan do you have in place if the FDA says no or if there's some back-and-forth negotiation that might take some degree of time? Thank you.
Vincent Angotti
Chief Executive Officer, Talphera
Yeah.
Ed Arce
Analyst, WestPark Capital
Yeah.
Vincent Angotti
Chief Executive Officer, Talphera
So I'll handle those. So, Ed, I think the first part of your question was on the number of patients. Yeah, we have enrolled patients since our last update. And our communication is we're over 75% enrolled now without giving a specific number. We're staying on the historical updates where we gave an update at 25%, 50%, 75%. And our next final update would either be with the closure of the study with the FDA agreement, we're at the 100% mark. But yes, we have enrolled patients since that time. As it relates to your question on the FDA, what if they say no? Well, we would continue on as is until we achieve the 70 patients. Now, this is with our experienced sites, and they do remain highly engaged. We'll evaluate that based on what the FDA comes back with, and we'll decide on the appropriate course based on that feedback. But our request into the FDA is that we terminate, I'm sorry, end or early closure of the enrollment at the close of the year. So between now and then, we'll continue to enroll. Just as a note, if we had the same enrollment statistics as the third quarter last year, we'd have already reached our enrollment target by, or pretty close to it by now. So it's clearly an anomaly at this particular period of the year. versus the same time last year. But again, we want to control our own fate with the timing and based off of the greater than 80% powering with our current enrollment, thought that this was the course to do. If they say no, we'll stay on course as is. And our internal forecasts just push it into the first quarter. Now, you might ask, well, look, if the additional forecast right now in your early forecast or based off your enrollment rate is only one additional quarter, Why would you go with this approach? And it's because we have such strong power in the study already. And we could wrap it up really tomorrow if we wanted to. But we're telling the FDA we'll enroll to the end of the year. And just the unpredictability of the CRT enrollment for any of the studies in this particular marketplace, we'd rather have control of that with the power we've got and bring it to conclusion. And we feel confident in the filing of the data with that potential early enrollment closure.
Raffi Asadorian
Chief Financial Officer, Talphera
Thanks so much. Appreciate it. You're welcome. Thank you.
Conference Call Operator
Operator
Thank you. The next question comes from James Molloy with Alliance Global Partners. Please go ahead.
James Molloy
Analyst, Alliance Global Partners
Hi, maybe some more on Ed's question. The answer, what if the FDA says no? But how would you handicap it if the outcome at 80% here and how does that impact your ability to hit this endpoint here at 80%? Obviously, Phil, it must be good enough. You'll be asking to stop it. And when exactly will you hear back from the FDA?
Vincent Angotti
Chief Executive Officer, Talphera
Yeah, so I'll turn the first portion of the question over to Shakil based off of our confidence in the statistical analysis and the statistical analysis plan, even with just the patients we have enrolled today. Shakil?
Dr. Shakil Aslam
Chief Medical Officer, Talphera
Right. Yes, thanks. So the study was already overpowered. With our originally planned 70 subjects, it had over 90% power to hit the primary endpoint. With the number of subjects that have gone through the trial, our power is keeping the assumptions unchanged. So we're using the same assumption that we used for the original sample size calculation. Our power is still over 80%. Given the unique trial size and the fact that we're looking at a very objective numerical endpoint based off a lab test value, we are very confident that we have more than enough patients to hit the primary endpoint. Yeah. And Vince, do you want to answer the second part or...?
Vincent Angotti
Chief Executive Officer, Talphera
Yeah, I think I'll expand a little bit more on the powering. Beyond the primary, you clearly hear Shakil's confidence based off of execution of the study at the sites and the powering based on those assumptions. The secondary endpoints are interesting because two studies recently published within the last, call it 10 years or so, the same two studies that supported the elevation of the FAMISTAT's recommendation in the Kay-Degel guidelines as an anticoagulant for CRRT had similar ends to the range that we're talking about. While our end goal is 70, Choi et al. published a study in 2015 with an end of 55. And in that study, the mean filter lifespan was significantly longer in the Nifamistat group than in the no anticoagulant group with a p-value of 0.03. I think, importantly, the filter survival rate in that particular study compared with the no anticoagulant group was a 0.001. My point being is that in the same range of N, there has been evidence of the filter life being affected as well. A second study was actually published a year before that by Lee et al. in 2014 with only 60 in the end, and in that study they found fewer clotting events and required use of fewer filters, and again, highly statistically significant. So we've got two other studies in this area looking at similar outputs, at least on the secondaries, and while there's no guarantee, it just tells you the size of these studies are in the neighborhood of where we are. The second point, I think, to your question, James, could you reiterate the second part of your question again, please?
James Molloy
Analyst, Alliance Global Partners
Well, I think you covered it rather nicely there. When exactly did you expect, hearing back from the FDA?
Vincent Angotti
Chief Executive Officer, Talphera
Oh, that was it, yeah. So it'll be before, so look, this is a SPRINT request. If you guys are familiar with SPRINT requests, They are a specialized, time-bound interactive feedback mechanism, and they're available to developers enrolled in Breakthrough Devices Program, i.e., TALFERA, and they're a 45-day clock. And so we've already submitted it would be before the end of the year, December.
Dr. Shakil Aslam
Chief Medical Officer, Talphera
Very good. And just, Vince, just one other comment about the secondary that I would like to make very quickly is that, you know, the studies that you pointed out, Vince, They were not, you know, the dose of nifamostat was not titrated to an effect. So everybody just got some weight-based dose and then they looked at the filter life and whatever happened to it. Whereas our study is very unique that we are actually targeting to a therapeutic window where we think the blood is optimally thinned. So therefore, that gives us a lot of confidence as well that it's a very high likelihood that we will hit those secondary endpoints as well.
James Molloy
Analyst, Alliance Global Partners
Maybe a quick follow-up question then for Shakil. I know that when you came in, you made some excellent changes to get the things going, and it looks like a bit of a stumbling block has come in here. What have you found most sort of surprising as you've come in on getting this trial, which historically had its challenges getting fulfilled? What have you found most surprising that seems to be the challenge to getting this trial done?
Dr. Shakil Aslam
Chief Medical Officer, Talphera
Right, I think the biggest challenge really is the unpredictability. So some of the earlier challenges we had were with the protocol and some of the sites didn't have the appropriate patient population, and we fixed those, and that's what led to kind of a pickup in enrollment. It really is unpredictability in these studies. These patients are extremely sick. Because they are so sick, protocols tend to be overly cautious and conservative, and then every site has, as is in most clinical trials, different sites have different performance. Some sites are high-performing, some sites are low-performing. All you need is a couple of high-performing sites, couple of people change or couple of people go on vacation or something else happens along those lines. It really has been so hard for us to predict how the enrollment would go. Looking at our performance data up to two, three months ago, we were very, very happy that we are on target. And just out of nowhere, we saw this very, very slowdown over the past couple of months and threw everything off. And that, I think, is the biggest challenge. The patient population is just very, very unpredictable.
James Molloy
Analyst, Alliance Global Partners
Understood. Have you noticed any change in enthusiasm from the doctors?
Dr. Shakil Aslam
Chief Medical Officer, Talphera
No, as a matter of fact, actually we see people even more enthusiastic and we hold monthly PI calls. We invite all the PIs, investigators and their teams and there's a lot of energy and a lot of desire to actually help us finish this study because they understand that there's a need and they want to have access to this and we are so close. that, you know, that's always a question. Do we see any fatigue in these sites? No. So, no, we do not see any fatigue. People are still trying to enroll patients, and they're very excited to get it over the finish line so they can have this product for their use.
Vincent Angotti
Chief Executive Officer, Talphera
Yeah. You know, Jim, it's a unique environment. With this particular study product in Z-State, I say that on their enthusiasm because You know, being under the device designation right now in order to break through, it's only a six month review. So the sooner we get the PMA filed, the sooner they get it in their hands and they're not going to be waiting like you do in many studies for maybe six months, a year to see the data. You know, we're going to have the data four to six weeks post enrollment closure. and then we're going to follow the PMA as quickly as we can. And there's a shot they could have. I mean, there's a shot that they could have it in their hands by the end of next year, actually using it on their patients. And to them, that's something tangible. And they actually comment on that to us. So fingers crossed.
James Molloy
Analyst, Alliance Global Partners
Outstanding. It would be great to be ahead of schedule. Now, I know you guys are trying your best, working the hardest. Thank you very much for taking the questions.
Raffi Asadorian
Chief Financial Officer, Talphera
Thanks, Jim.
Conference Call Operator
Operator
Thank you. The next question comes from Brandon Afox with HCU Wainwright. Please go ahead.
Brandon Folkes
Analyst, H.C. Wainwright
Hi, thanks for taking my questions. Maybe just two from me. Do you unblind the results before or during the sprint request? And if so, do you take a statistical penalty? And then secondly, is the feedback from the agency here as simple as, yes, submit on those numbers, or do not submit on that number? Is there any other scenario or feedback in between those two scenarios, and what goes into the FDA making a decision here whether it's appropriate to submit with the patients you have. Thank you.
Vincent Angotti
Chief Executive Officer, Talphera
Yeah, I'm going to turn that over to Shakil. So the blinding, the simplicity of the answer, and kind of what goes into the briefing book, et cetera.
Dr. Shakil Aslam
Chief Medical Officer, Talphera
Right. So, no, we are not... Thank you very much. and recognizing that between now and the end of the year we may have a few more patients. So it lays out the statistical power for different number of patients. In terms of briefing document, that's part of it. It's providing them with the rationale that we, based on our same assumptions, Our study currently already has over 80% power to meet the primary endpoint, so therefore there is no risk to the study. And also, the remaining subjects that we are short also provide them statistical analysis that enrollment of those subjects will not change the power of the study at this point. So that's also another thing that regulators also want to know. that if you're shortening a study, what is the risk? If you had completed the study, would your primary endpoint basically not remain significant? So that's part of our statistical package, little package that we give with the briefing document. And then all the safety. I think their number, again, there was no reason for us to power the study over 90%. This was their feedback with us that they wanted to see more, as much safety data as possible. So there's a rationale that, you know, this is not a new intervention. It's been used in other countries for 40 years. And there is actually, earlier this year, 2026, there was a publication on Nafamostat safety from over 20 years, 2004 until 2024 from Japan. and it basically outlines all the safety of the compound and there was nothing, no surprises there. So this is something that's already been well characterized in terms of safety and efficacy. So just enrolling a few more patients is not going to uncover new things that we have not seen in the literature and all these large safety databases over the past 40 years now. So that's the second part of the argument. And the third part of the argument really is that given this Kay Deagle recognition that nifamistat is actually a viable option as an anticoagulant in CRRT, and the huge unmet need and the difficulty that everybody experiences conducting clinical trials in this space that it just doesn't, it's not warranted to delay this study any further. We have enough power to show an efficacy. We have enough data to show you safety and the patients need it. And there is legitimate unmet medical need that will be met with Infamistat. So that's what goes in the briefing document. In terms of what response FDA might give, I can imagine it's anybody's guess. It could be a straight no. In that case, as Vin said, we're already continuing to enroll and we will go to our original target. Best outcome would be they say, okay, well, you know, you made your point. You can submit PMA. And then there is a whole bunch of in-betweens. And that, you know, could require some additional data as opposed to marketing commitment or there are some pathways as well where you can file for PMA. But at the same time, you keep the study open and get a few more patients just to satisfy their needs. So, So those, I think, are the three main scenarios that I can foresee. Brandon, does that answer your question?
Brandon Folkes
Analyst, H.C. Wainwright
It does. Thank you very much.
Vincent Angotti
Chief Executive Officer, Talphera
I think that important one, just for clarification and emphasis, where you said kind of anywhere in between was one where you have the opportunity to file the PMA but keep the IDE open and maybe collect some additional data that you supplement the PMA with later.
Raffi Asadorian
Chief Financial Officer, Talphera
Thanks, Brandon.
Conference Call Operator
Operator
Thank you. The next question comes from Naz Rahman with Maxim Group. Please go ahead.
Naz Rahman
Analyst, Maxim Group
Hi, everyone. I just have two questions I'll ask up front. My first one is on the filing, the final PMA filing, how many patients do you need for the safety database? And can you also include the safety data generated from overseas studies. And two, on your $200 million sales estimate, considering how difficult it has been to enroll patients in this study, what kind of gives you confidence that that's the FAMISTAT's peak sales potential and it's not a lot lower just due to difficulties in enrolling patients or enrollment criteria, et cetera? Thanks.
Vincent Angotti
Chief Executive Officer, Talphera
Yeah. Thanks, Naz. For the filing of the PMA and the safety database, we'll have Gil answer that.
Dr. Shakil Aslam
Chief Medical Officer, Talphera
Yeah, sure. Yeah, so we have shared the safety data with our previous meeting with the FDA, especially when we reduced the size from 166 down to 70 patients. We had shared the safety data from Japan. And yes, so the safety data is from ex-US use will be submitted to the FDA. And again, I think the point that we were discussing earlier that when you have clinical real-world experience over 40 years and well-characterized molecule and that data exists in public domain and so widely published, our comment to the FDA has always been that this is not a safety study. This is not the population where you would do a safety study. These patients are very sick. They have very high background adverse event rate. a very high mortality, over 50-60% mortality. So getting 20 patients, 30 patients is not going to uncover a safety signal that somehow has been missed for decades. So therefore there isn't really any fixed number of subjects needed for safety. First they thought was 166 were the patients that they wanted to see and then when we talked to them they agreed that, okay, maybe we don't need that and the 70 would be okay. I think there isn't any fixed number. I think as long as we don't go to them with far fewer patients, I think they'll be more than happy to accept it, especially when supplemented by XUS experience.
Vincent Angotti
Chief Executive Officer, Talphera
And I think, Dhanaz, the second question was on the $200 million sales estimate, the feedback that comes from that formal market research, market growth rates, the positioning of Nefamistat by the participants in the research on their use of it and their protocols moving forward. How does that align with a challenge in enrollment? And I think the key there is that it doesn't, and it doesn't because clinical trial environment really can't be translated into the real world due to the qualifying protocols, the consents required, et cetera. I think importantly, if you refer back to a call we had, I think it was earlier this year with two of our PIs, one from MUSC and the PI from University of New Mexico, they made that same point on the same question that the clinical trials in this particular area are just so difficult, they don't at all resemble real world use. And I think Interesting evidence of that is just the market as it stands today in the use of citrate. So currently, citrate has a greater than 20% market share as an off-label anticoagulant for CRRT. Yet, as Dr. Aslam communicated in this call, three citrate studies that have been unable to achieve their enrollment ends, at least to date on one of them, and two that were early closures, one in particular terminated. So there doesn't seem to be a real-world translation or clinical trial translation of enrollment into real market penetration.
Dr. Shakil Aslam
Chief Medical Officer, Talphera
Right, and that's a great point, Vincent. So yes, citrate use, according to our own surveys, is somewhere between, published literature, somewhere between 25% to 30%. and despite that, these huge sites which are primarily citrate user sites, you know, they could not enroll more than 35 patients. So, it just, the correlation between, you know, difficulty in enrolling these patients and the market opportunity, that doesn't seem to be a strong correlation.
Raffi Asadorian
Chief Financial Officer, Talphera
Got it. Thank you. Thanks, Nas.
Conference Call Operator
Operator
Thank you. There are no further questions at this time. I will now turn the call back to Vincent Angotti for closing remarks. Please go ahead.
Vincent Angotti
Chief Executive Officer, Talphera
Well, again, thank you for your interest in Telphera. We look forward to updating you on our progress. We're working hard to stay on the timelines as best as we can in everyone's best interest and manage our cash and resources moving forward and, again, above all, keeping the integrity of the study and wrapping it up as quickly as possible. Thank you for your attention to telphera, and we look forward to updating you in the future. And that concludes our call.
Conference Call Operator
Operator
Thank you. Ladies and gentlemen, this concludes today's conference call. Thank you for your participation. You may now disconnect.