Edgewise Therapeutics, Inc. (EWTX) Earnings Call Transcript & Summary
April 2, 2025
Earnings Call Speaker Segments
Operator
operatorHello, and welcome to Edgewise Therapeutics Investor Event. My name is John, and I will be the operator for today's call. I would now like to pass the call over to Edgewise's Chief Financial Officer, Mike Carruthers. So please go ahead when you're ready.
R. Carruthers
executiveThank you, and good morning, everyone. Welcome to the Edgewise Therapeutics conference call to discuss our top line data of the EDG-7500 from the Phase II CIRRUS-HCM 28-day trial in individuals with hypertrophic cardiomyopathy. This morning, we issued a press release, which outlines these results. You can access the press release as well as the slides that we will be presenting today by going to the Investors and News section of our website at edgewisetx.com. A replay of the event will also be available as a webcast on our website. Joining me today are Dr. Kevin Koch, CEO; Dr. Robert Blaustein, Chief Development Officer; Dr. Behrad Derakhshan, Chief Operating Officer; and Dr. Alan Russell, our Chief Scientific Officer. A special guests, we have 2 CIRRUS-HCM clinical investigators joining us, Dr. Ahmad Masri, Director of Hypertrophic Cardiomyopathy Center at the Oregon Health & Science University; and Dr. Anjali Owens, Medical Director at the Center for Inherited Cardiac Disease and Associate Professor of Medicine at the University of Pennsylvania. Before we begin, I'd like to remind you that some of our statements made during this call today are forward-looking statements and are subject to a number of risks and uncertainties. These may cause our actual results to differ materially, including those described in our reports filed with the SEC. You are cautioned not to place any undue reliance on these forward-looking statements, and Edgewise disclaims any obligation to update statements. I'll now turn the call over to Kevin.
Kevin Koch
executiveThanks, Mike, and thanks to all of you today for joining us. I'm Kevin Koch, President and CEO of Edgewise Therapeutics. I'll introduce the company and provide a broad overview of our programs. Ahmad Masri, the Director of the Hypertrophic Cardiomyopathy Center at the Oregon School of Medicine, will then present an overview of the unmet needs in hypertrophic cardiomyopathy. Anjali Owens, a cardiovascular fellow at the Hospital of the University of Pennsylvania, will then go over the new data describing Edgewise 7500 in the 28-day study of CIRRUS. Then Rob Blaustein, Edgewise's Chief Development Officer, will speak to the design of our Part D study for CIRRUS, and I'll finish up with closing comments and questions. Edgewise Therapeutics is a leading muscle disease pharmaceutical company. Our deep expertise in muscle physiology is driving a new generation of novel therapeutics for the treatment of muscular dystrophies and serious cardiac conditions. I think we've got some really compelling data to provide you today on Edgewise 7500 for the treatment of obstructive and nonobstructive hypertrophic cardiomyopathy. We anticipate filing an IND in the second quarter for a second-generation 7500 analog targeting heart failure and other diseases of diastolic dysfunction. We have also a research program on a novel muscle-targeted mechanism for the treatment of obesity and cardiometabolic disease. Our second major asset, sevasemten, is a first-in-class fast type 2 myosin inhibitor for the treatment of Becker and Duchenne muscular dystrophy. We reported in December that we had positive results in our CANYON study. CANYON is the largest placebo-controlled study in a targeted Becker population ever completed. We had positive statistically significant top line results regarding muscle damage biomarker endpoints and showed strong positive trends regarding functional endpoints. Overall, we showed disease stabilization in the treated group with the placebo group declining as predicted by multiple recent natural history studies. We also reported that the GRAND CANYON pivotal study for Becker completed enrollment with 175 patients. We are meeting with the FDA this quarter to discuss options and timing for the approval of this agent in a population with no approved therapies or treatment options. Now let's turn to HCM. HCM is the most common genetic cardiovascular disease. While the diagnosis can be made at any age, especially now with familiar genetic testing, HCM is most commonly identified when patients are in their 30s and 40s. HCM patients displayed both hypercontractility, coupled with pathologic diastolic dysfunction characterized by the inability to relax the ventricle to fully fill with blood. Current treatments for HCM, including surgical and pharmacologic approaches have key limitations that leave substantial gaps in the treatment of HCM patients. These include the limited efficacy of drug therapies, including beta blockers, calcium channel blockers and most recently cardiac myosin inhibitors or CMIs. There are no approved therapies for the treatment of nonobstructive HCM. Cardiac myosin inhibitor efficacy is limited by the mechanism of action, which is associated with reductions in left ventricular ejection fraction requiring monitoring and dose adjustment driving a black box warning for mavacamten, the first-generation CMI. This limits the clinician's ability to easily and safely prescribe mavacamten because of concerns about the risk of development of heart failure in patients. Additionally, the black box warning mandates multiple echo measures to ensure that patients do not go below a threshold ejection fraction of 50%. Edgewise 7500 is a novel sarcomere modulator for both obstructive and nonobstructive HCM. Preclinical and early clinical studies in both normal healthy volunteers and obstructive HCM patients demonstrate that 7500 can potently reduce gradients, a measure of cardiac obstruction and uncouple these reductions from changes in left ventricular ejection fraction. No drug concentration relationship was observed on ejection fraction reduction with Edgewise 7500. Additionally, NT-proBNP, a potential measure of diastolic dysfunction and heart failure was rapidly decreased in a dose-responsive manner. I'll turn the presentation to Dr. Masri to discuss in greater depth the unmet medical need in HCM.
Ahmad Masri
attendeeThank you, Kevin. Happy to be here to discuss the unmet need in hypertrophic cardiomyopathy. So when we talk about the unmet need, one has to realize what the continuum in HCM is. Myocyte hypertrophy, interstitial fibrosis and ear dysfunction do underlie the continuum of HCM. We sometimes think of purely obstructive patients and purely non-obstructive patients. But the reality is that the majority of the patients are somewhere in the middle because they have shared characteristics of both of these, in a way, distinct but interconnected pathophysiology at the same time. And as such, we really shouldn't continue in the future to think about these as distinct entities. They do have a lot of shared characteristics, and that's what underlies a lot of the unmet need in hypertrophic cardiomyopathy. When we think of HCM disease complexity, it really requires thorough and thoughtful evaluation. That's why it's still a complicated disease even though it's been described and it's been around for many, many decades. And despite our mature understanding of the disease, it still does present a complex problem to many of our physicians and many of the individuals who evaluate this disease. And so we do have numerous tools at our hand that allow us to evaluate and phenotype patients. But ultimately, the most important thing to think about is how is the patient feeling, how is the condition affecting the patient life and how is it affecting their quality of life. When we think about the burden of hypertrophic cardiomyopathy, it is substantial. If you look at different studies, you do have some controversial findings here and there in terms of some studies telling us that patients are doing great and the unmet need is small. But if you look at bigger studies, which included many patients from many centers and try to look at the lifetime burden of hypertrophic cardiomyopathy as well as when the disease onset started and how people did over time, then the burden is really substantial. These are data from the SHaRe registry, thousands of patients. And these were curated outcomes. And if you look at an overall composite of serious outcomes such as ventricular arrhythmias, heart failure and atrial fibrillation, you can see how burdensome the disease is. Take an example of heart failure composite. If you develop hypertrophic cardiomyopathy below 40 years of age, 40 to 60 or so, your risk of having cumulative incidents from birth or heart failure goes all the way up to 60%, 70%. The same thing applies for atrial fibrillation and much less so for ventricular arrhythmias, but still very burdensome. And if you try to compare that to how the U.S. population is, even though these comparisons are limited, patients with HCM do suffer from increased incidence and rate of mortality compared to age-matched populations as well. So when we think about the unmet need, we also should think about what are the goals of therapy in hypertrophic cardiomyopathy. We do want rapid and consistent relief of symptoms. We want improvement in quality of life for our patients, improvement in their exercise capacity. And we do want to achieve favorable remodeling because we think if we achieve favorable remodeling, we will, in turn, have less complications and overall better outcomes. It's hard to study hard outcomes in hypertrophic cardiomyopathy, but this is a chronic morbid disabling disease. And that is why we really focus on how patients are feeling and our ability to improve their exercise capacity. When we think about the unmet need when it comes in line with these goals of therapies, one is nonobstructive HCM. There are no approved therapies for nonobstructive HCM. And right now, if I meet a patient in the clinic, really what we offer them is clinical trials because the different therapies that are recommended in this space are not very effective at this stage. And in obstructive HCM, there still remains significant unmet need as well. You do have patients who don't respond to our current therapies. You have patients who have mild obstruction, but severe symptoms, and those typically are driven not by the obstruction. They are typically driven by vestibular dysfunction, by LV stiffness, by other factors that require to be addressed, not just the obstruction itself. And then vestibular dysfunction underlie a lot of the disease pathophysiology as we spoke about before. And then finally, the monitoring burden. While a lot of the medications and a lot of the procedures that we have done over the years allow you to treat patients and achieve a reasonable response, you are still with newer therapies such as CMIs and commercially available mavacamten, for example, to us, is that you do have monitoring burden and you have to continue to monitor for systolic dysfunction. And this is not just related to initiation of a drug, you have to continue to do that throughout the follow-up for the patient as well. And so in terms of the ultimate principles of therapy here is to improve quality of life based on the ACC/AHA guidelines. We always want to have objective data to support that we are achieving other objective markers that support that the quality of life improvement is related to what we are doing in terms of an intervention. But that's the ultimate goal. When you have patients come back in the clinic, the ultimate goal is how are you feeling now compared to where you were feeling before you were starting on the therapy. And so KCCQ, for example, is an important metric and measure now becoming a very standardized measure in our different clinical trials. It's a validated tool in heart failure patients and in hypertrophic cardiomyopathy nowadays. It's also a prognostic tool. The degree of reduction in KCCQ is associated with outcomes in heart failure with reduced ejection fraction as well as with preserved ejection fraction. And then beyond the directionality of how KCCQ essentially is, it is a robust measure of the magnitude of benefit. And we have seen this being reproducible across many different disease areas, not just hypertrophic cardiomyopathy. And now I'm happy to hand it over to Dr. Owens.
Anjali Owens
attendeeHello, and thank you for the introduction, Dr. Masri. I'm looking forward to sharing the results of the CIRRUS-HCM trial, Part B in obstructive HCM and Part C in nonobstructive HCM patients with you today. As a reminder, we previously reported results of the single-dose study in obstructive HCM patients, which showed a 67% reduction in LVOT gradients at rest, 55% reduction in LVOT gradients with Valsalva without a reduction in LV ejection fraction. We also observed a dose-dependent reduction in NT-proBNP, starting as early as 8 hours after a single dose with a 30% to 60% reduction after 24 hours in the 100-milligram and 200-milligram dose cohorts, respectively. The focus of today's call will be the results of the 28-day fixed daily dosing in patients with obstructive HCM in Part B and patients with nonobstructive HCM in Part C. This study included adults with HCM identified by the site PI who had LVEF greater than 60% at baseline by site read echo. For this study, doses of 50 milligrams and 100 milligrams once daily were tested. Let's move on to the baseline patient characteristics. As you can see from the table here, the nonobstructive HCM patients were slightly younger than the obstructive patients. Both Parts B and C enrolled a majority of female patients and between 35% and 50% of patients were NYHA Class III, so severely affected. Baseline gradients in the obstructive group were severe and Valsalva gradients were even higher than what we have seen in trials of cardiac myosin inhibitors. There were 6% to 17% of patients at baseline who had a history of atrial fibrillation. Now that we've entered the era of cardiac myosin inhibition being used as part of standard of care for obstructive HCM with FDA-approved mavacamten and the number of patients on the next-in-class agent, aficamten as part of long-term open-label studies, we are starting to see a shift in the baseline characteristics of patients who choose to enroll in clinical trials of novel agents such as EDG-7500. It's certainly a bit more challenging to enroll patients when there is an option to go straight to an FDA-approved targeted therapy. As a reminder, we prespecified the efficacy evaluable population for an LVOT gradient as patients in Part B who received at least 1 dose of 7500 and had a baseline LVOT gradient greater than or equal to 30 millimeters of mercury measured at rest and greater than or equal to 50 millimeters of mercury measured during Valsalva. This was determined by echo with adequate acoustic window that was necessary for inclusion. So let's start with the Part B data. When we looked at gradient data to determine the efficacy evaluable population, we found that 2 patients on the 50-milligram dose and 3 patients on the 100-milligram dose were removed because they didn't meet the grading criteria. This results in a total of 17 patients who were counted in the safety population and 12 patients in the efficacy population. The next slide breaks down the gradient changes seen in patients at rest and with Valsalva. The patients who received 50 milligrams are represented by the lighter blue line and those who received 100 milligrams by the darker blue. Resting gradients are on the top panel and Valsalva gradients on the bottom. The resting gradient in this efficacy evaluable group was in the 70s at baseline, which is quite severe and greater than 100 millimeters of mercury Valsalva. These are core lab reads, and they are higher than the 3 Phase III trials of cardiac myosin inhibitors that we have seen published thus far. Despite these very high gradients, we observed robust reductions, including a 71% decrease from baseline in the 100-milligram dose cohort with over 80% of patients achieving a resting gradient less than 30 millimeters of mercury and a Valsalva gradient less than 50 millimeters of mercury. Of note, we also saw gradient reduction at the 50-milligram dose. As this was a Phase II dose-finding study, we did not optimize individual patient dosing. This will be studied in Part D and Phase III. Also of note, the gradient measurements were taken at trough for this study and not at Cmax, which is distinct from what other development programs have done. With regard to the gradient reduction in the safety evaluable population, we saw greater than 80% of patients at the 100-milligram dose achieved an LVOT gradient less than 30 at rest and less than 50 with Valsalva. Now again, in this population, some patients had lower gradients to start with. Next, I'm showing results of NT-proBNP changes. NT-proBNP is a key marker of myocardial stretch and heart failure in HCM patients, and it is associated with poor outcomes long term. The magnitude of response that we saw was similar to what we observed with a single dose, which was measured at trough in that single-dose study. The response that we observed was dose-dependent with a robust reduction of 62% in the 100-milligram cohort with over half of patients on that dose achieving a completely normalized NT-proBNP within just 4 weeks of treatment. We know from prior published data from the CMI trial that improvements in NT-proBNP strongly correlate to improvements in peak VO2, a measure of functional status objectively. So this is very encouraging data. Interestingly, when you couple with the marked improvement in biomarkers, we also observed an increase in E prime velocity that was dose responsive. E prime improved by approximately 20% from baseline in the 100-milligram dose cohort, suggesting improved diastolic function potentially as a reason for the improved biomarkers. To expand upon this improvement in E prime, we looked at other markers of diastolic function, including E over E prime and left atrial volume index. In particular, the E prime septal velocity improved in a significant percentage of patients who had abnormal baseline values with almost half of patients normalizing E prime after 4 weeks of treatment. This improvement to me ties into EDG-7500's mechanism of action and selectively improving diastolic function without effects on systolic function. Next, I'm showing changes in quality of life as measured by the KCCQ score. For the overall summary score, 89% of patients receiving the 100-milligram dose had improvement in KCCQ-OSS with a mean increase of 23 points. This is very encouraging data even with the limitation of an open-label trial, and the response was dose-dependent from 50 to 100 milligrams. If you take the mean change in KCCQ-OSS in the context of changes that we've seen in CMI trials, this remains an impressive change. In the RCTs that I have shown on this slide, the placebo groups tended to have a change of 5 to 7 points. And the placebo-adjusted change in KCCQ was typically in the range of 7 to 10 points. We are seeing with EDG-7500 data at 28 days, a significantly larger change, which, of course, is a good first step, albeit in an open-label design. If you dive deeper into the breakdown of the 89% of patients on the 100-milligram dose who said they felt better, this is driven by 78% of patients who reported a very large improvement in KCCQ defined as greater than or equal to 20 points. Given that in our HCM patients, hard cardiovascular outcomes are fortunately relatively rare, we are really focused on improving feel and function for both clinical and regulatory endpoints. So this KCCQ data is quite important. Next, we looked at NYHA functional class, where we saw that 78% of patients who received the 100-milligram dose had greater than or equal to 1 functional class improvement with approximately 67% of patients achieving Class I. This data, again, is in the context of an open-label study design but is encouraging as we move into Phase III. Next, let's discuss data from Part C, the patients with nonobstructive HCM. This is a breakdown of the nonobstructive cohort, which was comprised of 12 patients who were evaluated as the safety population and 8 patients who completed all 4 weeks of treatment. 6 patients at the 50-milligram dose and 2 at the 100-milligram dose. These 8 patients were evaluated for LVEF, E prime, KCCQ and NT-proBNP. Similar to the obstructive HCM patients, we observed a robust reduction in NT-proBNP in the nonobstructive group on the order of a 50% decrease from baseline value. Notably, this change occurs early. It's present by the first set of follow-up labs at just 1 week of treatment, and that benefit is sustained in those who completed the 4 weeks. Changes in E prime as a marker of improved diastolic function were also observed. This, again, was a small number of patients, but an encouraging signal after only 4 weeks of treatment. In some of the trials of cardiac myosin inhibitors, we had to wait a longer duration to see benefits in diastolic function. I want to spend a little bit of time on this next slide, which shows changes in KCCQ, OSS and CSS in the nonobstructive patients who received 50 and 100 milligrams. The magnitude of change was quite large and encouraging. The range from 9 to 22-point improvement, and we saw that even at the 50-milligram dose level, albeit in an open-label design. By comparison with prior CMI trials, we did not see a change in KCCQ in the double-blind, placebo-controlled Phase II MAVERICK trial of mavacamten, and we saw an approximately 10-point improvement in the REDWOOD Cohort 4 study of open-label aficamten. Again, in this patient population of nonobstructive HCM, where we do not have a biomarker of elevated LVOT gradient to target as a marker of efficacy, it's really important to find other measures of efficacy, including patient-reported outcomes and also measures of function. Now that we have discussed efficacy, which looks quite promising, let's turn our attention to safety, starting with ejection fraction. On the left side of this slide is the change in LVEF in the obstructive HCM cohort. And you can see that there is a negligible change in LVEF on the order of approximately 2% from baseline to week 4 by core lab read. And importantly, there was no correlation seen between plasma concentration and LVEF change. Baseline LVEF in this obstructive HCM cohort was more similar to the VALOR patients who had LVEF in the high 60s as opposed to the EXPLORER and SEQUOIA patients who had LVEF in the low 70s at baseline. On the right side is the change in LVEF in the non-obstructive HCM cohort. And you can see there was really no change at all. In fact, I'll call your attention to the table at the bottom of the slide, where there were 4 patients who by core lab read had LVEF less than the 60% threshold that was required for site red inclusion. And even in those patients who had a lower starting EF, some as low as the low 50s, there was no change in systolic function after dosing with EDG-7500. There were also no patients in the study who experienced an LVEF less than 50%. And this was at doses that show promising efficacy. These are still small numbers, but very encouraging results. If we are able to have an agent where we can uncouple the risk of dropping LVEF with the desire or need to increase dose, we can perhaps focus on titrating dose based on feel and function without needing serial echoes for safety. Here's a slide with a table summarizing the treatment-emergent adverse events that occurred during the study. A special interest are any cardiac-related TEAEs. We saw approximately 28% of patients who reported transient dizziness. We've also seen dizziness in trials of patients on cardiac myosin inhibitors, where it's typically transient after. Starting the dose or dose increase. 4 patients in the study had atrial fibrillation and 3 patients had palpitation. Atrial fibrillation, we know is part of the disease of HCM. We see in population-based studies anywhere from 25% to 30% of patients who have AFib. And certainly, those percentages grow as the patients are sicker and more symptomatic. A deeper examination of the 4 patients who had newly diagnosed AFib was conducted post hoc, 3 were in the obstructive group and 1 in the nonobstructive group. One obstructive patient who received the 100-milligram dose was found to have significant mitral regurgitation and an enlarge left atrium typical of obstructive HCM. One patient who received the 50-milligram dose was found to have severe mitral annular calcification with intrinsic valve disease, mild to moderate mitral stenosis and did not meet wall thickness criteria diagnostic of HCM by an external independent echo reviewer. Another patient who received the 100-milligram dose also had hypertension, thyroid disease, COPD and diabetes and did not meet wall thickness criteria diagnostic of HCM by an external independent echo reviewer. The final patient who had nonobstructive HCM received the 100-milligram dose and had at baseline less atrial volume index greater than 50 and less atrial size of 6 centimeters. None of the patients who developed AFib had an LVEF of less than 50%. This next slide has detailed data on AFib rates across Phase II and III studies from the cardiac myosin inhibitor class of medications. This is a lot of data on this slide, and you may want to take some time after to review it, but we see varying rates by study design, including dosing algorithm, time of follow-up and by agent. In the CIRRUS study as a Phase II dose-finding study, we do not have a placebo comparator arm. In addition, a dosing strategy typical of a Phase II trial design was employed with fixed dosing for 28 days and dose escalation by cohort. In general, we have seen a trend towards lower AFib rates when moving from Phase II to Phase III trials in the CMI class. Perhaps this is due to refining inclusion criteria or due to a slower individualized dose escalation strategy, which may minimize the acute hemodynamic effects of drugs that we know can modulate sarcomere function and are rather potent. Certainly, we'll gather more data in this regard as development plans for EDG-7500 progress. In summary, EDG-7500 is emerging as a potentially exciting therapeutic option for both obstructive and nonobstructive HCM patients. The potential for EDG-7500 to improve LVOT gradients, NT-proBNP, markers of diastolic function, KCCQ and NYHA importantly, without reduction in LVEF could allow treatment of a broader population of HCM patients without the need for serial safety echoes. EDG-7500 appears to be generally well tolerated across a broad exposure range. and refinement of patient selection criteria, slower dose escalation strategy and individualized dose optimization may serve to minimize risk of adverse events and deepen clinical benefit heading into a larger placebo-controlled trial. I'd now like to turn it over to Dr. Blaustein to walk through the future development plans.
Robert Blaustein
executiveThank you, Dr. Owens. Part B of our Phase II CIRRUS study will build on the prior encouraging data from Part B and C that you've just seen. The goal of Part D is to optimize the safety and efficacy of EDG-7500 using an intrapatient dose escalation strategy. During the trial, we will be acquiring a comprehensive data set that includes echocardiography indices, feel and function measures and biomarkers that we will carefully analyze at the end of the study to help determine the dose optimization strategy that we will eventually employ in Phase III. As illustrated in the slide, our approach for Part D for both nonobstructive HCM patients and obstructive HCM patients is to further explore the minimally effective dose by having all participants start at 25 milligrams a day. After 2 weeks, the dose will be increased in all participants to 50 milligrams for another 2 weeks. At this point, they will undergo testing by echocardiography, measurement of NT-proBNP and assessment of feel and function by KCCQ and New York Heart Association class, and this is represented by the arrow at week 4 in the figure. Based on the extent of reduction in their left ventricular outflow tract gradient and potentially taking into account improvements in NT-proBNP and KCCQ score, a decision will be made for those with obstructive HCM to either increase their dose to 100 milligrams for 4 weeks or if they have achieved sufficient benefit from the 50-milligram dose, they can remain on that dose for the remainder of the study. Those with nonobstructive HCM will advance to the 100-milligram dose unless they have clearly benefited from the 50-milligram dose based on their reduction in NT-proBNP and improvement in KCCQ score. After 4 weeks, participants will again undergo the above testing as indicated by the arrow at week 8. And for those currently on 100 milligrams a day, a determination will be made regarding the need to increase their dose to up to 200 milligrams a day. Now we feel confident that we can evaluate doses as high as 200 milligrams if needed, given our observation that achieving substantial efficacy does not come at the expense of any meaningful reduction in left ventricular ejection fraction. We plan to leverage learnings from the CMI trials and will modify the inclusion and exclusion criteria for Part D accordingly. Prior to entry into the study, all participants will undergo careful screening by the investigator and sponsor to ensure that they meet these entry criteria and are appropriate for inclusion in the trial. I'll conclude by pointing out that we remain committed to providing continued access to EDG-7500 after 12 weeks of treatment. And therefore, all participants will have the opportunity to remain on their optimized dose by enrolling in a long-term extension. I'll now hand it back over to Kevin for some concluding remarks.
Kevin Koch
executiveThanks, Rob. That was a great presentation. I'd like to summarize our differentiated profile of EDG-7500 for the treatment of hypertrophic cardiomyopathy. Based on our observations to date, we've identified a molecule that does not require the reduction of ejection fraction to provide disease amelioration as measured by gradient reduction in biomarkers such as NT-proBNP. As shown in this slide, we saw no meaningful relationship between concentration of the drug relative to ejection fraction changes, no patients dropping their ejection fraction outside of the range defined by the placebo group in gray dots on the left portion of the slide of plus or minus 12%. Additionally, no patients dropped below the 50% ejection fraction threshold for heart failure. Turning to the comparison with aficamten Phase II data, we believe our data clearly differentiates our mechanism from the cardiac myosin inhibitors, which requires drops in ejection fraction to demonstrate clinical benefit. As you can see on this slide, aficamten has multiple measures falling below 20% on ejection fraction outside of the placebo range. Even more impressive, we were pleased to see significant benefit on feel and function measures -- change in New York Heart Association scores where several patients became asymptomatic and outsized improvements in the KCCQ scores. Just to level set you on how strong these KCCQ scores increases are, we aggregated results from several heart failure studies from recent years and determined that the magnitude of benefit appeared superior to all pharmacologic interventions, including CMIs and that our activity was approaching invasive surgical interventions like septal reduction therapy or aortic valve replacement. On the next slide, you can see that we achieved these broad positive results in a patient population that was arguably more medically complex than previous CMI trials with higher levels of baseline comorbidities like prior septal reduction therapy, higher hypertension, a greater percentage of Class III patients. Additionally, we had lower levels of baseline ejection fraction, increasing the risk of going below 50% threshold and higher baseline levels of gradient. So what is our hypothesis of why we're seeing these large changes in feel and function? Since I'm not a cardiologist, from a simplest sense, a mechanism that requires the inhibition of systolic function as with the cardiac myosin inhibitors may have some benefit in relieving gradient and decreasing wall stress, but at the expense of lowering ejection fraction. While ejection fraction measures have been recognized as a marker of safety and a predictor of heart failure, by definition, decreasing total blood pumped by the ventricle after contraction would be expected to blunt how a patient feels. In contrast, EDG-7500 was designed to be more potent on diastolic relaxation of the ventricle. It does not cause decreases in ejection fraction, thus affording the full potential of a sarcomere modulator with the resulting large improvements in measures of feel and function. It should be noted that AHA guidelines that state gradient should not be used to select dose for obstructive HCM patients as it is too variable and that dosing should be optimized based on feel and function measures. In summary, EDG-7500 has a strong safety profile with no drops in ejection fraction outside of the noise in the measure with substantial improvements in function, symptoms and quality of life measures in HCM patients. Since we have not observed any patients go below the threshold of 50% in ejection fraction, we may not need echo measurements for safety, which would expand the utilization of our therapeutic mechanism into community cardiologists outside the centers of excellence. We observed rapid effects on multiple diastolic parameters, broadly an important driver of pathology in heart failure. We will utilize inter-patient dose optimization to drive maximum benefit for each patient using a combination of biomarkers, feel and function and echo measures as utilized in cardiac standard of care strategies. Moving on to our major company milestones for 2025. For our cardiovascular programs, we will continue with our CIRRUS-HCM data release at the end of the year with top line from the 12-week portions of the study in obstructive and nonobstructive HCM. Also, we expect to file an IND for a second-generation 7500-like molecule for the treatment of heart failure, including HFpEF. For our muscular dystrophy program, we expect feedback from the FDA regarding a potential accelerated approval path for the use of sevasemten for the treatment of patients with Becker. Also in the first half of this year, we will disclose dose-ranging data in patients with Duchenne, evaluating functional measures and biomarker responses, which will guide our Phase III design. Turning to our financial position. This morning, we announced that we raised $200 million from top-tier health care investors, bringing our cash position to $660 million with no debt and runway through 2028. This will support the potential U.S. commercial launch of sevasemten in patients with Becker, advancement of a Phase III trials in sevasemten with -- in Duchenne, complete Phase III trials of EDG-7500 in patients with obstructive and nonobstructive hypertrophic cardiomyopathy, advance our second-generation cardiovascular asset into heart failure trials and support our other ongoing research programs. In conclusion, I'd like to personally thank everyone who's chosen to support our mission, particularly our dedicated employees and their families as well as our shareholders. Most importantly, I'd also like to thank our patient community, trial participants, their families and clinical investigators, especially Dr. Masri and Dr. Owens, who have all been integral in our success. It's been an exciting time here at Edgewise, and I truly believe we are on the cusp of demonstrating the potential of our therapeutic agents that could help to improve the lives of patients in need of more effective treatments. Thank you all for joining the call. We'll be happy to take any questions, and I'll hand it over to the operator.
Operator
operator[Operator Instructions] Our first question today comes from the line of Joe Schwartz from Leerink Partners.
Joseph Schwartz
analystCongrats on the continued strong progress and data. I have a question on efficacy and another on safety. First, on efficacy, it looks like you're seeing really encouraging signs in terms of biomarkers like NT-proBNP and clinical measures like NYHA, KCCQ. How much of this is being driven by changes or lack of changes on diastolic versus systolic function, do you think? And what do you think it could translate into in terms of peak VO2 in Phase III?
Kevin Koch
executiveYes. So we're -- it's interesting. We're the first true lusitropic molecule that has seen these kinds of rapid diastolic responses within a week. And it would -- the easiest thing to say is that, that direct diastolic effect on the relaxation of the ventricle is driving the outsized efficacy signals we're seeing. Now I guess from another standpoint, you can look at the CMIs in general and say, lowering ejection fraction from, say, 70 to 55, why would one expect that to provide benefit to a patient. So certainly, in -- you take a patient from, say, 55 to 40, you would observe patients having fatigue during exertion, shortness of breath and other measures of feel and function would go down. So I think from my perspective, we're seeing both the absolute benefit of a sarcomere modulator, coupled with our diastolic effect. And with the CMIs, you're seeing a blunting of the effect because they lower ejection fraction. So we have intrinsically a competitive advantage over the CMIs on feel and function measures. And as has been described by multiple folks on this call today, feel and function is what drives community physicians to prescribe a drug for hypertrophic cardiomyopathy. So I'm quite confident that we will have a truly beneficial drug to a wide range of patients in this space.
Joseph Schwartz
analystGreat. And then on safety, this might be for the KOLs or the company. In terms of the AF, which has been seen here, how does the AF incidents here strike you relative to what you're seeing in HCM patients who receive the current standard of care? And how much do you think this can be managed by patient selection and dosing optimization in Phase III?
Kevin Koch
executiveI think we'll start with Anjali and then Dr. Masri can address this point as well.
Anjali Owens
attendeeGreat. Thank you. So in terms of what we see in the population of patients with HCM, in general, we see about 25% to 30% of patients with atrial fibrillation. That increases based on risk factors, including age, left atrial size and the more symptomatic you are, we see higher rates of AFib. On our current CMI, which is FDA-approved mavacamten, we published work showing about 11% of patients with either new onset or worsening of AFib after starting commercial mavacamten. And importantly, those patients were able to be managed and they did not have to stop their CMI therapy, but you do have to manage AFib when it occurs. And that includes the use of antiarrhythmic agents and/or cardioversion to bring patients back into sinus rhythm. So it is part of this disease, but it is manageable.
Kevin Koch
executiveDr. Masri, perhaps you could describe -- you actually reviewed the echoes associated with our AFib patients. Maybe you might describe the extent of the disease and the complex medical nature of their background comorbidities.
Ahmad Masri
attendeeSure. So I think ultimately, when you look at HCM patients, as I've shown, it's a pretty wide spectrum. It's a continuum. And depending on where you fall on the continuum, that dictates your comorbidities that dictates what your outcomes are and what complications you could develop. And ultimately, AFib is an important piece of the HCM story, and you have to look for it, monitor it and see what's going on with these patients. Now from a phenotype perspective, the less typically the more restrictive a heart looks like and the less left ventricular hypertrophy you have and the more valvular disease you have, the more likely you're going to develop atrial fibrillation as well as the more metabolic risk factors you have. And so that typically would be taken into account. And when we see patients in the clinic, you do classify patients as patients who are likely to have arrhythmias and atrial fibrillation and patients who are less likely to have that. So I don't think it's kind of a one size fits all that it's just a number and everybody is at the same risk. I fully agree that there is a spectrum there. And some of the cases that I have reviewed are falling on the spectrum of being very high risk for developing AFib as well.
Operator
operatorThe next question for today comes from the line of Laura Chico with Wedbush.
Unknown Analyst
analystThis is Dylan on for Laura Chico. We're just wondering, could you talk about the Part D study in terms of the expectations for it to inform more on the durability of effects. In the initial 28-day study, you're seeing a rapid reversal of effects after drug removal. So with longer administration, we're wondering what would be the potential for remodeling of the heart and greater durability of effect? Would this be something that Part D results can inform on?
Kevin Koch
executiveI'll take the first part of that, but Dr. Blaustein will take perhaps a discussion of the trial itself. We've seen remodeling in the preclinical studies in nonobstructive HCM, we would expect to see the same in the obstructive HCM. We don't have an intermediate time point. Originally in the preclinical models, we saw at a 5-month time point. I would suspect we would see some deepening of response at 12 weeks, but the magnitude of that, I think, really depends on getting that data. But maybe Dr. Blaustein, maybe speak to the trial design and aspects of the other parts of the question.
Robert Blaustein
executiveSure. Thank you. Yes. I think Dr. Owens teed it up pretty nicely when she talked about our data and the fact that a dose optimization strategy of the sort that we're proposing for Part D is likely to improve both efficacy and the safety profile. And the durations of treatment at each of these dose escalation epics, should certainly be enough for us to really get a sense of what efficacy is like at that dose level. 4 weeks at each dose level, that's probably early to see remodeling. We've seen changes, obviously, as early as a few days to a few weeks. But I think having a longer-term extension and the ability to see changes over the course of, say, about a year will let us understand the potential for remodeling even better.
Kevin Koch
executiveI think one -- maybe just one more comment is that from the 50-milligram and 100-milligram data, we've noticed that there are some patients who benefit from the 50-milligram dose. So this dose optimization strategy optimizes the dose and efficacy for each individual patient. So I would -- I suspect that we will get to a place where 20% of the patients will be quite well treated at 50, perhaps 60% at 100 and some smaller percentage at a slightly higher dose. But as you saw with our data set, we saw robust efficacy at 100. So I would estimate many of the patients will ultimately be at that state. Now in the nonobstructive patients, we saw virtually or no change in ejection fraction, which is quite different from the CMIs. So that we anticipate that we can go up higher in the nonobstructive patients. And since KCCQ is the primary endpoint for the Phase III trials in nonobstructive, I think really bodes well to our -- the potential of this drug in nonobstructive where there's no need for a gradient and you're looking at feel and function measure as a way of titration.
Operator
operatorThe next question today comes from the line of Tessa Romero from JPMorgan.
Tessa Romero
analystSo for the doctors, can you contextualize the risk-benefit profile for EDG-7500 in this population and also contextualize the risk-benefit profile to that of the CMIs based on the known data? And for the company, given you know the target of EDG-7500 specifically on the sarcomere, how comfortable are you that the drug is not causing the AFib that you are seeing?
Kevin Koch
executiveWhy don't we start with Dr. Masri on the first question. Which is the risk benefit relative to the CMIs, I guess?
Ahmad Masri
attendeeYes. I think it's too early really to do these comparisons. You are looking here at a small sample size and short-term follow-up. I think what you're looking for is that you're seeing efficacy and you're seeing efficacy on multiple domains and you're seeing patients who had atrial fibrillation. And as you continue to go through your Phase II and potentially also Phase III, you want to keep that in mind. You want to continue to focus on the efficacy that you want to achieve while monitoring for safety monitoring for atrial fibrillation, which would develop in the patients or not. And then you can really get to that. But I do think it's quite early to look into this. I think the principle is when you ask me, for example, when we are using commercial mavacamten, I think the principle is that the monitoring burden for the use of commercial mavacamten is substantial. That's one. The second thing that which is data we showed at ACC, what's emerging for us also -- what's emerging is not just the monitoring burden, it's emerging is there is the risk of heart failure with the commercial real-world data set, there is the risk of also atrial fibrillation. The data we've shown was 5% of patients had new [ onset ]. So I think it's difficult this early on to do a detailed comparative analysis. But I would say that we would want to generate more data. And while you're generating data here, you are also looking at what's going on with the commercial mavacamten use at the same time as well.
Kevin Koch
executiveDr. Owens, any additional comments?
Anjali Owens
attendeeI agree. It's small patient numbers. I think if you compare, for example, I was an investigator of the PIONEER study, which was a Phase II trial for mavacamten, we saw about 20% to 25% AFib in that dose-finding Phase II study of mavacamten. Of course, we're using doses of 10, 15 milligrams of mavacamten. So these trials are used to learn about the molecule, and we frequently see that there is a change in the risk side effect profile once we optimize dose selection, patient selection. So I do think that it is early. And if comparisons are to be made, it should be with other Phase II trials.
Kevin Koch
executiveSo in regards to the target, we have not described the target of this drug. There's been no preclinical work or clinical work to actually ascribe any risk of AFib associated with. We've never seen that in any of the preclinical models. I would also point out that we ran in normal healthy volunteers for 14 days. We saw -- in normal healthy volunteers, we saw over 14 days, we saw no effect on -- and no AEs, and we had ECG monitoring within the 100-milligram dose. And that 100-milligram dose produced PK that was as high or higher than what we observed from the HCM patients. So there's no signal. It -- from our perspective, this is entirely driven by individual patients with high levels of comorbidities and not dose-related and not mechanism related.
Tessa Romero
analystCongratulations on the progress.
Operator
operatorComes from the line of Yasmeen Rahimi with Piper Sandler.
Yasmeen Rahimi
analystCongrats to the outstanding data. I think as the call is going in the direction, AFib, I feel like we really need to kind of come back to the -- what you -- what the thesis of the molecule was, which is to show diastolic improvement. And you just did that with your data sets in obstructive and nonobstructive and both of our thoughtful KOLs highlighted that. Would love to ask 2 questions in that relation. One, obviously, that not only unlocks the opportunity in nonobstructive population as well as obstructive, but it could also work in diastolic heart failure. Given the diastolic properties that you see, how do you think about development further? That's question one. Question two is the profound change that you're seeing at 4 weeks with KCCQ, which makes you wonder that at 6 months, it could get better. And therefore, you could run a registrational study based on KCCQ, the primary endpoint and have it on their label to truly make function and feel patients better. Could you maybe talk about those aspects? I think the whole AFib think you're going to work it out through patient selection and dosing. But the bigger picture is maybe something we need your help on that I think is more important. Sorry for the long-winded commentary here, but if you could tackle that.
Kevin Koch
executiveSo I think -- so the diastolic effects are unprecedented. I don't know if there's any other examples where within 7 days, you see these kind of robust changes on E prime. Of course, it's early here, but it is the underlying pathology of heart failure and disease, and it does appear to be at least contributing to the tremendous efficacy we're seeing on the KCCQ scores. And I think I noted that the primary endpoint of KCCQ is the primary endpoint of most like by the FDA for things like nonobstructive HCM. So for Dr. Blaustein though, it would be useful to talk about how a drug with a true diastolic effect might be used in cases of HFpEF and other in heart failure and whether how that would fit within the therapeutic regimen in the heart failure space.
Robert Blaustein
executiveSure. Yes. Thank you. Certainly, diastolic improvement would play a key role in the treatment of really any form of heart failure, be it heart failure with preserved ejection fraction or even heart failure with reduced ejection fraction. I think a more attractive population to study would be the HFpEF population. Obviously, for many years, we did not have any drugs approved for HFpEF. Now we do have a couple. So it's becoming a little trickier in terms of development. But I think having that key diastolic improvement puts us in a really nice position to leverage this mechanism. We could, of course, think about HFrEF, but I think heart failure with reduced ejection fraction perhaps is a bit more challenging given the large number of currently approved therapies. So I think going after the preserved population probably would fit most closely with the mechanism and is something we're very excited about, leveraging.
Kevin Koch
executiveDr. Owens, maybe weigh in on the potential of a diastolic agent for the treatment of heart failure as well.
Anjali Owens
attendeeAbsolutely. So heart failure specialists, we are searching for agents that can affect lusitropy and improve diastolic function because it's a driver of disease in many heart failure states. So I think seeing that robust change in NT-proBNP is quite promising as a potential mechanism of providing benefit in a larger population of patients who suffer from the underlying problem of diastolic dysfunction and stiff ventricles. And that comes on along the spectrum of systolic function. So I think it is encouraging data, albeit small numbers and the potential may be there for additional populations.
Kevin Koch
executiveThanks, Dr. Owens.
Yasmeen Rahimi
analystAnd if I may just squeeze one question in. Are you modifying your sort of selection of patients as you're continuing to go up in higher doses? And is there any stratifications or modifications that are going to be made in terms of the protocol for CIRRUS? Or is it just to learn from CIRRUS and make those changes in Phase III?
Kevin Koch
executiveNo. Actually, the Part D has extensive changes. We'll move to a core lab read instead of a site lab read of the echos for inclusion into the trial, which would include a clinical steering committee to evaluate patients in a more rigorous way before they enter into the trial. And this was exactly the approach taken by the CMIs going from Phase II to Phase III. We also would increase the -- looking back in the medical records go back further in 90 days, go back to at least 180 days to look for AFib, asymptomatic and symptomatic AFib in these patients. We would add to the exclusion criteria, mitral valve stenosis and calcification, which were in both of the CMI inclusion/exclusion criteria. And of course, we would look at total comorbidities on individual patients just simply from a standpoint of making sure that they should enter the trial because of their overall safety profile. So a number of different measures that will be changed in the Part D to optimize for both safety and efficacy.
Operator
operatorThe next question today from the line of Leonid Timashev with RBC Capital Markets.
Leonid Timashev
analystI wanted to stay with the AFib topic for a minute. I guess I was curious if the KOLs could compare how they would be monitoring or treating or sort of the weight of monitoring and treating for AFib versus for [ LVF ] reductions that could be seen with CMIs and how that would impact their clinical practice? And sort of how -- what the clinical course of AFib typically is in these patients? Is it normal for new onset AFib to sometimes be moderate to severe? And then sort of lastly, just keeping in mind some of the changes that you mentioned to the trial, I know one of the physicians had mentioned that there's now some potential for enrollment challenges because it was commercially approved agents. I guess how are you thinking about how enrollment would go and ultimately, the patient population you would target? I mean, would you be willing to enroll CMI nonresponsive patients?
Kevin Koch
executiveThanks, Leonid. Dr. Masri, why don't you take a crack at that?
Ahmad Masri
attendeeDefinitely. So ultimately, AFib is an important event. It is manageable, but it's an important event. You need to work with the patient, you institute anticoagulation and you treat them. The standard of treatment for AFib and HCM is rhythm control because these patients are symptomatic typically. It's very unusual for patients with HCM to have asymptomatic AFib when it's new onset or early on in their disease course. And as such, what you would do is not necessarily proactively go and implant devices or whatever to monitor for AFib. The patients will come and tell you that I felt something and you investigate it. But also clinical trials here and in other clinical trials, you have rigorous monitoring when patients come back every visit, you have EKGs, you have echoes, you examine the patient, you look into things. So it is much more likely that you're going to pick up on these things by the patients reporting as well as by the evaluations you're doing. So that's one of them. The second thing is that, as I think we talked about already is you need longer exposure to understand what is the potential incidence and what is going on with AFib in patients. Dr. Owens referred nicely to the PIONEER versus EXPLORER experience. And now later on look at the VALOR experience versus commercial experience. So these things are dynamic and they do change over time. And ultimately, we want to see improvement in symptoms. We want to see improvement in exercise capacity without necessarily having major issues that are related to the use of our therapy. I mean that's ultimately the goal in any HCM patient. There was another part to the question, but I forgot it.
Kevin Koch
executiveI think recruitment.
Ahmad Masri
attendeeYes. From a recruitment perspective, this is not something that is necessarily new to physicians and others taking care of patients with HCM. The trial was ongoing when mavacamten was or is commercially available. So there is not necessarily like a change here in terms of your background approach. And it's not like if you're tightening your review of the patients being enrolled that you're going to make the trial harder to recruit, not necessarily -- we have many patients with HCM. And I think it's not difficult to enroll in trials of HCM.
Kevin Koch
executiveDr. Owens, could you maybe address the complexity of monitoring for ejection fraction versus AFib? And what are you more worried about in your practice?
Anjali Owens
attendeeIt's a good question. We monitor for ejection fraction with a standard echocardiogram. At least at this point, we don't have other noninvasive, less invasive ways, although they're being developed to assess for systolic function or EF. So in our standard patients, they get echo. If they are not on commercial mavacamten, they typically get an echo once a year if they're stable. On mavacamten with the current REMS program, we're doing echoes every 3 months on otherwise stable patients. So they come into the office, they're seeing, they get an EKG, they get an exam, they get an echocardiogram. For AFib, as Dr. Masri highlighted, any time a patient reports a symptom like palpitations, dizziness, irregular heartbeat, any other symptom that is concerning, we do a rhythm assessment. So we would do an EKG, and we have ambulatory monitors that are sent to the patient, patch monitors and others that can assess for cardiac rhythm in an ongoing fashion. The latest 2024 HCM guidelines suggest that we should be doing increased monitoring for AFib in patients who are at high risk for AFib, and that includes age, left atrial volume size, symptomatic status. So we do monitor for AFib pretty much every year in a standard patient with HCM with an ambulatory monitor. How that might or might not change with the therapy, I think, is too early to say. For mavacamten, for example, I referenced our publication, there were about 10% to 11% of patients who either had new onset or worsening of paroxysmal AFib. And we did not change our standard monitoring practice. Those patients presented due to symptoms, and we took care of their symptoms and their AFib when it was found.
Kevin Koch
executiveThanks, Dr. Owens. Maybe speak to the next analyst or are we done?
Operator
operatorThe next question for today comes from the line of Srikripa Devarakonda with Truist Securities.
Srikripa Devarakonda
analystCongratulations on the data. A follow-up on last question. For nHCM patients in particular, very early on, you were seeing 50% reduction in NT-proBNP and [indiscernible] goes down, I should say, 42%. Just wondering if you expect to stabilize at these levels, do you expect to see a differentiation in the CMI based on this particular biomarker? And maybe one quick question on the AF. The cardio, just wondering if the patients where you had to do cardioversion, were they the same people would be excluded from Phase III or they're different?
Kevin Koch
executiveOkay. So on the first question, -- on the first question with regard to NT-proBNP, I think the response was quite large initially even within the first 7 days. So I think probably 90% of the effect on BNP will occur and probably be driven by the dose. But the -- over time, I think 12 weeks and longer, some level of remodeling might deepen that response. We don't know at this point. In regards to the exclusion criteria, we would -- I think I would suspect that none of the patients who had the AF events would end up being in a typical Phase III study given the level of background comorbidities those patients had. So -- and as I said, as we said, 2 of the patients were not HCM patients. That seems obvious they would not be included simply on wall thickness.
Unknown Executive
executiveThe other thing to add, particularly in nonobstructive, what's really novel here and what's going to be really exciting is we know that nonobstructive is making up a high proportion of diagnosed HCM patients. This is well known. And overall, nonobstructive patients start with a lower baseline LVEF. So if you look at our baseline criteria, the average LVEF at baseline was 61%. So the fact that we're not seeing any changes in LVEF and we're able to push the dose to drive benefit, whereas what we've seen with the CMIs is the benefit comes at the cost of ejection fraction loss in nHCM. That's going to be ultimately the limitation with that mechanism where you're impacting systolic function, whereas we're able to drive that benefit without dropping ejection fraction.
Srikripa Devarakonda
analystGreat. And if I can squeeze one in...
Operator
operator[Operator Instructions] The next question comes from the line of Cory Kasimov with Evercore.
Cory Kasimov
analystSorry to pile on to the AFib discussion, but I'd like to follow up on the KOL color here. I guess the bottom line and what I think investors are trying to understand is how much of a risk is AFib for the future outlook of EDG-7500? Like investors are acting this morning as if there is no future for this product. So I'd really like to better understand where the KOLs think the disconnect is here.
Kevin Koch
executiveDr. Owens?
Anjali Owens
attendeeSure. I think you need a placebo-controlled trial. That's what we've done in prior programs. I mentioned the PIONEER data, which was Phase II mavacamten. If that drug would have stopped development based on a 23% risk in their Phase II study, we would not have the opportunity to use a great drug that we're using now in 200-plus patients. So I think you really need a placebo-controlled trial so that you can understand if there are differences. The population of patients with HCM is complex. It is not one size fits all. There are patients with really thick walls. There are patients with thinner walls. There are patients with very large atria. There are patients with normal sized atria. And I think it's too early to say what the effect is going to be. I enrolled 9 patients in Part B and C of this study and 0 of the 9 had AFib.
Kevin Koch
executiveDr. Masri, maybe your thoughts?
Ahmad Masri
attendeeYes. I think not much to add with Dr. Owens sharing her own experience with this. Ultimately, you really have to take the data with the size of the population that you're dealing with. And I think even though we're talking about a small study here, the Phase II is still ongoing. And the Part D portion of it, as Rob has shown, essentially is going to be looking into this further, the patients -- more patients will be treated. And that's going to give you a lot of ideas. But ultimately, I fully agree that you need Phase III trials with placebo controlled to essentially really walk away with these ideas and concepts. That's ultimately what you need.
Operator
operatorThe next question comes from the line of Paul Choi with Goldman Sachs.
Kyuwon Choi
analystMy question is for the 2 KOLs, Dr. Masri and Dr. Owens. And as you think about the future here in 2026, there will likely be 2 approved therapies for obstructive HCM. So as you think about your typical obstructive HCM patient in your practice, and I guess the question is, what would you sort of recommend to them in 2026? Would you recommend, I guess, at that point, going out one of the commercially available ones or enrolling in a clinical trial? And if enrolling in a clinical trial, is there a particular population or subpopulation you would focus on?
Kevin Koch
executiveDr. Masri, do you want to take that?
Ahmad Masri
attendeeYes. So again, we're not new to this, correct? When we were enrolling in many different clinical trials for HCM, we've had commercial mavacamten. Even before commercial mavacamten, you always had the competition of other things going on in the space. And so we simply offer patients these opportunities, and we let them choose. And I think ultimately, that's where you want to think about -- it's such a specialty space that this is not a disease where you go to 1,000 sites and you just like try your best. This is a disease where you focus on your sites that have patients and they know essentially how to approach this. And ultimately, you offer patients the options and help work with them to select one option. We -- I personally at least and have not experienced major challenges in terms of recruitment for trials when you actually are honest forthcoming and offer patients all the options. Dr. Owens just mentioned that in this study, she recruited 9 patients, and that's when you would have other commercially available options. So I'm not so sure that this is an issue on its own, honestly. You just offer patients the options available. And we've had experience from another disease that is somewhat similar in a way, amyloidosis, transthyretin amyloidosis. You've had many options on the market and you've had newer options coming and clinical trials, and there weren't issues there either.
Kevin Koch
executiveDr. Owens, maybe how do you select patients to go on either a trial or one of the commercial agents perhaps is an interesting question.
Anjali Owens
attendeeSure. As Dr. Masri said, our prime edict in HCM is shared decision-making, and that is what we do. So we have a multidisciplinary team. We offer the patients all of the options. We do this for other standard of care therapies for HCM, including septal myectomy, alcohol ablation, other therapies that are available for the obstructive patients, for example. And we talk with them about what the options are. The other thing I would add is now that there are targeted therapy, at least one available and one under FDA review, there is now more focus on identifying and diagnosing new patients with HCM. And we know this condition occurs in at least 1 in 500 individuals, and the vast majority of them are currently undiagnosed. So we are seeing an increase in the number of patients being diagnosed and ultimately making it to our center for evaluation. So we're seeing new patients. And those patients, of course, afford the opportunity to be presented with all of the options. So I think we will be able to enroll, whether the baseline characteristics of those patients differ from the early EXPLORER patients, for example, I think, is yet to be seen. In this small cohort, we did see higher gradients than what we saw in EXPLORER and even VALOR and SEQUOIA. So I think we'll watch to see if the demographics are changing, but there are absolutely patients with HCM who are candidates for trials. Many of them come to academic centers because they're interested in research, and they want to be in a trial.
Operator
operatorThere are no further questions at this time. I would like to pass the call back over to Kevin Koch for closing remarks. Please go ahead.
Kevin Koch
executiveWell, thank you all for joining today. I think we have really an exciting mechanism where we've seen robust changes in gradient [ EMP ], major markers of disease and really outsized increases in the KCCQ scores and decreases in New York Heart Association moving patients to asymptomatic. And this is really where this drug is going to show its most benefit with all with no changes in left ventricular ejection fraction, which is an -- with a manageable AE profile. So we plan to continue to move forward in Part D, and I anticipate that we will move to Phase III with this drug sometime in the first half of '26. Look forward to any additional questions in the future and talking to you all. Thank you for joining. Bye.
Operator
operatorThat concludes today's webinar and conference call. Thank you all for your participation. You may now disconnect.
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