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Status Update

Nov 10, 2025

Operator

Welcome to the Merck & Co., Inc. in Rahway, New Jersey, USA AHA Investor Event. At this time, all participants are in a listen-only mode until the question and answer session of today's conference. At that time, if you would like to ask a question, press star one on your phone and record your name at the prompt. This call is being recorded. If you have any objections, you may disconnect at this time. I would now like to turn the call over to Mr. Peter Dannenbaum from Senior Vice President, Investor Relations. Sir, you may begin.

Peter Dannenbaum
SVP of Investor Relations, Merck

Thank you, Ivy. Good evening and welcome to Merck's Investor Event, coinciding with the American Heart Association Scientific Sessions 2025. Thank you to those of us here in New Orleans and also to those participating via the webcast. We appreciate your interest in Merck. Before we get started, I'd like to remind you that some of the statements that we make today may be considered forward-looking statements within the meaning of the safe harbor provision of the US Private Securities Litigation Reform Act of 1995. Such statements are made based on the current beliefs of our company's management and are subject to significant risks and uncertainties. If our underlying assumptions prove inaccurate or uncertainties materialize, actual results may differ materially from those set forth in the forward-looking statements.

Our SEC filings, including Item 1A in the 2024 10-K, identify certain risk factors and cautionary statements that could cause the company's actual results to differ materially from those projected in any of our forward-looking statements made today. Merck & Co., Inc., Rahway, New Jersey, USA undertakes no obligation to publicly update any forward-looking statements. During today's call, a slide presentation will accompany our speakers' prepared remarks. These slides and our SEC filings are all posted to the Investor Relations section of our company's website. Now, moving to the agenda. Speaking on today's call will be Dr. Dean Li, President, Merck Research Laboratories, Dr. Joerg Koglin, Senior Vice President, Head of General and Specialty Medicine, Global Clinical Development, and Janni Oosthuizen, President, US Human Health. The full biographies of the speakers can be found in the appendix of the slide presentation.

Dean will start our prepared remarks with an overview of our Cardiometabolic and Respiratory portfolio. Joerg will then highlight the Enlisted data presented at AHA and our development strategy, and Janni will conclude by discussing how Enlisted fits into Merck's effort to address the silent CV epidemic. Our upfront remarks will take about 30 minutes, after which we will turn to Q&A. Jana Roberts, Senior Vice President, Global Pharmaceuticals, is also here to assist in responding to potential questions. With that, I'll turn the stage over to Dean.

Dean Li
EVP and President, Merck Research Laboratories

Thank you, Peter. Thank you very much for joining us in the room and online. Welcome to our investor event in conjunction with the American Heart Association Scientific Sessions in New Orleans. I am privileged to share the stage with my colleagues across both our research and commercial organizations, and I'm very much looking forward to provide an overview and sharing my enthusiasm for Merck's cardiometabolic and respiratory portfolio. We have built a broad Cardiometabolic and Respiratory portfolio that can redefine how these diseases are treated, starting left to right. For Winrevair, we are very pleased with the impact Winrevair is having in the real world. With positive results from both ZENITH and HYPERION, Winrevair continues to generate a wall of data.

We look forward to additional opportunities, including sharing results of the phase II CADENCE study and providing updates on the development of the auto injector. Next, Ohtuvayre. It is the first novel mechanism for inhaled maintenance treatment of COPD in more than two decades. As a dual inhibitor of PDE-3 and 4, Ohtuvayre has both bronchodilatory and nonsteroidal anti-inflammatory properties. The strong phase III data culminated in FDA approval in June 2024. There is an ongoing phase II trial in non-cystic fibrosis bronchiectasis, which has a primary completion date of September 2026, and then for MK-0616, we were pleased to share compelling data this weekend for MK-0616, our oral PCSK9 inhibitor. We now have three positive pivotal trials from the CORALreef program. This weekend, we presented data from the CORALreef Lipid study, as well as a CORALreef study focused on heterozygous familial hypercholesterolemia.

This has the potential to be the first choice add-on lipid-lowering therapy with monoclonal antibody-like efficacy . We expect filings to begin in early 2026, and longer term, MK-0616 has the potential to be an anchor for combination therapy. The focal point of this event and the data at AHA is Winrevair and MK-0616. Evidence continues to accumulate for Winrevair's strong clinical benefit across a broad spectrum of patients with pulmonary arterial hypertension. Winrevair has generated positive clinical data demonstrated by the sequential studies published in the New England Journal of Medicine. Winrevair is having a real impact on patients and has the potential to transform the treatment of PAH. I'm pleased with the data shared for Winrevair this weekend, presented by Vallerie McLaughlin from the University of Michigan.

In these data, there was a pooled post-hoc analysis from all three studies that showed the effect of Winrevair on major morbidity and mortality outcomes in a broad range of the population. There was a 75% reduction in the risk of composite morbidity and mortality endpoint. There was a 56% reduction in risk of lung transplantation or death and a 51% reduction in the risk of death. On the right is a ZENITH label update for the expanded indication. Winrevair is now the first PAH therapy with an indication that includes components of the clinical worsening events, hospitalization for PAH, lung transplantation, and death. Ohtuvayre is the first novel mechanism for inhaled maintenance treatment of COPD in more than 20 years, an area with significant unmet need. It is the only product to combine bronchodilatory and nonsteroidal anti-inflammatory properties in a single molecule.

With Ohtuvayre's broad label and favorable benefit-risk profile, it has the potential to redefine the maintenance treatment paradigm. Ohtuvayre improves symptoms of COPD, enabling better breathing where patients start to feel good. We'll continue to build on the positive real-world experience, and we have additional opportunities and follow-on indications. Now, to the main event. MK-0616 was designed to target PCSK9 in the same way as the antibodies and deliver antibody-like efficacy . It has shown profound reduction in LDL cholesterol. The CORALreef lipid study demonstrated a reduction of 55.8% in the primary analysis and 59.7% in the Post-Hoc Reanalysis, and the CORALreef study focused on heterozygous familial hypercholesterolemia demonstrated a reduction of 59.4%. We are pleased with the degree of lipid lowering for the secondary endpoints, an ApoB with a 50% reduction, non-HDL cholesterol with a 53% reduction, and Lp(a) with a 28% reduction.

These percentages for ApoB and non-HDL cholesterol are aligned with what has been reported for anti-PCSK9 monoclonal antibodies. The main takeaways before handing it to Joerg: MK-0616 achieved LDL cholesterol reduction surpassing other oral lipid-lowering therapies used as an add-on to statins. Over two-thirds of patients achieved rigorous pre-specified LDL cholesterol reduction goals, and the ease of use, including an oral formulation with no adverse drug interactions and more than 97% compliance and strong safety and tolerability. In closing, with efficacy similar to the monoclonal antibodies, MK-0616 is a simple, easy-to-use pill that can help address the ongoing cardiovascular disease epidemic with the potential to significantly impact public health globally. And with that, I will now turn the stage over to Joerg.

Joerg Koglin
SVP and Head of General and Specialty Medicine, and Global Clinical Development, Merck

Thank you, Dean. Good evening and hello, everyone. I'm Joerg Koglin, and I lead clinical development for general and specialty medicine at Merck. It's my pleasure to be here today and to provide an overview of the results from our phase three CORALreef Lipids and CORALreef Heterozygous FH studies, evaluating the safety and efficacy of our oral PCSK9 Inhibitor MK-0616. The studies were presented yesterday and earlier today in late-breaking science sessions at the conference here in New Orleans. The Heterozygous FH study also has been published by now in JAMA. The lipid study has been accepted by the New England Journal of Medicine and will be published at a later date. When I went through my own training as an internist and cardiologist, obviously many years ago, Merck's legacy in cardiovascular diseases in general and in Atherosclerosis in specific was very obvious.

Merck led the way in developing therapies that changed cardiovascular medicine. In Atherosclerosis, the approval of Lovastatin as the first statin in the late '80s, followed by simvastatin as a better second generation, as well as the development of ezetimibe as a preferred statin add-on, spearheaded a new wave of products focused on lowering LDL cholesterol levels and reducing strokes and myocardial infarctions. Merck scientists played a foundational role in establishing the current standard of care in lipid-lowering t herapies. Later, this upcoming week, actually, the role of the Merck Research Laboratories will be acknowledged by the American Chemical Society with the designation of the Raleigh and West Point sites as ACS National Historic Landmarks for the pioneering work that led to the discovery and development of the first step. Yet, despite all that progress in developing increasingly potent lipid-lowering medicines, we remain in the middle of a cardiovascular disease e pidemic.

Cardiovascular diseases remain the leading cause of death in adults worldwide, claiming roughly 19 million lives every year. 85% of those deaths are attributed to a therosclerotic c ardiovascular disease, or ASCVD. For over a century, cholesterol has been recognized as a major driver of ASCVD, and yet it is estimated that half of the US general population has elevated blood lipid levels. Even with major advances in lipid-lowering therapies, residual cardiovascular risk remains high. Less than 30% of all patients actually treated for ASCVD achieve their guideline-recommended LDL goals, reinforcing the need for additional and more effective interventions. The programs that culminated in the discovery and development of MK-0616 started with the bold goal to deliver the most effective LDL-lowering pill and to make it accessible to a broad range of patients worldwide.

Injectable PCSK9 monoclonal antibodies have set a high bar in clinical studies, achieving LDL lowering by 50%-60% with significant reductions in major adverse cardiovascular events and a favorable safety profile. However, their use has been limited by the need for injections and by remaining access barriers. Developing an orally bioavailable PCSK9 Inhibitor with antibody-like properties represented a significant medicinal chemistry challenge. MK-0616 is a novel macrocytic peptide that has been shown to disrupt the binding of PCSK9 to the LDL receptor in a manner similar to that of approved monoclonal antibodies, but is administered orally once a day. Similar to antibodies, it unfolds its action at the cell surface without really getting into the cell, and this comes with the expectation to avoid any major safety signals or adverse drug interactions.

However, unlike monoclonal antibodies, it can be stored at room temperature, it circumvents the need for cold chain transportation, and it can be manufactured and distributed at scale, offering the potential for broad global access. The phase III Enlisted development program spans across a broad range of patients with ASCVD. The development program includes the CORALr eef Lipids, Heterozygous FH, and add-on studies all focused on changes in LDL cholesterol as a basis for an initial filing. In parallel, we have now fully enrolled the CORALr eef outcome study designed to show that Enlisted can safely and effectively lower the risk of major adverse cardiovascular events. Today, we'll talk about CORALr eef Lipids and Heterozygous FH. We'll present the results of the add-on study at a later point of time. Let me start with CORALr eef lipids, our broad hypercholesterolemia study.

The study randomized 2,912 participants, two to one, to Enlisted or placebo. The study focused on patients in need for ease of primary prevention with an LDL of at least 70, or patients following a prior ASCVD event requiring secondary prevention with an LDL higher than 55. All participants had to be on optimized and stable lipid-lowering therapies. The primary endpoint was the placebo-corrected mean percent change in LDL at week 24, with secondary endpoints including LDL changes at week 52 and 24-week changes for non-HDL, ApoB, Lp(a), and goal attainment rates. The study population was balanced, enrolling a broad and very diverse primary and secondary prevention population. The mean age was 63, 40% were female, almost half of the patients had type- 2 diabetes, 60% already had a first event. Most patients were already receiving statin therapy with a mix of moderate and high-intensity regimen.

The baseline LDL cholesterol averaged 96mg/dl . MK-0616 in this study was very well tolerated with a safety profile similar to placebo. The rates of adverse events, serious adverse events, or discontinuation due to adverse events were comparable between those groups that were rare and were also completely balanced. Adherence rates for studied drug intervention and for fasting instructions were with 97% or higher, exceptionally high, documenting the ease of use for this medication in our study population. There were no apparent differences in the proportion of participants with adverse events across any of the major system organ classes between MK-0616 and placebo. Please note the absence of any difference in Gastrointestinal AEs or Musculoskeletal AEs. So, in these almost 3,000 patients followed for over a year, the MK-0616 safety profile was remarkably similar to placebo.

Now, with regard to efficacy, MK-0616 demonstrated robust, statistically significant, clinically profound, and durable reductions in LDL-C. When using the data handling rules as specified in the statistical analysis plan, which resulted in biologically impossible baseline values in five out of the 2,909 patients, the calculated LDL reduction at week 24 was 55.8%. When correcting for these biologically impossible values to obtain the most accurate estimate of the true effect size, the placebo-corrected LDL reduction was 59.7%. The LDL reduction was seen early, was durable over the entire duration of the 52-week study. These levels of LDL reduction delivered on the promise of MK-0616 as an oral PCSK9 Inhibitor designed to have antibody-like Efficacy while surpassing reductions seen with all other oral lipid-lowering therapies approved or currently known to be in development and used on top or instead of statins.

Designed as the most potent oral lipid-lowering solution, we used an exceptionally rigorous definition for goal attainment. Aligned with both the European treatment guidelines and the 2022 ACC/AHA consensus statement, we defined goal attainment as an LDL reduction by at least 50% and an absolute LDL attainment of lower than 70 or 55 milligrams per deciliter. Even with these ambitious definitions, close to 70% or two-thirds of participants receiving MK-0616 achieved these goals regardless of their intensity of background therapy, and this compares to only 1.5 and 1.2% in the placebo group. When using more liberal definitions, such as those used for other compounds approved or in development, goal attainment reached or exceeded 80%, as should be expected from best-in-class LDL reductions. Pre-specified as Secondary Endpoints, we also looked at other Atherogenic Lipoprotein Biomarkers.

ApoB, as a marker of the number of atherogenic particles, is recognized as an even stronger predictor of ASCVD risks and LDL-C, and is expected to replace LDL-C in treatment guidelines at some point in time. Non-HDL quantifies the total amount of Atherogenic Cholesterol, including but not limited to LDL. As such, it also has been shown to be a better predictor of heart disease than LDL-C alone. Lp(a) is an independent genetic risk factor for ASCVD and in the past has not been addressed by statins or other widely used lipid-lowering therapies. In contrast, statins slightly increase Lp(a). Looking at these parameters, Enlisted again produced reductions in each of these endpoints with an effect size aligned with the original goal to have antibody-like efficacy. These biomarker findings provide further support for the promise of Enlisted to have a profound impact on outcomes for patients at risk of ASCVD.

Let's quickly look at the CORALr eef Heterozygous FH study, our second pivotal lipid study focusing on patients with heterozygous familial hypercholesterolemia. The study enrolled 303 adults with Heterozygous FH, randomized two to one, to either MK-0616 or placebo on top of statin Therapy. The primary endpoint again was LDL-C change at week 24, with similar secondary endpoints as the CORALr eef lipids study. Again, MK-0616 achieved placebo-controlled a 59.4% mean reduction in LDL-C from baseline at week 24 in the heterozygous FH population, with evidence of efficacy seen early and being durable over the full duration of the study. Comparable to our findings in the main lipid study, these results reinforce the agent's potential in these high-risk genetic populations. In summary, across the full development program, MK-0616 showed consistently robust LDL-C lowering in the range of 57% to almost 60%.

These values are consistent with placebo-corrected reductions of approximately 60%. Again, these levels of LDL-C reduction across all studies delivered on the promise of trying to come up with a PCSK9 Inhibitor that could be antibody-like in its efficacy . The consistency in the effect size was also observed for changes in ApoB, non-HDL, Lp(a), as atherogenic predictors of cardiovascular risk with reductions of minus 50%, 53%, and then 28% respectively across all studies. These results support our original ambition to bring the best oral lipid-lowering agent with antibody-like efficacy to a broad population globally. Enlisted offers profound LDL reduction, translating into robust LDL-C goal attainment with broad reductions in atherogenic particles. It was easy to use and came up with placebo-like safety profile.

Together with recent outcome results presented here at AHA yesterday, these data make us very excited for the future readout of our CV outcome study to confirm Enlisted's role in reducing the risk for stroke, MI, and cardiovascular deaths. The presentations here at AHA this weekend are just the start. Data from the CORALreef Lipids and Heterozygous FH studies will support regulatory filings in early 2026. We've already announced the successful readout of the add-on study and are planning to present detailed results in early 2026 too. As a reminder, this study will compare Enlisted to other mechanisms used as add-on to statin therapy. Beyond that, we've now fully enrolled the CORALreef outcome study of studies that includes both primary and secondary prevention patients with a primary completion date projected in late 2029.

We also initiated a pediatric Heterozygous FH study and have announced the upcoming start of a co-administration study with rosuvastatin. In conclusion, MK-0616 is designed to address the global cardiovascular epidemic. The studies presented here at AHA established the foundation for an initial filing early in 2026. Together with the add-on study, we strongly believe that these data will position MK-0616 as the first choice oral add-on lipid-lowering therapy. The CORALreef outcome study is designed to provide a definitive measure of the potential of MK-0616 to reduce stroke, MI, and CV deaths in both high-risk primary and secondary prevention patients. The development of a statin fixed dose combination would allow to further simplify and optimize management of LDL-C in most patients.

A potent oral medication with the potential for appropriately managing LDL-C in the vast majority of patients would further transform treatment, an expensive field, into other novel mechanisms that have been shown or hypothesized to drive the prevention of ASCVD beyond LDL-C lowering. We believe that Enlisted is uniquely positioned as a cornerstone of future combination therapies and that our pipeline offers multiple different options to try to solve the CV epidemic. With that, I'll hand it over to Janni.

Janni Ooshuizen
President of Human Health US, Merck

Thank you, Jeorg. Good evening, everybody. There's an urgent need for additional new treatment options to address the Global cardiovascular disease epidemic. Cardiovascular disease is the number one cause of mortality worldwide, and each year about 85% of CV disease-related deaths are due to atherosclerotic cardiovascular disease. Despite the widespread availability of statins, LDL cholesterol control is still falling short in routine practice.

In the United States, nearly 70% of patients on lipid-lowering Therapy are not at the LDL-C goal. The result is substantial economic cost to healthcare systems as well as to society. Globally, the vast majority of treated patients not at goal are on statin Monotherapy, which speaks to the significant opportunity that remains for add-on therapies to improve outcomes for patients. We are very excited about the potential to bring MK-0616 to patients, given the substantial impact it can have in addressing the silent CV epidemic. As we plan to bring MK-0616 to market, there are some current market dynamics to highlight. There is a lack of patient awareness as CV disease typically progresses over time and leads to serious complications without noticeable symptoms. Many individuals may not be aware of their risk factors, which may put them at increased risk for serious disease.

For those who are treated and not at goal, there is an opportunity for patient awareness and activation given the silent nature of the disease. Additionally, there are varying LDL-C targets and performance metrics across geographies. Even where clear targets exist, they're not always consistently applied in practice. This is leading to suboptimal outcomes for patients. And in terms of current state, there has been limited use of PCSK9 therapies to date. Across the US, Europe, and Japan, more than 80 million treated patients have LDL-C levels that are above guideline-recommended goals. Our early launch focus will be on treated patients who are not at goal and need additional LDL-C lowering. This includes secondary prevention patients with ASCVD and high-risk primary prevention patients whose LDL cholesterol remains above target on statins, including those with Familial Hypercholesterolemia, as well as individuals who cannot tolerate higher-intensity statins.

We anticipate that initial prescribing will be more weighted towards patients with established ASCVD, with the opportunity in those patients who are at risk of ASCVD contributing to additional growth beyond the early launch years. Over the long term, there are significant opportunities to shift toward earlier routine combination therapy through future fixed dose combinations. Additionally, there's a large eligible cohort of people who are not receiving any lipid-lowering therapy today. As Dean and Joerg said, Enlisted is designed to deliver antibody-like LDL Cholesterol lowering with the simplicity of a daily pill. We believe it has the potential to be a very significant contributor in helping address the silent CV epidemic. In the phase III study, Enlisted achieved 59.7% LDL-C reduction. We believe this sets a new high bar for oral add-on lipid-lowering therapies.

Importantly, a substantial majority of patients met rigorous LDL-C targets, including both absolute goals and percentage reductions from baseline. This level of goal attainment could become even more important should more rigorous guideline targets be established in the future. As a daily oral pill, Enlisted offers ease of use with safety comparable to placebo and no adverse drug interactions. These features make it simple for patients to use and support broad real-world uptake. As we have previously communicated, our intent is to enable broad access for Enlisted. We are committed to working with payers to reduce barriers and to support patients that need additional therapy beyond statins. An oral formulation also opens up Enlisted to a much broader target prescriber base than traditional specialists, such as cardiologists, to also include primary care professionals.

This combination of efficacy , safety, and ease of use, as well as broad access and a wider prescriber base, positions Enlisted to be a very important treatment option and to help address the CV epidemic. Earlier this year, we communicated the components of our expansive late-stage pipeline that comprised a potential non-risk-adjusted revenue opportunity of over $50 billion by the mid-2030s. This included approximately $50 billion from our Cardiometabolic and Respiratory portfolio. Our confidence in the cardiometabolic and respiratory opportunity is largely underpinned by Enlisted and Winrevair, each of which we believe have multi-billion-dollar commercial potential. Additionally, we have recently added an important new growth driver in Ohtuvayre, which we also believe is a multi-billion-dollar revenue opportunity. We furthermore have many promising early-phase programs which represent incremental commercial opportunities.

Overall, we are confident in our ability to leverage our commercial engine and global footprint to advance our Cardiometabolic and Respiratory portfolio to positively impact patients around the globe. With that, I turn it over to Peter.

Peter Dannenbaum
SVP of Investor Relations, Merck

Okay, Ivy, we're now ready for questions. If you could please repeat the instructions to those on the line.

Operator

Ladies and gentlemen, if you wish to ask a question, please press star one on your telephone keypad. You may withdraw your question at any time by pressing star two. If you're using a speakerphone, please pick up the handset before pressing the numbers. Once again, if you have a question, you may press star one. Our first question comes from Chris Schott from JP Morgan. Please go ahead.

Hi, this is Taylor on for Chris. Thanks so much for taking our question. We were just wondering if you could provide a little more color about how you're thinking about Enlisted food effect and how this would be reflected on the product's label, and then what's the latest on how you're thinking about potential fasting requirements for Enlisted? Thank you.

Dean Li
EVP and President, Merck Research Laboratories

Why don't I ask Joerg to do a little bit of a response to that, and then Janni can speak about some of the other more commercial implications, and then I'll maybe make a comment or two.

Joerg Koglin
SVP and Head of General and Specialty Medicine, and Global Clinical Development, Merck

Good. Yep, I can get started. Enlisted is recommended to be taken first thing in the morning and then to wait for 30 minutes before taking food. After that, in our study, an exceptionally high adherence rate to these recommendations with a compliance of over 97% suggests that participants really had no problems with this approach and supports the ease of use for Enlisted.

As a physician, I think this is not surprising given that commonly used medicines are taken first thing in the morning. Standard practice actually for many patients is to take some medicines, brush their teeth, get ready for their day, and then go on with their lives. And Enlisted would fit very well in that routine. At the end of the day, I think for patients, it's most important in how effective a treatment will be and if it is able to get them to their treatment goals.

Janni Ooshuizen
President of Human Health US, Merck

Yeah, thank you, Joerg. I fully agree. From our perspective, we strongly believe that this will not be a barrier to use. And in fact, it could be a positive.

If you think about a patient establishing a very simple routine of taking Enlisted first thing in the morning when you wake up and before you know it, 30 minutes have passed and you get on with your day with the most potent lipid-lowering Oral agent that is available. So we really think this could actually be a very positive aspect in terms of driving compliance. And that's what we saw in the trial. We saw a 97% compliance rate. So I think that's great confirmation that this truly is not a barrier for use. I don't have much more to say except that's how I take my medicine.

Peter Dannenbaum
SVP of Investor Relations, Merck

So Ivy, we'll take a few here in the room. Daina. And if you could please state your name and firm, that would be really helpful. Thanks.

Operator

Hi. Daina Graybosch from Leerink Partners.

Daina Graybosch
Senior Managing Director of Immuno-Oncology, Leerink Partners

Congrats on the data. I'm actually going to ask a different one, but also on adherence. And that is, you did have 3% that weren't adherent. Did you see, is that enough to see whether that actually had a negative impact on the outcome? Just in case patients aren't as adherent in the real world, is that a risk or not?

Dean Li
EVP and President, Merck Research Laboratories

York, did you want to take that in terms of the clinical trial?

Joerg Koglin
SVP and Head of General and Specialty Medicine, and Global Clinical Development, Merck

I think the clinical trial adherence that we observed is exceptional, even when you compare that to drugs that are not given with specific fasting instructions. Of course, the regulatory filing will be supported by much more detailed pharmacokinetic fasting studies. And at the end of the day, this is something that was easy to take for patients. They didn't struggle with it. They stayed on drug.

You see that patient and the durability of effect over time, I think, further supports that.

Peter Dannenbaum
SVP of Investor Relations, Merck

Great. Next question. Nick.

Hi, Nick Jennings for Goldman Sachs. So the 52-week LDL-C lowering seemed a little bit lower than the 24-week period. What do you think is driving that difference? And we did not see that in the HeFH study, I believe. So difference between those two studies.

Joerg Koglin
SVP and Head of General and Specialty Medicine, and Global Clinical Development, Merck

We start just with the observation. There was a profound treatment effect. You see it early. It is durable over time. I think a small diminution of treatment effect is something that you actually consistently observe in almost every lipid-lowering study. It's actually something that you can see when you look at the product circular for some of the injectables.

It's something that you see in the phase two and phase three results, essentially for everything that is in development or has been recently published. You're right. Sometimes it doesn't happen in our Heterozygous FH study. As you point out, the 24-week LDL reduction of 59.4% compares to 61.5% at week 52. In either case, I think in the end, what we take from this results shows durability of the LDL effect over time. Great.

Peter Dannenbaum
SVP of Investor Relations, Merck

Any others in the room? Malcolm?

Malcolm Hoffman
Senior BioPharma Equity Research Associate, BMO Capital Markets

Hey, Malcolm Hoffman here for Evan from BMO. Thanks for taking our question. Looks like we may get phase two data for MK-7262, potentially NEA now. Thinking about that trial and what we have seen with Enlisted so far, how do you think about these two agents and their potential to be combined further?

What more may you need to see to pursue this in a clinical trial? And are there any specific considerations that you would need to think about in such a combo, given the food effect we already discussed?

Dean Li
EVP and President, Merck Research Laboratories

So I'll just answer it more broadly. We think these results with MK-0616 and also other data that was presented about how important being monoclonal antibody-like, because there was data about monoclonal antibodies, really suggests a tipping point of being able to address LDL. And I think that's a profound impact for the field. And I think the field felt that this weekend. I also think that's going to be a tipping point because it's going to allow people to begin to ask themselves what other risk factors could be important.

I'm not going to go through what precisely every combination, but the three buckets after LDL that you might consider is clearly inflammation has to be looked at as something that could be important in terms of cardiovascular events and risk. Clearly, Lp(a) will be important in relationship to that. In fact, those patients who have high Lp(a), really the number one things you have to do with a cardiologist is you need to drop their LDL cholesterol as close to zero as possible. And I think the last one is clearly important for cardiovascular outcomes is to understand what's the relationship of obesity in relationship to that. So we look at as LDL, inflammation, Lp(a), and obesity. And we have agents in all four categories.

And as with those advanced, we will make decisions as to when to advance them, how to advance them, and whether they should be advanced in monotherapy or in fixed dose combinations.

Peter Dannenbaum
SVP of Investor Relations, Merck

Great. Just a reminder for those participating virtually, if you wish to ask a question, please use the dial-in number that is provided on the event page of our website. Ivy, if we could take a few more from the phone line, that'd be great.

Operator

Absolutely. And again, that is Darwin. If you have a question on the phone, our next question comes from Vamil Divan from Guggenheim. Please go ahead.

Vamil Divan
Analyst, Guggenheim Securities

Great. Thanks for taking my question and for hosting this event. I just had a question. You touched on this in the prepared remark about the primary prevention data we saw from Amgen at the conference.

And I'm just curious your thoughts on what we saw there in terms of the impact that it had and how does that impact your views on what we said in the show and your outcomes trial and also just overall the market potential now. Has it gone up or changed in any way based on what we're seeing on the outcomes? Thanks.

Dean Li
EVP and President, Merck Research Laboratories

So I'll turn it over to Joerg, but I do think the data presented, as you discussed, emphasizes how important PCSK9 as a pathway is and how important the specific mechanism by which the antibodies work, which is to interrupt PCSK9 and LDL receptor interactions, can really have a profound impact. And with that, I'll turn it to Joerg.

Joerg Koglin
SVP and Head of General and Specialty Medicine, and Global Clinical Development, Merck

Yeah. So the evaluation is a great study provided a 25% reduction in MACE. And I think it's fair to believe that the results will reset the urgency in the field to initiate LDL therapy, perhaps a little bit earlier in patients and to think about more ambitious LDL goals. The results get us more excited, even more excited about the future readout of our CORALreef study based on A, we have established that we have LDL lowering effects that would predict an outcome in the same range. And we also, of course, acknowledge that certain design features in the VESALIUS study and in the coral reef outcome study are pretty similar. That makes us pretty excited about these results.

Peter Dannenbaum
SVP of Investor Relations, Merck

Great. Next question, please, Ivy.

Operator

Next, we'll go to Courtney Breen from Bernstein. Please go ahead.

Courtney Breen
Analyst, Bernstein

Everyone, thanks so much for taking the question this evening.

I wanted to just ask a little bit about the dimensions that you're considering when it comes to commercialization of the product. I think there's been a few questions on adherence so far, but I also wanted to ask in the context of kind of some of the pricing conversations and your language previously around democratizing access to these products. We now have Amgen offering Repatha. It's $239 in the patient channel. We've now also kind of just had a big GLP-1 deal land in the US with the Trump administration. And so can you talk a little bit about the positioning of this product in the context of others that might be launching, such as the oral GLP-1s that would be considered for many of the same patients around the same time? Thank you so much.

Dean Li
EVP and President, Merck Research Laboratories

That's a great question, and I'll hand it to Janni to take a stab at that.

Janni Ooshuizen
President of Human Health US, Merck

Yeah. Thank you for the question, Courtney. First of all, from a pricing perspective, we will price to get broad access in the United States. And in terms of democratizing treatment, this really is a global cardiovascular epidemic. And I think we have a unique opportunity to impact this disease on a global basis with a small molecule that, as Jeorg said, is easy to ship, and we can hopefully get a price point also in ex-US markets where we can open up access. So that's part of the democratization. But certainly in the United States, we have an objective to make sure that we remove barriers as much as we can in order for patients with a need for further intensification and add-on to statin to have access to Enlisted.

That really is the objective. In terms of using technology, whether it's digital means to continue to remind patients for compliance, those are all great tools that we can increasingly deploy from a tactical perspective and make sure that patients get the full advantage and benefit of this great, potent lipid-lowering treatment.

Peter Dannenbaum
SVP of Investor Relations, Merck

Great. Next question, please, Ivy.

Operator

Next, we'll go to the line of Steve Scala from TD Cowen. Please go ahead.

Steve Scala
Senior Research Analyst, TD Cowen

Thank you so much. I'm curious, how did Merck define adherence or compliance in the lipid trials? And is that a standard validated definition used in similar trials? And I don't know if we're limited to one question, but if we aren't limited, then I would like to ask, are there interim looks at efficacy in the outcomes trial? And could you speak to the split between primary and secondary patients? Thanks.

Dean Li
EVP and President, Merck Research Laboratories

Steve, I'll give you the expert Jeorg Koglin , to go through the details of the clinical plans.

Joerg Koglin
SVP and Head of General and Specialty Medicine, and Global Clinical Development, Merck

The assessment of adherence in our clinical study was based on patient questionnaires. Patients were asked two different questions. They were asked the question, were you able to take the drug reliably? And they were asked to, were you able to adhere? And then there were pre-specified criteria that were laid out in the protocol. We'll publish, of course, the results in the protocol that will be in the New England Journal of Medicine and that will detail that further. Is that a standardized approach? No, this was a more rigorous approach to really address the question, are patients able to use this drug easily? And then we are really pleased with the outcomes and the high adherence rate. We wanted to understand how easy is it to use.

With respect to the outcome study, yep, the protocol pre-specifies an interim analysis after three quarters of the events are collected. The study is now fully enrolled. We designed the study in a way that it includes both primary and secondary prevention patients. Three quarters of the patients in the study, the study has 14,707 patients enrolled. I think that's a number. Three quarters of those patients are primary prevention patients. One quarter are secondary prevention. Sorry, other way around. Three quarters are secondary prevention patients, and one quarter are high-risk primary prevention patients.

Peter Dannenbaum
SVP of Investor Relations, Merck

Great. Thank you, Steve. And to be clear, multiple questions are permitted today because we have plenty of time.

Operator

Next question, please. And again, that is Darwin if you have a question on the phone. And next, we'll go to Jess Meacham from CDI. Please go ahead. Hey, this is Mary Keaton for Jess.

Thanks for taking our question. We'd love to ask a quick one on Winrevair here. How might this new data further strengthen your confidence in the clinical profile and potentially impact its use in clinical practice beyond what we're seeing now, maybe in terms of different care centers or patient backgrounds, which benefit from this strong data? Thank you.

Dean Li
EVP and President, Merck Research Laboratories

Yeah, so why don't I give Joerg a brief chance to talk about the excitement of that pooled analysis that was discussed? And then I'll have Janni talk about how he sees that that might impact the uptake,

Joerg Koglin
SVP and Head of General and Specialty Medicine, and Global Clinical Development, Merck

so when you look at our clinical development program, we had a number of readouts, very positive readouts featured in the New England Journal of Medicine.

You see us starting from the prevalent population in STELLA, expanding to really advanced patients to understand is there a mortality benefit that was at ZENITH, expanding into patients that were just recently diagnosed, also advanced patients to understand how early should you use the drug. So that's the data sets that we have right now. I think Dean in the prepared remarks talked about the new label, the new Winrevair label that we've gotten. This is going to be the first indication that includes a reduction of deaths and the need for lung transplantation in the indication statement. And I think that speaks to the strengths and the uniqueness of Winrevair, achieving something that you don't see with other PAH drugs at this point of time.

Janni Ooshuizen
President of Human Health US, Merck

Yeah. And I'll just add, whenever you strengthen the label like that, it really is useful. It also continues to expand the type of patients being treated, starting to answer questions that maybe previously we didn't answer in full, for instance, in connective tissue disease. So that really does help to continue to expand the treated population. In the US, we obviously had the HYPERION data set pretty much in the initial label, but that is an expansion for the label outside of the US as well. And then to Roger's point, the hard endpoints really, I think, continues to build into the efficacy profile of this product that further increases the confidence in the use of Winrevair. And we do see physicians increasingly starting to use it in patients not on injectable prostocyclins in that dual-treated population is now sitting at about 25%, and we expect that to continue to increase over time.

Dean Li
EVP and President, Merck Research Laboratories

I'll just make one comment. As we're talking about the LDL cholesterol and the silent cardiovascular epidemic, there is a general standardized way to think about guidelines, whether it's in Europe or whether it's in the US. I don't believe the same thing has been done for PAH, but I do believe this data will force the field to reconsider and to come up with very hard guidelines similar to what you see with LDL. So I think this is really important data more broadly to the field. It will trigger the need to come up with very clear guidelines when you have 56% reduction in lung transplantation and death and 51% reduction in mortality. And I believe the field understands it, and they will work with speed to get that done.

Peter Dannenbaum
SVP of Investor Relations, Merck

Any other questions here in the room? Daina?

Daina Graybosch
Senior Managing Director of Immuno-Oncology, Leerink Partners

I have another one on the study. You had this correction in the CORALreef Lipid study. This is Daina from Leerink Partners. It's sort of awkward to have to state the effect twice. Is there anything beyond the awkwardness from that that's a regulatory challenge, or does it suggest anything beyond those five patients? Maybe you can help us better understand what happened.

Dean Li
EVP and President, Merck Research Laboratories

So in principle, when you try to understand how effective is the drug, of course, you look at your LDL lowering across your entire programs. That's actually how labels are written for lipid-lowering therapies. You don't see one LDL reduction. You see the LDL reduction across studies. And so what I think we were trying to describe is we have this consistency in LDL reduction across studies, and we have this consistency between LDL reduction and ApoB reduction and non-HDL reduction.

Those other parameters are also somehow linked with each other, specifically to the lipid study. So we had data handling rules in the SAP that resulted in five out of almost 3,000 patients having these baseline values that were biologically impossible. And following the advice of our scientific advisory board, we performed a post hoc reanalysis. The idea really was we want to understand what's the true effect size, what's the best estimate of the true effect size. And so in the reanalysis, we just corrected these extreme outliers. And we are presenting both the New England Journal of Medicine paper. In the end, we'll describe in more detail precisely what was done. It will be, I think, a very transparent decision. I think the presenter and Ann Marie Navar already did a very nice job in laying that out in a field that I think didn't cause any questions in the scientific community.

Peter Dannenbaum
SVP of Investor Relations, Merck

Great. Any other questions in the room? Ivy, any other questions online?

Operator

We do have two more in queue. Steve Scala from TD Cowen, please go ahead.

Steve Scala
Senior Research Analyst, TD Cowen

Thank you. Can you provide some perspective on the Enlisted Launch curve? Lipitor sold billions by the third year. Should we expect at least that for the Merck drug? And secondly, is Merck working on decreasing the fasting duration, whether it be through additional studies of the existing formulation or perhaps a different formulation? Thank you.

Janni Ooshuizen
President of Human Health US, Merck

I'll let Janni take a stab at the commercial, and I can answer the other one. Yeah. So yes, Steve, thanks for the question. Just given the strength of the data, we do believe that there will be meaningful adoption from the beginning.

Having said that, we are cognizant that there's a few factors that could affect the trajectory upfront, which would be just how quickly can we increase the awareness, how quickly can we create a sense of urgency to more aggressively treat, what is the rate of insurance coverage that we can bring about, and then also just how quickly will the guidelines move in relation to setting some real goals. And obviously, some of those will help the others. So in terms of the trajectory, those are the things that we're taking into account in terms of how we think about the trajectory in the first few years. In terms of where we think we're going to go in terms of peak, we have said that we believe this is a multi-billion dollar opportunity. We feel very confident about that.

I think the data this week further builds into that confidence, and I think that's where we have good alignment on the long-term outlook with analysts in terms of the full potential of Enlisted. Yeah. In terms of what you asked in relationship to the need to take this or the recommendation, I shouldn't say the need, the recommendation to take this in the morning, along the lines that York suggested, we're very comfortable with that clearly. Other sort of descriptive studies might create a better understanding of what the leeway is in relationship to that. I would also emphasize that your last question, I think, related to this is, are we thinking of reformulating or something like that? The answer is no.

With 97% compliance rate and the results that we have consistently, I think that we're extremely comfortable that this is the most potent oral lipid-lowering cholesterol medicine that there is. And so we would not want to do something that disturbs that.

Peter Dannenbaum
SVP of Investor Relations, Merck

Great. Thank you, Steve. Next question, please, Ivy.

Operator

And again, that is Star One if you have a question on the phone. And Courtney Breen from Bernstein, your line is open.

Courtney Breen
Analyst, Bernstein

Thank you so much. Sorry, one more question from our side. And just another question on adherence from a slightly different angle. You've obviously shared with us the adherence for Enlisted in the study. Can you give us any details around the adherence to the statins and other background therapies that patients were being prescribed? How adherent were they to those medications? It would be useful to kind of be able to contextualize that, recognizing we've got some more data on how they're taken in the real world and how representative this patient population is for what we're seeing in the real world today. Thank you so much.

Dean Li
EVP and President, Merck Research Laboratories

Yeah. No, thanks for that question. And I think the implication or the implied need to have these studies in patients where the background therapy is A, optimized and B, stable before they get randomized. We fully buy into this. We had in these 52-week studies very stable background therapies. You also see that when you look at the stability of the LDL levels in the placebo group. I think that is an essential feature of a study that really then is able to test the true effect size of a new intervention, placebo-controlled.

And we feel very comfortable with the cleanness of our study results in that respect.

Peter Dannenbaum
SVP of Investor Relations, Merck

Great. Ivy, any further questions online?

Operator

I am showing no other questions. Thank you.

Peter Dannenbaum
SVP of Investor Relations, Merck

Okay. Anything further here in the room?

Great. Thank you all very much. Dean, any closing comments?

Dean Li
EVP and President, Merck Research Laboratories

Yeah. I would just emphasize that Enlisted, as we have discussed over the years, and many of you have had discussions with me in many different forums, was designed to deliver PCSK9 antibody-like efficacy . And in an easy-to-use pill with a compliance rate of greater than 97%, that has the ability, the potential to be distributed at a global scale. I also think at this meeting, the importance of being antibody-like in design and efficacy really came to the forefront. It was highlighted by other data that was presented in relationship to the monoclonal antibodies.

I will sort of emphasize in that study, they were able to achieve, in general, a 55% reduction in LDL. They were able to drop people's LDL to around 45, not 70, not 90, not 55, but 45. They had important effects in both those patient populations, appropriate patient populations in primary and in secondary prevention. They led to CVOTs or cardiovascular outcomes or reductions of 20-plus %. This is an important opportunity for Merck, but we also understand that the ability to impact the leading cause of death globally, heart attack and stroke, is profound. We are excited by the data that we have shown, and we are excited by the movement of the field to adopt even more aggressive LDL cholesterol-lowering guidelines so that we can address the silent and deadly cardiovascular epidemic. Great.

Peter Dannenbaum
SVP of Investor Relations, Merck

Thank you all very much for your attention here tonight, and appreciate your interest in Merck. Have a good night. Thanks.

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