Cytokinetics, Incorporated

Good afternoon and welcome, ladies and gentlemen, to CytoKinetics' first quarter 2022 conference call. At this time, I'd like to inform you that this call is being recorded and that all participants are in a listen-only mode. At the company's request, we will open the call for questions and answers after the presentation. We will allow for up to two questions per participant. I will now turn the call over to Diane Weiser, cytokinetics Senior Vice President of Corporate Communications and Investor Relations. Please go ahead.

Good afternoon, and thanks for joining us on the call today. Robert Blum, President and Chief Executive Officer, will begin with a brief overview of the quarter and recent developments. Fatih Malik, EVP of R&D, will provide updates related to Omicampton McCarble and Affy Campton. Andrew Kalos, EVP and Chief Commercial Officer, We'll discuss commercialization planning activities for Omicampton McCarble and our franchise strategy related to Affy Campton. Stuart Kupfer, SVP and Chief Medical Officer, will provide an update on Real Dissentive. Robert Wong, VP and Chief Accounting Officer, will provide a financial overview for the past quarter. And Ching Jha, SVP and Chief Financial Officer, will discuss our financial outlook and corporate development strategies. Finally, Robert Blum will provide closing comments and review expected key milestones for 2022. Please note that portions of the following discussion, including our responses to questions, contain statements that relate to future events and performance rather than historical facts and constitute forward-looking statements. Our actual results might differ materially from those projected in these forward-looking statements. Additional information concerning factors that could cause our actual results to differ materially from those in these forward-looking statements is contained in our SEC filings, including our current report, regarding our first quarter 2022 financial results filed on form 8K today. We undertake no obligation to update any forward-looking statements after this call. And now I will turn the call over to Robert.

Thank you, Diane, and thanks again to everyone for joining us on the call today. We had a productive first quarter of the year, and we're moving closer toward our planned transformation to become a fully integrated research, development, and commercial company. Most notably, our NDA for Omicamp and McCarble was accepted for filing by the FDA with a PDUFA date of November 20, I'm sorry, November 30, 2022. Since then, we've had ongoing interactions with FDA to address specific queries, and the team at Cytokinetics has worked diligently to prepare timely responses to their requests. We'll soon meet with FDA in a mid-cycle review of our application, as is customary. And for the most part, queries to date have been administrative or have supported additional requested analyses. The NDA acceptance was also a key de-risking milestone that ungated certain spending related to our measured commercial readiness activities. We've continued to build our teams and create a commercial infrastructure to support the potential approval of Omi Campton McCarville in the near term and also the potential commercialization of Affey Campton following completion of our pivotal trial, Sequoia HCM, and subsequently its potential FDA submission for approval. We're pleased to be attracting very high-caliber talent, and we're hiring individuals who bring with them great experience and expertise. From a clinical perspective, we shared additional data from two new analyses from Galactic HF at ACC, and that add to our understandings of both the clinical and pharmacoeconomic impacts associated with the addition of treatment with omicamptomacarbone when added to standard of care therapy. We continue to believe that omicamptomacarbone can make a meaningful impact on important outcomes when added to standard of care and for the right patient. And we believe that clinical opportunity affords a solid business case for establishing commercial capabilities as well as to serve our cardiac muscle franchise objectives. Building on that theme, during the quarter, we also made significant advances in the development program for Affy Campton, including the opening of enrollment in Sequoia HCM, the pivotal phase three clinical trial of Affy Campton in patients with symptomatic obstructive HCM. As Fadi will elaborate, site startup and activation activities are progressing on pace, as is the screening and enrollment of patients. Following the positive results from cohort three of Redwood HCM shared during the quarter, we're now enrolling patients whose background therapy includes disapiramide into Sequoia HCM, a key milestone and opportunity to include the sickest patients in need of new therapeutic options. We've also opened enrollment in cohort four of Redwood HCM for patients with nonobstructive HCM, an important patient segment representing approximately one-third of the prevalent HCM patient population. At the end of the first quarter, we remain on strong financial footing with over two years of projected cash runway, even as we expect our operating expenses may increase next year. This year will be a transformational one for the company with key milestones across our pipeline. And we're moving closer to making good on our promise to bring forward new muscle-directed medicines for patients with diseases of impaired muscle function. And with that, I'll turn the call over to Fatty, please.

Thanks, Robert. While the NDA is under review by FDA, we are continuing to pursue additional learnings from Galactic HF. Last month at ACC, we presented new data from an analysis of Galactic HF showing that that the effect of treatment with omicamptomicarbol versus placebo on the primary outcome was similar in hospitalized patients and outpatients, indicating that omicamptomicarbol similarly reduced the risk of the primary outcome, both when initiated in hospitalized patients and in outpatients. Additionally, this analysis showed that starting treatment with omicamptomicarbol in the hospital was both safe and well-tolerated, speaking to the ability to initiate omicamps of McCarbell in these patients who are at greater risk for re-hospitalization and cardiovascular death. Importantly, recent public studies have shown that the medications started while patients are in the hospital have some of the best long-term adherence, making these results more significant. Additionally, at ACC, we presented the full results from Meteoric HF, evaluating the effect of 20 weeks of treatment with omicamps of McCarbell compared to placebo on exercise capacity. There was no effect on the primary endpoint, which was a change in peak oxygen uptake, or peak VO2, as measured by cardiopulmonary exercise testing from baseline to week 20. This study joins other studies of heart failure therapies that have shown a positive impact on cardiovascular outcomes, but have not been successful in impacting exercise performance in patients with heart failure. These data further suggest it may be particularly challenging to impact exercise capacity in this patient population, possibly due to comorbidities or deconditioning associated with heart failure. The results from Meteoric do add to the safety profile of Omicamp and McCarble, showing that under conditions of peak exercise, adverse events, including major cardiac adverse events, were similar between the treatment arms. As we stated previously, we do not expect the results from Meteoric HF to have an impact on the NDA currently under review by the FDA. Also during ACC, new joint guidelines were issued by ACC, AHA, and HFSA, including updates to treatment options for treating patients with heart failure and reduced ejection fraction. In particular, the guidelines outline the characteristics of patients with persistent or worsening heart failure whose risks of adverse cardiovascular outcomes are high. Also, SGLT2 inhibitors were added as a fourth class of medication within guideline-directed medical therapy, or GDMT. We believe these updates augur well for the possibility of future inclusion of omicamptomacarbal in guidelines as an add-on therapy to standard of care therapies, particularly in patients with persistent or worsening heart failure who remain symptomatic and whose risks are elevated despite being on GDMT. We continue to prepare for the potential approval of Omicamp to McCarble. On the medical affairs side, we doubled the size of our therapeutic medical scientist team, hired a field director, and began recruitment for our managed healthcare medical scientist team. I'm also pleased to announce that we have two abstracts from Galactic HF accepted for presentation in the late-breaking science session at the European Society of Cardiology Heart Failure 2022, taking place in Madrid from May 21st to May 24th. One is an analysis of the effects of Omicamptive McCarble in patients with lower blood pressure, and the other is an analysis in patients with tricuspid regurgitation at baseline. We look forward to re-engaging with our European colleagues, and we've not seen for some time given the pandemic. Turning to Apicampton, as Robert mentioned, it was a productive quarter for this multifaceted development program. Notably, we opened enrollment in Sequoia HCM, the Phase III pivotal trial of Apicampton in patients with symptomatic obstructive HCM. The COI-HCM will assess the potential of apicamtin to improve exercise capacity, symptoms, and functional class in patients with obstructive HCM, and will employ a personalized dosing scheme to maximize the potential treatment effect and enable patients to reach their target dose quickly. Following the positive results of cohort three of Redwood HCM, we're now including patients whose background therapy includes diazepiramide. Sites across the U.S. are actively screening and enrolling patients, and many others are conducting startup activities. We expect sites outside of the U.S. to begin screening patients in early Q3. Additionally, during the quarter, we opened enrollment in cohort four of Redwood HCM for symptomatic patients with non-obstructive HCM. Cohort four will enroll 30 to 40 patients in an open-label fashion, to escalating doses of afecamptin of 5, 10, or 15 milligrams as informed by echocardiography. While the primary objective is the safety and tolerability of afecamptin, we're also evaluating the effect of afecamptin on left ventricular ejection fraction, New York Heart Association functional class, and cardiac biomarkers, including NT-proBNP. We expect the data from this cohort to inform the design and conduct of a potential pivotal phase three clinical trial in non-obstructive HCM following the completion of cohort four. To remind you, last quarter we announced our plan to begin a second phase three clinical trial of afecamptin in obstructive HCM in the second half of this year. We've received many questions about this planned trial, so let me provide some clarifications. First, this trial was not requested by FDA, and Sequoia HCM remains the sole pivotal Phase III trial with which we believe we would submit for approval of Avicampton. Second, the goal of this additional Phase III trial is to better understand and position the use of Avicampton relative to standard of care therapy. As such, it will not be a head-to-head trial against Mavicampton. We believe we have an opportunity to advance the field with a next-in-class drug candidate by pursuing important scientific questions, and this trial, along with others we may conduct, may address questions important to understanding the use of a therapy with a new mechanism of action in patients with a spectrum of disease severity and background therapy. Often these trials await initial drug approval, but we're confident in Apicampton and believe it's advantageous to embark on these studies sooner. We know there's greater interest in the design of this trial, and we plan to share more detail later this year. Towards our goal of sharing longer-term data on the treatment of afecamtin in patients with obstructive HCM, we're pleased to announce that the first data cut from the open-label extension of Redwood HCM will be presented in a late-breaking science session at the Heart Failure 2022 meeting in Madrid. This interim look will include data from up to six months of treatment with afecamptin. Patients continue to be treated with afecamptin in the open label extension, and further analyses of these data are still forthcoming later this year. Looking beyond afecamptin, we're pleased to see that FDA recently approved Mavicamptin for the treatment of patients with obstructive HCM, making it the first medical therapy for HCM to be approved by the FDA. We'd like to offer our congratulations to the teams who work to bring this new mechanism of therapy to patients and take pride in this milestone given our discovery role for the program. This is a milestone for patients with HCM who have been in desperate need for new therapies to address the heavy burden of symptoms they endure. We also believe this milestone approval will provide context for our own potential differentiation of afikampton following results from our pivotal trial. With that, I'll turn the call over to Andrew to provide an update on our commercial writing activities and planned cardiovascular franchise strategy.

Thanks, Patty. During the first quarter, we continued to build out our commercial capabilities and organization. We began hiring our first-line field-based sales force leaders, as well as filling key positions across marketing, market access, sales, and commercial operations. We've selected a patient support service partner, continued payer interactions, and activities supportive of deploying our field force. As we continue engaging with payers, we are mindful of the critical importance of the potential value proposition for Omekemptive McCarble. Recently at ACC, we presented data from a healthcare resource utilization analysis from Galactic HF, showing that among a subgroup of patients, treatment with Omekemptive McCarble reduced resource intensity measured by total days in the hospital. The estimated potential cost offset was $3,085, or 19% per patient, and 99% of the cost reductions were due to heart fire hospitalization among those treated with Omicamp or McCarble. Of course, there are limitations to these data, as its relevance will be payer-specific. However, if we consider the payment reduction that hospitals face for 30-day readmission for Medicare patients and the fact that the prevalence of heart failure is increasing, this potential reduction in hospitalizations and their associated cost underscores the types of potential economic value propositions from McCamp and McCarvel that we will continue to assess to inform strategies. Also during this quarter, we signed a master supply agreement for drug supplies. initiated several major digital system programs, including enterprise resource planning and serialization, and hired key supply chain leadership roles. We also completed a risk assessment of our end-to-end supply chain and advanced appropriate mitigation actions. As we have said, our growing cardiovascular commercial infrastructure, supportive of the launch of Omecampt of McCarble, will be leveraged for the future potential commercialization of Apicanton, With increased awareness in the market of HCM and the clinical utility of cardiac myosin inhibitors, we are confident in the opportunity we have for the future potential launch of our next in-class therapy. With key properties that may impact ease of titration, reversibility, and the ability to reach target concentrations rapidly, we look forward to leveraging our commercial organization and synergies within the treatment community. And with that, I'll turn the call over to Stuart to provide an update on REL deceptives.

Thanks, Andrew. In the first quarter, we continued enrolling patients in Courage ALS, the Phase III clinical trial of REL deceptive in ALS. Enrollment has been progressing well, with over 70 centers activated in the U.S., Canada, Australia, and Europe, and more than 150 patients enrolled. Core to our ethos and essential to our mission is the conduct of rigorous and disciplined clinical research. We are pleased to have enrolled the most ALS patients into recent clinical trials at any company, even before Courage ALS, which is planned to enroll 555 patients. The primary endpoint to the trial is a change from baseline to 24 weeks in ALS FRS-R, an endpoint deemed clinically relevant in both FDA and EMA guidances to evaluate a treatment effect on function of daily activities in ALS. The main secondary endpoint is a combined assessment of function and survival, which is a joint rank test of ALS-FRS-R total score, time to onset of respiratory insufficiency, and survival time up to 24 weeks. Other secondary endpoints include change from baseline to 24 weeks for a vital capacity, the patient reported outcome questionnaire ALSAC 40, and bilateral hand grip strength. Reflective of our focus on patient centricity, we designed Courage ALS with important input from patients and caregivers to optimize the patient experience and reduce their burden, including many remote visits. Additionally, to ensure patients can continue therapy with background medicines, patients who are currently taking stable doses of riluzole and or adarabone are permitted to enroll, and the randomization is stratified accordingly. We also plan to provide continued access to rel-deceptive to patients who complete Courage ALS in an open-label extension trial. Furthermore, patients in Courage ALS, as well as patients who participated in our prior ALS trial, we'll have the opportunity to enroll in a managed access program developed with the objective to ensure safe, ethical, and equitable access to relative symptoms. In face-to-face meetings with investigators and patient advocates, we have received enthusiastic support for the patient-friendly protocol, Encourage ALS, which is built on the solid foundation of our large and robust Phase II trial, Fortitude ALS. Later this year, we expect the Data Monitoring Committee to conduct the first interim analysis in the Courage ALS trial, which will assess for futility and is triggered 12 weeks after approximately one-third of the planned number of patients is randomized. A second interim analysis will also assess for futility, and there will be an option for a fixed increase in total enrollment, if necessary, to augment statistical power of the trial. ALS is a devastating disease and no one knows that better than patients and their caregivers. They are desperate for new options and therapies. It is our mission to bring forward a new therapeutic option through high-integrity research and diligent investigation. And with that, I'll turn it over to Robert Wong.

Thanks, Stuart. We ended the first quarter with approximately $686 million in cash and investments. Our revenues in Q1 2022 came from Astellas to co-fund Courage LS. Our first quarter 2022 R&D expenses increased to $45.9 million from $31.6 million in the first quarter of 2021, primarily due to increases in spending on our cardiac myosin inhibitor programs, our new headquarter facility, and our skeletal muscle program. More than 55% of our R&D expenses were attributable to our cardiovascular programs, as expected. given activity for the cardiac myosin inhibitor program, and the remainder of our expenses were attributable to our skeletal and early research activities. Our first quarter 2022 G&A expenses were $33.1 million, up from $15.6 million in Q1 2021, due to higher commercial readiness spending and higher personnel-related costs, including stock-based compensation. And now, Ching will review our financial outlook and corporate development strategies.

Thanks, Robert. Our end-of-quarter cash balance of approximately $686 million is inclusive of the $200 million in payments we received from Qijing and Royalty Pharma from the transactions announced in December last year and January of this year, respectively. Our balance sheet could be further bolstered by our deal with Royalty Pharma which affords us access to long-term capital of up to an additional $300 million, subject to certain conditions, primarily to support the potential commercialization of Long Beach Hampton McCarvel and further development of Abbey Camden. Our approach to building a commercial infrastructure will remain prudent with spending tied to key de-risking milestones. Given our plans to only hire our sales force after potential NDA approval of Omicam to McCarville, we expect a slower ramp up in commercial spending in 2022. If Omicam to McCarville receives approval in late 2022, we expect a more significant post-approval related increases in spending in 2023. Our corporate development strategy remains focused to partnering and longer-term strategies of sensibly building our organization. During the quarter, we continue business development interactions focused to potential partnerships in Asia and Europe. First, we are seeking a potential partner to facilitate the launch of Omicante McCarver in Europe. As we focus our own U.S. launch, having a partner to commercialize Omicamptom-Macarbo in Europe could afford an on-ramp for us to build our own capabilities in Europe in order to support the future commercialization of Epicamptom ourselves. In Japan, we are looking to partner both Omicamptom-Macarbo and Epicamptom together with a partner commercializing both potential medicines. similar to how we partnered both with Xi Jinping and in China. We have a history of strong deal-making and look forward to continuing these interactions with potential partners with the objective to close one or more deals this year. And with that, I'll turn the call back over to Robert Blum.

Thank you, Ching. So as you've heard, we began 2022 with important progress across our late-stage pipeline as well as impressive growth across our organization to support the potential approval of Omicamp to McCarville later this year. We recently surpassed 300 employees and I'm pleased with the caliber of talent and the expertise we're building across the organization. Candidates are excited to join our team given our leadership in muscle biology and the promise of our potential medicines. I want to take this opportunity to thank our employees for all that they are doing to build a next great biopharmaceutical company. We recently conducted a comprehensive employee survey and had 98% employee engagement, underscoring our highly committed employees who care deeply about doing impactful work on behalf of patients. During the quarter, we also continued intensive work towards our goal of advancing earlier stage drug candidates including CK136, our cardiac troponin activator, as well as other muscle-directed compounds into IND-enabling studies. Our cardiovascular pipeline continues to expand with novel mechanism drug candidates leveraging over two decades of our pioneering leadership in muscle biology and pharmacology, and more to come on those programs soon. At the leadership level, we recently announced changes to our board of directors. Dr. Pat Gage, who served as our chairman of the board since 2010, retired from the board. This was a planned transition announced over a year ago. His retirement was a personal decision, and he departs with our utmost respect and admiration. We thank him for his many years of service to our board. Upon Pat's retirement, Dr. John Henderson was named the new chairman of the board. John has served as a member of our board since 2009 and we're confident he will lead with discipline and a strong vision for the company in his new position as chairman. Additionally, we appointed Dr. Bob Harrington to our board. Bob's appointment follows the resignation of Rob Califf from our board, which was prompted by his being named FDA commissioner. Like Rob, Bob is a cardiologist. Bob is also chair of medicine at Stanford and with a distinguished academic career, bringing broad experience, having overseen dozens of global cardiovascular clinical trials. We're very pleased to welcome Bob to our board. Finally, As Ching elaborated, our recent and second deal with Royalty Pharma not only extends but also expands our partnership and provides ample runway to execute on our commercial and clinical plans in a prudent yet purposeful manner. As we continue to execute against our vision 2025, our ability to monetize our pipeline in order to realize our ambitious goals remains mission critical. This newer deal is consistent with our corporate development strategies to affordably enable our transformation to a commercial stage company while also continuing to accelerate our development plans. Now, I'll recap our key milestones for 2022. For Omicamp de McCarble, we expect to launch Omicamp de McCarble in the U.S. pending potential FDA approval in Q4 2022. For Afikampton, we expect to continue enrolling patients with obstructive HCM in Sequoia HCM throughout 2022. We expect to continue enrolling patients with non-obstructive HCM in cohort four of Redwood HCM, and we expect to begin a second phase three clinical trial of Afikampton in obstructive HCM in the second half of this year. And as you heard from Fatty, we expect to share data from Redwood HCM OLE, the open label extension study of Afikampton at the Heart Failure 2022 meetings later this month, May 23, 2022. For CK136, We expect to reactivate that development program in this year. For rel-deceptive, we expect the Data Monitoring Committee to conduct the first interim analysis from Courage ALS in the second half of this year. And for our ongoing research, we expect to advance new muscle-directed compounds and to conduct IND-enabling studies for one to two potential drug candidates. And operator, with that, we can now open up the call to questions, please.

Thank you. Ladies and gentlemen, in order to ask a question, you will need to press star 1 on your telephone. And to withdraw a question, press the pound key. Please stand by while we compile the Q&A roster. Your first question comes from the line of Carter Gold of Barclays. Your line is open.

Good afternoon, guys. Hey, great. Maybe good afternoon. Maybe to start with for Robert and Fatty, probably an appropriate opportunity to get you guys to comment a bit on the Mavikampton label and pricing, and specifically as you think about implications for differentiation and the market opportunity. I know, Robert, you never kind of explicitly guided on pricing assumptions, but it does appear directionally higher than we and much of the street had expected. We'd love to get your thoughts on those topics.

Sure, so I'll start and maybe turn to Fatih, and also we should ask Andrew to comment, especially as your question pertained to pricing. Firstly, we want to congratulate BMS and all the colleagues at Myocardia for this approval, but also the HCM patients, the clinical investigators, the advocacy groups, and everyone else that participated. And that includes cytokinetic scientists who conceived of the therapeutic hypothesis, for cardiac myosin inhibition and who participated in the discovery of Mavacamtin. This is a meaningful milestone for the fact that it's the first drug approved with an indication of obstructive HCM and the data from EXPLORER are surely compelling. With that said, as others have commented, the label is now in the public domain. And there are things about that label that we think make sense and things about that label that enable a next-in-class opportunity to potentially demonstrate differences. That's why we're doing Sequoia HCM, and we hope Sequoia HCM will elaborate on what could be next-in-class properties purposefully engineered into AFI Campton long ago. You asked about pricing. And yes, I think the pricing did come in higher than was consensus, and we were within that consensus expecting price to be different. But with that said, I think pricing is now coming in as is more comparable to surgical interventions. When you consider the number of echoes that need to be performed both to get to a steady state target dose, and also a maintenance program for Mavacampton. The costs are even in excess. And we would expect BMS knows what they're doing. They have done their payer research. They've done their work around the pharmacoeconomics. And despite what ICER came in with, I expect BMS understands where the market clearing price will be. And at the same time, I expect from the standpoint of patient assistance and contracting, there's going to be programs that will be elaborating on how that could still result in lesser net costs to patients and also as would be assisting in reimbursement. So I think this is all still to be playing out in connection with what I'm sure will be sensible commercial launch plans that BMS is already implementing. So maybe with that, I'll ask Fatty or Andrew if there's anything further they want to elaborate.

Well, maybe I'll just expand a little bit on Appy Campton and how we have developed it and what we think it may provide in terms of convenience for patients and safety and so forth, you can sort of do your own comparison. But I'll just say, you know, with Apicampton, the way Sequoia is designed, dose escalation should be complete within six to eight weeks. We don't anticipate dose interruptions if EFs are less than 50, as long as they're greater than 40, but merely dose-down titrations. And so hopefully those data from Sequoia as well as from the ongoing open label extension would support a simple escalation scheme that's completed within six to eight weeks. ApiCAMPTN was engineered to avoid drug-drug interactions, and to date we haven't uncovered any significant drug-drug interactions with ApiCAMPTN. We've shown the reversibility of effect in data that we've presented from Redwood, which I think enable its type traitability and also provide a means to safely escalate or deescalate dose. So those are the things I would highlight. That and I think as well as the conduct of Sequoia, we're studying it in both monotherapy with other drugs like beta blockers, calcium channel blockers, dual therapy with those drugs, or with diacetylpyramide and beta blockers as background therapy. So, I think we'll have a fairly good understanding of how it performs in those various different conditions.

Andrew, anything you want to add? This is maybe very quickly on pricing. I won't say much about, obviously, BMS's strategy more than, as Robert stated, maybe came in slightly higher than we were expecting. It'll be interesting and we'll obviously look how the market reacts, meaning payers. If there's more controls they would put in place, things like prior auths to label or step edits through beta blockers or calcium chattel blockers. So those types of things we'll see. It did come in flat pricing, meaning every dose is the same price, which is as we expect it. And there could be further cost in terms of support programs and room to negotiate. I think these are all the factors that likely went into it, but we have some time. We'll continue to evaluate the market and see how we net out from a labeling point of view as we decide our pricing in the future. Thank you.

Thank you, Carter.

Your next question comes from the line of Jason Butler with JMP. Your line is open.

Hi, it's Roy in for Jason. Thanks for taking the questions. First one, a couple clarification questions. Confused by Fatty's comments about the second obstructive HCM phase three that's going to start in the second half. It said it's not going head-to-head against Mavacamptan, but against a drug with a novel mechanism. Can you just clarify that? Presumably, it's an approved drug. Is that correct?

That's not exactly what he said, but maybe he can elaborate.

Okay.

Yeah, no, it's... What I said, it would be a standard of care therapy, so I didn't elaborate on the design of the second trial. I just said that it wouldn't be against Mavacamptan, and it could be against standard of care or other aspects of the disease.

Got it. Okay, that makes more sense. All right. Is finalizing the trial design, is that all that's gating to starting that trial now?

I wish starting trials were that easy, but no. And once we finalize the trial design, you know, there are operational things such as IRB submissions and regulatory submissions and so forth. Then we probably will also ultimately have an interaction, regulatory interaction as well. So there are a few things ahead of beginning enrollment, but we've got all those under control.

Okay, great. And then on Courage ALS, you mentioned increasing the enrollment size. Can you do that at both of the interims? And then I guess in the event of stunningly good data, could the trial be stopped early for efficacy? Thanks.

Hi, this is Stuart Kupfer. Yeah, thanks for the question. So the first interim analysis is for futility only. there's not an option for upsizing the trial. But that is an option for the second interim analysis. In terms of stopping for, you know, efficacy, the second interim analysis essentially has quite a broader range, includes futility and potentially stopping for superiority. But, you know, that's a very high bar. So that's not something we're necessarily counting on. Yeah.

Okay. Thank you.

Thank you.

Your next question comes from the line of Joe Pan-Guinness of HC1, right? Your line is open.

Hi, Joe. Hey there. Good afternoon, everybody. So I also wanted to stick with courage. So very encouraging, the enrollment that you're seeing, but also a bit disquieting because of the underlying indication that the demand remains high. So I just wanted to focus on the interim as well and maybe overall. Are you disclosing or can you remind us what the alpha spend is for each of the interim analyses and overall what the hurdle is?

We haven't really disclosed those details. What I think we can say is that for this first interim analysis for utility, It's not really a high bar to continue the trial. So we're confident that we'll be proceeding past that interim analysis.

And what we've said is that the relative sedative treatment arm would have to do worse than the standard of care for us to meet the futility threshold for the first interim. And that's, again, as Stuart points out, that's a low bar for what we already know. The second interim does provide for early stopping for futility or otherwise allows us to increase the size if we wanted to amplify on a signal observed, albeit that would be blinded to us. And that would be determined by the data monitoring committee. So we have not disclosed to your question any of the alpha spent.

Just to be clear, for futility, there never is alpha spend, so there's no alpha spend on any of the futility analysis. It's only with regards to efficacy if you decide to include that.

Got it, got it. Thank you for the clarification. And then just on omicamptive, the quicker part of the question is, and I know, Robert, you said it's pretty much administrative back and forth with the FDA right now. Do you consider any of the back and forth rate limiting at this moment, and then do Secondly, with regard to Omicamptive, I wanted to focus on just the meteoric data. Any learnings that you would point to that allow for the potential of, say, tweaking of the population or the protocol, or is that potential path closed at this point?

I'll take the first one and maybe ask Fadi to speak to the second one. Regarding your question about the back and forth, the interactions with FDA, No, I don't consider any of them to be rate limiting or to affect the timeline for review and approval. These are interactions that I believe are customary for an application of the sort that we submitted, and therefore I think we remain on the same timeline.

And the second question with regards to Meteoric, you know, I don't think that... we haven't really identified a subgroup within the meteoric population where we could confidently say that there is a large treatment effect that would warrant, you know, redoing the trial per se. That said, you know, within meteoric, we didn't enroll very sick patients. They were really kind of the opposite of what we enrolled in galactic. And so one could ask if you were able to conduct the trial in much sicker patient population, might you see an improvement in exercise capacity? And I think it's still an open question, but I think it's unlikely we'll pursue it. A lot of operational challenges or something like that. Of course.

Thanks for the added color, guys.

Thank you. Thanks, Joe.

Your next question comes from the line of Akash Diwari of Jefferies. Your line is open.

Good afternoon, Prakash. This is Amy. I'm for Prakash. Thanks so much for taking our question. Just a couple. So the first one, if we look at MAVA's label, it seems like the benefit from MAVA was smaller impatience on background beta blocker compared to those who weren't. Why do you think we're seeing this type of phenomenon? Can it be that Patients, you know, on beta blockers at baseline may have lower LVF to begin with, which could potentially limit MAVA's ability to updose. And where do you think AFI could potentially differentiate? And also, what are the implications, you know, for physicians when it comes to concomitant use given this phenomenon?

Good questions. These are some of the observations that came out when these data were presented and published. Maybe I'll ask Fatih if he wants to comment on that.

Let me just generally comment on the challenge of beta blockers and trials of exercise performance. You know, Meteoric also had almost 90% of the patients who were on beta blockers, and they have two different effects, right? They limit the amount that you can increase your heart rate, which is important to increasing cardiac output, and they also act on skeletal muscle and decrease its ability to exercise as well. And so in the context of hypertrophic cardiomyopathy, Mavikampton demonstrated improvements in exercise capacity in patients with beta blockers, albeit the effects were attenuated, not surprisingly, because of the combination of those two therapies. You know, I think the real question to ask is in the context of using a cardiac myosin inhibitor, is the beta blocker therapy really needed? And ultimately, is that something that physicians need to institute in their patients? And might they maximize their treatment benefit and their quality of life eventually by substituting a myosin inhibitor for a beta blocker? So those are important research questions, as you can imagine, and I think will unfold and the answers will unfold as time goes on.

Great, that's super helpful. And then another one, MAVA seemed to show greater benefit in NYHA Class III patients in Explorer. How do you think afacantin can compare relatively to MAVA in severe patients?

Again, we're not doing a comparative trial, and so it's going to be very hard to compare exact numbers from one study to the other, given the populations, will be somewhat different. I would comment generally that I think sicker patients generally will achieve greater benefits. They have a greater symptomatic burden, greater exercise burden. There's more room, if you will, for them to improve. And so it's not surprising, if you will, that the more severely affected patients have a greater treatment effect. Okay, got it.

Your next question comes from the line of Salim Syed of Mizuho. Your line is open.

Hello, Salim.

Hey, Robert. Thanks for the question, guys. Just a couple from me. The first on Mavic Hampton. Robert, I'd love to know now that we have a price tag in the marketplace for Mavicampton, if I'm just running some basic math here, when I look at consensus peak, Mavicampton currently has peak around $3.5 billion. And Aficampton, the best I can tell, it's closer to around $1.5 billion. So that's about $5 billion. And those are worldwide numbers. But now that we have price in the market, just using that $90K price tag and the the number you have in your slides for 190K obstructive patients, symptomatic, just in the US, obviously you get to TAMs here that are much larger, even if you assume a 40% growth to net and 80% compliance. So just curious here, how are you thinking about TAM now, that there's a price in the marketplace of how TAM could mature here for this particular disease?

If you're asking us if there appear to be discrepancies between those underlying assumptions and the consensus estimates, I think there are. And I think you've pointed that out already in some of your notes. I think that now that we have a price as set by BMS, it's an opportunity for analysts and investors both, but also for us at Sato Kinetics to consider how we think about this market opportunity. And we will, but in line with data. And, you know, we're still enrolling patients in Sequoia, so it's really premature for me to be too elaborating on what I mean by that. In time, I think this will all play out, and, you know, we continue to believe that a next-in-class opportunity can become the category leader.

Do you think there's potential here for this to be a $10 billion plus market?

I'm not going to speak to that. I do think that where this market ultimately will go will benefit from what will be category expansion, patients who are not currently diagnosed and treated getting diagnosed and treated, and ultimately this mechanism of action should hopefully translate beyond obstructive HCM to nonobstructive disease including segments of patients with HEPPATH. So ultimately, I think there's opportunity, very meaningful opportunity, for this to be a big business.

Okay. And just a quick one just on the REMS and how you guys are thinking about base case here for cytokinetics and afikantin. I know it's early. You don't have phase three data yet. But based on what you've seen from the profile for afecamptin in redwood and the shower PKPD, the shorter half-life, there being mechanistic rationale as to why you would see less toxic ejection fraction levels, what is your base case on REMS? Do you guys think that you can – is there a possibility here that you don't have a REMS?

Yes. Here again, I'm not going to make a comparative statement, but You know, as we think about Afikampton and an independent drug development program, and for the safety data we've already seen in Redwood HCM, one wouldn't necessarily expect a REMS, albeit there are things that we have to demonstrate in Sequoia HCM in order to be able to ensure that. So we're approaching Sequoia HCM with the goal of elaborating on what could be the next-in-class properties as could be affording a safety profile that would be potentially not requiring a REMS.

You know, Salim, I think it's also important to remember by the time we hopefully come to market that this is no longer going to be a new drug class, and physicians will be more familiar with the use of a cardiac myosin inhibitor. Obviously, there would be differences between different different drugs and the need to educate on those differences. But, you know, it's not a first-in-class entry, and so that may also temper the need for REMS. Super helpful. Thanks so much, guys. Thank you, Salim.

Your next question comes from the line of Madhu Kumar of Goldman Sachs. Your line is open.

Hello, Madhu. Good afternoon. This is Omari . So we have a couple questions. First, what kind of data should we expect from the Redwood Oily at Heart Failure 2022 in May? It says end points and average time to follow up. And then remind us how the echo monitoring works in both Redwood Oily and Sequoia HCM and how they're similar or different from prior and ongoing trials of other mice in a hindrance in OECM. And then I have a second question after that.

Sure. So obviously, we don't want to do anything to jeopardize the presentation of the data by elaborating on what you should expect. But it is a study that now enables a longer durability effect to be observed. And our goal is to be able to demonstrate that with Affy-Campden, one can achieve effects that are continuing. So you'll see data pertaining to the use of Affy-Campden as is as Fadi elaborated, out to six months. And I'll turn to Fadi now if there's anything more he wants to add.

Yeah, I mean, I think you can expect the kinds of things we've presented in the past, which have to do with gradients and EF and safety, NYHA class, things like that. So I think, you know, you'll see as a first presentation, we'll probably focus on the same themes that we've elaborated on in prior presentations. Your second part was to do with echo monitoring, and I'll say that the general scheme in all our trials is the same. Patients come in at least every two-week basis for an echo and potential to be escalated to the next dose. In the OLE right now, we're restricted to doses of 5, 10, 15 milligrams. In Sequoia, the top dose is 20 milligrams, so it's 5, 10, 15, and 20. And EOLE is only restricted because of the need to amend the protocol to allow for the higher dose, which we're in the process of doing. So the dosing is quite similar amongst all the trials that we're doing.

And I'll add an additional data set we will be capturing in OLE as well as sequoia is cardiac MRI data, evaluating cardiac structure, function, and fibrosis. So that will give us an opportunity to evaluate for reverse remodeling.

But it will be premature to see that at this upcoming Congress, so.

Great. And then second question, what kind of patient subsets in NHCM will be most amenable to a myosin inhibitor, given the history of the class in MAGIC trial?

What types of patients would be most amenable to benefiting from a myosin inhibitor?

That's correct.

I think in NHCM. In NHCM? Oh, in NHCM. Okay. I was trying to source it out well. You know, I think there are a few things that define the NHCM patient. One, obviously, is the thickness of their ventricle. The second is their biomarkers that indicate a ventricle under stress, like antipropion P or troponin. And the third is a functional and symptomatic domain, how severe are their symptoms or how impaired is their exercise capacity. You know, I think just an echo that shows that you have a thickened ventricle and maybe a family history of HCM isn't necessarily adequate for, at least at this point in time, for thinking about initiating therapy with the myosin inhibitor or any therapy at this point. Most of the therapies are being studied in symptomatic or functionally limited patients. And so that's, you know, what I would think of as a population that could be studied in future trials.

Great, thanks for answering the questions. Thank you.

Your next question comes from the line of Yasmeen Brahimi of Piper Sandler. Your line is open.

Hello, Yasmeen. Hi, this is Swapnil on for Yasmeen. A couple of questions for us. First one is, we see that the Marwak-Hampton label has shown that the drug might be related to embryonic and fetal toxicity. So do we know, like, if this is a myosin inhibitor class effect and, like, what work has been done with Effie-Hampton to rule out this tox? And the second question is regarding the second phase three trial for Effie-Hampton. Although it's not a head-to-head myocampin, are you saying, like, it would be more oriented towards more severe patients, like, who are subject to septal reduction therapy and the trial would be somewhat similar to the valorethium trial? Thank you for taking our questions.

Yeah, so I'd rather talk about Afikampton than Mavicampton. So with regard to Afikampton, if your question is might we anticipate any of the repro talks or I'll extend that because we've been asked any of the DDIs. Maybe I'll ask Fatty to elaborate on what we know and what we still need to learn.

Sure. I mean, you know, we've conducted embryo fetal toxicity studies with Afikampton They don't indicate any direct toxicity of afikemptin on fetal development. Any drug that has the potential to make the mother, the maternal host, sick, as a cardiac myosin inhibitor can at higher doses, can certainly cause fetal toxicity as a secondary effect. But we don't see any direct fetal toxicity And then with regards to your second question with respect to the profile of patients in Sequoia, we have biased the entry criteria to hopefully enable us to enroll a patient population that is a bit more Class III, that's a bit more functional.

That's the second trial, second Phase III.

Oh, the second Phase III, more severe. Okay. Well, we're not really commenting on that particular design. I can't really answer your question, but I could certainly have done that first one, so I'll leave it at that.

Got it. Thank you. Thank you.

Your next question comes from the line of Dane Leone of Raymond James. Your line is open.

Hello, Dane. Hi, guys. Thanks for the questions. This is Sean on for Dane. Just since we're at the end of the call here, just a couple quick ones from us. One, can you comment on the enrollment rate for Sequoia to date and how you would expect that to be impacted by Mavikampton hitting the market? And then second, just a clarification on your OpEx for the year. You previously got it to upwards of $380 million, but it seems like maybe it could be coming down. Just a clarification there.

Sure. So with regard to the first, you know, Sequoia HCM just opened. We are in the process of convening investigator meetings. U.S. meeting recently having been held and others to follow. It's premature to comment yet on enrollment. It's probably better to ask, you know, how are we doing on activations and initiations? And all that looks good according to plan. I don't know if, Fatty, you or Stuart want to add anything to that?

Yeah, it's too early to tell to, well, it's not too early to give you a sense of how fast it's enrolling since enrollment's early. I just will say the investigator enthusiasm has been very high, and obviously people are excited also about the availability of Mavicampton, but the Enrollment in Sequoia presents a unique opportunity for the patient to advance the field and ultimately have access to Avicampton and an open-label extension, and that's going to be attractive to many patients, I think, as well. I should also emphasize the trial will enroll in regions outside of the U.S. where there is no Mavicampton availability, and ultimately I think it will enroll quite well.

When we indicated we thought that this study could enroll within about a year, it was with full expectation that Mavacamden was going to get approved in the U.S., and the approval doesn't change our view towards that enrollment rate. Your next question was about OBEX. I'll turn to Ching maybe to answer that one, please. Sure.

So you're right. We guided that for the year, we expect the cash burn to be in the range of $365 to $385 million. Of course, the first quarter numbers were lower than if you were just take that number and divide it by four. But that's not really how we planned for OPEX for this year. As we elaborated earlier, we're building our commercial organization and capability based on us achieving certain milestones throughout the year. So naturally, as certain people get hired throughout the year, they're going to carry more costs towards the second half of the year compared to the first half of the year. So do expect the quarterly spend to ramp up from the first quarter numbers.

Great. Thank you. Thank you.

Your next question comes from the line of Justin Kim of Oppenheimer. Your line is open.

Hello, Justin. Good afternoon. Hi, Robert. Thanks for taking the questions. You know, just maybe just to elaborate a little bit further on some of the questions already asked, but, you know, with the recent approval and labeling of NAVA seeming to suggest the importance of continued development and additional populations, just curious whether it's reasonable and maybe even prudent to expect further trials even beyond a second study in symptomatic HCM, just given the fact that there are a number of different populations that could see benefit.

Yeah, so Justin, you were at the American College of Cardiology meetings. I saw you there. And as you saw, there's quite a lot of enthusiasm for this new mechanism, and as will likely make a meaningful difference in these patients and how they're treated. And it's not just as would be explainable by Explorer and Sequoia. And you're right, there should be other studies even going beyond what we're contemplating with the second phase three study. Whether those are pre-approval or post-approval, it's more likely they're post-approval, we hope anyway, in light of our timelines. But we already are thinking about other studies we might should be doing in connection with AptiCAMPT and beyond the two phase three studies we're talking about.

Okay, great, great. And maybe just one more on the sort of line of the REMS program requiring echocardiography every 12 weeks. Just curious any sort of maybe more direct thoughts in terms of how the team thinks that may change broadly for myosin inhibitors or maybe specifically to Sequoia's design for AFI and how that might change in the long run.

You understand anything we might say right now is speculation for the fact that we're still doing a phase three study. But, you know, we haven't been requiring of the number of echoes as is currently contemplated by the Mavicampton label. While it does take a couple of echoes to get to a starting dose for Aficampton, that can happen within a few weeks as opposed to a much longer period of time and therefore we haven't had any of the dose discontinuations or interruptions. Our expectation is if we continue to develop afecamptin the way we have, one shouldn't require the kind of frequent echo monitoring. But that's still to be determined and we haven't done the trial yet and we have to demonstrate that with clinical evidence. Patty, I don't know if there's anything more you want to add.

You know, I just think, again, it's going to be looking at the need for continued monitoring in the context of long-term treatment with Afikampton and the open label extension, as well as what emerges from Sequoia. So, you know, as Robert said, data will inform eventually what the label will look like.

Okay, great. Thanks so much.

Thank you.

Your next question comes from the line of Charles Duncan of Cantor Fitzgerald. Your line is open.

Hi, this is Robert. Good afternoon. Good afternoon, Robert. This is Pete Sabrablosan for Charles. Congrats on all the progress this past quarter. So one of our questions is, you know, what are the plans or expectations for an OMI ad comms? And what would you expect the key points of debate to be, you know, especially with regards to the burden of disease in patients with injection fraction, say, less than 30%?

So as we've communicated previously, we're not anticipating an adcom for omicamptive in connection with the NDA as was submitted and now on file. And that's as was communicated to us by FDA and as reflected in our public announcement. That's not to say it won't happen and in fact it possibly could, but we don't expect it and we have no reason to assume it will occur based on anything that's transpired since then. So we continue to believe that this application will be reviewed absent an adcom and we're focused on the PDUFA date later this year. And your second question?

And the second question is, you know, with the date coming up in November, you know, what do you think is required to be in the product label for only to sort of become part of the treatment guideline?

That's a very good question. The treatment guidelines are providing for both foundational treatments but others that could be add-on therapy, and maybe I'll ask Fatty and Stuart to speak about what came out in the guidelines, and what that could foretell were omicamptamicarbo to be included in guidelines.

Yeah, I think, you know, with the guidelines, certainly specify foundational therapy with four classes of medication, beta blockers, a RAS inhibitor, an MRA, and an SGLT2 inhibitor. But not all patients can tolerate all four classes. Not all patients are adequately treated. They may still have symptoms. They may still end up in the hospital. And so the guidelines also specify a number of add-on therapies or therapies that may be supplemental to those in certain scenarios. And I think Omicampto should be one of those. And the data that we've generated in Galactic and subsequently in the analyses that we've published you know, indicate that sicker patients benefit, even to a larger extent, from apicamptin, and presumably the guidelines would reflect that.

All right, thank you. Thanks for taking our questions.

Thank you. Thank you.

Your next question comes from the line of Serge Villanger of Needham & Company. Your line is open.

Oh, Serge.

Good afternoon, Robert. Just a couple of questions regarding plans for a European partnership. I think you reiterated your willingness to partner Omecantive and kind of hold on to African rights. Just want to make sure that I got that right. And then maybe just highlight for us Timelines for European approval of Omicampton and how you see that market opportunity relative to the U.S. opportunity. Thanks.

Sure. So I'll speak to this and maybe ask Andrew also to address the latter part of your question. Yeah, we continue to focus to the partnering of Omicampton and McCarville in Europe. It's in part because we're going to be plenty busy. with our focus to Omicampton, McCarville in the United States and our development of Affycampton. And we're sobered to the reality of what it takes to be successful in Europe. And we've done under Andrew's supervision exercises and planning to understand what peer group companies have done and what we think is practical from our standpoint. And you got to walk before you can run. With that said, there's a compelling opportunity for Omicamp to McCarville in Europe, like in the United States, but it's obviously a lesser one in light of what we imagine would be some of the market access challenges and also pricing. With that, maybe I'll turn it to you, Andrew.

Yeah, Robert, I think from an opportunity point of view, the prevalence in Europe is slightly higher in terms of total number, not by much, so it's similar to U.S., but obviously price is a good bit lower So that's really what affects the overall opportunity from a European point of view. But when you consider, like the U.S., when you consider APICAMP and OMICAMP and the synergies across an organization, it could become more interesting from a timing point of view. But I think to answer your question directly, certainly the opportunity is less, and it's really factored due to pricing.

We've been very clear that one of the reasons why we're so compelled is to go to market with Omicamptive in the United States is what we foresee to be both the concentrated customer segments around which we can build a good business here in the U.S., and also what that affords us in the way of synergies as we intend to go to market with Affy Campton. The same thing holds true in Europe, but in a different magnitude, and we have to be pragmatic about what we can do in the same timeframe. So our interest in partnering Omi Campton McCarville is not to exclusively license it away, but rather to seek a partner around which we could build an on-ramp for a business for Omi Campton, and that would provide us some sharing of responsibilities for Omi Campton McCarville. So that's the way we're approaching partnering.

Okay, and potential European approval of Omi Campton McCarville? expected in 2023, or do we have a timeline at this point?

Yeah, so we haven't spoken to that explicitly yet. It's going to obviously be a function of when we file an MAA and seek approval, and that has not yet happened. Here again, we're focusing on the U.S., but we're also pursuing those interactions with EMA and in Europe. and we'll give an update on that once we have something more concrete to speak to.

Okay. Let me squeeze in one more. Is it too early to talk about a potential timeline for a readout of Cohort 4, the Redwood Draw?

Maybe just a bit. It's something that we could maybe talk about with the next call. Let's see how the enrollment goes. As you know, it's, you know, an open-label cohort, 30 to 40 patients, and I do expect this will enroll well, so it might be something we can talk about on the next call. Okay.

Thanks for taking my question.

Thank you.

There are no further questions at this time. I'd like to turn the call back over to Speaker Robert Blunt for closing remarks. Please go ahead.

Thank you, Operator, and thanks to all the participants on our teleconference today. Thank you for your continued support and interest in cytokinetics. Obviously, this first quarter was a very, very busy and productive one, and at the same time, we covered a lot of ground on this call, so I'll just be brief in my concluding remarks. We look forward to sharing with you the open label extension data from Redwood OLE soon, and also continuing to update you on our progress, both with only Hampton McCarville and AFI Hampton. And as we move into the second half of the year, a first interim analysis with Courage ALS. So with those as key milestones for the remainder of the year, we thank you for your attention today. And with that, we can conclude the call, please.

This concludes today's conference call. Thank you for participating. You may now disconnect.