Fady Malik
Analyst · Raymond James. Please proceed
Thank you, Robert. In November of 2020, the results of GALACTIC-HF, our Phase III trial of omecamtiv mecarbil, were presented at the American Heart Association meeting and subsequently published in the New England Journal of Medicine. Since we've reviewed these results in some detail already, I'll start with a recap of additional analyses that the Executive Committee Chair, Dr. John Teerlink, presented at the Global Cardiovascular Clinical Trialist Fourm, or CVCT meeting, in December, and provide some perspective on the patient population and may benefit most from treatment with omecamtiv mecarbil based on these data. As you'll recall, the primary results from GALACTIC-HF demonstrated a statistically significant effect of treatment with omecamtiv mecarbil to reduce the risk of the primary composite end point of time to first heart failure event or cardiovascular death compared to placebo in patients treated with standard of care. While no reduction in the secondary endpoint of time that cardiovascular death was observed in the overall population, the statistically significant primary efficacy endpoint was achieved in the overall trial population, comprising over 8,000 patients, enrolled in 35 countries around the world. The effect of omecamtiv mecarbil was consistent across most prespecified subgroups with potentially greater treatment effect suggested in the over 4,000 patients with a left ventricular ejection fraction of less than or equal to the median of 28%. The supplemental analysis of the slower ejection fraction subgroup presented at CVCT showed that this potentially greater treatment effect in patients who received omecamtiv mecarbil was consistently observed in patients with characteristics that may indicate more advanced heart failure status such as being hospitalized within the last three months, having New York Heart Association Class III or IV heart failure, having higher NT-proBNP levels or having lower blood pressures. And when you look at the absolute risk reductions in these large prespecified subgroups, are quite meaningful, ranging from 5.2% to 8.1%. Additionally, an analysis of the relationship between ejection fraction when it examined as a continuous variable, and the hazard ratio for the primary composite endpoint in GALACTIC-HF suggested a potentially greater treatment effect of omecamtiv mecarbil in patients with increasingly lower ejection fractions. Given the primary effect of omecamtiv mecarbil to increase cardiac function, it stands to reason that patients with lower ejection fractions drive greater benefit. These results are important because they know -- we know that these sicker, more advanced heart failure patients continue to have substantially elevated risk despite receiving standard of care therapy and based on the progressive nature of the disease, they're frequently unable to tolerate guideline directed medical therapy as their disease worse. These are often the most challenging patients to treat, and they can be often hospitalized and rehospitalized. So picture is beginning to emerge that suggest that omecamtiv mecarbil may provide a new treatment option for this critical population of more severely ill heart failure patients. And biologically, it stands to reason these patients with more impaired systolic function may benefit more from this novel mechanism therapy overlaid to the standard of care. Unfortunately, these patients are not on COD and may represent more than half of the three million patients living with heart failure and reduced ejection fraction today. These patients often land in our hospitals, increasingly contributing to both a clinical and economic burden on our system. We have few treatment options available as their disease progresses despite current medical therapy. Since reporting the results of GALACTIC-HF, we've had the opportunity to engage with nearly 200 health care professionals, including leading heart failure opinion leaders, investigators and community cardiologists. The consensus feedback has been positive and supportive of our seeking regulatory approval based on the results of GALACTIC-HF, the safety profile of omecamtiv mecarbil and the unmet need among the more advanced heart failure population. The last quarter also saw significant actions by the FDA within the heart failure arena, and we're encouraged by the recent expansion of the label for Novartis's Entresto and heart failure with preserved ejection fraction as well as the recent FDA approval of vericiguat, or vercuva. We believe these developments reinforce the significant unmet needs in heart failure despite the availability of guideline directed medical therapies. And we believe these developments could augur well for omecamtiv mecarbil, given its novel muscle-directed action and the results from net GALACTIC-HF observed on top of standard of care. As we've indicated, Cytokinetics is committed to advancing omecamtiv mecarbil as a priority in 2021. And along those lines, we are now scheduled to have our first regulatory interaction with the FDA before the end of this quarter. We look forward to providing updates on this and future regulatory interactions as well as to confirm our anticipated timing for a potential NDA submission to FDA in the second half of 2021 as we conduct these regulatory interactions and complete our ongoing transition activities with Amgen. In parallel, we're continuing to conduct METEORIC-HF, which is not on the critical path to NDA submission, and we expect to complete enrollment in the first half of this year. Finally, within our cardiac myosin activator program, we will also regain development and commercialization rights for CK-136, previously referred to as AMG 594, our first-in-class cardiac troponin activator. And follow-up to Amgen's Phase I study, we'll be evaluating what further Phase I studies may be required in order to advance this drug candidate. But as Robert mentioned earlier, omecamtiv mecarbil remains our higher priority for 2021. And with that, I'll turn the call over to Stuart, who'll provide an update on our cardiac myosin inhibitor program.