Fady Malik
Analyst · H.C. Wainwright
Thanks Robert. Before I get into new specific updates, I'd like to take a moment to reflect on the productivity and promise of our pipeline. We pioneered the pharmacology of muscle function and continue to build our leadership with an expanding and advancing clinical pipeline of novel modulators of sarcomere contractility both activators and inhibitors. This work encompasses our screening many millions of compounds profiling thousands of head compounds optimizing and characterizing hundreds of distinct chemical series and conducting dozens of clinical trials. We've learned a lot along the way, about how to best - to modulate the sarcomere for potential therapeutic benefit and have developed a profound respect for the importance of prioritizing pharmacokinetics and pharmacodynamics of our drug candidates in this area. As Robert mentioned, we recently completed enrollment and GALACTIC-HF, the Phase 3 cardiovascular outcomes clinical trial of omecamtiv mecarbil being conducted by Amgen under our collaboration. GALACTIC-HF follows 18 prior clinical trials, which set the stage for this important outcomes trial and inform the dosing patient inclusion and exclusion criteria and endpoints that we and Amgen selected for the study With more than 8,200 patients enrolled at over a 1,000 sites across 35 countries, GALACTIC-HF is now among the largest Heart Failure Clinical trials ever conducted. We are pleased with the outstanding contributions of our site investigators and study coordinators, and encouraged that we achieved the intended balance of inpatients and outpatients with excellent global representation. Specifically, we enrolled approximately 40% of the patients in the U.S., Canada, Western Europe, South Africa and Australasia, 33% in Eastern Europe and Russia, 19% in Latin America, and 8% in Asia. Approximately, 25% of the patients in GALACTIC-HF were hospitalized at randomization which is consistent with the protocol specification. As you may recall, in March 2019, the data monitoring committee conducted the first interim analysis of GALACTIC-HF which included consideration of pre-specified criteria of futility. Upon review of the data, the DMC recommended the trial continue without changes to its conduct. A futility analysis was triggered once a pre-specified number of cardiovascular death stipulated by the trials protocol had occurred. With enrollment now complete, the next milestone will be the second planned interim analysis which includes an assessment for the potential for superiority projected to occur in the first half of 2020. Also during the quarter, we continued site activation and enrollment in METEORIC-HF, our second Phase 3 trials omecamtiv mecarbil, which is designed to evaluate the effect of treatment with omecamtiv mecarbil compared to placebo on exercise capacity as determined by cardiopulmonary exercise testing following 20 weeks of treatment. This trial is being conducted by Cytokinetics under our collaboration with Amgen, and while it is still early days enrollment is on track and sites are executing the protocol well. The quality of initial exercise test conducted by the sites and reviewed by the Core Lab has been high, which is encouraging and we look forward to meeting our goal to activate the majority of participating sites this year distributed across the U.S., Canada and Europe. As previously stated, we are seeking to have results available around the same time the GALACTIC-HF is anticipated to read-out in 2021. Now turning to AMG 594 our novel selective oral small molecule cardiac troponin activator that was discovered under our joint research program with Amgen. AMG 594 was designed to show differential pharmacology on omecamtiv mecarbil and its advancement further underscores our leadership in muscle biology. In the second quarter, Amgen continued to conduct the Phase 1 clinical study of AMG 594. This study includes single and multiple ascending dose cohorts to assess the safety and tolerability of AMG 594 in healthy volunteers and its potential to increased cardiac function. We expect this study will continue throughout 2019 and have been working closely with Amgen to develop a potential Phase 2 clinical program and plan. Now moving to our cardiac myosin inhibitor program, in the second quarter, we continued the conduct of the Phase 1 first in human study of our cardiac myosin inhibitor CK 274. This study in healthy participants will soon be coming to a close and we're pleased that an abstract describing the results has been accepted as a poster presentation at the HFSA 23, Annual Meeting to be held September 13 through 16. As you know, we are developing this investigational medicine for the potential treatment of hypertrophic cardiomyopathy and expect to advance this and other compounds in a broad development program. We expect that the Phase 1 data will lend support to what we have seen emerging in our preclinical work that is a profile that may distinguish it as a next-in-class drug candidate. We believe its pharmacokinetics may optimize the time to reach target dose levels and provide both rapid symptom relief and reverse ability. In connection with that profile for this next-in-class drug candidate, last week we presented preclinical data at the American Heart Association's basic cardiovascular Scientific Sessions, which shows the CK 274 decreased cardiac contractility in vitro and in vivo, suggesting that this cardiac myosin inhibitor may address the underlying hypercontractility of the cardiac sarcomere in HCM patients. This was the first presentation of data relating to the CK 274 in a medical meeting. In vitro study showed that CK 274 selectively inhibited cardiac myosin activity in a concentration-dependent manner and reduced fractional shortening, a measure of cardiac contractility without any effect on the cardiac calcium transient. Similarly in vitro studies in healthy animals demonstrated that CK 274 decreased cardiac contractility in the dose-related fashion. In a mouse model of hypertrophic cardiomyopathy, single doses of CK-274 reduced fractional shortening in a dose-related fashion and its effects appeared reversible within 24 hours after administration of a single dose of CK-274. We believe these data support the distinctive therapeutic hypotheses relating to both onset of action and reverse ability of effect. As we wrap up the Phase 1 study, we are also preparing for the international Phase 2 trial to begin in the fourth quarter of the year. Toward that end, we have identified leading clinical sites to participate and we've been -- we've assembled an enthusiastic steering committee, which includes the foremost experts in HCM. We are pleased with the feedback we continue to receive from leaders in the field about our approach and the strong interest they have to participate in the clinical trials program of this potential new therapy. And now I'll turn the call over to Andy to provide an update on reldesemtiv.