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Cytokinetics Announces Opening of COSMIC-HF, a Phase II Clinical Trial of Oral Formulations of Omecamtiv Mecarbil in Patients with Heart Failure


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Copyright © Thomson Reuters 2013. All rights reserved.
2013-02-12 13:33:06 -

South San Francisco, CA, February 12, 2013 - Cytokinetics, Incorporated (Nasdaq:
CYTK)  announced today the opening to enrollment of a Phase II clinical trial of
oral  formulations  of  omecamtiv  mecarbil.   This  trial,  known  as COSMIC-HF
(Chronic  Oral Study  of Myosin  Activation to  Increase Contractility  in Heart
Failure),  is  sponsored  by  Amgen  in  collaboration  with Cytokinetics and is
designed  to evaluate the safety  and efficacy of a  novel cardiac muscle myosin
activator,  omecamtiv  mecarbil,   in  patients  with  heart  failure  and  left
ventricular systolic dysfunction.

"We  are pleased  that this  international Phase  II 
clinical trial designed to evaluate several oral formulations of omecamtiv mecarbil is now open to enrollment," stated Andrew A. Wolff, MD, FACC, Cytokinetics' Senior Vice President of Clinical Research and Development and Chief Medical Officer. "The objective of this trial is to identify and characterize an oral modified-release formulation of omecamtiv mecarbil that may progress into the Phase III clinical program.  The data from COSMIC-HF, in combination with the data from the ongoing ATOMIC-AHF clinical trial evaluating an intravenous formulation of omecamtiv mecarbil, will contribute to the design of a potential registration program for this drug candidate." Amgen holds an exclusive, worldwide license (excluding Japan) to omecamtiv mecarbil and related compounds, subject to specified development and commercialization participation rights of Cytokinetics. COSMIC-HF: Phase II Clinical Trial of Omecamtiv Mecarbil: OSMIC-HF is a double-blind, randomized, placebo-controlled, multicenter, dose escalation study designed to select and evaluate an oral modified-release formulation of omecamtiv mecarbil in patients with heart failure and left ventricular systolic dysfunction.  During the dose escalation phase, approximately 40 patients will be randomized 1:1:1:1 to placebo or one of three different oral formulations of omecamtiv mecarbil in each of two ascending dose pharmacokinetic (PK) cohorts to enable selection of one of these oral formulations for the planned expansion phase of the trial.  The dose of omecamtiv mecarbil will be 25 mg twice daily in the first PK cohort and 50 mg twice daily in the second PK cohort.  Following the dose escalation phase of the trial, there is a planned expansion phase of the trial in which approximately 300 patients will be randomized 1:1:1 to receive one oral formulation of omecamtiv mecarbil selected from the three studied in the prior ascending dose PK cohorts at one of two dose levels or placebo.  The two dose levels of omecamtiv mecarbil to be studied in the expansion cohort will be based on the data from the ascending dose PK cohorts.  The primary objectives of this study are to select an oral modified-release formulation and dose of omecamtiv mecarbil for chronic twice daily dosing in patients with heart failure and left ventricular systolic dysfunction and to characterize its safety, tolerability, and pharmacokinetics after 12 weeks of treatment.  The secondary objectives are to assess the changes from baseline in systolic ejection time, stroke volume, left ventricular end-systolic diameter, left ventricular end-diastolic diameter, heart rate and N-terminal pro-brain natriuretic peptide (a biomarker associated with the severity of heart failure) after 12 weeks of treatment. ATOMIC-AHF: Phase IIb Clinical Trial of Intravenous Omecamtiv Mecarbil ATOMIC-AHF is an ongoing Phase IIb clinical trial designed to evaluate an intravenous formulation of omecamtiv mecarbil in approximately 600 patients enrolled in 3 sequential, ascending-dose cohorts. In each cohort, patients will be randomized 1:1 to omecamtiv mecarbil or placebo. The primary objective of this trial is to evaluate the effect of 48 hours of intravenous omecamtiv mecarbil compared to placebo on dyspnea (shortness of breath) in patients with left ventricular systolic dysfunction hospitalized for acute heart failure. The secondary objectives are to assess the safety and tolerability of 3 dose levels of intravenous omecamtiv mecarbil compared with placebo and to evaluate the effects of 48 hours of treatment with intravenous omecamtiv mecarbil on additional measures of dyspnea, patients' global assessments, change in N- terminal pro brain-type natriuretic peptide and short-term clinical outcomes in these patients. In addition, the trial is evaluating the relationship between omecamtiv mecarbil plasma concentrations and these parameters in patients with acute heart failure. Development Status of Omecamtiv Mecarbil In 2012, Cytokinetics and Amgen reviewed data from a prior Phase I randomized, open-label, 4-period cross-over clinical trial designed to assess the safety, tolerability and pharmacokinetics of multiple oral formulations of omecamtiv mecarbil in healthy volunteers.  The formulations to be evaluated in COSMIC-HF were selected from among those oral formulations. Prior to the conduct of the ATOMIC-AHF Phase IIb and COSMIC-HF Phase II clinical trials, omecamtiv mecarbil was the subject of a clinical trials program conducted by Cytokinetics comprised of five Phase I trials in healthy volunteers and two Phase IIa trials in patients with heart failure. Those trials were designed to evaluate the safety, tolerability, pharmacodynamic and pharmacokinetic profiles of both intravenous and oral formulations of omecamtiv mecarbil for the potential treatment of heart failure.  Data from each of these trials were reported previously. About Cytokinetics Cytokinetics is a clinical-stage biopharmaceutical company focused on the discovery and development of novel small molecule therapeutics that modulate muscle function for the potential treatment of serious diseases and medical conditions. Cytokinetics' lead drug candidate from its cardiac muscle contractility program, omecamtiv mecarbil, is in Phase II clinical development for the potential treatment of heart failure. Amgen Inc. holds an exclusive license worldwide (excluding Japan) to develop and commercialize omecamtiv mecarbil and related compounds, subject to Cytokinetics' specified development and commercialization participation rights. Cytokinetics is independently developing tirasemtiv, a skeletal muscle activator, as a potential treatment for diseases and conditions associated with aging, muscle wasting or neuromuscular dysfunction. Tirasemtiv is currently the subject of a Phase II clinical trials program and has been granted orphan drug designation and fast track status by the U.S. Food and Drug Administration and orphan medicinal product designation by the European Medicines Agency for the potential treatment of amyotrophic lateral sclerosis, a debilitating disease of neuromuscular impairment in which treatment with tirasemtiv produced potentially clinically relevant pharmacodynamic effects in Phase II trials.  All of these drug candidates have arisen from Cytokinetics' muscle biology focused research activities and are directed towards the cytoskeleton. The cytoskeleton is a complex biological infrastructure that plays a fundamental role within every human cell. Additional information about Cytokinetics can be obtained at www.cytokinetics.com. This press release contains forward-looking statements for purposes of the Private Securities Litigation Reform Act of 1995 (the "Act"). Cytokinetics disclaims any intent or obligation to update these forward-looking statements, and claims the protection of the Act's Safe Harbor for forward-looking statements. Examples of such statements include, but are not limited to, statements relating to Cytokinetics' and Amgen's research and development activities, including the progress, conduct, design and results of clinical trials, the significance and utility of clinical trial results, and the properties and potential benefits of omecamtiv mecarbil and Cytokinetics' other drug candidates and potential drug candidates. Such statements are based on management's current expectations, but actual results may differ materially due to various risks and uncertainties, including, but not limited to, potential difficulties or delays in the development, testing, regulatory approvals for trial commencement, progression or product sale or manufacturing, or production of Cytokinetics' drug candidates that could slow or prevent clinical development or product approval, including risks that current and past results of clinical trials or preclinical studies may not be indicative of future clinical trials results, patient enrollment for or conduct of clinical trials may be difficult or delayed, Cytokinetics' drug candidates may have adverse side effects or inadequate therapeutic efficacy, the U.S. Food and Drug Administration or foreign regulatory agencies may delay or limit Cytokinetics' or its partners' ability to conduct clinical trials, and Cytokinetics may be unable to obtain or maintain patent or trade secret protection for its intellectual property; Amgen's decisions with respect to the design, initiation, conduct, timing and continuation of development activities for omecamtiv mecarbil; Cytokinetics may incur unanticipated research and development and other costs or be unable to obtain additional financing necessary to conduct development of its products on acceptable terms, if at all; Cytokinetics may be unable to enter into future collaboration agreements for its drug candidates and programs on acceptable terms, if at all; standards of care may change, rendering Cytokinetics' drug candidates obsolete; competitive products or alternative therapies may be developed by others for the treatment of indications Cytokinetics' drug candidates and potential drug candidates may target; and risks and uncertainties relating to the timing and receipt of payments from its partners, including milestones and royalties on future potential product sales under Cytokinetics' collaboration agreements with such partners. For further information regarding these and other risks related to Cytokinetics' business, investors should consult Cytokinetics' filings with the Securities and Exchange Commission. Contact: Joanna (Jodi) L. Goldstein Manager, Corporate Communications & Marketing (650) 624-3000 This announcement is distributed by Thomson Reuters on behalf of Thomson Reuters clients. The owner of this announcement warrants that: (i) the releases contained herein are protected by copyright and other applicable laws; and (ii) they are solely responsible for the content, accuracy and originality of the information contained therein. Source: Cytokinetics, Inc. via Thomson Reuters ONE [HUG#1677291]


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