No history of congenital prolonged corrected QT (QTc) syndrome, New York Heart Association (NYHA) class III or IV congestive heart failure (CHF) New York Heart Association (NYHA) class II, NYHA class III, or IV congestive heart failure (any symptomatic heart failure) Congestive heart failure (CHF) New York (NY) Heart Association class III or IV New York Heart Association (NYHA) class III or IV congestive heart failure, ventricular arrhythmias or uncontrolled blood pressure New York Heart Association Class II-IV congestive heart failure Patients with chronic kidney disease (glomerular filtration rate [GFR] < ), uncontrolled hypertension, congestive heart failure, pre-existing bone marrow dysfunction, or cytopenias\r\n* Congestive heart failure (CHF): New York Heart Association (NYHA) class II-IV at the time of screening Patients with any class of New York Heart Association (NYHA) congestive heart failure (CHF) or heart failure with preserved ejection fraction (HFPEF) Symptomatic congestive heart failure (CHF), New York Heart Association (NYHA) Class III or IV heart failure or other clinical signs of severe cardiac dysfunction Current congestive heart failure (New York Heart Association Class II, III or IV) New York Heart Association heart failure class >= Participants with a history of congestive heart failure (New York Heart Association [NYHA] class II, III or IV) are excluded Symptomatic congestive heart failure of New York heart Association Class III or IV New York Heart Association (NYHA) class III or IV congestive heart failure. New York Heart Association class III or IV heart failure New York Heart Association Class II, III, or IV congestive heart failure New York Heart Association Class III or IV heart failure Participants with a history of congestive heart failure or New York Heart Association (NYHA) class III or IV functional status are excluded Congestive heart failure of New York Heart Association class III/IV, New York Heart Association (NYHA) Class III or IV heart failure New York Heart Association class III or IV heart failure Heart failure, class IV by New York Heart Association criteria Subjects with New York Heart Association (NYHA) class III or IV heart failure. New York Heart Association class III or IV heart failure Symptomatic congestive heart failure (New York Heart Association class >= ) within the months prior to study drug administration New York Heart Association Class III to IV heart failure. Absence of New York Heart Association (NYHA) class II, III, or IV congestive heart failure Other clinically significant heart disease (New York Heart Association [NYHA] class heart failure, uncontrolled hypertension) Congestive heart failure (CHF): New York Heart Association (NYHA) Class III (moderate) or Class IV (severe) at the time of screening New York Heart Association Class III or IV heart failure. Uncontrolled cardiac angina or symptomatic congestive heart failure (New York Heart Association [NYHA] class III or IV) History of congestive heart failure New York Heart Association (NYHA) class III or IV or uncontrolled hypertension at screening. New York Heart Association (NYHA) class IV heart failure Current evidence of active and uncontrolled infection, New York Heart Association (NYHA) class III-IV congestive heart failure (CHF), documented Childs class B-C cirrhosis, active pancreatitis or uncontrolled medical disease which in the opinion of the investigator could compromise assessment of efficacy Congestive heart failure > New York Heart Association (NYHA) class Congestive heart failure > New York Heart Association (NYHA) class congestive heart failure (New York Heart Association class III to IV) Subject has severe cardiovascular disease, i.e. arrhythmias, requiring chronic treatment, congestive heart failure (New York Heart Association [NYHA] class III or IV) or symptomatic ischemic heart disease Active congestive heart failure (New York Heart Association [NYHA] class III to IV), symptomatic ischemia, or conduction abnormalities uncontrolled by conventional intervention Congestive heart failure (New York Heart Association class III or IV) New York Heart Association class III/IV heart failure New York Heart Association class - heart failure Class III or IV congestive heart failure, as defined by the New York Heart Association (NYHA) New York Heart Association class III or greater congestive heart failure Patients with New York Heart Association (NYHA) class III or IV heart failure will be excluded Congestive heart failure New York Heart Association (NYHA) class or Congestive heart failure (New York Heart Association [NYHA] II, III, IV) Congestive heart failure (CHF) NYHA (New York Heart Association) > Class History of congestive heart failure of Class II-IV New York Heart Association (NYHA) criteria, or serious cardiac arrhythmia requiring treatment (except atrial fibrillation, paroxysmal supraventricular tachycardia). Patients with congestive heart failure, Class III or IV, by New York Heart Association (NYHA) criteria. Congestive heart failure (CHF) that meets New York Heart Association (NYHA) class II to IV definitions Patients with NYHA (New York Heart Association) class III or IV heart failure or history of a prior myocardial infarction (MI) within the last five years prior to enrollment in the study New York Heart Association (NYHA) stage III/IV congestive heart failure, arrhythmias not adequately controlled. History of symptomatic congestive heart failure (New York Heart Association [NYHA] Class III or IV). New York Heart Association (NYHA) class or congestive heart failure (CHF) symptoms Congestive heart failure of any severity (New York Heart Association [NYHA] class I-IV) Heart failure that meets New York Heart Association (NYHA) class III and IV definitions Symptomatic congestive heart failure of New York Heart Association Class III or IV. Grade III/IV congestive heart failure, as defined by New York Heart Association (NYHA) criteria, or myocardial infarction within months Current congestive heart failure (New York Heart Association class II-IV). For Cohort B:Has symptomatic congestive heart failure (New York Heart Association Class III or IV heart disease) History of class III or IV congestive heart failure, as defined by the New York Heart Association Classification of Congestive Heart Failure Congestive heart failure (New York Heart Association class III to IV) Class III or IV congestive heart failure per New York Heart Association New York Heart Association (NYHA) Class III or IV congestive heart failure; documented New York Heart Association (NYHA) Class III or IV congestive heart failure; New York Heart Association (NYHA) class III or IV congestive heart failure New York Heart Association (NYHA) class IV congestive heart failure New York Heart Association (NYHA) class III or IV congestive heart failure known autoimmune disease, known bleeding diathesis, history of congestive heart failure New York Heart Association (NYHA) class III or IV; have congestive heart failure or poorly controlled cardiac arrhythmia per New York Heart Association Class II-IV heart disease New York Heart Association Class III or IV heart failure; Have symptomatic congestive heart failure (New York Heart Association II-IV) or symptomatic or poorly controlled cardiac arrhythmia. Patients with class III or class IV heart failure by New York Heart Association, those with unstable angina, and those with uncontrolled arrhythmia are not eligible Subject has congestive heart failure classified as New York Heart Association Class IV. The participant has symptomatic congestive heart failure (New York Heart Association II-IV) or symptomatic or poorly controlled cardiac arrhythmia. Congestive heart failure (CHF): New York Heart Association (NYHA) class III (moderate) or class IV (severe) at the time of screening Congestive heart failure > New York Heart Association (NYHA) class History of Class III or IV congestive heart failure, as defined by the New York Heart Association Classification of Congestive Heart Failure No symptomatic congestive heart failure (New York Heart Association class II, III, or IV) within months prior to registration Symptomatic congestive heart failure (New York Heart Association [NYHA] class III or IV), or unstable angina pectoris Current New York Heart Association (NYHA) class II, III, or IV congestive heart failure or symptomatic heart failure within days prior to the start of study drugs Symptomatic congestive heart failure (New York Heart Association [NYHA] class III or IV), or unstable angina pectoris Patients with myocardial impairment of any cause (e.g. cardiomyopathy, ischemic heart disease, significant valvular dysfunction, hypertensive heart disease, and congestive heart failure) resulting in heart failure by New York Heart Association Criteria (Class III or IV staging) Active congestive heart failure (New York Heart Association [NYHA] class II-IV) Class III or IV congestive heart failure, as defined by the New York Heart Association (NYHA) Symptomatic congestive heart failure (New York Heart Association [NYHA] class III or IV), unstable angina pectoris or congenital long QT syndrome New York Heart Association (NYHA) class II, NYHA class III, or IV congestive heart failure (any symptomatic heart failure) Class III or IV congestive heart failure, as defined by the New York Heart Association (NYHA) History of uncontrolled congestive heart failure defined as New York Heart Association (NYHA) class III or greater New York Heart Association Class III or IV heart failure Class II, III or IV congestive heart failure, as defined by the New York Heart Association (NYHA) Active congestive heart failure (New York Heart Association [NYHA] class III to IV), symptomatic ischemia, or conduction abnormalities uncontrolled by conventional intervention Patients with congestive heart failure, class III or IV, by the New York Heart Association (NYHA) criteria Uncontrolled intercurrent illness including, but not limited to, the following:\r\n* Active infection\r\n* Congestive heart-failure (New York Heart Association [NYHA] grade III or IV) Uncontrolled malignant arrhythmias or clinical evidence of congestive heart failure (New York class IV) Subject currently has Class or New York Heart Association congestive heart failure. Clinical evidence of significant congestive heart failure (CHF) (New York Heart Association [NYHA] Class III or IV) Subject currently has Class III or IV New York Heart Association congestive heart failure. Patients with New York Heart Association (NYHA) heart failure class > - Subject currently has Class or New York Heart Association congestive heart failure. Symptomatic congestive heart failure (New York Heart Association [NYHA] class III or IV) Class II-IV congestive heart failure, as defined by the New York Heart Association Any uncontrolled congestive heart failure New York Heart Association class III or IV Uncontrolled hypertension or congestive heart failure Class III/IV per the New York Heart Association's Heart Failure Guidelines Patients with New York Heart Association (NYHA) class or congestive heart failure Class II-IV New York Heart Association (NYHA) congestive heart failure Class III or IV congestive heart failure by New York Heart Association Have congestive heart failure (CHF) New York Heart Association class ? or symptomatic or poorly controlled cardiac arrhythmia. Subject has current symptomatic heart failure or a history of congestive heart failure New York Heart Association (NYHA) class or Unstable angina, significant cardiac arrhythmia, or New York Heart Association (NYHA) class III or IV congestive heart failure Current congestive heart failure (New York Heart Association Class II-IV). Patients with history of and/or current evidence of myocardial impairment (e.g. cardiomyopathy, ischemic heart disease, significant valvular dysfunction, hypertensive heart disease, and congestive heart failure) resulting in heart failure by New York Heart Association Criteria (Class III or IV staging) Congestive heart failure or prior history of New York Heart Association (NYHA) class III/ IV cardiac disease; Congestive heart failure New York Heart Association Class III or IV, or Class II with a recent decompensation requiring hospitalization within weeks before screening. History of class III or IV congestive heart failure, as defined by the New York Heart Association Symptomatic congestive heart failure of New York Heart Association Class III or IV Congestive heart failure of New York Heart Association (NYHA) class III or higher severity at study entry New York Heart Association class III or IV heart failure Patients with a history of congestive heart failure of any New York Heart Association class Patients with New York Heart Association (NYHA) class II-IV heart failure The participant has current clinically-relevant coronary artery disease (New York Heart Association III or IV) or uncontrolled congestive heart failure. Patients with history of and/or current evidence of myocardial impairment (e.g. cardiomyopathy,ischemic heart disease, significant valvular dysfunction, hypertensive heart disease, and congestive heart failure) resulting in heart failure by New York Heart Association Criteria (Class III or IV staging) Subject currently has Class or New York Heart Association congestive heart failure. History of symptomatic congestive heart failure of any New York Heart Association class or serious cardiac arrhythmia requiring treatment History of congestive heart failure (CHF) New York Heart Association (NYHA) class or ; Uncontrolled heart failure as defined by New York Heart Association (NYHA) class or Clinically significant cardiac disease defined by congestive heart failure New York Heart Association (NYHA) Class or Class . Current or history of New York Heart Association Class III or IV heart failure. New York Heart Association class III or IV heart failure History of New York Heart Association Class or heart failure; Uncontrolled cardiac angina or symptomatic congestive heart failure (New York Heart Association [NYHA] class III or IV) Congestive Heart Failure NY Heart Association class III or IV New York Heart Association (NYHA) class IV congestive heart failure; Symptomatic congestive heart failure of New York heart Association Class III or IV New York Heart Association (NYHA) class III and IV congestive heart failure Congestive heart failure (New York Heart Association [NYHA] class III or IV) New York Heart Association (NYHA) class III and IV congestive heart failure Patients with uncontrolled congestive heart failure (New York Heart Association [NYHA] Class IV) Current or history of New York Heart Association Class III or IV heart failure Congestive heart failure (New York Heart Class III or IV).