New York Heart Association Class II-IV congestive heart failure Any of the following cardiac abnormalities:\r\n* Unstable angina pectoris\r\n* Congestive heart failure >= New York Heart Association class 3\r\n* Corrected QT interval (QTc) >= 470 milliseconds calculated using Fridericia‘s correction\r\n* Current or history of pericardial effusion causing hemodynamic compromise Diagnosis of symptomatic congestive heart failure (New York Heart Association [NYHA] II-IV) or symptomatic or poorly controlled cardiac arrhythmia Known cardiac disorder, including:\r\n* Known inherited coronary disease\r\n* Symptomatic heart failure (New York Heart Association [NYHA] class II-IV prior or current cardiomyopathy, or severe valvular heart disease)\r\n* Current cardiomyopathy\r\n* Severe valvular heart disease\r\n* Atrial fibrillation\r\n* Ejection fraction (ECHO) < 53%\r\n* QTcF > 450 msec Current or history of congestive heart failure New York Heart Association (NHYA) class 3 or 4, or any history of documented diastolic or systolic dysfunction (LVEF < 50%, as measured by MUGA scan or echocardiogram) Subjects with a history of heart disease, such as congestive heart failure (class II, III, or IV defined by the New York Heart Association functional classification), history of unstable or poorly controlled angina, or history (< 1 year prior to enrollment) of ventricular arrhythmia Has a medical history of symptomatic congestive heart failure (New York Heart Association classes II-IV) or a serious cardiac arrhythmia requiring treatment Has a corrected QT by Fridericia's formula (QTcF), of >470 ms based on a triplicate 12-lead ECG Symptomatic congestive heart failure (New York Heart Association class >= 2) within the 6 months prior to study drug administration Has symptomatic congestive heart failure (New York Heart Association [NYHA] Classes II-IV), unstable angina, or cardiac arrhythmia requiring antiarrhythmic treatment. New York Heart Association functional class III-IV heart failure, symptomatic pericardial effusion, stable or unstable angina, symptoms of coronary artery disease, congestive heart failure, clinically significant hypotension, or history of an ejection fraction of =< 30 % (echocardiogram or multi gated acquisition scan [MUGA]) New York Heart Association > Class II congestive heart failure that is not controlled on standard therapy within 6 months prior to initiation of treatment with Toca 511. New York Heart Association class III or greater congestive heart failure within last 6 months or uncontrolled hyperlipidemia (cholesterol > 300 mg/dl; triglyceride 2.5 X upper limit of normal [ULN] despite lipid lowering agent) within last 3 months Have clinical symptomatic congestive heart failure defined at >= Class II of the New York Heart Association functional classification system or LVEF < 50% at baseline. Symptomatic congestive heart failure, unstable angina pectoris, symptomatic or poorly controlled cardiac arrhythmia; symptomatic heart failure (New York Heart Association [NYHA] class II-IV) 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). Has a medical history of symptomatic congestive heart failure (New York Heart Association classes II-IV) or serious cardiac arrhythmia requiring treatment New York Heart Association class II/III/IV congestive heart failure with a history of dyspnea, orthopnea, or edema that requires current treatment with angiotensin convering enzyme inhibitors, angiotensin II receptor blockers, beta-blockers, or diuretics Significant cardiovascular abnormalities as defined by any one of the following: \r\n* Congestive heart failure New York Heart Association (NYHA) classes II-IV; patients with asymptomatic class I congestive heart failure (CHF) may participate in conjunction with a cardiology consultation\r\n* Clinically significant hypotension\r\n* Symptoms of coronary artery disease\r\n* Presence of arrhythmias in electrocardiography (EKG) requiring drug therapy Current congestive heart failure (New York Heart Association class II-IV). For Cohort A: Has symptomatic congestive heart failure (New York Heart Association Class III or IV heart disease), unstable angina pectoris, cardiac arrhythmia, or uncontrolled hypertension have congestive heart failure or poorly controlled cardiac arrhythmia per New York Heart Association Class II-IV heart disease Have symptomatic congestive heart failure (New York Heart Association II-IV) or symptomatic or poorly controlled cardiac arrhythmia. Any clinically significant pericardial effusion, congestive heart failure (CHF) (New York [NY] Heart Association grade II-IV) or cardiovascular condition that would preclude assessment of mesothelin induced pericarditis or that may worsen as a result of toxicities expected for this study; this determination will be made by a cardiologist if cardiac issues are suspected History or evidence of current ?Class II congestive heart failure as defined by New York Heart Association. Subjects with clinically significant heart disease, such as congestive heart failure (class II, III, or IV defined by the New York Heart Association functional classification), history of unstable or poorly controlled angina, or history (< 1 year) of ventricular arrhythmia The participant has symptomatic congestive heart failure (New York Heart Association II-IV) or symptomatic or poorly controlled cardiac arrhythmia. New York Heart Association functional class III-IV heart failure, symptomatic pericardial effusion, stable or unstable angina, symptoms of coronary artery disease (CAD), congestive heart failure, clinically significant hypotension or history of an ejection fraction of =< 30% (echocardiogram or multi-gated acquisition scan [MUGA]) Severe cardiovascular disease including symptomatic angina pectoris, symptomatic cardiac arrhythmia, or symptomatic congestive heart failure (New York Heart Association class II-IV); subjects carrying a diagnosis of congestive heart failure which is asymptomatic are eligible so long as a baseline and follow-up echocardiogram are performed as per the study calendar Significant cardiovascular disease including congestive heart failure (New York Heart Association class II or higher) or active 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) Patients must not have a history of cardiac disease, defined as New York Heart Association class II or greater or clinical evidence of congestive heart failure Patients must not have a history of cardiac disease, defined as New York Heart Association class II or greater or clinical evidence of congestive heart failure; all patients must have a MUGA scan or 2-dimensional (D) echocardiogram indicating an ejection fraction of >= 45% within 42 days prior to registration; the method used at baseline must be used for later monitoring Other clinically significant heart disease (e.g. congestive heart failure [CHF] New York [NY] Heart Association class III or IV, uncontrolled hypertension, history of labile hypertension, or history of poor compliance with an antihypertensive regimen) New York Heart Association Class III or IV cardiac disease, including preexisting clinically significant ventricular arrhythmia, congestive heart failure, or cardiomyopathy History of documented congestive heart failure (CHF), New York Heart Association class II/III/IV, with a history of dyspnea, orthopnea or edema that requires current treatment with angiotensin converting enzyme inhibitors, angiotensin II receptor blockers, beta-blockers or diuretics; NOTE: use of these medications for the treatment of hypertension is allowed Class II-IV congestive heart failure, as defined by the New York Heart Association New York Heart Association functional class III-IV heart failure, symptomatic pericardial effusion, stable or unstable angina, symptoms of coronary artery disease, congestive heart failure, clinically significant hypotension, or an ejection fraction of =< 40 % (echocardiogram or MUGA) Has a medical history of symptomatic Congestive Heart Failure (CHF) (NYHA classes II-IV) or serious cardiac arrhythmia. Other clinically significant heart disease (e.g., congestive heart failure (CHF) New York (NY) Heart Association class II or IV, uncontrolled hypertension, history of labile hypertension, or history of poor compliance with an antihypertensive regimen) Have congestive heart failure (CHF) New York Heart Association class ?3 or symptomatic or poorly controlled cardiac arrhythmia. 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) History of cardiac heart failure of New York Heart Association Class II or greater or serious cardiac arrhythmia requiring treatment (except for atrial fibrillation and paroxysmal supraventricular tachycardia) History of symptomatic congestive heart failure (CHF) (New York Heart Association [NYHA] classes II?IV) Class II or greater congestive heart failure as described in the New York Heart Association Functional Classification criteria Cardiac function:\r\n* Known inherited coronary disease\r\n* Symptomatic heart failure (New York Heart Association [NYHA] class II-IV prior or current cardiomyopathy, or severe valvular heart disease)\r\n* Prior or current cardiomyopathy\r\n* Severe valvular heart disease\r\n* History of atrial fibrillation History of documented congestive heart failure (CHF), New York Heart Association class II/III/IV, with a history of dyspnea, orthopnea or edema that requires current treatment with angiotensin converting enzyme inhibitors, angiotensin II receptor blockers, beta-blockers or diuretics; NOTE: use of these medications for the treatment of hypertension is allowed New York Heart Association ? Class II congestive heart failure; Clinically significant abnormality on ECG 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) Class II to IV heart failure as defined by the New York Heart Association functional classification system; patients with known coronary artery disease, congestive heart failure not meeting the above criteria, or left ventricular ejection fraction (LVEF) < 50% must be on a stable medical regimen that is optimized in the opinion of the treating physician, in consultation with a cardiologist if appropriate, to be eligible History of symptomatic congestive heart failure of any New York Heart Association class or serious cardiac arrhythmia requiring treatment Symptomatic congestive heart failure (New York Heart Association II-IV), unstable angina pectoris, or symptomatic or poorly controlled cardiac arrhythmia. Has symptomatic congestive heart failure[New York Heart Association (NYHA) Classes III-IV], unstable angina, or cardiac arrhythmia requiring antiarrhythmic treatment Normal left ventricular ejection fraction at baseline and no evidence of New York Heart Association class II to IV heart failure