Efficacy and Safety of Human Neuregulin-1 to Treat Stable Chronic Heart Failure (ZS-01-210)

Inclusion Criteria:

• Age > 18 years.
• Male or female subjects.
• Have chronic heart failure defined as NYHA classification of II or III.
• Be on a stable regimen of ACEI/ARB and/or beta-blocker 3 months prior to receiving study medication and are expected to remain on a stable HF medication regime throughout the duration of the trial.
• Left ventricular ejection fraction (LVEF) of < 35% as determined at screening by 2-D echocardiography.
• Is able to understand and provide informed consent.
• If subject has dilated cardiomyopathy, ischemic heart disease or corrected valvular heart disease, and had surgery to repair or replace value, the surgery must have been performed 3 months prior to receiving study medication and the surgical area is functioning normally.
• Proper birth control must be used at least 3 weeks prior to the study (women only), during the infusion period of study drug (men and women), 4-weeks after study drug administration (men and women) and the remaining 11 months in the study follow-up (women). Women must have a negative pregnancy test at screening.
• No greater than mild pericardial effusion < 0.5 cm on echocardiography (roughly corresponds to < 100 mL).
• Have an implantable cardioverter-defibrillator (ICD). The ICD should have been implanted at least 3 months prior to receiving study medication. Patients should undergo interrogation of their ICDs between 1 and 7 days before randomization to drug for the previous thirty (30) days. This interrogation would include surveillance for ventricular arrhythmias as well as assessment of ICD discharge(s) and/or anti-tachycardia pacing.

Exclusion Criteria:

• Has chronic heart failure classified as NYHA Class I or IV.
• Has a history of any malignancy or positive test as specified in the pre-cancer screening.
• Have other conditions which in the opinion of the investigator preclude participation in the study, e.g. serious co-morbidity, known or suspected substance abuse or non-compliance.
• Has a body weight >350lbs.
• Has had any cause hospitalization 30 days prior to screening.