- No clinically significant disease/dysfunction of the cardiovascular (NYHA Classification Class II-IV), neurologic (cerebral), pulmonary, endocrine, gastrointestinal, or genitourinary systems, which in the opinion of the investigator would put the subject at increased risk for a thrombovascular event, compromise the subject's ability to respond to r-HuEPO therapy, or otherwise impair their ability to participate in this study