This study will assess the efficacy and safety of intravenous R744 in renal anemia patients on hemodialysis.

Inclusion Criteria:

• Patients who have been receiving hemodialysis more than 1 time a week
• Patients aged ≥ 20 years at the time of obtaining consent
• After starting of hemodialysis, patients who have not received rHuEPO preparation
• After starting of hemodialysis, patients whose value of Hb concentrations determined before the first hemodialysis during the last week prior to the registration has been < 10.0 g/dL

Exclusion Criteria:

• Patients with hardly controllable hypertension (patients whose diastolic blood pressure has been ≥ 100 mmHg on more than 1/3 of the determining occasions after starting of hemodialysis during the last week before registration)
• Patients with congestive cardiac failure (≥ Class III in NYHA cardiac function classification)
• Female patients who are pregnant, lactating, possibly pregnant or not willing to take a contraceptive measure during the period from the day of starting the treatment with the study drug to 90 days after the day of the last dose of the study drug
• Patients with complication of myocardial infarction, pulmonary infarction or cerebral infarction (excluding asymptomatic cerebral infarction)
• Patients confirmed to have serious allergy or serious drug allergy (shock, anaphylactoid symptom)
• Patients hypersensitive to a rHuEPO preparation
• Patients with malignant tumor (including hemic malignant tumor), severe infection, systemic hemic disease (osteomyelodysplasia syndrome, hemoglobinopathy, etc.), hemolytic anemia or apparent hemorrhagic lesion such as digestive tract hemorrhage
• Patients who have received an anabolic hormone preparation, testosterone enanthate or mepitiostane within 12 weeks before registration
• Patients who have received another investigational drug within 12 weeks before registration
• Patients who have received R744 before registration
• Patients whose AST(GOT) value ≥ 100 IU/L or ALT(GPT) value ≥ 100 IU/L before registration
• Patients who have received erythrocyte transfusion within 16 weeks before registration
• Patients for whom a surgical operation involved with heavy bleeding is planned during the study period
• In addition, patients who are judged as ineligible to participate in this study by the investigator or sub-investigator