This study used as the comparative drug (epoetin beta) will assess the efficacy and safety of intravenous injections of R744 in renal anemia patients on Hemodialysis patients.

Inclusion Criteria:

• Patients who have been receiving hemodialysis 3 times a week for at least 12 weeks before registration
• Patients aged ≥ 20 years at the time of obtaining consent
• Patients who have been receiving a rHuEPO preparation at least once a week for at least 8 weeks before registration
• Within 4 weeks before registration, patients who have been receiving a rHuEPO preparation 750IU (3 times a week), 1,500IU (twice a week (1st and 2nd hemodialysis day of the week, or1st and 3rd hemodialysis day of the week)), 1,500IU (3 times a week), or 3,000IU (twice a week (1st and 2nd hemodialysis day of the week, or1st and 3rd hemodialysis day of the week)), and patients who have not change dosage and administration.
• Patients whose pre-dialysis Hb concentrations has been between ≥ 9.0 g/dL and ≤12.0 g/dL and mean value of pre-dialysis Hb concentrations has been between ≥ 9.5 g/dL and ≤11.5 g/dL determined at the beginning of each week within 8 weeks before registration
• Patients whose transferrin saturation has been ≥ 20 % or ferritin has been ≥ 100ng/mL at any time point within 8 weeks before registration

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 within 12 weeks 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 in 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, testosterone propionate, methyltestosterone 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 accompanied by marked bleeding is planned during the study period
• In addition, patients who are judged as ineligible to participate in this study by the investigator or subinvestigator