Randomised Study Comparing Different Dosages of Rabbit ATG in Patients With SAA

A Prospective Randomized Multicenter Study Comparing Different Dosages of Rabbit Antithymocyte Globulin (Thymoglobuline) in Patients With Severe Aplastic Anemia

The objective of this study is to evaluate the feasibility and effectiveness of immunosuppressive therapy (IST) using rabbit anti-thymocyte globulin (ATG) (Thymoglobuline, Genzyme) for patients with very severe aplastic anemia (VSAA) and severe aplastic anemia (SAA) as a primary therapy. The primary endpoint is the response rate (complete response (CR) + partial response (PR)) at day 180 after the start of IST. Secondary endpoints include evaluation of the presence and frequency of Epstein-Barr virus (EBV)-reactivation and EBV-associated lymphoproliferative disorder (EBV-LPD), Cytomegalovirus(CMV)-reactivation and CMV associated diseases, the response rate (CR+PR) on Day 360 after the start of IST, relapse rate and overall survival.

Inclusion Criteria:

• Acquired aplastic anemia
• Age: younger than 70 years old
• Severity: SAA, VSAA.
• Interval between diagnosis and registration <6 months.
• Written informed consent from the caretakers and/or whenever possible consent from the patient.

Exclusion Criteria:

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