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[Anti-thymocyte globulin therapy in severe aplastic anemia: an alternative to bone marrow transplantation]
Eight patients with severe aplastic anemia (SAA) and two patients with congenital hypoplastic anemia (CHA) were treated with absorbed samples of rabbit anti-thymocyte globulin (ATG) at a total dose of 50-75 mg/kg body weight intravenously over 5 days. Duration of the disease was 1-14 years. Median age of the ten patients was 11 (4-15) years. Four of the eight patients with SAA were responders and transfusion independent for a follow up of 11 to 50 months. In two cases thrombocytopenia of about 100 000/mm3 is present. Four patients were non-responders three of them died in the meantime by the underlining disease. Two patients with CHA did not respond to ATG treatment. The CFU-C level of all eight patients with SAA before treatment was severely decreased. In co-culture studies with normal bone marrow no growth inhibition of normal bone marrow could be demonstrated. Also 20% patients serum did not inhibit normal bone marrow growth. The results are compared with data from literature and discussed in respect to alternative therapies.
Eight patients with severe aplastic anemia (SAA) and two patients with congenital hypoplastic anemia (CHA) were treated with absorbed samples of rabbit anti-thymocyte globulin (ATG) at a total dose of 50-75 mg/kg body weight intravenously over 5 days. Duration of the disease was 1-14 years. Median age of the ten patients was 11 (4-15) years. Four of the eight patients with SAA were responders and transfusion independent for a follow up of 11 to 50 months. In two cases thrombocytopenia of about 100 000/mm3 is present. Four patients were non-responders three of them died in the meantime by the underlining disease. Two patients with CHA did not respond to ATG treatment. The CFU-C level of all eight patients with SAA before treatment was severely decreased. In co-culture studies with normal bone marrow no growth inhibition of normal bone marrow could be demonstrated. Also 20% patients serum did not inhibit normal bone marrow growth. The results are compared with data from literature and discussed in respect to alternative therapies.