[High-dose cyclophosphamide for severe aplastic anemia associated with β-thalassemia: a case report and literatures review].

Objective: To investigate the clinical features and therapeutic method for severe aplastic anemia (SAA) associated with β-thalassemia, and to improve the recognition of the disease.

Methods: One patient hospitalized for pancytopenia was reported and the related literatures were reviewed.

Results: A 14-years old girl who presented with anemia from her childhood was hospitalized for acute onset of pancytopenia. Routine blood test showed that WBC count was 1.28×10⁹/L, hemoglobin 65 g/L, platelet count 18×10⁹/L, reticulocyte count 2×10⁹/L, neutrophil count 0.03×10⁹/L and mean corpuscular volume 59.6 fl, respectively. Both bone marrow aspiration and biopsy showed hypoplasia. Her red blood cells presented as microcytic hypochromic and target erythrocytes were common on peripheral blood smear. DNA analysis of the patient and her mother showed exon 17 heterozygous β-thalassemia (c.52 A>T). A diagnosis of SAA associated with β-thalassemia was clarified and high-dose cyclophosphamide (HD-CTX, 1.2 g/d×4 d) plus cyclosporine were offeved, which eventually led to a complete hematologic remission 12 months later.

Conclusion: This was the first report of SAA associated with β-thalassemia, and the regimen of HD-CTX led to a complete hematologic remission.