The patient had neutropenia, anemia,and pneumonia, rapidly developed acute respiratory distress syndrome (ARDS), and died on day 4 of hospitalization.Her WBC count was 0.4 × 103 mm-3 (normal range: 4.3-10.3 × 103 mm-3) and Hb was 10.8 g dL–1 (normal range: 11.5-16.0 g dL–1). The gene discussed is GSTM1; the disease is anemia (phenotype).