Mild anemia (Hb 10 g/dL), lymphopenia (nadir 0.3 x10^9/L), increased ferritin (4,023 mcg/L), D-dimer (1,864 mcg/L), and fibrinogen (602 mg/dL), and prolonged PT (1.27). The gene discussed is GSTM1; the disease is anemia.