F2 and anemia (phenotype): Laboratory tests showed anemia (hemoglobin111.10g/L, normal range:115–150 g/L) and abnormalities in blood coagulation: prolonged prothrombin time (13.6 s, normal range), reduced prothrombin activity (73%, normal range:80%-160%), increased fibrinogen degradation products (10.77μg/mL, normal range:0-5μg/mL), and decreased D-dimer (4.72μg/mL, normal range:0-0.5μg/mL).