GSTM1 and anemia (phenotype): Fetal biological parameters (Table 1) also suggested fetal infection with elevated total IgM (120 [<20 mg/l]); β2-Microglobulin 4.8 [<5 mg/ml]) and a cholestasis-like pattern (GGT 589 [<100 UI/l], AST 17 [<20 UI/l]), associated with moderate anemia and thrombocytopenia (Hb 13.4 [>15 g/100 ml], platelets 128 [>150 G/L]).