GSTM1 and retinopathy of prematurity: The progressive reduction of HbF in preterm neonates with anemia of prematurity has been associated with retinopathy of prematurity (ROP) and other unfavorable outcomes.8,9 To raise the Hb concentration without depleting the physiological HbF reservoir, we explored a transfusion strategy based on erythrocyte concentrates obtained from allogeneic cord blood RBCs (CB-RBCs).10 How this approach may be associated with cerebral oxygenation is presently unknown.