A 9-month-old male with no significant past medical history presented with severe anemia (Hb 3 g/dL, MCV 111, low retic count). There is no family history of any blood cancers, bleeding/clotting disorders, anemia, or other genetic syndromes. He is reportedly developing appropriately. He has been formula fed his entire life. After RBC transfusion, born marrow was biopsied and showed the following findings. Further history from parents indicates that pt might had chronic anemia.