• iron
  • Four new mutations in the erythroid-specific 5-aminolevulinate synthase (ALAS2) gene causing X-linked sideroblastic anemia: increased pyridoxine responsiveness after removal of iron overload by phlebotomy and coinheritance of hereditary hemochromatosis. (diseaseinfosearch.org)
  • The most common causes of this kind of anemia are iron deficiency and thalassemia. (wikipedia.org)