Microcytic Anemia, also known as iron-refractory iron deficiency anemia, is related to hypochromic microcytic anemia and fetal hemoglobin quantitative trait locus 1. An important gene associated with Microcytic Anemia is TMPRSS6 (Transmembrane Serine Protease 6), and among its related pathways/superpathways are Transport of inorganic cations/anions and amino acids/oligopeptides and Glucose / Energy Metabolism. The drugs Iron and Sodium citrate have been mentioned in the context of this disorder. Affiliated tissues include bone marrow and lymph node, and related phenotypes are homeostasis/metabolism and liver/biliary system