Erythrocytosis, Familial, 8, also known as hemolytic anemia due to diphosphoglycerate mutase deficiency, is related to primary polycythemia and deficiency anemia. An important gene associated with Erythrocytosis, Familial, 8 is BPGM (Bisphosphoglycerate Mutase), and among its related pathways/superpathways are Transport of inorganic cations/anions and amino acids/oligopeptides and Oxidation by cytochrome P450. Affiliated tissues include bone marrow and bone, and related phenotypes are polycythemia and increased hematocrit