Fetal Hemoglobin Quantitative Trait Locus 1, also known as hereditary persistence of fetal hemoglobin, is related to hereditary persistence of fetal hemoglobin-beta-thalassemia syndrome and hereditary persistence of fetal hemoglobin-sickle cell disease syndrome. An important gene associated with Fetal Hemoglobin Quantitative Trait Locus 1 is HBB (Hemoglobin Subunit Beta), and among its related pathways/superpathways are Response to elevated platelet cytosolic Ca2+ and Golgi-to-ER retrograde transport. The drug Chrysarobin has been mentioned in the context of this disorder. Affiliated tissues include bone marrow and myeloid, and related phenotypes are anemia and microcytic anemia