causes or contributes to condition modifies contributes to genotype causes or contributes to molecular phenotype Increased Hemoglobin F Hereditary Persistence of Fetal Hemoglobin Beta-Globin Locus Deletion Other HBB Variants Sickle Cell Disease-S/HPFH HBB, 106-KB DEL SCDO (Jade Hotchkiss) Request inclusion into relevant ontology Negligable HPFH1 A 106-kb deletion of the beta globin gene cluster. Hemoglobin Genotype S/HPFH Hereditary Persistence of Fetal Hemoglobin Genotype Hemoglobin F Level