Nearly every malignant neoplasm has been described as having the capability to metastasize to bone. Of the estimated 1.2 million new cases of cancer diagnosed annually, more than 50% will eventually… (More)
The increasing availability of DNA sequencing of globin genes has improved our ability to detect conditions that were presumed to be extremely rare. These conditions may remain undiagnosed due to… (More)
Hemoglobin Abruzzo is a stable hemoglobin variant with increased oxygen affinity, clinically causing compensatory erythrocytosis in affected patients. Heterozygosity of this variant with or without… (More)
A new β hemoglobin (Hb) variant, Hb Cambridge-MA [β144(HC1)β146(HC3)Lys-Tyr-His→0 (AAG>TAG) (HGVS: HBB c.433 A>T] is described. The variant was characterized by high performance liquid chromatography… (More)
Hb Memphis [α23(B4)Glu→Gln; HBA2: c.70G > C (or HBA1)] is a stable hemoglobin (Hb) variant caused by a substitution of glutamine for glutamic acid at residue 23 of the α2- or α1-globin chain.… (More)
Hereditary erythrocytosis is associated with high oxygen affinity hemoglobin variants (HOAs), 2,3-bisphosphoglycerate deficiency and abnormalities in EPOR and the oxygen-sensing pathway proteins PHD,… (More)
A novel β(0)-thalassemia (β-thal) frameshift mutation, HBB: c.209delG; p.Gly70Valfs*20, is described in a 21-year-old African American female with β-thalassemia major (β-TM) due to compound… (More)
A previously unreported β chain hemoglobin (Hb) variant, Hb Grove City [β38(C4)Thr→Ser, ACC>AGC; HBB: c.116C>G], was discovered in a woman who presented with hypoxia and mild anemia. Her young… (More)
Hyperunstable hemoglobinopathy (HUH) [dominantly inherited β-thalassemia (β-thal)] is a relatively rare form of congenital hemolytic anemia in which mutations occur in the genes encoding for α and β… (More)
Hemoglobin (Hb) variants may be associated with low oxygen saturation and exacerbated episodes of anemia from common stressors such as viral infections. These attributes frequently cause increased… (More)