Hemoglobinopathy

Hemoglobinopathy
Other namesHemoglobinopathies
Red blood cells from a person with sickle cell disease, illustrating abnormal 'sickle' shaped red blood cells - key characteristic of the disease.
SpecialtyHematology 
SymptomsChronic anemia
ComplicationsEnlarged spleen, iron overload, death
Usual onsetDuring fetal development or very early infancy
TypesRelatively frequent: sickle cell disease, alpha thalassemia and beta thalassemia
CausesInherited disease
Diagnostic methodBlood smear, ferritin test, hemoglobin electrophoresis, DNA sequencing
Differential diagnosisIron deficiency anemia
PreventionGenetic counselling of potential parents, termination of pregnancy
TreatmentBlood transfusion, iron chelation, hematopoietic stem cell transplant

Hemoglobinopathy is the medical term for a group of inherited blood disorders involving the hemoglobin, the major protein of red blood cells.[1] They are generally single-gene disorders and, in most cases, they are inherited as autosomal recessive traits.[2][3]

There are two main groups: abnormal structural hemoglobin variants caused by mutations in the hemoglobin genes, and the thalassemias, which are caused by an underproduction of otherwise normal hemoglobin molecules. The main structural hemoglobin variants are HbS, HbE and HbC. The main types of thalassemia are alpha-thalassemia and beta thalassemia.[4][2]

  1. ^ CDC (2019-02-08). "Hemoglobinopathies Research". Centers for Disease Control and Prevention. Retrieved 2019-05-05.
  2. ^ a b Weatherall, D. J.; Clegg, J. B. (2001). "Inherited haemoglobin disorders: An increasing global health problem". Bulletin of the World Health Organization. 79 (8): 704–712. PMC 2566499. PMID 11545326.
  3. ^ Shakeel, Hassan (25 March 2023). "Thalassaemia — Knowledge Hub". Genomics Education Programme and NHS England. Retrieved 2025-01-01.
  4. ^ "Hemoglobinopathies and Thalassemia". medicalassistantonlineprograms.org/. Archived from the original on 2015-01-09. Retrieved 2013-11-07.