ICD-11 definition : Hemoglobin E disease is characterised by the synthesis of an abnormal hemoglobin called
hemoglobin E (HbE), instead of the normal hemoglobin A (HbA). Subjects heterozygous
for HbE (AE) have an asymptomatic condition with no clinical relevance, except for
the risk of transmitting E/beta thalassemia if the other parent carries beta thalassemia.
The severity of these E/beta thalassemia forms is very variable, the clinical picture
ranging from that of beta thalassemia minor through to thalassemia intermedia to thalassemia
major. Subjects homozygous for HbE (EE) are asymptomatic.;
Hemoglobin E disease is characterised by the synthesis of an abnormal hemoglobin called
hemoglobin E (HbE), instead of the normal hemoglobin A (HbA). Subjects heterozygous
for HbE (AE) have an asymptomatic condition with no clinical relevance, except for
the risk of transmitting E/beta thalassemia if the other parent carries beta thalassemia.
The severity of these E/beta thalassemia forms is very variable, the clinical picture
ranging from that of beta thalassemia minor through to thalassemia intermedia to thalassemia
major. Subjects homozygous for HbE (EE) are asymptomatic.