ICD-11 definition : Beta-thalassemia (BT) is a haemoglobinopathy characterised by deficiency (Beta ) or
absence (Beta0) of synthesis of the beta globin chains of haemoglobin (Hb). Three
main types of BT have been described: minor, intermedia and major with clinical presentation
ranging from asymptomatic forms to microcytic anaemia and splenomegaly due to defective
erythropiesis and haemolysis.;
Beta-thalassemia (BT) is a haemoglobinopathy characterised by deficiency (Beta ) or
absence (Beta0) of synthesis of the beta globin chains of haemoglobin (Hb). Three
main types of BT have been described: minor, intermedia and major with clinical presentation
ranging from asymptomatic forms to microcytic anaemia and splenomegaly due to defective
erythropiesis and haemolysis.