however , individuals heterozygous for both beta e and beta thalassaemia ( hbe/beta thalassaemia ) have a severe clinical disorder which in some cases may approach that seen in homozygous beta thalassaemia and which is by far the commonest form of symptomatic thalassaemia in the indian subcontinent and south-east asia .
C0005283
beta thalassaemia
C0039730
thalassaemia