16 The classification illustrated in Table 16.1 is based on the mode of inheritance of thalassaemia. Table 16.1 Classification of thalassaemia
The thalassaemias
Classification
Type of thalassaemia
Heterozygote
Homozygote
α-Thalassaemia1
α0 (– –/)
Thal. minor
Hydrops fetalis
α+ (–α/)
Thal. minor
Thal. minor
β-Thalassaemia
β0
Thal. minor
Thal. major
β+
Thal. minor
Thal. major or intermedia
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