Alpha-Thalassemia in North Morocco: Prevalence and Molecular Spectrum

Table 2

Mutations and their allelic frequencies in the studied region.

Molecular defect	Allele frequencies (%)	Genotypes	N
-α^3.7	0.33	-α^3.7/ αα	6
		- / αα	1
		-α^3.7/ -α^3.7	2
-α^4.2	0.12	-α^4.2/ αα	2
		-α^4.2/ -α^4.2	1
-αα	0.06	-αα/ αα	2
HS-40	0.03	αα/ αα with HS-40 del	1
- -Med I	0.03	- -/αα	1