A Novel -72 (T→A) β-Promoter Mutation Causing Slightly Elevated HbA₂ in a Vietnamese Heterozygote

Figure 3

Relative luciferase activity of mutants β-globin promoters. WT: wild type promoter, -87: promoter containing the -87 C→G mutation, -72: promoter containing the -72 T→A mutation, -71: promoter containing the -71 C→T mutation.