Correlations between Multiple SNPs and HbF Levels in β-Thalassemia Carriers

Area of Science:

• Genetics
• Hematology

Background:

• Increased hemoglobin F (HbF) expression ameliorates beta-thalassemia pathology and reduces mortality.
• Genetic factors influencing HbF levels are crucial for managing beta-thalassemia.

Purpose of the Study:

• To investigate the correlation between specific single nucleotide polymorphisms (SNPs) and HbF levels in beta-thalassemia carriers.
• To identify genetic modulators of HbF expression in beta-thalassemia.

Main Methods:

• Genotyping of 330 beta-thalassemia carriers using Sanger sequencing.
• Analysis of six SNPs: rs4671393 (BCL11A), rs7482144 (XmnI-HBG2), rs28384513 (HBS1L-MYB), rs4895441, rs9399137 (HBS1L-MYB), and rs4527238 (ANTXR1).

Main Results:

• SNPs rs4671393 (BCL11A), rs7482144 (Xmn1-HBG2), and rs9399137 (HBS1L-MYB) correlated with HbF levels in beta-thalassemia carriers (p < 0.05).
• SNPs rs28384513 (HBS1L-MYB) and rs4527238 (ANTXR1) were associated with HbF expression in beta-thalassemia minor (p < 0.05).

Conclusions:

• The study identified significant correlations between specific SNPs and HbF levels in beta-thalassemia carriers.
• SNP rs4527238 in the ANTXR1 gene is suggested as a novel modulator of HbF levels in beta-thalassemia carriers.