Molecular genetics analysis of genes BCL11A, HBS1L-MYB, and HBG2 variants association in thalassemic children.

Association of the BCL11A (rs4671393), HBG2 (rs7482144), and HBG2HBS1L-MYB (rs28384513, rs9399137, and rs4895441) variants with susceptibility to thalassemia was observed. Blood samples from 600 individuals, including 300 thalassemia patients and 300 controls, age- and gender-matched, were collected. DNA was extracted, followed by DNA Amplification. Results show that the homozygous mutant (GG) of variant rs4671393 of the BCL11A gene showed a strong association with increased risk of thalassemia by 3-fold (OR = 3.05; p = 0.0002), heterozygous (AG) also showed a strong association but with a decreased risk (OR = 0.49; p = 0.0028). The heterozygote (AC) and the mutant of variant rs28384513 of gene HBG2HBS1L-MYB showed a significant association by increasing the risk of thalassemia by 2-fold (OR = 2.07; p = 0.001; OR = 2.79; p = 0.0002, respectively). In the case of rs4895441 of gene HBS1L-MYB, the AG heterozygote showed a significant association by increasing the risk by 2.55-fold (OR = 2.55; p = 0.0002). For gene HBG2, the heterozygote (CT) of the rs7482144 variant significantly decreased the risk of thalassemia (OR = 0.37; p = 0.0001). Its homozygous mutant (TT) also showed a significant association, but with an increased risk of thalassemia by 2-fold (OR = 1.81; p = 0.036).       . The polymorphisms rs4671393 (BCL11A), rs7482144 (HBG2), and rs28384513, rs9399137, and rs4895441 (HBS1L-MYB) are significantly associated with an increased risk of thalassemia.