HBG2 and thalassemia: A study of a mix of Mediterranean (3/4) and Asian (1/4) patients from France used five genetic factors, β-thalassemia mutations, α-thalassemia, the Xmn1-HBG2, rs11886868 in BCL11A and rs9399137 in HBSB1L-MYB have 83.2% predictive accuracy16.