GSTM1 and thalassemia: Interestingly, Hb G-Georgia did not present any Hb A2 variant peak in hemoglobin analysis using the CE technique, observed in both heterozygote Hb G-Georgia and double heterozygote Hb G-Georgia and Hb E. Thus, this could be misconstrued as β+/β+ or β+/β0-thalassemia disease or β+-thalassemia with Hb E disease based on the Hb pattern, reflecting A2FA or EFA.