GLS and diabetic retinopathy: Two SNPs that failed to show an allele specific effect in our study has been shown to affect the expression of another closely located gene (rs10501156-TRAF6 [29], rs1019096-ZP3 [28, 30]) and two of our suggested eQTL SNPs (rs6741418/GLS and rs7254060/INSR) are in LD with another SNP that is associated with a specific phenotype (rs6741418/rs10497709: fasting triglyceride levels [31], rs6741418/rs3024896: fasting insulin levels [32], rs7254060/rs2115386: diabetic retinopathy [33]).