A novel Zip2 Gln/Arg/Leu codon 2 polymorphism is associated with carotid artery disease in aging

Zinc deficiency represents a risk factor for carotid stenosis (CS) development. In mammals, members of the ZIP family regulate zinc uptake, and hZip2 is a human zinc importer upregulated by zinc depletion. The purpose of this study was to investigate the association of a novel Zip2 Gln/Arg/Leu codon 2 polymorphism with CS, analyzing 250 CS patients and 259 elderly controls. CS patients showed an increased GG genotype frequency (60% vs. 47.5%), and a reduced TT frequency (6% vs. 10%) (p < 0.05 by chi(2) test). In conclusion, Zip2 Gln/Arg/Leu polymorphism plays a role in the susceptibility to carotid artery disease.