A largely higher frequency was found for the CAT −844 G wild-type allele in comparison with the A mutated allele (0.79 versus 0.21). Notably, the −844 A mutated allele was only found in heterozygous state, with the GA heterozygous genotype being represented in 42.8% (n = 12) of the recruited subjects. The GG wild-type genotype was present in 57.2% (n = 16) of the study cohort.