CCL7 and cardiovascular disorder: The association of this variant, at the 3'end of the CCL7 gene, with the healthy phenotype is of interest and, accordingly, since the propensity score approach used in this study eliminates differences in other risk factors, setting a background to detect genetic modifiers, it has not been previously linked with cardiovascular disease, as suggested by GWAS exploring the association of genetic variants with a variety of cardiovascular disease-associated traits (56).