In the whole cohort, independently of radiation exposure, we did not observe statistically significant differences in the frequencies of IL6-174 genotypes according to carotid plaque presence, increased IMT or stenosis ≥30% (in the dominant or the recessive models) after adjustment for gender, age, hypertension, diabetes, and smoking habits (Table 3 and S2 Table). The gene discussed is IL6; the disease is diabetes mellitus.