Univariate analysis showed that β2-AR genotypes (C/G and G/G), age and diabetes mellitus were associated with CAD, whereas elevated cholesterol (p = .313), elevated triglycerides (p = .220), family history of CAD (p = .395), gender (p = .057), hypertension (p = .894) and myocardial infarction (p = .614) were not, see Table 3. Here, ADRB2 is linked to hypertensive disorder.