The effect of medications from the family of beta blockers also depends on the structure of their receptors. These receptors are found in the vessels and the heart, i.e. the target site of action of these drugs. The ADRB1 gene contains information about the structure of these receptors. Even a tiny change in this gene, determined by rs1801253, can reduce the effects of these drugs on heart failure. Are you curious to know what effect you may expect from beta blockers should the need for such drugs arise in your case?
More information about genetic testing for medications.