Hypertension is a chronic condition and a contributing risk factor for cardiovascular and kidney disease. According to the US National Library of Medicine, hypertension affects 76.4 million people in the United States.
Hypertension can be a difficult condition to treat successfully. The National Review of Nephrology notes that although a considerable number of drugs are available to treat hypertension, blood pressure control is only achieved in approximately 50% of patients. Among other reasons for poor blood pressure control, the inability to predict the appropriate drug for an individual patient is a likely contributor.