 - Chinese ancestry, i.e. all four grandparents Chinese. Hypertension is defined as follows: systolic BP SBP greater than or equal to 160 mm Hg or diastolic BP DBP 95 mm Hg or taking 2 medications for high blood pressure Stage II hypertension. Alternatively the subject could have uncontrolled hypertension, i.e. taking 1 medication for high blood pressure and has either systolic BP 140 or diastolic 90 mm Hg. 