Eligible patients will have hypertension (3 consecutive sitting blood pressure readings >140 systolic and/or diastolic 90 mmHg without treatment or receiving treatment for known hypertension) and early CKD defined as an eGFR > 45 and <90 mL/min/1.73 m2 and/or urinary albumin:creatinine ratio >3 mg/mmol. This evidence concerns the gene ALB and hypertensive disorder.