Drug-eluting Balloon for Treatment of Non-atherosclerotic Renal Artery Stenosis--a Multicenter Study

Inclusion Criteria: * age between 18y and 45y. * with ≥ 60% stenosis in at least one renal artery. * with hypertension (systolic blood pressure ≥140 mmHg or diastolic blood pressure ≥ 90 mmHg). * patients with no severe renal insufficiency (eGFR\>30 ml/min, length of the kidney ≥ 7cm). * Good compliance. * with informed consent. Exclusion Criteria: * With apparent atherosclerotic risk factors. * With renal intervention or surgery history. * With congenital anatomical anomaly. * With severe renal insufficiency (length of the target kidney \< 7cm, total * eGFR\<30ml/min, divided eGFR of the target kidney\<8 ml/min) * With contraindication for antiplatelet therapy. * With severe cardiopulmonary insufficiency. * Allergic to contrast medium * Being pregnant or preparing for pregnancy * With active cancer. * Life expectancy \< 12 month * Without informed consent