Clinical trial NCT01932450: Radiofrequency Ablation for ADPKD Blood Pressure and Disease Progression Control
Official title: A Randomized, Open-label Study Investigating the Effect of Bilateral Renal Artery Sympathetic Denervation by Catheter-based Radiofrequency Ablation on Blood Pressure and Disease Progression in Autosomal Dominant Polycystic Kidney Disease
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: PHASE2
Conditions: Autosomal Dominant Polycystic Kidney Disease
Hypertension
Keywords: hypertension
radiofrequency ablation
autosomal dominant polycystic kidney disease
Lead sponsor: Shanghai Changzheng Hospital
Sponsor class: OTHER
First posted: 2013-08-30
Enrollment: 100
Sex: ALL
Minimum age (years): 20
Maximum age (years): 60
Standard ages: ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: A randomized, open-label single-center study investigates the efficacy and safety of bilateral renal artery sympathetic denervation by catheter-based radiofrequency ablation on blood pressure and disease progression control in autosomal dominant polycystic kidney disease(ADPKD). The total number of study subjects will be 100. All of them have diagnosed with ADPKD and hypertension. Patients will be randomized 1:1 (50 with radiofrequency ablation(RFA), 50 only with drugs). Change in average office-based measurements of systolic blood pressure(SBP), average 24-hour systolic blood pressure by ambulatory blood pressure monitoring (ABPM) , incidence of office systolic blood pressure reductions of ≥10, ≥15 and ≥20 mm Hg , office diastolic blood pressure (DBP), number and dosage of blood pressure tablets, total kidney volume (TKV), total cyst volume (TCV), pain related to cystic kidneys and renal function, will be assessed at 12 months of follow-up. The safety variables will be assessed at every visit of follow-up.


Eligibility criteria: Inclusion Criteria:

* Patients with ADPKD.
* Having hypertension, defined as systolic blood pressure ≥140 mm Hg and/or diastolic blood pressure ≥90 mm Hg, and currently using 2 antihypertensive drugs and receiving a stable antihypertensive treatment regimen without change in dose or medication in the previous 30 days.
* Male and female patients 20 years to 60 years of age.
* Glomerular Filtration Rate (GFR) ≥30 ml/min/1.73 m2, estimated from serum creatinine using the Chronic Kidney Disease Epidemiology collaboration(CKD-EPI) equation.
* Have followed-up kidney and cyst volume at least 6 months in Shanghai Changzheng Hospital.
* Signed Informed Consent after being informed.

Exclusion Criteria:

* Documented renal vascular disease.
* Congenital absence of a kidney.
* Systemic illness with renal involvement.
* Spot urine albumin-to-creatinine ratio of \>0.5 g/g and/or findings suggestive of kidney disease other than ADPKD.
* Exclusions specific to MRI acquisition and measurement: cardiac pacemaker, presence of MRI incompatible metallic clips or other material, excessive body weight, untreatable claustrophobia.
* Contraindications to the catheter-based renal denervation procedure by RFA, including allergy to radioiodinated contrast agents. Anatomical abnormalities of the renal arteries which preclude RFA: presence in either kidneys of multiple main renal arteries, main renal artery stenosis \>50%, or main renal arteries of \<4 mm in diameter or \<20 mm in length.
* Contraindications on ethical grounds.
* Women who are pregnant or breast feeding.
* Intention to become pregnant during the course of the study.
* Lack of safe contraception: Female subjects of childbearing potential, not using and not willing to continue using a medically reliable method of contraception for the entire study duration, such as oral, injectable, or implantable contraceptives, or intrauterine contraceptive devices, or who are not using any other method considered sufficiently reliable by the investigator in individual cases (Female subjects who are surgically sterilized/hysterectomized or post-menopausal for longer than 2 years are not considered as being of child bearing potential).
* Other clinically significant concomitant disease states (hepatic dysfunction, cardiovascular disease, metastatic cancer).
* Known or suspected non-compliance, drug or alcohol abuse.
* Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia or confusional state of the subject.
* Participation in another study with investigational drug within the 30 days preceding and during the present study.
* Previous enrolment into the current study.
* Enrolment of the investigator, his/her family members, employees and other dependent persons.

Primary outcomes:
measure: office-based measurements of systolic blood pressure
timeFrame: baseline and 12 months (day 360±14)
Secondary outcomes:
measure: 24-hour systolic blood pressure by ambulatory blood pressure monitoring (ABPM)
timeFrame: baseline and 12 months (day 360±14)
measure: Incidence of office systolic blood pressure reduction
timeFrame: baseline and 12 months (day 360±14)
measure: office diastolic blood pressure
timeFrame: baseline and 12 months (day 360±14)
measure: number and dosage of blood pressure tablets
timeFrame: baseline and 12 months (day 360±14)
measure: estimated Glomerular Filtration Rate(eGFR)
timeFrame: baseline and 12 months (day 360±14)
measure: albuminuria
timeFrame: baseline and 12 months (day 360±14)
measure: total kidney volume (TKV)
timeFrame: baseline and 12 months (day 360±14)
measure: pain
timeFrame: baseline and 12 months (day 360±14)
measure: procedure-related complications at femoral puncture site
timeFrame: up to 1 year (after radiofrequency ablation)
measure: Renal artery lesion
timeFrame: up to 1 year (after radiofrequency ablation)
measure: New renal artery stenosis
timeFrame: up to 1 year (after radiofrequency ablation)
measure: Embolic events
timeFrame: up to 1 year (after radiofrequency ablation)
measure: hypotension
timeFrame: up to 1 year (after radiofrequency ablation)
measure: hypertension.
timeFrame: up to 1 year (after radiofrequency ablation)
measure: acute kidney injury
timeFrame: up to 1 year (after radiofrequency ablation)
measure: total cyst volume (TCV)
timeFrame: baseline and 12 months (day 360±14)
Other outcomes:
Locations:
city: Shanghai
country: China
facility: Department of Nephrology, Shanghai Changzheng Hospital
state: Shanghai
Study officials:
affiliation: Nephrology Department of Shanghai Changzheng Hospital
name: Changlin Mei, MD
role: PRINCIPAL_INVESTIGATOR
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