Efficacy and Safety of Renal Denervation on Isolated Diastolic Hypertension

January 28, 2026 updated by: Ya-Wei Xu, Shanghai 10th People's Hospital

Efficacy and Safety of Renal Denervation on Isolated Diastolic Hypertension: A Multicenter, Double-Blind, Randomized, Sham-Controlled Clinical Trial

This study aims to evaluate the efficacy and safety of renal denervation (RDN) in patients with isolated diastolic hypertension (IDH). The randomized, double-blind, sham-controlled, multicenter clinical trial will recruit 124 participants (62 in the treatment group and 62 in the sham control group) to assess changes in mean 24-hour ambulatory diastolic blood pressure over a 6-month follow-up period. The study is expected to provide evidence for the use of RDN as a treatment for IDH.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
124

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • China
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, China, 200072
        • Department of Cardiology, Shanghai Tenth People's Hospital
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria

  1. Age ≥18 years, with no restriction on sex or ethnicity;
  2. Diagnosis of primary hypertension, with no prior use of antihypertensive medication, and in the untreated state presenting with office systolic blood pressure (SBP) <140 mmHg and diastolic blood pressure (DBP) ≥90 mmHg, as well as 24-hour ambulatory blood pressure monitoring (ABPM) showing SBP <130 mmHg and DBP ≥80 mmHg;
  3. Willingness to participate and provision of written informed consent.

Exclusion Criteria

  1. DBP ≥110 mmHg;
  2. Secondary hypertension;
  3. Requirement for antihypertensive or blood pressure-lowering medications due to comorbid conditions (e.g., SGLT2 inhibitors, GLP-1 receptor agonists);
  4. Cardiac arrhythmias interfering with blood pressure measurement (e.g., atrial fibrillation);
  5. Contraindications to RDN, including renal transplantation, renal insufficiency (eGFR <45 mL/min/1.73 m²), renal artery anatomy unsuitable for the procedure (inability to access the renal vasculature; renal artery diameter <4 mm or length <20 mm; hemodynamically or anatomically significant renal artery abnormalities or stenosis; prior coronary or renal artery interventions including angioplasty or stenting), and severe hepatic impairment;
  6. Contraindications to interventional procedures such as coagulopathy;
  7. Pregnancy, planning pregnancy, or breastfeeding;
  8. Life expectancy <1 year;
  9. Participation in another clinical trial.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Sham Comparator: Sham Control Group
Procedure: Renal Angiography
Renal angiography was performed under intravenous anesthesia via femoral artery access, and the procedure lasted approximately 1 hour to simulate the duration of active RDN.
Experimental: Renal Denervation Group
Procedure: Renal Denervation
Renal denervation (RDN) was performed using radiofrequency ablation in the cardiac catheterization laboratory equipped with a digital subtraction angiography (DSA) system. Under intravenous anesthesia, femoral artery access was obtained and a renal denervation sheath was advanced. An ablation catheter was then introduced to both renal arteries, and ablations were applied across four quadrants to achieve circumferential denervation. Throughout the procedure, vital signs were continuously monitored, and vasodilators or anticholinergics (e.g., nitroglycerin, atropine) were prepared to prevent vascular spasm or related complications. After completion, the femoral access site was closed and compressed, and patients were returned to the ward following stabilization of vital signs.
Procedure: Renal Angiography
Renal angiography was performed under intravenous anesthesia via femoral artery access, and the procedure lasted approximately 1 hour to simulate the duration of active RDN.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Changes in mean 24-hour ambulatory diastolic blood pressure at 6-month follow-up
Time Frame: 6 months after intervention
6 months after intervention

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
The proportion of patients achieving hypertension control without antihypertensive medication at the 6-month follow-up
Time Frame: 6 months after intervention
Hypertension control without antihypertensive medication was defined as the absence of two consecutive adjudications by the Clinical Event Committee (CEC) indicating a need for oral antihypertensive therapy during the follow-up period. The CEC performed 7 adjudications throughout the study based on office blood pressure measurements obtained at biweekly visits. The CEC was blinded to treatment allocation.
6 months after intervention
Changes in 24-hour ambulatory systolic/diastolic blood pressure (daytime, nighttime, and overall periods) at the 6-month follow-up
Time Frame: 6 months after intervention
6 months after intervention
Changes in office systolic/diastolic blood pressure at 3, 6, and 12 months of follow-up
Time Frame: 3/6/12 months after intervention
3/6/12 months after intervention
Changes in home/office systolic/diastolic blood pressure at 3, 6, and 12 months of follow-up
Time Frame: 3/612 months after intervention
3/612 months after intervention
The incidence of procedure-related adverse events and complications at 6-month follow-up
Time Frame: 6 months after intervention
Procedure-related adverse events and complications include renal artery stenosis, major bleeding, non-stroke thromboembolic events, renal artery stenosis or dissection, access site complications, severe vascular complications, and rehospitalization for cardiovascular events.
6 months after intervention
The incidence of major adverse cardiovascular and cerebrovascular events (MACCE) and all-cause mortality at 6-month follow-up
Time Frame: 6 months after intervention
MACCE includes cardiovascular and cerebrovascular mortality, stroke, and acute heart failure.
6 months after intervention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Shanghai 10th People's Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 30, 2028

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 31, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 14, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 14, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 20, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 2, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 28, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
January 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • STOP

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings