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International First-in-Human Study of the EnligHTN Generation 2 System in Patients With Drug-resistant Uncontrolled Hypertension (EnligHTN III)

This study has been completed.
Information provided by (Responsible Party):
St. Jude Medical Identifier:
First received: April 16, 2013
Last updated: October 19, 2015
Last verified: October 2014
The purpose of this First-in-Human Clinical investigation is to evaluate the safety and performance of the St. Jude Medical EnligHTN™ Generation 2 Renal Denervation System for the treatment of patients with drug-resistant uncontrolled hypertension.

Condition Intervention
Hypertension Renal Denervation Device: EnligHTN™ Renal Artery Ablation Catheter

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment

Further study details as provided by St. Jude Medical:

Primary Outcome Measures:
  • Safety Objective [ Time Frame: 6 months ]
    To characterize the rate of serious procedural and device related adverse events from date of procedure through 6 months post procedure, as adjudicated by the Clinical Events Committee (CEC).

  • Performance objective [ Time Frame: 6 months ]
    To characterize the reduction of office Systolic Blood Pressure at 6 months post procedure as compared to baseline.

Secondary Outcome Measures:
  • Change in Ambulatory Blood Pressure [ Time Frame: 1 month, 3 month, 6 month, 12 month, 18 month, 2 years ]
    Characterization of the change in Ambulatory Blood Pressure parameters over time as compared to baseline

  • New renal artery stenosis or aneurysm at the site of ablation [ Time Frame: 1 month, 3 month, 6 month, 12 month, 18 month, 2 years ]
    Characterization of renovascular safety as measured by new renal artery stenosis or aneurysm at the site of ablation over time as compared to baseline

  • Renal Function Change [ Time Frame: 1 month, 3 month, 6 month, 12 month, 18 month, 2 years ]
    Characterization of renal function change over time as compared to baseline as measured by changes in: eGFR, serum creatinine and cystatin C

Enrollment: 39
Study Start Date: April 2013
Study Completion Date: September 2015
Primary Completion Date: March 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Renal Artery Ablation Device: EnligHTN™ Renal Artery Ablation Catheter


Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Subject is ≥ 18 and ≤ 80 years of age at time of consent
  • Subject must be able and willing to provide written informed consent
  • Subject must be able and willing to comply with the required follow-up schedule
  • Subject has office Systolic Blood Pressure ≥ 160 mmHg at confirmatory visit
  • Subject has a daytime mean Systolic Ambulatory Blood Pressure > 135 mmHg during the two week screening period
  • Subject has an office Systolic Blood Pressure that remains ≥160 mmHg despite the stable use of ≥3 antihypertensive medications concurrently at maximally tolerated doses, of which one is a diuretic or subject was previously on diuretic but documented to be diuretic intolerant, for a minimum of 14 days prior to the procedure and with an expectation to maintain for a minimum of 180 days post procedure.

Exclusion Criteria:

  • Subject has significant renovascular abnormalities such as renal artery stenosis > 30% in either renal artery
  • Subject has undergone prior renal angioplasty, renal denervation, indwelling renal stents, and/or abdominal aortic stent grafts
  • Subject has hemodynamically significant valvular heart disease as determined by the Study Investigator
  • Subject has a life expectancy less than 12 months, as determined by a Study Investigator
  • Subject is participating in another clinical study which has the potential to impact their hypertension management (pharmaceutical/device/homeopathic)
  • Subject is pregnant, nursing, or of childbearing potential and is not using adequate contraceptive methods
  • Subject has active systemic infection
  • Subject has renal arteries with diameter(s) < 4 mm in diameter or <20 mm in length
  • Subject has an estimated Glomerular Filtrate Rate (eGFR) <45 mL/min per 1.73 m2 using the Modified Diet in Renal Disease (MDRD) formula
  • Subject has Diabetes Mellitus Type I
  • Subject has multiple main renal arteries in either kidney
  • Subject has an identified secondary cause of hypertension (for example, including, but not limited to, Polycystic kidney disease, Cushing's syndrome, Aldosteronism)
  • Subject has evidence of significant abdominal aortic aneurysm (defined as maximum diameter of >4 cm)
  • Subject has had a myocardial infarction, unstable angina pectoris or cerebrovascular accident less than 180 days prior to enrollment
  • Subject is expected to have cardiovascular intervention within the next 180 days
  • Subject has a condition which would interfere with the accurate interpretation of the study objectives including but not limited to a large arm diameter that is unable to accommodate the blood pressure cuff or arrhythmia that interferes with automatic pulse sensing.
  Contacts and Locations
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Please refer to this study by its identifier: NCT01836146

Australia, South Australia
St Andrews Hospital
Adelaide, South Australia, Australia
Australia, Victoria
St. Vincent's Hospital Melbourne
Fizroy, Victoria, Australia
Monash Heart/Southern Health
Melbourne, Victoria, Australia
Royal Melbourne Hospital
Melbourne, Victoria, Australia
New Zealand
Auckland City Hospital
Auckland, New Zealand, 1023
Dunedin Hospital
Dunedin, New Zealand, 9016
Sponsors and Collaborators
St. Jude Medical
  More Information

Responsible Party: St. Jude Medical Identifier: NCT01836146     History of Changes
Other Study ID Numbers: 1202
Study First Received: April 16, 2013
Last Updated: October 19, 2015

Additional relevant MeSH terms:
Vascular Diseases
Cardiovascular Diseases processed this record on September 19, 2017