Trial Outcomes & Findings for A Feasibility Study to Evaluate the Effect of Concomitant Renal Denervation and Cardiac Ablation on AF Recurrence (NCT NCT01907828)

NCT ID: NCT01907828

Last Updated: 2020-05-22

Results Overview

The freedom from atrial fibrillation was assessed based on electrocardiographic data during nine months following the blanking period including the one week recording coinciding with the 12 month follow-up visit (9 months following the 3 month blanking period).

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

61 participants

Primary outcome timeframe

12 months

Results posted on

2020-05-22

Participant Flow

Study enrollment was completed with a total of 61 participants randomized at 2 sites in Germany. The first and last participants were enrolled on May 12, 2014, and July 21, 2016, respectively.

Participant milestones

Participant milestones
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
Participants treated with cardiac ablation alone.
Overall Study
STARTED
39
22
Overall Study
Underwent Procedure
39
20
Overall Study
1-month Follow-up
37
17
Overall Study
3-month Follow-up
36
16
Overall Study
6-month Follow-up
35
16
Overall Study
12-month Follow-up
34
16
Overall Study
24-month Follow-up
32
16
Overall Study
COMPLETED
32
16
Overall Study
NOT COMPLETED
7
6

Reasons for withdrawal

Reasons for withdrawal
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
Participants treated with cardiac ablation alone.
Overall Study
Exclusion criteria not met
0
1
Overall Study
Withdrawal by Subject
3
4
Overall Study
Lost to Follow-up
3
0
Overall Study
Participant refused 24-month follow-up
1
0
Overall Study
Participant met exclusion criteria
0
1

Baseline Characteristics

Race and Ethnicity were not collected from any participant.

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=39 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=22 Participants
Participants treated with cardiac ablation alone.
Total
n=61 Participants
Total of all reporting groups
Age, Continuous
66.3 years
STANDARD_DEVIATION 7.9 • n=39 Participants
63.0 years
STANDARD_DEVIATION 9.9 • n=22 Participants
65.1 years
STANDARD_DEVIATION 8.7 • n=61 Participants
Sex: Female, Male
Female
19 Participants
n=39 Participants
10 Participants
n=22 Participants
29 Participants
n=61 Participants
Sex: Female, Male
Male
20 Participants
n=39 Participants
12 Participants
n=22 Participants
32 Participants
n=61 Participants
Race and Ethnicity Not Collected
0 Participants
Race and Ethnicity were not collected from any participant.
Region of Enrollment
Germany
39 Participants
n=39 Participants
22 Participants
n=22 Participants
61 Participants
n=61 Participants
Height
172.7 cm
STANDARD_DEVIATION 10.1 • n=39 Participants
173.6 cm
STANDARD_DEVIATION 9.4 • n=22 Participants
173.0 cm
STANDARD_DEVIATION 9.8 • n=61 Participants
Weight
95.4 kg
STANDARD_DEVIATION 17.9 • n=39 Participants
93.7 kg
STANDARD_DEVIATION 19.1 • n=22 Participants
94.8 kg
STANDARD_DEVIATION 18.2 • n=61 Participants
Body mass Index (BMI)
31.9 kg/m^2
STANDARD_DEVIATION 5.0 • n=39 Participants
31.0 kg/m^2
STANDARD_DEVIATION 5.4 • n=22 Participants
31.6 kg/m^2
STANDARD_DEVIATION 5.1 • n=61 Participants
Office Blood Pressure
Office Systolic Blood Pressure
162.0 mmHg
STANDARD_DEVIATION 18.6 • n=39 Participants
167.1 mmHg
STANDARD_DEVIATION 18.5 • n=22 Participants
163.9 mmHg
STANDARD_DEVIATION 18.5 • n=61 Participants
Office Blood Pressure
Office Diastolic Blood Pressure
87.5 mmHg
STANDARD_DEVIATION 14.1 • n=39 Participants
91.4 mmHg
STANDARD_DEVIATION 10.6 • n=22 Participants
88.9 mmHg
STANDARD_DEVIATION 13.0 • n=61 Participants
Office Heart Rate
81.3 beats per minute (bpm)
STANDARD_DEVIATION 23.9 • n=39 Participants
76.7 beats per minute (bpm)
STANDARD_DEVIATION 19.5 • n=22 Participants
79.7 beats per minute (bpm)
STANDARD_DEVIATION 22.4 • n=61 Participants
Number of Participants with a history of renal assessment prior to enrollment
2 Participants
n=39 Participants
0 Participants
n=22 Participants
2 Participants
n=61 Participants
New York Heart Association (NYHA) Class of Cardiac Disease
Class I
10 Participants
n=39 Participants
11 Participants
n=22 Participants
21 Participants
n=61 Participants
New York Heart Association (NYHA) Class of Cardiac Disease
Class II
24 Participants
n=39 Participants
10 Participants
n=22 Participants
34 Participants
n=61 Participants
New York Heart Association (NYHA) Class of Cardiac Disease
Class III
5 Participants
n=39 Participants
1 Participants
n=22 Participants
6 Participants
n=61 Participants
New York Heart Association (NYHA) Class of Cardiac Disease
Class IV
0 Participants
n=39 Participants
0 Participants
n=22 Participants
0 Participants
n=61 Participants
Medical History
Myocardial Infarction
1 Participants
n=39 Participants
3 Participants
n=22 Participants
4 Participants
n=61 Participants
Medical History
Coronary Artery Disease
5 Participants
n=39 Participants
7 Participants
n=22 Participants
12 Participants
n=61 Participants
Medical History
Valvular Disease
27 Participants
n=39 Participants
15 Participants
n=22 Participants
42 Participants
n=61 Participants
Medical History
Arrhythmia
39 Participants
n=39 Participants
22 Participants
n=22 Participants
61 Participants
n=61 Participants
Medical History
Cardiomyopathy
2 Participants
n=39 Participants
1 Participants
n=22 Participants
3 Participants
n=61 Participants
Medical History
Neurological events/Dysfunction
2 Participants
n=39 Participants
2 Participants
n=22 Participants
4 Participants
n=61 Participants
Medical History
Hyperlipidemia
20 Participants
n=39 Participants
11 Participants
n=22 Participants
31 Participants
n=61 Participants
Medical History
Diabetes
16 Participants
n=39 Participants
7 Participants
n=22 Participants
23 Participants
n=61 Participants
Medical History
Smokers
17 Participants
n=39 Participants
4 Participants
n=22 Participants
21 Participants
n=61 Participants
Medical History
Significant Alcohol Intake
6 Participants
n=39 Participants
0 Participants
n=22 Participants
6 Participants
n=61 Participants
Medical History
Obstructive Sleep Apnea
3 Participants
n=39 Participants
1 Participants
n=22 Participants
4 Participants
n=61 Participants
Medical History
Thyroid Disease
8 Participants
n=39 Participants
6 Participants
n=22 Participants
14 Participants
n=61 Participants
Medical History
Liver Disease
2 Participants
n=39 Participants
4 Participants
n=22 Participants
6 Participants
n=61 Participants
Medical History
Other Additional Medical History
38 Participants
n=39 Participants
18 Participants
n=22 Participants
56 Participants
n=61 Participants

PRIMARY outcome

Timeframe: 12 months

Population: Data not collected from all participants: data were available for only 28 participants in the RDN+AF group, and 12 participants in the AF group

The freedom from atrial fibrillation was assessed based on electrocardiographic data during nine months following the blanking period including the one week recording coinciding with the 12 month follow-up visit (9 months following the 3 month blanking period).

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=28 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=12 Participants
Participants treated with cardiac ablation alone.
Number of Participants With Freedom From Atrial Fibrillation at 12 Month
16 Participants
4 Participants

SECONDARY outcome

Timeframe: 7 days, 6 months, 12 months, and 24 months post procedure

Population: For each group, the outcome measure was analyzed in participants randomized at baseline

Major adverse cardiac events (MACE) were summarized as a percentage based on number of subjects at baseline for each group (RDN+AF group = 39, AF group = 22).

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=39 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=22 Participants
Participants treated with cardiac ablation alone.
Major Adverse Cardiac Events (MACE)
MACE within 7 days of procedure
0 Participants
2 Participants
Major Adverse Cardiac Events (MACE)
MACE within 6 months of procedure
0 Participants
2 Participants
Major Adverse Cardiac Events (MACE)
MACE within 12 months of procedure
0 Participants
2 Participants
Major Adverse Cardiac Events (MACE)
MACE within 24 months of procedure
0 Participants
2 Participants

SECONDARY outcome

Timeframe: 30 days post procedure

Population: Peri-procedural events within 30 days post procedure were summarized as a percentage based on the number of subjects at baseline for each group (RDN+AF group= 39, AF group=22).

Peri-procedural events within 30 days post procedure were summarized as a percentage based on the number of subjects at baseline for each group (RDN+AF group= 39, AF group=22)

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=39 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=22 Participants
Participants treated with cardiac ablation alone.
Percentage of Participants Who Experience Peri-procedural Events
Bleeding
0 Participants
1 Participants
Percentage of Participants Who Experience Peri-procedural Events
VASC Pseudoaneurysm
1 Participants
0 Participants
Percentage of Participants Who Experience Peri-procedural Events
Air Embolus
3 Participants
0 Participants
Percentage of Participants Who Experience Peri-procedural Events
Paroxysmal Atrial Fibrillation
1 Participants
0 Participants
Percentage of Participants Who Experience Peri-procedural Events
Vasospasm
1 Participants
0 Participants
Percentage of Participants Who Experience Peri-procedural Events
Cardiac Arrest
0 Participants
1 Participants
Percentage of Participants Who Experience Peri-procedural Events
Pericardial Effusion
0 Participants
1 Participants
Percentage of Participants Who Experience Peri-procedural Events
Paroxysmal Atrial Tachycardia
1 Participants
0 Participants
Percentage of Participants Who Experience Peri-procedural Events
Hematoma
0 Participants
1 Participants
Percentage of Participants Who Experience Peri-procedural Events
Pericardial Tamponade
0 Participants
1 Participants

SECONDARY outcome

Timeframe: 6 months and 12 months post procedure

Population: Renovascular safety (new renal artery stenosis or aneurysm) was summarized as a percentage based on the number of subjects at baseline for each group (RDN+AF group= 39, AF group=22).

Renovascular safety (new renal artery stenosis or aneurysm) was summarized as a percentage based on the number of subjects at baseline for each group (RDN+AF group= 39, AF group=22).

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=39 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=22 Participants
Participants treated with cardiac ablation alone.
Assessment of Renovascular Safety as Measured by New Renal Artery Stenosis or Aneurysm at the Site of Ablation
VASC Pseudoaneurysm at 6 months
1 Participants
0 Participants
Assessment of Renovascular Safety as Measured by New Renal Artery Stenosis or Aneurysm at the Site of Ablation
VASC Pseudoaneurysm at 12 months
2 Participants
0 Participants
Assessment of Renovascular Safety as Measured by New Renal Artery Stenosis or Aneurysm at the Site of Ablation
Renal Artery Stenosis at 6 months
0 Participants
0 Participants
Assessment of Renovascular Safety as Measured by New Renal Artery Stenosis or Aneurysm at the Site of Ablation
Renal Artery Stenosis at 12 months
1 Participants
0 Participants

SECONDARY outcome

Timeframe: Baseline and 6 months

Population: eGFR change from baseline was summarized based on subjects with available data at both time points (RDN+AF group = 32)

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=32 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
Participants treated with cardiac ablation alone.
Renal Function Change Based on Estimated Glomerular Filtration Rate (eGFR) (Renal Denervation Group Only) at 6 Months
2.2 mL/min per 1.73m^2
Standard Deviation 11.0

SECONDARY outcome

Timeframe: Baseline and 12 months

Population: eGFR change from baseline was summarized based on subjects with available data at both time points (RDN+AF group = 33)

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=33 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
Participants treated with cardiac ablation alone.
Renal Function Change Based on eGFR (Renal Denervation Group Only) at 12 Months
-0.4 mL/min per 1.73m^2
Standard Deviation 11.9

SECONDARY outcome

Timeframe: 3 months, 6 months, 12 months, 24 months

Population: For each group, the outcome measure was analyzed in participants who underwent the procedure (RDN+AF group= 39, AF group=20)

Recurrence of AF was summarized as a percentage based on the number of subjects who underwent the procedure (RDN+AF group= 39, AF group=20)

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=39 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=20 Participants
Participants treated with cardiac ablation alone.
Recurrence of Atrial Fibrillation (AF) Based on Electrocardiographic Data up to 2 Years Following the Initial Cardiac Ablation Procedure.
Atrial Fibrillation recurrence within 12 months
14 Participants
8 Participants
Recurrence of Atrial Fibrillation (AF) Based on Electrocardiographic Data up to 2 Years Following the Initial Cardiac Ablation Procedure.
Atrial Fibrillation recurrence within 24 months
19 Participants
9 Participants
Recurrence of Atrial Fibrillation (AF) Based on Electrocardiographic Data up to 2 Years Following the Initial Cardiac Ablation Procedure.
Atrial Fibrillation recurrence within 3 months
4 Participants
4 Participants
Recurrence of Atrial Fibrillation (AF) Based on Electrocardiographic Data up to 2 Years Following the Initial Cardiac Ablation Procedure.
Atrial Fibrillation recurrence within 6 months
9 Participants
5 Participants

SECONDARY outcome

Timeframe: 6 months post procedure

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=35 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=16 Participants
Participants treated with cardiac ablation alone.
Percentage of Participants Achieving Office Systolic Blood Pressure < 140 mmHg
4 Participants
1 Participants

SECONDARY outcome

Timeframe: Baseline and 12 months post procedure

Population: Change in Ambulatory Blood Pressure was summarized based on subjects with available data at both time points (RDN+AF group= 22, AF group=14)

Change in Ambulatory Blood Pressure was summarized based on subjects with available data at both time points (RDN+AF group= 22, AF group=14)

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=22 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=14 Participants
Participants treated with cardiac ablation alone.
Change in Ambulatory Blood Pressure at 12 Months
24-Hour Ambulatory Systolic Blood Pressure (ASBP)
-5.9 mmHg
Standard Deviation 15.2
-3.1 mmHg
Standard Deviation 19.2
Change in Ambulatory Blood Pressure at 12 Months
24-Hour Ambulatory Diastolic Blood Pressure (ADBP)
-5.8 mmHg
Standard Deviation 7.4
-8.4 mmHg
Standard Deviation 9.4

SECONDARY outcome

Timeframe: Baseline and 24 months post procedure

Population: Change in Ambulatory Blood Pressure was summarized based on subjects with available data at both time points (RDN+AF group= 17, AF group=12)

Change in Ambulatory Blood Pressure was summarized based on subjects with available data at both time points (RDN+AF group= 17, AF group=12)

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=17 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=12 Participants
Participants treated with cardiac ablation alone.
Change in Ambulatory Blood Pressure at 24 Months
24-Hour Ambulatory Systolic Blood Pressure (ASBP)
-5.7 mmHg
Standard Deviation 14.8
-8.6 mmHg
Standard Deviation 12.4
Change in Ambulatory Blood Pressure at 24 Months
24-Hour Ambulatory Diastolic Blood Pressure (ADBP)
-6.9 mmHg
Standard Deviation 6.1
-10.3 mmHg
Standard Deviation 8.5

SECONDARY outcome

Timeframe: Baseline and 12 months post procedure

Population: Change in Office Blood Pressure was summarized based on subjects with available data at both time points (RDN+AF group= 33, AF group=15)

Change in Office Blood Pressure was summarized based on subjects with available data at both time points (RDN+AF group= 33, AF group=15)

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=33 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=15 Participants
Participants treated with cardiac ablation alone.
Change in Office Blood Pressure at 12 Months
Change in Office Systolic Blood Pressure (OSBP)
2.6 mmHg
Standard Deviation 24.4
2.0 mmHg
Standard Deviation 30.0
Change in Office Blood Pressure at 12 Months
Change in Office Diastolic Blood Pressure (ODBP)
-0.4 mmHg
Standard Deviation 11.8
-5.4 mmHg
Standard Deviation 15.8

SECONDARY outcome

Timeframe: Baseline and 24 months post procedure

Population: Change in Office Blood Pressure was summarized based on subjects with available data at both time points (RDN+AF group= 29, AF group=16).

Change in Office Blood Pressure was summarized based on subjects with available data at both time points (RDN+AF group= 29, AF group=16).

Outcome measures

Outcome measures
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=29 Participants
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=16 Participants
Participants treated with cardiac ablation alone.
Change in Office Blood Pressure at 24 Months
Change in Office Systolic Blood Pressure (OSBP)
0.6 mmHg
Standard Deviation 22.3
7.4 mmHg
Standard Deviation 22.9
Change in Office Blood Pressure at 24 Months
Change in Office Diastolic Blood Pressure (ODBP)
0.5 mmHg
Standard Deviation 11.0
-3.0 mmHg
Standard Deviation 15.5

Adverse Events

Renal Artery Ablation + Cardiac Ablation (RDN+AF)

Serious events: 4 serious events
Other events: 4 other events
Deaths: 0 deaths

Cardiac Ablation (AF)

Serious events: 3 serious events
Other events: 2 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=39 participants at risk
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=22 participants at risk
Participants treated with cardiac ablation alone.
Cardiac disorders
Paroxysmal Atrial Tachycardia
2.6%
1/39 • Number of events 1 • 24 months
0.00%
0/22 • 24 months
Cardiac disorders
Paroxysmal Atrial Fibrillation
2.6%
1/39 • Number of events 1 • 24 months
0.00%
0/22 • 24 months
Cardiac disorders
Cardiac Arrest
0.00%
0/39 • 24 months
4.5%
1/22 • Number of events 1 • 24 months
Cardiac disorders
Pericardial Effusion
0.00%
0/39 • 24 months
4.5%
1/22 • Number of events 1 • 24 months
Cardiac disorders
Pericardial Tamponade
0.00%
0/39 • 24 months
4.5%
1/22 • Number of events 1 • 24 months
Endocrine disorders
Hyperthyroidism
2.6%
1/39 • Number of events 1 • 24 months
0.00%
0/22 • 24 months
Vascular disorders
VASC Pseudoaneurysm
2.6%
1/39 • Number of events 1 • 24 months
0.00%
0/22 • 24 months
Vascular disorders
Renal Artery Stenosis
2.6%
1/39 • Number of events 1 • 24 months
0.00%
0/22 • 24 months

Other adverse events

Other adverse events
Measure
Renal Artery Ablation + Cardiac Ablation (RDN+AF)
n=39 participants at risk
Participants treated with renal artery ablation using the EnligHTN System and cardiac ablation.
Cardiac Ablation (AF)
n=22 participants at risk
Participants treated with cardiac ablation alone.
Endocrine disorders
Hyperthyroidism
2.6%
1/39 • Number of events 1 • 24 months
0.00%
0/22 • 24 months
Vascular disorders
Hematoma
0.00%
0/39 • 24 months
4.5%
1/22 • Number of events 1 • 24 months
Vascular disorders
Bleeding
0.00%
0/39 • 24 months
4.5%
1/22 • Number of events 1 • 24 months
Injury, poisoning and procedural complications
Air Embolus
7.7%
3/39 • Number of events 3 • 24 months
0.00%
0/22 • 24 months
Vascular disorders
Vasospasm
2.6%
1/39 • Number of events 1 • 24 months
0.00%
0/22 • 24 months
Vascular disorders
VASC Pseudoaneurysm
2.6%
1/39 • Number of events 1 • 24 months
0.00%
0/22 • 24 months

Additional Information

Rebecca Maslow, MA, Clinical Project Manager

Abbott

Phone: +1 651-756-5564

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place

Restriction type: OTHER