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SPYRAL DYSTAL Renal Denervation Global Clinical Study

Global Clinical Study of Renal Denervation in the Distal Main and First Order Branch Renal Arteries Using the Symplicity Spyral™ Multi-electrode Renal Denervation System (SPYRAL DYSTAL)

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04311086
Enrollment
128
Registered
2020-03-17
Start date
2020-06-12
Completion date
2022-12-22
Last updated
2024-04-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cardiovascular Diseases, Hypertension, Vascular Diseases

Keywords

Uncontrolled hypertension, Renal denervation

Brief summary

The objective of this single arm interventional study is to determine if renal denervation performed in the distal main and first order branch renal arteries is as effective in reducing blood pressure as the procedural approach used in the SPYRAL HTN-OFF MED clinical study.

Interventions

Device: Symplicity Spyral™ multi-electrode renal denervation system. After a renal angiography according to standard procedures, subjects are treated with the renal denervation procedure.

Sponsors

Medtronic Vascular
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
20 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

\- Individual has office systolic blood pressure (SBP) ≥ 150 mmHg and \<180 mmHg and a diastolic blood pressure (DBP) ≥ 90 mmHg after being off medications. * Individual has 24-hour Ambulatory Blood Pressure Monitoring (ABPM) average SBP ≥ 140 mmHg and \< 170 mmHg. * Individual is willing to discontinue current antihypertensive medications

Exclusion criteria

* Individual has estimated glomerular filtration rate (eGFR) of \<45. * Individual has type 1 diabetes mellitus or poorly-controlled type 2 diabetes mellitus. * Individual has one or more episodes of orthostatic hypotension. * Individual requires chronic oxygen support or mechanical ventilation other than nocturnal respiratory support for sleep apnea. * Individual has primary pulmonary hypertension. * Individual is pregnant, nursing or planning to become pregnant. * Individual has frequent intermittent or chronic pain that results in treatment with nonsteroidal anti-inflammatory drugs (NSAIDs) for two or more days per week over the month prior to enrollment. * Individual has stable or unstable angina within 3 months of enrollment, myocardial infarction within 3 months of enrollment; heart failure, cerebrovascular accident or transient ischemic attack, or atrial fibrillation at any time. * Individual works night shifts.

Design outcomes

Primary

MeasureTime frame
Change in Systolic Blood Pressure (SBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)From Baseline (SV2) to 12 months post-procedure

Secondary

MeasureTime frameDescription
Change in Diastolic Blood Pressure (DBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)From Baseline (SV2) to 3 months post-procedure
Incidence of Achieving Target Office Systolic Blood Pressure (SBP)3 months post-procedureTarget blood pressure defined as \<140 mmHg office Systolic Blood Pressure (SBP)
Acute and Chronic Safety by Evaluating Incidence of Major Adverse EventsFrom Baseline (SV2) to 12 months post-procedureIncidence of the following events: * All-cause mortality * End-stage renal disease (ESRD) * Significant embolic event resulting in end-organ damage * Renal artery perforation requiring intervention * Renal artery dissection requiring intervention * Vascular complications * Hospitalization for hypertensive crisis not related to confirmed non-adherence with medications or the protocol * New renal artery stenosis \>70%, confirmed by angiography and as determined by the angiographic core lab at 6 months follow up
Incidence of Myocardial InfarctionFrom baseline (SV2) to 12 months post-procedureDefined as the concurrent documentation of two of the three elements listed below in the appropriate clinical circumstance: 1. Chest pain or ischemic equivalent 2. New pathologic q waves in at least 2 contiguous ECG leads 3. Cardiac biomarker elevation by any of the definitions below: Appropriate cardiac enzyme data (respecting top-down hierarchy): 1. CK greater than or equal to 2\* URL confirmed by: * CKMB \> l\*URL or * in the absence of CKMB: Troponin \> l\*URL or 2. in the absence of CK: * CKMB \> 3\*URL * In the absence of CK and CKMB: Troponin \> 3\*URL * In the absence of CK, CKMB and Troponin, clinical decision based upon clinical scenario
Incidence of StrokeFrom baseline (SV2) to 12 months post-procedure
Incidence of Renal Artery Re-interventionFrom baseline (SV2) to 12 months post-procedureInterventional procedure performed on the renal artery following completion of the renal denervation procedure and removal of the guide catheter.
Incidence of Major Bleeding According to TIMI DefinitionFrom baseline (SV2) to 12 months post-procedureIntracranial hemorrhage; ≥5g/dl decrease in hemoglobin concentration, a ≥15% absolute decrease in hematocrit, or death due to bleeding within seven days of the procedure)
Incidence of Increase in Serum Creatinine >50%From baseline (SV2) to 12 months post-procedure
Change in Systolic Blood Pressure (SBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)From Baseline (SV2) to 3 months post-procedure
Change in Office Systolic Blood Pressure (SBP)From Baseline (SV2) to 3 months post-procedure
Change in Office Diastolic Blood Pressure (DBP)From Baseline (SV2) to 3 month post-procedure

Other

MeasureTime frameDescription
Office Systolic Blood Pressure (SBP) ReductionFrom Baseline (SV2) to 3 months post-procedureComparison of Office Systolic Blood Pressure (SBP) reduction between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.
Office Diastolic Blood Pressure (DBP) ReductionFrom Baseline (SV2) to 3 months post-procedureComparison of Office Diastolic Blood Pressure (DBP) reduction between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.
Procedural Characteristics: Procedure Time (Minutes)ProcedureComparison of procedural characteristics: total procedure duration (minutes) between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.
Procedural Characteristics: Denervation Time (Minutes)ProcedureComparison of the procedural characteristics: total denervation time between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.
Procedural Characteristics: Amount of Contrast Used (cc)ProcedureComparison of the procedural characteristics: amount of contrast used (cubic centimeter(cc)) between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.
Reduction in Systolic Blood Pressure (SBP) Over 24 Hours of ABPM as Measured With 24- Ambulatory Blood Pressure Monitor (ABPM) at 3 Months Post-procedure From Baseline3 months post-procedureComparison of systolic blood pressure reduction over 24 hours of ABPM between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.
Reduction in Diastolic Blood Pressure (DBP) Over 24 Hours as Measured With 24-Ambulatory Blood Pressure Monitor (ABPM) at 3 Months Post-procedure From Baseline3 Months post-procedureComparison of diastolic blood pressure reduction over 24 hours of ABPM between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Countries

Germany, Greece, United Kingdom, United States

Participant flow

Pre-assignment details

Comparison of this study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure have been made for several end points and noted in the descriptions.

Participants by arm

ArmCount
Renal Denervation
Renal angiography and Renal Denervation (Symplicity Spyral™ multi-electrode renal denervation system) Renal Denervation (Symplicity Spyral™): Device: Symplicity Spyral™ multi-electrode renal denervation system. After a renal angiography according to standard procedures, subjects are treated with the renal denervation procedure.
56
Total56

Baseline characteristics

CharacteristicRenal Denervation
Age, Continuous56.3 Years
STANDARD_DEVIATION 9.1
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
3 Participants
Race (NIH/OMB)
More than one race
1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
27 Participants
Race (NIH/OMB)
White
23 Participants
Region of Enrollment
Germany
14 participants
Region of Enrollment
Greece
7 participants
Region of Enrollment
Italy
6 participants
Region of Enrollment
United Kingdom
5 participants
Region of Enrollment
United States
24 participants
Sex: Female, Male
Female
17 Participants
Sex: Female, Male
Male
39 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 56
other
Total, other adverse events
38 / 56
serious
Total, serious adverse events
7 / 56

Outcome results

Primary

Change in Systolic Blood Pressure (SBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)

Time frame: From Baseline (SV2) to 12 months post-procedure

Population: Subjects with evaluable data

ArmMeasureValue (MEAN)Dispersion
Renal DenervationChange in Systolic Blood Pressure (SBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)-16.6 mmHgStandard Deviation 10.6
Secondary

Acute and Chronic Safety by Evaluating Incidence of Major Adverse Events

Incidence of the following events: * All-cause mortality * End-stage renal disease (ESRD) * Significant embolic event resulting in end-organ damage * Renal artery perforation requiring intervention * Renal artery dissection requiring intervention * Vascular complications * Hospitalization for hypertensive crisis not related to confirmed non-adherence with medications or the protocol * New renal artery stenosis \>70%, confirmed by angiography and as determined by the angiographic core lab at 6 months follow up

Time frame: From Baseline (SV2) to 12 months post-procedure

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Renal DenervationAcute and Chronic Safety by Evaluating Incidence of Major Adverse EventsAll Cause Mortality0 Participants
Renal DenervationAcute and Chronic Safety by Evaluating Incidence of Major Adverse EventsEnd-stage renal disease (ESRD)0 Participants
Renal DenervationAcute and Chronic Safety by Evaluating Incidence of Major Adverse EventsSignificant embolic event resulting in end-organ damage2 Participants
Renal DenervationAcute and Chronic Safety by Evaluating Incidence of Major Adverse EventsSignificant Embolic Event, Kidney2 Participants
Renal DenervationAcute and Chronic Safety by Evaluating Incidence of Major Adverse EventsRenal artery perforation requiring intervention0 Participants
Renal DenervationAcute and Chronic Safety by Evaluating Incidence of Major Adverse EventsRenal artery dissection requiring intervention0 Participants
Renal DenervationAcute and Chronic Safety by Evaluating Incidence of Major Adverse EventsVascular complications0 Participants
Renal DenervationAcute and Chronic Safety by Evaluating Incidence of Major Adverse EventsHospitalization for hypertensive crisis0 Participants
Renal DenervationAcute and Chronic Safety by Evaluating Incidence of Major Adverse EventsNew renal artery stenosis >70%0 Participants
Secondary

Change in Diastolic Blood Pressure (DBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)

Time frame: From Baseline (SV2) to 12 months post-procedure

Population: Subjects with evaluable data

ArmMeasureValue (MEAN)Dispersion
Renal DenervationChange in Diastolic Blood Pressure (DBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)-11.2 mmHgStandard Deviation 8.2
Secondary

Change in Diastolic Blood Pressure (DBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)

Time frame: From Baseline (SV2) to 3 months post-procedure

Population: Subjects with evaluable data

ArmMeasureValue (MEAN)Dispersion
Renal DenervationChange in Diastolic Blood Pressure (DBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)-1.1 mmHgStandard Deviation 7.5
Secondary

Change in Office Diastolic Blood Pressure (DBP)

Time frame: From Baseline (SV2) to 12 months post-procedure

ArmMeasureValue (MEAN)Dispersion
Renal DenervationChange in Office Diastolic Blood Pressure (DBP)-9.8 mmHgStandard Deviation 10.8
Secondary

Change in Office Diastolic Blood Pressure (DBP)

Time frame: From Baseline (SV2) to 3 month post-procedure

Population: Subjects with evaluable data

ArmMeasureValue (MEAN)Dispersion
Renal DenervationChange in Office Diastolic Blood Pressure (DBP)-4.1 mmHgStandard Deviation 8.5
Secondary

Change in Office Systolic Blood Pressure (SBP)

Time frame: From Baseline (SV2) to 12 months post-procedure

ArmMeasureValue (MEAN)Dispersion
Renal DenervationChange in Office Systolic Blood Pressure (SBP)-20.3 mmHgStandard Deviation 16.3
Secondary

Change in Office Systolic Blood Pressure (SBP)

Time frame: From Baseline (SV2) to 3 months post-procedure

Population: Subjects with evaluable data

ArmMeasureValue (MEAN)Dispersion
Renal DenervationChange in Office Systolic Blood Pressure (SBP)-9.0 mmHgStandard Deviation 13.9
Secondary

Change in Systolic Blood Pressure (SBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)

Time frame: From Baseline (SV2) to 3 months post-procedure

Population: Subjects with evaluable data

ArmMeasureValue (MEAN)Dispersion
Renal DenervationChange in Systolic Blood Pressure (SBP) as Measured by 24-hour Ambulatory Blood Pressure Monitoring (ABPM)-1.4 mmHgStandard Deviation 10
Secondary

Incidence of Achieving Target Office Systolic Blood Pressure (SBP)

Target blood pressure defined as \<140 mmHg office Systolic Blood Pressure (SBP)

Time frame: 3 months post-procedure

Population: Subjects with evaluable data

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Renal DenervationIncidence of Achieving Target Office Systolic Blood Pressure (SBP)8 Participants
Secondary

Incidence of Achieving Target Office Systolic Blood Pressure (SBP)

Target blood pressure defined as \<140 mmHg office Systolic Blood Pressure (SBP)

Time frame: 12 months post-procedure

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Renal DenervationIncidence of Achieving Target Office Systolic Blood Pressure (SBP)27 Participants
Secondary

Incidence of Increase in Serum Creatinine >50%

Time frame: From baseline (SV2) to 12 months post-procedure

Population: Subjects with evaluable data

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Renal DenervationIncidence of Increase in Serum Creatinine >50%0 Participants
Secondary

Incidence of Major Bleeding According to TIMI Definition

Intracranial hemorrhage; ≥5g/dl decrease in hemoglobin concentration, a ≥15% absolute decrease in hematocrit, or death due to bleeding within seven days of the procedure)

Time frame: From baseline (SV2) to 12 months post-procedure

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Renal DenervationIncidence of Major Bleeding According to TIMI Definition0 Participants
Secondary

Incidence of Myocardial Infarction

Defined as the concurrent documentation of two of the three elements listed below in the appropriate clinical circumstance: 1. Chest pain or ischemic equivalent 2. New pathologic q waves in at least 2 contiguous ECG leads 3. Cardiac biomarker elevation by any of the definitions below: Appropriate cardiac enzyme data (respecting top-down hierarchy): 1. CK greater than or equal to 2\* URL confirmed by: * CKMB \> l\*URL or * in the absence of CKMB: Troponin \> l\*URL or 2. in the absence of CK: * CKMB \> 3\*URL * In the absence of CK and CKMB: Troponin \> 3\*URL * In the absence of CK, CKMB and Troponin, clinical decision based upon clinical scenario

Time frame: From baseline (SV2) to 12 months post-procedure

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Renal DenervationIncidence of Myocardial Infarction0 Participants
Secondary

Incidence of Renal Artery Re-intervention

Interventional procedure performed on the renal artery following completion of the renal denervation procedure and removal of the guide catheter.

Time frame: From baseline (SV2) to 12 months post-procedure

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Renal DenervationIncidence of Renal Artery Re-intervention0 Participants
Secondary

Incidence of Stroke

Time frame: From baseline (SV2) to 12 months post-procedure

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Renal DenervationIncidence of Stroke0 Participants
Post Hoc

Office Diastolic Blood Pressure (DBP) Reduction

Comparison of Office Diastolic Blood Pressure (DBP) reduction between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: From Baseline (SV2) to 12 months post-procedure

Population: 56 Subjects from the SPYRAL DYSTAL study and 171 Intent-to-Treat Subjects from the SPYRAL HTN-OFF MED study (NCT02439749). Within each of the 5 strata ANCOVA model with Office DBP change as dependent variable. Treatment and baseline Office DBP as independent variables. In subjects with evaluable data.

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationOffice Diastolic Blood Pressure (DBP) ReductionSPYRAL DYSTAL-9.8 mmHgStandard Deviation 10.8
Renal DenervationOffice Diastolic Blood Pressure (DBP) ReductionSPYRAL HTN-OFF MED-10.7 mmHgStandard Deviation 8.8
Comparison: Comparison to the SPYRAL HTN-OFF MED study (NCT02439749) using a propensity score stratification (sub classification) adjustment.p-value: >0.05ANCOVA
Other Pre-specified

Office Diastolic Blood Pressure (DBP) Reduction

Comparison of Office Diastolic Blood Pressure (DBP) reduction between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: From Baseline (SV2) to 3 months post-procedure

Population: 55 Subjects from the SPYRAL DYSTAL study and 170 Intent-to-Treat Subjects from the SPYRAL HTN-OFF MED study (NCT02439749). Within each of the 5 strata ANCOVA model with Office DBP change as dependent variable. Treatment and baseline Office DBP as independent variables. In subjects with evaluable data.

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationOffice Diastolic Blood Pressure (DBP) ReductionSPYRAL DYSTAL-4.1 mmHgStandard Deviation 8.5
Renal DenervationOffice Diastolic Blood Pressure (DBP) ReductionSPYRAL HTN-OFF MED-5.0 mmHgStandard Deviation 8.3
Comparison: Comparison to the SPYRAL HTN-OFF MED study (NCT02439749) using a propensity score stratification (sub classification) adjustment.p-value: >0.05ANCOVA
Other Pre-specified

Office Systolic Blood Pressure (SBP) Reduction

Comparison of Office Systolic Blood Pressure (SBP) reduction between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: From Baseline (SV2) to 3 months post-procedure

Population: 55 Subjects from the SPYRAL DYSTAL study and 170 Intent-to-Treat Subjects from the SPYRAL HTN-OFF MED study (NCT02439749). Within each of the 5 strata ANCOVA model with Office SBP change as dependent variable. Treatment and baseline Office SBP as independent variables. In subjects with evaluable data.

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationOffice Systolic Blood Pressure (SBP) ReductionSPYRAL DYSTAL-9.0 mmHgStandard Deviation 13.9
Renal DenervationOffice Systolic Blood Pressure (SBP) ReductionSPYRAL HTN-OFF MED-9.4 mmHgStandard Deviation 14.8
Comparison: Comparison to the SPYRAL HTN-OFF MED study (NCT02439749) using a propensity score stratification (sub classification) adjustmentp-value: >0.05ANCOVA
Post Hoc

Office Systolic Blood Pressure (SBP) Reduction

Comparison of Office Systolic Blood Pressure (SBP) reduction between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: From Baseline (SV2) to 12 months post-procedure

Population: 56 Subjects from the SPYRAL DYSTAL study and 171 Intent-to-Treat Subjects from the SPYRAL HTN-OFF MED study (NCT02439749). Within each of the 5 strata ANCOVA model with Office SBP change as dependent variable. Treatment and baseline Office SBP as independent variables. In subjects with evaluable data.

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationOffice Systolic Blood Pressure (SBP) ReductionSPYRAL DYSTAL-20.3 mmHgStandard Deviation 16.3
Renal DenervationOffice Systolic Blood Pressure (SBP) ReductionSPYRAL HTN-OFF MED-21.3 mmHgStandard Deviation 14.2
Comparison: Comparison to the SPYRAL HTN-OFF MED study (NCT02439749) using a propensity score stratification (sub classification) adjustment.p-value: >0.05ANCOVA
Other Pre-specified

Procedural Characteristics: Amount of Contrast Used (cc)

Comparison of the procedural characteristics: amount of contrast used (cubic centimeter(cc)) between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: Procedure

Population: 56 Subjects from the SPYRAL DYSTAL study and 178 Subjects from the SPYRAL HTN-OFF MED study (NCT02439749) with evaluable data.

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationProcedural Characteristics: Amount of Contrast Used (cc)SPYRAL DYSTAL172.8 (cubic centimeter(cc))Standard Deviation 76.6
Renal DenervationProcedural Characteristics: Amount of Contrast Used (cc)SPYRAL HTN-OFF MED207.8 (cubic centimeter(cc))Standard Deviation 96.1
Other Pre-specified

Procedural Characteristics: Denervation Time (Minutes)

Comparison of the procedural characteristics: total denervation time between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: Procedure

Population: 56 Subjects from the SPYRAL DYSTAL study and 182 Subjects from the SPYRAL HTN-OFF MED study (NCT02439749).

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationProcedural Characteristics: Denervation Time (Minutes)SPYRAL DYSTAL35.9 MinutesStandard Deviation 13.8
Renal DenervationProcedural Characteristics: Denervation Time (Minutes)SPYRAL HTN-OFF MED59.7 MinutesStandard Deviation 24.3
Other Pre-specified

Procedural Characteristics: Procedure Time (Minutes)

Comparison of procedural characteristics: total procedure duration (minutes) between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: Procedure

Population: 56 Subjects from the SPYRAL DYSTAL study and 182 Subjects from the SPYRAL HTN-OFF MED study (NCT02439749).

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationProcedural Characteristics: Procedure Time (Minutes)SPYRAL DYSTAL67.3 MinutesStandard Deviation 20.6
Renal DenervationProcedural Characteristics: Procedure Time (Minutes)SPYRAL HTN-OFF MED99.3 MinutesStandard Deviation 36.2
Post Hoc

Reduction in Diastolic Blood Pressure (DBP) Over 24 Hours as Measured With 24-Ambulatory Blood Pressure Monitor (ABPM) at 12 Months Post-procedure From Baseline

Comparison of diastolic blood pressure reduction over 24 hours of ABPM between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: 12 months post-procedure

Population: 46 Subjects from the SPYRAL DYSTAL study and 146 Intent-to-Treat Subjects from the SPYRAL HTN-OFF MED study (NCT02439749). Within each of the 5 strata ANCOVA model with 24-hr DBP change as dependent variable. Treatment and baseline 24-hr DBP as independent variables. In subjects with evaluable data.

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationReduction in Diastolic Blood Pressure (DBP) Over 24 Hours as Measured With 24-Ambulatory Blood Pressure Monitor (ABPM) at 12 Months Post-procedure From BaselineSPYRAL DYSTAL-11.2 mmHgStandard Deviation 8.2
Renal DenervationReduction in Diastolic Blood Pressure (DBP) Over 24 Hours as Measured With 24-Ambulatory Blood Pressure Monitor (ABPM) at 12 Months Post-procedure From BaselineSPYRAL HTN-OFF MED-10.2 mmHgStandard Deviation 8.2
p-value: <0.05ANCOVA
Other Pre-specified

Reduction in Diastolic Blood Pressure (DBP) Over 24 Hours as Measured With 24-Ambulatory Blood Pressure Monitor (ABPM) at 3 Months Post-procedure From Baseline

Comparison of diastolic blood pressure reduction over 24 hours of ABPM between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: 3 Months post-procedure

Population: 53 Subjects from the SPYRAL DYSTAL study and 153 Intent-to-Treat Subjects from the SPYRAL HTN-OFF MED study (NCT02439749). Within each of the 5 strata ANCOVA model with 24-hr DBP change as dependent variable. Treatment and baseline 24-hr DBP as independent variables. In subjects with evaluable data.

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationReduction in Diastolic Blood Pressure (DBP) Over 24 Hours as Measured With 24-Ambulatory Blood Pressure Monitor (ABPM) at 3 Months Post-procedure From BaselineSPYRAL DYSTAL-1.1 mmHgStandard Deviation 7.5
Renal DenervationReduction in Diastolic Blood Pressure (DBP) Over 24 Hours as Measured With 24-Ambulatory Blood Pressure Monitor (ABPM) at 3 Months Post-procedure From BaselineSPYRAL HTN-OFF MED-3.5 mmHgStandard Deviation 6.7
Comparison: Comparison to the SPYRAL HTN-OFF MED study (NCT02439749) using a propensity score stratification (sub classification) adjustment.p-value: >0.05ANCOVA
Post Hoc

Reduction in Systolic Blood Pressure (SBP) Over 24 Hours of ABPM as Measured With 24-Ambulatory Blood Pressure Monitor (ABPM) at 12 Months Post-procedure From Baseline

Comparison of systolic blood pressure reduction over 24 hours of ABPM between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: 12 months post-procedure

Population: 46 Subjects from the SPYRAL DYSTAL study and 146 Intent-to-Treat Subjects from the SPYRAL HTN-OFF MED study (NCT02439749). Within each of the 5 strata ANCOVA model with 24-hr SBP change as dependent variable. Treatment and baseline 24-hr SBP as independent variables. In subjects with evaluable data.

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationReduction in Systolic Blood Pressure (SBP) Over 24 Hours of ABPM as Measured With 24-Ambulatory Blood Pressure Monitor (ABPM) at 12 Months Post-procedure From BaselineSPYRAL DYSTAL-16.6 mmHgStandard Deviation 10.6
Renal DenervationReduction in Systolic Blood Pressure (SBP) Over 24 Hours of ABPM as Measured With 24-Ambulatory Blood Pressure Monitor (ABPM) at 12 Months Post-procedure From BaselineSPYRAL HTN-OFF MED-14.3 mmHgStandard Deviation 11.9
Comparison: Comparison to the SPYRAL HTN-OFF MED study (NCT02439749) using a propensity score stratification (sub classification) adjustment.p-value: <0.05ANCOVA
Other Pre-specified

Reduction in Systolic Blood Pressure (SBP) Over 24 Hours of ABPM as Measured With 24- Ambulatory Blood Pressure Monitor (ABPM) at 3 Months Post-procedure From Baseline

Comparison of systolic blood pressure reduction over 24 hours of ABPM between the SPYRAL DYSTAL study and the SPYRAL HTN-OFF MED study (NCT02439749) who, after a renal angiography according to standard procedures, are treated with the renal denervation procedure.

Time frame: 3 months post-procedure

Population: 53 Subjects from the SPYRAL DYSTAL study and 153 Intent-to-Treat Subjects from the SPYRAL HTN-OFF MED study (NCT02439749). Within each of the 5 strata ANCOVA model with 24-hr SBP change as dependent variable. Treatment and baseline 24-hr SBP as independent variables. In subjects with evaluable data.

ArmMeasureGroupValue (MEAN)Dispersion
Renal DenervationReduction in Systolic Blood Pressure (SBP) Over 24 Hours of ABPM as Measured With 24- Ambulatory Blood Pressure Monitor (ABPM) at 3 Months Post-procedure From BaselineSPYRAL DYSTAL-1.4 mmHgStandard Deviation 10
Renal DenervationReduction in Systolic Blood Pressure (SBP) Over 24 Hours of ABPM as Measured With 24- Ambulatory Blood Pressure Monitor (ABPM) at 3 Months Post-procedure From BaselineSPYRAL HTN-OFF MED-4.5 mmHgStandard Deviation 10.8
Comparison: Comparison to the SPYRAL HTN-OFF MED study (NCT02439749) using a propensity score stratification (sub classification) adjustment.p-value: >0.05ANCOVA

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026