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Effective Study of ARNI on Ventricular Arrhythmia in HFrEF Patients With ICD or CRT-D (RHYTHM)

A Multicenter, Interventional, Open-label and Single-arm Study to Investigate the Effect of ARNI on Ventricular Arrhythmia in HFrEF Patients With ICD or CRT-D

Status
Terminated
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04491136
Acronym
RHYTHM
Enrollment
201
Registered
2020-07-29
Start date
2020-11-11
Completion date
2023-06-08
Last updated
2025-05-16

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

Conditions

Heart Failure

Keywords

LCZ696, sacubitril/valsartan, Heart Failure, Heart failure with reduced ejection fraction, HFrEF, Ventricular arrhythmias, Implanted Device, Healthcare resource utilization

Brief summary

The purpose of this study was to generate effectiveness data of Angiotensin receptor neprilysin inhibitor (ARNI), in the Chinese Heart failure with reduced ejection fraction (HFrEF) patients with implantable cardioverted defibrillator (ICD) or Cardiac resynchronization therapy-defibrillator (CRT-D).

Detailed description

The rationale of this study was to compare the effect of angiotensin-converting enzyme inhibitor (ACEI) / Angiotensin receptor blockers (ARB) with the effect of ARNI on ventricular arrhythmia (VA) events for HFrEF patients with ICD or CRT-D, thus a multicenter, interventional, open-label, and prospective single-arm study was considered. ACEI/ARB was given to the patient for 6 months. After 6 months, patients using ACEI needed to undergo a 36-hr washout period (36-hr washout period was not needed for patients using ARB at month 6). Patients then received ARNI (sponsored by Novartis only for this study).

Interventions

Oral ACE/ARB drug according to the investigator's discretion for the first 6 months in this study

DRUGARNI

Oral sacubitril/valsartan at the dosage of investigators discretion, whit a target dose of 200mg bid for the next 6 months of this study

Sponsors

Novartis Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

Key Inclusion criteria: 1. Male or female patients ≥18 and ≤80 years of age 2. Implanted with an ICD or CRT-D within 2 weeks 3. NYHA functional class II - IV 4. LVEF ≤40% (measured by echocardiography) 5. Signed informed consent must be obtained prior to participation in the study. Key

Exclusion criteria

1. History of hypersensitivity to any of the study treatments or its excipients or to drugs of similar chemical classes. 2. Patient received target dose (≥200 mg/d) of ARNI for 2 weeks continuously within the 6-week period prior to study enrollment. 3. Participation in other clinical studies 3 months prior to participating study. 4. Advanced cancer or other significant comorbidities with life expectancy of \<1 year. 5. Previous history of angioedema associated with ACEI/ARB treatment, hereditary or idiopathic angioedema. 6. Patients with renal artery stenosis history. 7. Current stage D HF patients requiring vasoactive drugs. 8. Symptomatic hypotension \< 100/60 mmHg at visit 1 (screening) or Symptomatic hypotension \< 90/60 mmHg in anti-hypertension drug treatment at visit 1 (screening). 9. Serum potassium \>5.4 mmol/L at visit 1 (screening). 10. Estimated glomerular filtration rate (eGFR) \< 30 mL/min/1.73m2 as measured at visit 1 (screening). 11. Pregnant or nursing (lactating) women. 12. Other exclusion depend on investigator's discretion.

Design outcomes

Primary

MeasureTime frameDescription
Proportion of Paired Patients With Ventricular Arrhythmia (VA) EventsUp to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)VA events were measured through devices to determine sustained ventricular tachycardia (SVT), non-sustained ventricular tachycardia (NSVT) and premature ventricular contraction (PVC). SVT was defined as tachycardia lasting for ≥30 seconds or with hemodynamic disorder as determined by Holter and/or device. NSVT was defined as recorded by Holter and/or device. PVC was defined as an early ventricular depolarization as determined by the device, and/or detected by Holter. PVC data were not available for patients with single -lumen implantation type
Proportion of Paired Patients Who Experienced at Least One ICD or CRT-D Shock and ATP EventUp to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)Once VA events were detected, implantable cardioverter defibrillator (ICD) could treat with high-energy shocks or Anti-tachycardia pacing (ATP). ATP consists of one or more trains of pacing stimuli, expressed as a percentage of the tachycardia cycle length for a given RR interval, from the onset of the preceding R wave. Patients with sustained VA events would receive ICD or cardiac resynchronization therapy-defibrillator (CRT-D) shock therapy.

Secondary

MeasureTime frameDescription
New York Heart Association ClassificationUp to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)To compare the changes in New York Heart Association (NYHA) level between ACEI/ARB and ARNI treatments. NYHA classification is a subjective physician's assessment of heart failure patient's functional capacity and symptomatic status. Class I - No limitation of physical activity. Class II - Slight limitation of physical activity. Comfortable at rest. Ordinary physical activity results in fatigue, palpitation, dyspnea (shortness of breath). Class III - Marked limitation of physical activity. Comfortable at rest. Less than ordinary activity causes fatigue, palpitation, or dyspnea. Class IV - Unable to carry on any physical activity without discomfort. Symptoms of heart failure at rest. If any physical activity is undertaken, discomfort increases.
Pairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsUp to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)To assess the number of occurrences of Ventricular arrhythmia (VA) events and Implantable cardioverter defibrillator (ICD) or Cardiac resynchronization therapy-defibrillator (CRT-D) shocks over 6 months of ACEI/ARB and 6 months of ARNI treatment. PVC data were not available for patients with single-lumen implantation type
Number of Hospitalizations for Arrhythmia or HF Related HospitalizationsUp to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)To compare the healthcare resource utilization of Heart Failure (HF) patients during ACEI/ARB and ARNI treatments
N-Terminal Prohormone of Brain Natriuretic Peptide (NT-proBNP) LevelUp to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)To compare the changes in the N-Terminal prohormone of Brain Natriuretic Peptide(NT-proBNP) level between ACEI/ARB and ARNI treatments. NT-proBNP are small proteins produced in large amounts when the heart senses it needs to work harder, such as in heart failure.
Left Ventricular Ejection FractionUp to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)To compare the changes in Left Ventricular Ejection Fraction (LVEF) between ACEI/ARB and ARNI treatments. LVEF is a measurement expressed as a percentage of how much blood in the left ventricle is pumped out with each contraction of the heart.

Countries

China

Participant flow

Recruitment details

Participants took part in 23 investigative sites in China

Pre-assignment details

All patients provided written informed consent prior to the start of any study-related activities.

Participants by arm

ArmCount
ACEI/ARB Followed by ARNI
Patients received angiotensin-converting enzyme inhibitor/angiotensin receptor blockers treatment the first 6 months. The following 6 months patients received angiotensin receptor neprilysin inhibitor treatment.
201
Total201

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAdverse Event2
Overall StudyDeath3
Overall StudyLost to Follow-up3
Overall StudyPatient/guardian's decision1
Overall StudyPatient withdraw informed consent9
Overall StudyPhysician Decision45
Overall Studysponsor terminated the study early16

Baseline characteristics

CharacteristicACEI/ARB Followed by ARNI
Age, Continuous61.3 years
STANDARD_DEVIATION 10.32
Race/Ethnicity, Customized
Asian
201 Participants
Sex: Female, Male
Female
41 Participants
Sex: Female, Male
Male
160 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
3 / 2010 / 140
other
Total, other adverse events
99 / 20158 / 140
serious
Total, serious adverse events
38 / 20119 / 140

Outcome results

Primary

Proportion of Paired Patients Who Experienced at Least One ICD or CRT-D Shock and ATP Event

Once VA events were detected, implantable cardioverter defibrillator (ICD) could treat with high-energy shocks or Anti-tachycardia pacing (ATP). ATP consists of one or more trains of pacing stimuli, expressed as a percentage of the tachycardia cycle length for a given RR interval, from the onset of the preceding R wave. Patients with sustained VA events would receive ICD or cardiac resynchronization therapy-defibrillator (CRT-D) shock therapy.

Time frame: Up to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)

Population: Efficacy analysis set (EAS): Patients in the safety set who received at least one dose of ARNI and completed 12 months of complete treatment and follow-up or withdrew early after receiving at least one dose of ARNI. Only subjects who had this measurement index successfully paired (ACEI/ARB treatment and ARNI treatment) were included in the analysis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
ACEI/ARBProportion of Paired Patients Who Experienced at Least One ICD or CRT-D Shock and ATP EventOccurrence of at least one ICD or CRT-D shock3 Participants
ACEI/ARBProportion of Paired Patients Who Experienced at Least One ICD or CRT-D Shock and ATP EventOccurrence of at least one ATP event15 Participants
ARNIProportion of Paired Patients Who Experienced at Least One ICD or CRT-D Shock and ATP EventOccurrence of at least one ICD or CRT-D shock2 Participants
ARNIProportion of Paired Patients Who Experienced at Least One ICD or CRT-D Shock and ATP EventOccurrence of at least one ATP event8 Participants
Comparison: Occurrence of at least one shockp-value: >0.9999McNemar
Comparison: Occurrence of at least one ATP eventp-value: 0.0654McNemar
Primary

Proportion of Paired Patients With Ventricular Arrhythmia (VA) Events

VA events were measured through devices to determine sustained ventricular tachycardia (SVT), non-sustained ventricular tachycardia (NSVT) and premature ventricular contraction (PVC). SVT was defined as tachycardia lasting for ≥30 seconds or with hemodynamic disorder as determined by Holter and/or device. NSVT was defined as recorded by Holter and/or device. PVC was defined as an early ventricular depolarization as determined by the device, and/or detected by Holter. PVC data were not available for patients with single -lumen implantation type

Time frame: Up to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)

Population: Efficacy analysis set (EAS): Patients in the safety set who received at least one dose of ARNI and completed 12 months of complete treatment and follow-up or withdrew early after receiving at least one dose of ARNI. Only subjects who had this measurement index successfully paired (ACEI/ARB treatment and ARNI treatment) were included in the analysis.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
ACEI/ARBProportion of Paired Patients With Ventricular Arrhythmia (VA) EventsAt least one SVT occurred13 Participants
ACEI/ARBProportion of Paired Patients With Ventricular Arrhythmia (VA) EventsAt least one NSVT occurred23 Participants
ACEI/ARBProportion of Paired Patients With Ventricular Arrhythmia (VA) EventsAt least one PVC occurred40 Participants
ARNIProportion of Paired Patients With Ventricular Arrhythmia (VA) EventsAt least one PVC occurred38 Participants
ARNIProportion of Paired Patients With Ventricular Arrhythmia (VA) EventsAt least one SVT occurred12 Participants
ARNIProportion of Paired Patients With Ventricular Arrhythmia (VA) EventsAt least one NSVT occurred21 Participants
Comparison: At least one SVT occurredp-value: >0.9999McNemar
Comparison: At least one NSVT occurredp-value: 0.7905McNemar
Comparison: At least one PVC occurredp-value: 0.625McNemar
Secondary

Left Ventricular Ejection Fraction

To compare the changes in Left Ventricular Ejection Fraction (LVEF) between ACEI/ARB and ARNI treatments. LVEF is a measurement expressed as a percentage of how much blood in the left ventricle is pumped out with each contraction of the heart.

Time frame: Up to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)

Population: Efficacy analysis set (EAS): Patients in the safety set who received at least one dose of ARNI and completed 12 months of complete treatment and follow-up or withdrew early after receiving at least one dose of ARNI. Only participants with assessment of LVEF at 6 months of ACEI/ARB treatment and 6 months of ARNI treatment are included in the analysis.

ArmMeasureValue (MEAN)Dispersion
ACEI/ARBLeft Ventricular Ejection Fraction38.84 percentage of ejected bloodStandard Deviation 9.923
ARNILeft Ventricular Ejection Fraction41.24 percentage of ejected bloodStandard Deviation 10.021
p-value: 0.000895% CI: [1.11, 3.7]Wilcoxon signed-rank
Secondary

New York Heart Association Classification

To compare the changes in New York Heart Association (NYHA) level between ACEI/ARB and ARNI treatments. NYHA classification is a subjective physician's assessment of heart failure patient's functional capacity and symptomatic status. Class I - No limitation of physical activity. Class II - Slight limitation of physical activity. Comfortable at rest. Ordinary physical activity results in fatigue, palpitation, dyspnea (shortness of breath). Class III - Marked limitation of physical activity. Comfortable at rest. Less than ordinary activity causes fatigue, palpitation, or dyspnea. Class IV - Unable to carry on any physical activity without discomfort. Symptoms of heart failure at rest. If any physical activity is undertaken, discomfort increases.

Time frame: Up to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)

Population: Efficacy analysis set (EAS): Patients in the safety set who received at least one dose of ARNI and completed 12 months of complete treatment and follow-up or withdrew early after receiving at least one dose of ARNI. Only participants with assessment of NYHA at 6 months of ACEI/ARB treatment and 6 months of ARNI treatment are included in the analysis.

ArmMeasureValue (MEAN)Dispersion
ACEI/ARBNew York Heart Association Classification2.03 score on a scaleStandard Deviation 0.499
ARNINew York Heart Association Classification2.00 score on a scaleStandard Deviation 0.509
p-value: 0.573395% CI: [-0.07, 0.04]Ridit analysis
Secondary

N-Terminal Prohormone of Brain Natriuretic Peptide (NT-proBNP) Level

To compare the changes in the N-Terminal prohormone of Brain Natriuretic Peptide(NT-proBNP) level between ACEI/ARB and ARNI treatments. NT-proBNP are small proteins produced in large amounts when the heart senses it needs to work harder, such as in heart failure.

Time frame: Up to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)

Population: Efficacy analysis set (EAS): Patients in the safety set who received at least one dose of ARNI and completed 12 months of complete treatment and follow-up or withdrew early after receiving at least one dose of ARNI. Only participants with assessment of NT-proBNP at 6 months of ACEI/ARB treatment and 6 months of ARNI treatment are included in the analysis.

ArmMeasureValue (MEAN)Dispersion
ACEI/ARBN-Terminal Prohormone of Brain Natriuretic Peptide (NT-proBNP) Level1233.79 pg/mLStandard Deviation 1974.401
ARNIN-Terminal Prohormone of Brain Natriuretic Peptide (NT-proBNP) Level1002.33 pg/mLStandard Deviation 1738.4
p-value: 0.000695% CI: [-415.9, -47.02]Wilcoxon signed rank test
Secondary

Number of Hospitalizations for Arrhythmia or HF Related Hospitalizations

To compare the healthcare resource utilization of Heart Failure (HF) patients during ACEI/ARB and ARNI treatments

Time frame: Up to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)

Population: Efficacy analysis set (EAS): Patients in the safety set who received at least one dose of ARNI and completed 12 months of complete treatment and follow-up or withdrew early after receiving at least one dose of ARNI.

ArmMeasureGroupValue (NUMBER)
ACEI/ARBNumber of Hospitalizations for Arrhythmia or HF Related HospitalizationsNumber of hospitalizations25 number of hospitalizations
ACEI/ARBNumber of Hospitalizations for Arrhythmia or HF Related HospitalizationsNumber of hospitalizations for heart failure13 number of hospitalizations
ARNINumber of Hospitalizations for Arrhythmia or HF Related HospitalizationsNumber of hospitalizations16 number of hospitalizations
ARNINumber of Hospitalizations for Arrhythmia or HF Related HospitalizationsNumber of hospitalizations for heart failure3 number of hospitalizations
Secondary

Pairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by Patients

To assess the number of occurrences of Ventricular arrhythmia (VA) events and Implantable cardioverter defibrillator (ICD) or Cardiac resynchronization therapy-defibrillator (CRT-D) shocks over 6 months of ACEI/ARB and 6 months of ARNI treatment. PVC data were not available for patients with single-lumen implantation type

Time frame: Up to 12 months (6 months of ACEI/ARB treatment and 6 months of ARNI treatment)

Population: Efficacy analysis set (EAS): Patients in the safety set who received at least one dose of ARNI and completed 12 months of complete treatment and follow-up or withdrew early after receiving at least one dose of ARNI. Only subjects who had this measurement index successfully paired (ACEI/ARB treatment and ARNI treatment) were included in the analysis.

ArmMeasureGroupValue (NUMBER)
ACEI/ARBPairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsNSVT5353 number of events
ACEI/ARBPairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsICD or CRT-D shock6 number of events
ACEI/ARBPairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsPVC9676979 number of events
ACEI/ARBPairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsATP217 number of events
ACEI/ARBPairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsSVT170 number of events
ARNIPairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsATP156 number of events
ARNIPairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsSVT117 number of events
ARNIPairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsNSVT1648 number of events
ARNIPairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsPVC17482398 number of events
ARNIPairwise Number of SVT, NSVT, PVC, ICD or CRT-D Shocks and ATP Events Experienced by PatientsICD or CRT-D shock5 number of events

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