Safety and Efficacy of ARNI After LVAD ImplanT (SEAL-IT) Study

Phase 4

• Conditions: Stage D Heart Failure
• Interventions: Drug: Usual care (standard-of-care) arm; Drug: Sacubitril-Valsartan

• Registration Number: NCT04191681
• Lead Sponsor: The Cleveland Clinic

Brief Summary

The purpose of the study is to evaluate how well tolerated and effective an angiotensin receptor-neprilysin inhibitor (sacubitril-valsartan) is in patients with contemporary durable continuous flow left ventricular assist device (CF-LVAD) implantation compared to usual care oral vasodilator therapy.

Detailed Description

The aim of this pilot study is to prospectively determine the short-term (at 3 months) and long-term (at 6 and 12 months) safety and efficacy of an angiotensin receptor-neprilysin inhibitor (sacubitril-valsartan) in patients with contemporary durable continuous flow left ventricular assist device (CF-LVAD) implantation compared to standard-of-care (usual care) oral vasodilator therapy.

Study Timeline

• Study Start: 2019-11-08
• Study First Submitted: 2019-11-18
• Study First Submitted QC: 2019-12-05
• Study First Posted: 2019-12-10
• Status Verified: 2021-06
• Last Update Submitted: 2021-06-04
• Last Update Posted: 2021-06-07
• Primary Completion: 2022-03
• Study Completion: 2022-12

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 50

Inclusion Criteria

1. Adults (age ≥ 18 years)
2. Durable CF-LVAD for any indication
3. NYHA II to IV classification
4. LVEF < 40%
5. Written informed consent

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Exclusion Criteria

1. Inability to comply with the conditions of the protocol

2. Any patient with durable CF-LVAD who has any one of the following:

   i. symptomatic hypotension or MAP < 60 mm Hg at randomization,

   ii. eGFR < 30 mL/min/1.73 m2 at randomization,

   iii. potassium > 5.4 mM at randomization,

   iv. history of angioedema at randomization,

   v. history of unacceptable side effects with ACE inhibitor, ARB, or sacubitril-valsartan therapy at randomization,

   vi. use of vasoactive agents (e.g., dobutamine, dopamine, epinephrine, norepinephrine, phenylephrine, vasopressin, nitroglycerin, nitroprusside, epoprostenol) or parenteral diuretics in 24 hours preceding randomization.

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Usual care (standard-of-care) arm	Usual care (standard-of-care) arm	1. Continue current regimen of patients on oral vasodilator therapy (e.g., ACE inhibitor, ARB, hydralazine, isordil), allowing for up-titration of the drug every 2-4 weeks per standard practice guidelines in keeping with physician's discretion as above. 2. Start medication-naïve patients de novo on one of the oral vasodilators as below per guideline and label recommendations, allowing for up-titration of the drug every 2-4 weeks per standard practice guidelines in keeping with physician's discretion as above: i. ACE inhibitor: Enalapril 2.5 mg PO BID or Lisinopril 5 mg PO daily; ii. ARB: Valsartan 20 mg PO BID or Losartan 25 mg PO daily; iii. Other: Hydralazine 10 mg PO TID or Isordil 5 mg PO TID.
Sacubitril-valsartan study arm	Sacubitril-Valsartan	1. Start medication-naïve patients on low-dose sacubitril-valsartan (24/26 mg PO BID) without a washout period per guideline and label recommendations. 2. Switch patients to equivalent dose sacubitril-valsartan if on prior ACE inhibitor (after a 36 hour washout period) or ARB therapy (after discontinuing one day prior). 3. If therapeutic range MAP (65 to 85 mm Hg), discontinue other oral vasodilator (e.g., hydralazine, isordil) or non-rate limiting dihydropyridine calcium channel blocker (non-DHP CCB, e.g., amlodipine) therapy on the day prior to sacubitril-valsartan initiation. If MAP \> 85 mm Hg, low-dose sacubitril-valsartan will be added with or without discontinuation of other oral vasodilator or non-DHP CCB per physician's discretion based on drug tolerability and maintenance of therapeutic range MAP. 4. Sacubitril-valsartan can be up-titrated every 2-4 weeks per standard practice guidelines per physician's discretion as above.

Primary Outcome Measures

Name	Time	Method
Time-averaged proportional change in NT-proBNP concentration (pg/mL) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 3 months	3 months	Time-averaged proportional change in NT-proBNP concentration (pg/mL) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 3 months.
Incidence of drug discontinuation from drug-related adverse events due to sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 3 months	3 months	Incidence of drug discontinuation from drug-related adverse events due to sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 3 months. Incidence of drug discontinuation is defined as the number of patients exposed to the drug with an adverse event over the total number of patients exposed to the drug. An adverse event is defined as any one of the following: acute kidney injury with eGFR decline \> 25% from baseline, hyperkalemia with potassium \> 5.5 mM, hypotension with mean arterial pressure (MAP) \< 60 mm Hg, angioedema, dizziness, and/or cough.

Secondary Outcome Measures

Name	Time	Method
Absolute change in indexed right atrial volume (mL/m2) on echocardiogram with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in indexed right atrial volume (mL/m2) on echocardiogram with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Absolute change in mean right atrial pressure (mm Hg) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in mean right atrial pressure (mm Hg) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Proportion of patients (%) on other cardiac medications with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 3, 6 and 12 months relative to baseline	3, 6 and 12 months	Proportion of patients (%) on other cardiac medications (e.g., diuretics, aldosterone antagonists, beta-blockers, oral vasodilators, and anti-hypertensives) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 3, 6 and 12 months relative to baseline.
Proportion of patients (%) with heart failure readmissions with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 and 12 months	6 and 12 months	Proportion of patients (%) with heart failure readmissions with sacubitril-valsartan versus standard-of-care oral vasodilator therapy determined at 6 and 12 months.
Absolute change in mean left ventricular end-diastolic dimension (mm) on echocardiogram with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in mean left ventricular end-diastolic dimension (mm) on echocardiogram with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Absolute change in mean pulmonary artery diastolic pressure (mm Hg) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in mean pulmonary artery diastolic pressure (mm Hg) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Absolute change in pulmonary artery pulsatility index with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in pulmonary artery pulsatility index with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Absolute change in systemic vascular resistance (dynes-sec/cm5) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in systemic vascular resistance (dynes-sec/cm5) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Time-averaged proportional change in NT-proBNP concentration (pg/mL) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 and 12 months	6 and 12 months	Time-averaged proportional change in NT-proBNP concentration (pg/mL) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 and 12 months.
Proportion of patients (%) with effective MAP control (65 to 85 mm Hg) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 3, 6 and 12 months	3, 6 and 12 months	Proportion of patients (%) with effective MAP control (65 to 85 mm Hg) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 3, 6 and 12 months.
Proportion of patients (%) in each New York Heart Association (NYHA) classification with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 3, 6 and 12 months relative to baseline	3, 6 and 12 months	Proportion of patients (%) in each New York Heart Association (NYHA) classification (e.g., functional class I-IV) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 3, 6 and 12 months relative to baseline.
Absolute change in mitral E/A ratio on echocardiogram with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in mitral E/A ratio on echocardiogram with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Absolute change in indexed left atrial volume (mL/m2) on echocardiogram with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in indexed left atrial volume (mL/m2) on echocardiogram with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Absolute change in mean pulmonary artery pressure (mm Hg) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in mean pulmonary artery pressure (mm Hg) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Absolute change in pulmonary vascular resistance (Woods Unit) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in pulmonary vascular resistance (Woods Unit) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Absolute change in mean pulmonary capillary wedge pressure (mm Hg) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in mean pulmonary capillary wedge pressure (mm Hg) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.
Absolute change in cardiac index (L/min/m2) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy at 6 weeks and/or 3, 6 and/or 12 months	6 weeks and/or 3, 6 and/or 12 months	Absolute change in cardiac index (L/min/m2) with sacubitril-valsartan versus standard-of-care oral vasodilator therapy evaluated at 6 weeks and/or 3, 6 and/or 12 months.

Trial Locations

Locations (1)

Cleveland Clinic; 🇺🇸 Cleveland, Ohio, United States