Withdrawal of Medication in Recovered DCM

Dilated Cardiomyopathy Clinical Trial

— WrecEF  

Official title:

Withdrawal of Beta- Blockers and ACE Inhibitors After Left Ventricular Systolic Function Recovery in Patient With Dilated Cardiomyopathy: A Randomized Control Trial.

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT02770443
• Other study ID #: 15-284-MUHC
• Status: Terminated
• Phase: N/A
• Start date: February 19, 2016
• Est. completion date: November 2019

Study information

• Verified date: January 2020
• Source: McGill University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Randomized study of medication withdrawal in patients who have recovered LV function in Dilated Cardiomyopathy.

Description:

Importance of the study:

There is a growing population of patients with dilated cardiomyopathy (DCM) who had recovered left ventricular (LV) systolic function on medical therapy. Recent studies have shown a favorable clinical course in patients with DCM1-4. The heart failure (HF) guidelines states that discontinuation of medical therapy in this group of patients may be considered based on expert opinion. The safety of withdrawal of medical therapy needs further studies.

Hypothesis:

In Patients with dilated cardiomyopathy (DCM) who had recovery of the LV systolic function to a normal EF >50%, medical therapy withdrawal is attainable without Clinical deterioration or recurrence of LV systolic dysfunction.

Objective

1. To study the withdrawal of guideline directed medical therapy, specifically beta-blockers and ACE/ARB, in patients with DCM after recovery of LV EF.

2. Correlate the sustained recovery in LVEF after medication discontinuation with specific genetic markers of recovery.

Method:

Study design:

It is a multi-center, non-blinded, randomized Control trial (pilot) comparing withdrawal of medical therapy in patients with recovered LVEF (recEF) compared to patients continuing medical therapy. Therapeutic changes will occur in a 2:1 randomization at the Royal Victoria Hospital, the Montreal General Hospital and the Jewish General Hospital. Patient would be recruited from a Heart Function Clinic or the echocardiography lab.

Procedures:

Patient Selection:

Patient selection will be conducted through chart review, ECHO lab, as well as the clinical visits. The DPS authorization will be requested.

Informed consent:

At time of enrolment the study's objective, procedures as well as the risks and benefits will be explained to the patient. A consent form will be provided to the patient. In addition, a wallet card and a medication discontinuations chart.

Randomization:

Randomization will be conducted in 2:1 fashion, non-blinded, through a sealed envelop randomization system.

Medical therapy withdrawal:

Medical therapy withdrawal will be conducted in 2 phases.

Phase 1:

This phase involves the withdrawal of the beta-blocker. The patient will be followed for signs of deterioration for a period of 6 months following the withdrawal.

Phase 2:

If there are no signs of deterioration the ACE/ARB inhibitor will be withdrawn as well. The patient will be followed up in 6 month for signs of deterioration. All other medical therapies other than beta-blocker and ACE inhibitors will continue until successful withdrawal of beta-blockers and ACE inhibitor is achieved.

Beta-blocker discontinuation:

The initial tapering off will occur over a 2week period. The beta -blocker will be discontinued by the end of the 2nd week.

For example: Metoprolol 100mg bid to Metoprolol 75mg bid for 5days. Followed by Metoprolol 50mg bid for 4 days, then Metoprolol 25 mg for 3 days and then completely discontinued.

ACE/ARB discontinuation:

The discontinuation of ACE/ARB will be similar to the beta-blockers. The doses will be tapered over a two-week period.

A supplementary chart of dose reduction is provided. The doses included are the standard medication doses.

Digoxin, diuretic, spironolactone will be discontinued if both the beta-blocker and ACE-ARB discontinuation has been well tolerated or if a clinical indication warrants the discontinuation. Up titration of therapies will not be permitted.

Additional therapy for SBP > 130 or DBP >80mmHg with non-ACE or beta blocker therapy will be considered.

Genotyping: Genetic analysis for DCM causing gene will be sent for the study patients. The genotyping is selective, patient will have the option to opt out the genetic analysis if they do not prefer having a genotyping done. All samples will be stored in a bio bank to maximum of 25 years. Two comparisons will be conducted on the genotyping:

1. The genetic typing for Patients with improved EF will be compared to the control group from the ongoing DCM cohort at the McGill University Health Center.

2. A second comparison between the patients within the withdrawal cohort. A comparison will be made between patients with rebound HF and the patient who did not HF with discontinuation of medical therapy.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 22
• Est. completion date: November 2019
• Est. primary completion date: August 24, 2017
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

1. Patient diagnosed with dilated cardiomyopathy (DCM) with an initial HFrEF < 40 % at presentation.

2. DCM with recovered LV function to > or = to 50% documented on 2 ECHO examinations, with the most recent ECHO examination within 1 year of enrolment.

3. Time from initial diagnosis of DCM more or equal to 24 month.

4. Last hospitalization for decompensated HF > 1year.

Exclusion criteria:

1. Ischemic cardiomyopathy

2. Other structural pathology such as: Hypertrophic cardiomyopathy, Valvular cardiomyopathy or congenital heart disease.

3. Last hospitalization for decompensated HF < 1year ago.

4. Previous sustained ventricle tachycardia or ventricle fibrillation (VF) arrest.

Related Conditions & MeSH terms

• Cardiomyopathies
• Cardiomyopathy, Dilated
• Dilated Cardiomyopathy

Intervention

Drug:
• withdrawal
withdrawal of beta blocker and ACE inhibitors
• standard of CARE
STANDARD OF CARE, NO WITHDRAWAL OF MEDICAL THERAPY

Locations

Country	Name	City	State
Canada	Royal Victoria Hospital	Montreal	Quebec

Sponsors (3)

Lead Sponsor	Collaborator
McGill University	Jewish General Hospital, McGill University Health Centre/Research Institute of the McGill University Health Centre

Country where clinical trial is conducted

Canada, 

References & Publications (18)

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* Note: There are 18 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Number of patients that become symptomatic		1 year
Secondary	Number of patients that drop EF to <45%		1 year