A Prospective, Open-labeled, Multi-centric Trial in Subjects With Systolic Heart Failure to Evaluate Bisoprolol Treatment for the Effects on Surrogate Markers of Heart Failure in Korea

Phase 4

Completed

Conditions: Heart Failure, Congestive

Interventions: Drug: Low Dose Bisoprolol
Drug: High Dose Bisoprolol

Registration Number: NCT01074307

Lead Sponsor: Merck KGaA, Darmstadt, Germany

Brief Summary: This is a prospective, open-labeled, multi-centric trial to evaluate the effect of bisoprolol (between low dose and high dose) on surrogate markers of heart failure in Korea.

Detailed Description: Subjects with systolic congestive heart failure (CHF) will be enrolled in this study after proper evaluation of NT-proBNP, global assessment of CHF, 6-minute walking test and improvement score of New York Heart Association (NYHA) and echocardiogram (left ventricular chamber size and ejection fraction \[LVEF\]). Each subject will be orally administered bisoprolol for 6 months starting at 1.25 mg at the Week 0 and titrated up to 10 mg during the 6 month period if the persistent standing systolic blood pressure (SBP) is greater than (\>) 90 millimeter of mercury (mm Hg) and there is no symptom of hypotension at the current dose medication (syncope, loss of consciousness, dizziness when standing up).

OBJECTIVES

Primary objective:

• To evaluate the effect of bisoprolol (between low dose and high dose) on surrogate markers of heart failure in Korea

Secondary objectives:

* To evaluate bisoprolol for the effects on clinical improvement of heart failure in Korea:

1. New York Heart Association (NYHA),

2. 6-minutes walking test

3. Echocardiogram (left ventricular chamber size and LVEF)

* Hospitalization due to heart failure

* To evaluate the safety and tolerability of bisoprolol

* Global assessment of CHF

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 180

Inclusion Criteria

Subjects with heart failure and at the age of 18 (inclusive) to 80 (exclusive)
Subjects with NYHA Class II-IV with dyspnea
Subjects with left ventricular ejection fraction (LVEF) of 40 percent or below on the echocardiogram
Eligible subjects who meet the criteria, are capable of participating in the study, and provide written informed consent to study participation after receiving a clear explanation about the study objective and nature

Exclusion Criteria

A subject who cannot understand or does not agree to the study contents
Subjects with conduction defect of 2nd degree or above atrioventricular block
Subjects with heart rate less than (<) 60 beats at rest
Subjects with systolic blood pressure < 100 mm Hg at rest
Subjects with renal failure (serum creatinine > 2.0 milligram per deciliter [mg/dL])
Subjects with unrecovered pulmonary edema
Subjects with history of myocardial infarction or stroke within 3 months
Subjects with history of coronary intervention or coronary bypass within 6 months
Subjects with heart failure due to mitral valve without valve replacement or aortic valvular disease (excluding moderate or less severe mitral insufficiency secondary to left ventricular expansion)
Subjects with history of valve replacement within the past 6 months
Subjects with history or scheduled heart transplantation
Subjects with reversible obstructive pulmonary disease
Subjects with other cases where beta blockers are contraindicated
Any surgical or internal disease that may put the subject at a higher risk due to study participation or may interfere with the subjects compliance to study requirements or completion of the study, based on the judgment of the Investigator
A subject with history of non-compliance to drug prescriptions or who is not willing to comply with the protocol
Subjects with a history of treated or untreated malignant tumor within the past 5 years
Pregnant or lactating women
Subjects with heart failure due to acute myocarditis
Subjects with continuous ventricular tachycardia with history of syncope within 3 months

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Low Dose Bisoprolol	Low Dose Bisoprolol	-
High Dose Bisoprolol	High Dose Bisoprolol	-

Primary Outcome Measures

Name	Time	Method
Percent Change From Baseline in N-terminal Pro B-type Natriuretic Peptide (NT-proBNP) at Week 26	Baseline and Week 26	B-type natriuretic peptide (BNP) is a substance secreted from the ventricles or lower chambers of the heart in response to changes in pressure that occur when heart failure develops and worsens. The level of BNP in the blood increases when heart failure symptoms worsen, and decreases when the heart failure condition is stable. The BNP level in a person with heart failure is higher than in a person with normal heart function. The percent change of NT-pro BNP was calculated according to the formula: N-terminal pro B-type natriuretic peptide (NT-proBNP) reduction ratio = 100\*(Baseline NT-proBNP - Week 26 NT-proBNP)/Baseline NT-proBNP.

Secondary Outcome Measures

Name	Time	Method
Percentage of Participants Classified as Class I to IV According to New York Heart Association (NYHA)	Baseline and Week 26	New York Heart Association (NYHA) classification of heart failure: Class I: No limitation: ordinary physical exercise does not cause undue fatigue, dyspnea, or palpitations. Class II: Slight limitation of physical activity: comfortable at rest but ordinary activity results in fatigue, palpitations, or dyspnea. Class III: Marked limitation of physical activity: comfortable at rest but less than ordinary activity results in symptoms. Class IV: Unable to carry out any physical activity without discomfort: symptoms of heart failure are present even at rest with increased discomfort with any physical activity.
Change From Baseline in 6-minute Walking Test (6-MWT) Distance at Week 26	Baseline and Week 26	6-minute Walking Test (6-MWT) distance was the distance that a participant could walk in 6 minutes. Participants were asked to perform the test at a pace that was comfortable to them, with as many breaks as they needed.
Change From Baseline in Echocardiographic Left Ventricular Ejection Fraction (LVEF) at Week 26	Baseline and Week 26	LVEF was defined as the fraction of blood (in percent) pumped out of the heart's left ventricular chamber with each heart beat and it is used to measure the cardiac output for the heart.
Change From Baseline in Echocardiographic Left Ventricular Size at Week 26	Baseline and Week 26	Left ventricle size was measured as systolic and diastolic Left Ventricular Internal Dimension (LVID). Diastolic dimension was measured of the left ventricle at the level of the chordae tendineae. The systolic dimension was measured as the smallest dimension between the left septal endocardium and the posterior wall endocardium during systole, whether or not the two walls were exactly apposed.
Number of Participants Who Were Re-hospitalized Due to Heart Failure and Who Died Due to Cardiovascular Disorder	Baseline up to Week 26
Number of Participants With Adverse Events (AEs)	Baseline up to Week 26	An adverse event (AE) is defined as any untoward medical occurrence in the form of signs, symptoms, abnormal laboratory findings, or diseases that emerges or worsens relative to baseline during a clinical study with an Investigational Medicinal Product (IMP), regardless of causal relationship and even if no IMP has been administered.
Mean Change From Baseline in Global Assessment of Congestive Heart Failure (CHF) Score at Week 26	Baseline and Week 26	Global assessment of CHF: The Investigator defined, graded, and recorded the participant's symptoms and signs by using a 6-point CHF scale ranging from 0 (unassessable), 1 (worsened), 2 (no change), 3 (mildly improved), 4 (moderately improved) and 5 (markedly improved).