The purpose of the study was to evaluate the safety, tolerability and pharmacokinetics of an intravenous infusion of serelaxin on top of standard of care therapy, in pediatric patients with acute heart failure (AHF)
The study was terminated early and the pediatric development of serelaxin in the treatment of acute heart failure (AHF) discontinued, following the results of the phase III study RELAX-AHF-2 (CRLX030A2301/NCT01870778) study in adult patients with AHF. Whilst no new safety concerns associated with serelaxin were observed, the study in adults did not meet either of its primary endpoints
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
12
Serelaxin was administered intravenously for up to 48 hours.
Novartis Investigative Site
Denver, Colorado, United States
Novartis Investigative Site
St Louis, Missouri, United States
Novartis Investigative Site
The Bronx, New York, United States
Number of Patients With Treatment Emergent Adverse Events, Serious Adverse Events and Death
Number of patients with treatment emergent adverse events (including confirmed systolic blood pressure decreases and worsening heart failure), serious adverse events and death were reported.
Time frame: through 28 days + 30 days SAE follow up after completion or discontinuation from the study
Pharmacokinetic Concentration for Low Dose 3-10-30 ug/kg/Day
Pharmacokinetic (PK) concentration was presented as the surrogate for PK parameters, the original primary endpoint, due to the unavailability of the PK parameters Css and CL. Serelaxin concentration was determined in serum by a validated Enzyme Linked ImmunoSorbent Assay (ELISA) based upon the commercially available kit from R\&D Systems (Catalogue No. DRL200). The ELISA method used a monoclonal antibody specific for human H2 relaxin as the capture reagent and an enzyme-linked polyclonal antibody specific for human.
Time frame: at 0, 2, 16, 22, 32, 40, 48 hr. during the infusion, at 0.5, 4, 8 hours post infusion or study drug discontinuation, and on day 28
Pharmacokinetic Concentration for High Dose (10-30-100 ug/kg/Day)
Pharmacokinetic (PK) concentration was presented as the surrogate for PK parameters, the original primary endpoint, due to the unavailability of the PK parameters Css and CL. Serelaxin concentration was determined in serum by a validated Enzyme Linked ImmunoSorbent Assay (ELISA) based upon the commercially available kit from R\&D Systems (Catalogue No. DRL200). The ELISA method used a monoclonal antibody specific for human H2 relaxin as the capture reagent and an enzyme-linked polyclonal antibody specific for human.
Time frame: at 0, 2, 16, 22, 32, 40, 48 hr. during the infusion, at 0.5, 4, 8 hours post infusion or study drug discontinuation, and on day 28
Change From Baseline in Mean Left Arterial Pressure for Low Dose (3-10-30 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study.
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Novartis Investigative Site
Philadelphia, Pennsylvania, United States
Novartis Investigative Site
Charleston, South Carolina, United States
Novartis Investigative Site
Berlin, Germany
Novartis Investigative Site
Freiburg im Breisgau, Germany
Novartis Investigative Site
München, Germany
Novartis Investigative Site
Geneva, Switzerland
Novartis Investigative Site
London, United Kingdom
Time frame: baseline, prior to each dose escalation, and at 24 hr. post end of infusion
Change From Baseline in Mean Left Arterial Pressure for High Dose (10 -30-100 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study.
Time frame: baseline, prior to each dose escalation, and at 24 hr. post end of infusion
Change From Baseline in Mean Pulmonary Artery Pressure (PAP- Systolic and Diastolic) for Low Dose (3-10-30 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day3: 24 hours post infusion
Change From Baseline in Mean Pulmonary Artery Pressure (PAP- Systolic and Diastolic) for High Dose (10-30-100 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion
Change From Baseline in Mean Central Venous Pressure for Low Dose (3-10-30 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion
Change From Baseline in Mean Central Venous Pressure for High Dose (10-30-100 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion
Baseline and Change From Baseline in Mean Central Venous Pressure and Arterial Oxygen Saturation for Low Dose (3-10-30 ug/kg/Day)
This analysis includes central venous and arterial oxygen saturation measurement, yielding a calculation of the arterio-venous oxygen extraction, where available at each time point. If no arterial access was available, then arterial oxygen saturation measurement data were obtained using a pulse oximeter. The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion
Baseline and Change From Baseline in Mean Central Venous Pressure and Arterial Oxygen Saturation for High Dose (10-30-100 ug/kg/Day)
This analysis includes central venous and arterial oxygen saturation measurement, yielding a calculation of the arterio-venous oxygen extraction, where available at each time point. If no arterial access was available, then arterial oxygen saturation measurement data were obtained using a pulse oximeter. The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion
Baseline and Change From Baseline in Mean Urine Output for Low Dose (3-10-30 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion
Baseline and Change From Baseline in Mean Urine Output for High Dose (10-30-100 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion
Baseline and Change From Baseline in Mean Blood Lactate Levels (Arterial Blood) for Low Dose (3-10-30 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion
Baseline and Change From Baseline in Mean Blood Lactate Levels (Central Venous Blood) for Low Dose (3-10-30 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion
Baseline and Change From Baseline in Mean Blood Lactate Levels (Arterial Blood) for High Dose (10-30-100 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion
Baseline and Change From Baseline in Mean Blood Lactate Levels (Central Venous Blood) for High Dose (10-30-100 ug/kg/Day)
The evaluations, as available, were done at baseline, prior to each dose escalation and at approximately 24 hours after the end of the infusion. Hemodynamic effects were also assessed for safety at additional time points during the study. Absolute values are presented at baseline; change from baseline values are presented at post-baseline time points
Time frame: Day 1: hour 0 (Baseline) and 16, Day 2: hour 32 and 48, Day 3: 24 hours post infusion