- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03802279
Evaluate the Effort Test as a Therapeutic Monitoring Tool in Acute Rhabdomyolyses (EFFORHAB)
Study of the Correlation Between the Effort Test, With the Assessment of Peripheral Oxygen Consumption and Cardiac Output in Patients With Acute Rhabdomyolysis Related to a Hereditary Disease of Metabolism, and the Biochemical Flux on Myoblasts: Evaluate the Effort Test as a Therapeutic Monitoring Tool in Acute Rhabdomyolyses
The prognosis of rhabdomyolyses related to hereditary diseases of metabolism is poor and treatments are only symptomatic. Rhabdomyolysis outbreaks are frequently precipitated by fever and fasting. They are unpredictable. In spite of the care of patient in an intensive care unit, the occurrence of renal failure and heart rhythm disorders explains a significant acute-phase mortality rate. There is an urgent need to understand the pathophysiological mechanisms of rhabdomyolyses related to hereditary diseases of metabolism, in order to identify specific treatments.
Patients with rhabdomyolyses have few clinical signs outside of access. So there is a methodological difficulty in following a treatment test. There is an urgency to identify follow-up parameters in anticipation of new therapies.
The objective of this study is to validate the hypothesis that effort test and cardiac function parameters are usable in the treatment monitoring for patients with acute rhabdomyolysis linked to a hereditary disease of metabolism and thus propose the effort test as an assessment tool for future clinical trials. In order to do so, the correlation between the results of the effort tests, performed to each patient with rhabdomyolysis related to a hereditary disease of metabolism, with the severity of the disease will be evaluated. This study is original because it opens up innovative prospects for monitoring in the field of hereditary diseases of metabolism, with the identification of new monitoring tools.
Study Overview
Status
Intervention / Treatment
Detailed Description
Rhabdomyolysis is a poorly known symptom associated with the destruction of skeletal muscle cells. The diagnosis of rhabdomyolyses is carried when the dosage of muscle enzymes, in particular creatine phosphate kinase (KPC), is greater than 1000 U/L (normal < 160 U/L).
Rhabdomyolyses may be of viral origin, but fever and viruses are also triggers of genetic diseases. Also, the incidence of genetic rhabdomyolyses, representing 10 to 15% of all rhabdomyolyses, is underestimated. Genetic causes are heterogeneous. They are mainly attributed to hereditary diseases of metabolism, in particular fatty acid oxidation defects, Lipin-1 deficiency, muscle glycogenoses, TANGO2 deficiency, mitochondrial cytopathies and calcium channels anomalies of in particular RYR1.
Whatever the cause, traumatic, infectious or genetic, the rhabdomyolyses cause an alteration of the metabolism of adenosine triphosphate and a deregulation of the ionic channels, with the consequences of an intracytoplasmic calcium release and the destruction of muscle cells.
The prognosis of rhabdomyolyses related to hereditary diseases of metabolism is poor and treatments are only symptomatic. Rhabdomyolysis outbreaks are frequently precipitated by fever and fasting. They are unpredictable. In spite of the care of patient in an intensive care unit, the occurrence of renal failure and heart rhythm disorders explains a significant acute-phase mortality rate. There is an urgent need to understand the pathophysiological mechanisms of rhabdomyolyses related to hereditary diseases of metabolism, in order to identify specific treatments.
The pathophysiological mechanism of rhabdomyolyses related to Lipin-1 deficiency has been identified. Two patients with Lipin-1 deficiency treated in vivo by Hydroxychloroquine (Plaquenil ®, 6 mg/kg/day by one oral intake) rapidly standardized their serum inflammatory profile and corrected their clinical phenotype: Plasma creatine phosphokinase levels, Amount of mitochondrial DNA in plasma, number of myolyses, muscular pain, quality of life. One of these two patients, suffering from cardiac dysfunction already reported in Lipin-1 deficiency (left ventricular ejection fraction or LVEF 45%), significantly and durably improved cardiac function after one month of treatment (LVEF 62%). In addition, his fatigability and sleep disturbances have dramatically improved.
Disruption of mitophagy and immunity could be a common denominator for rhabdomyolyses linked to hereditary diseases of metabolism, which could, despite their heterogeneity, benefit from a common therapeutic approach, Now non-existent. There could be a role of inflammation in rhabdomyolyses outbreaks of metabolic origin and new therapeutic approaches could be imagined as in the Lipin-1 deficiency.
Patients with rhabdomyolyses have few clinical signs outside of access. So there is a methodological difficulty in following a treatment test. There is an urgency to identify follow-up parameters in anticipation of new therapies.
In the Lipin deficiency, an anomaly of the effort tests with measurement of oxygen consumption and cardiac output was characterized. These effort tests were carried out in the context of care, in order to recognize for a given patient whether the practice of sport is a factor triggering rhabdomyolysis.
The objective of this study is to validate the hypothesis that effort test and cardiac function parameters are usable in the treatment monitoring for patients with acute rhabdomyolysis linked to a hereditary disease of metabolism and thus propose the effort test as an assessment tool for future clinical trials. To date, no tests are available for clinical trials. In order to do so, the correlation between the results of the effort tests, performed to each patient with rhabdomyolysis related to a hereditary disease of metabolism, with the severity of the disease will be assessed, including:
1) Metabolic flux on myoblasts, 2) clinical severity (onset of disease, number of rhabdomyolyses, cardiomyopathy), 3) genotype.
This study is original because it opens up innovative prospects for monitoring in the field of hereditary diseases of metabolism, with the identification of new monitoring tools.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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-
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Paris, France, 75015
- Hopital Necker-Enfants Malades
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
subjects with metabolic rhabdomyolysis related to a hereditary metabolic disease :
Inclusion Criteria:
- pathology characterized on the biochemical and molecular level
- patients who can make an effort test
- patients who benefited from a diagnostically targeted muscle biopsy with backup of myoblasts (group 1)
- patients who have benefited from a diagnostically targeted muscle biopsy but whose myoblasts are not available (group 2) Exclusion Criteria
- inability or refusal of compliance to the requirements of the research
- patients with contraindications for the effort test in particular heart failure and acute rhabdomyolysis
- Patients without biochemical and/or molecular diagnosis
Criteria for inclusion of witness patients :
- holders of parental authority and/or patients not opposed to the use of their cardio-respiratory analysis results for this study or to the use of their myoblasts for this study
- normal cardio-respiratory analysis results
- normal myoblasts (group 4).
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Control
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Rhabdomyolysis with myoblasts back up
Patients with a rhabdomyolysis linked to a hereditary disease of metabolism who have benefited from a diagnostically muscle biopsy and whose myoblasts are available. Patients benefit from an effort test as part of their care. |
Cardiac function: Echocardiography: left ventricular ejection fraction and global longitudinal strain will be measured. Cardiopulmonary exercise test (CPET): left ventricular stroke volume was assessed noninvasively using a thoracic bioelectrical impedance device : maximal stroke volume at the peak of effort will be considered. Peripheral muscle function:
Functional tests performed on fibroblasts in primary culture, using as tracers of stable isotope-labeled substrates.
The metabolites of interest are assayed in mass spectrometry.
|
Rhabdomyolysis
Patients with a rhabdomyolysis linked to a hereditary disease of metabolism who have benefited or not from a diagnostically muscle biopsy but whose myoblasts are not available. Patients benefit from an effort test as part of their care. |
Cardiac function: Echocardiography: left ventricular ejection fraction and global longitudinal strain will be measured. Cardiopulmonary exercise test (CPET): left ventricular stroke volume was assessed noninvasively using a thoracic bioelectrical impedance device : maximal stroke volume at the peak of effort will be considered. Peripheral muscle function:
|
Witness patients : effort test
10 patient-matched healthy controls for age and sex having performed an effort test and cardiac exploration as part of their care.
|
Cardiac function: Echocardiography: left ventricular ejection fraction and global longitudinal strain will be measured. Cardiopulmonary exercise test (CPET): left ventricular stroke volume was assessed noninvasively using a thoracic bioelectrical impedance device : maximal stroke volume at the peak of effort will be considered. Peripheral muscle function:
|
Witness patients : myoblasts
6 healthy controls matched by age and sex having performed a muscle biopsy as part of their care and whose myoblasts are kept.
|
Functional tests performed on fibroblasts in primary culture, using as tracers of stable isotope-labeled substrates.
The metabolites of interest are assayed in mass spectrometry.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Measurement of cardiac output (Q)
Time Frame: Day 0
|
Effort test
|
Day 0
|
Measurement of oxygen consumption (VO2)
Time Frame: Day 0
|
Effort test
|
Day 0
|
Calculation of the slope of the relationship heart rate-oxygen consumed (dQ/dVO2)
Time Frame: Day 0
|
Effort test
|
Day 0
|
Calculation of the maximum arteriovenous difference (DAV) : DAV=VO2/Q
Time Frame: Day 0
|
Effort test
|
Day 0
|
Calculation of maximum muscle diffusion (DM) using the equation of Fick: DM = (Q x DAV)/(200-DAV)
Time Frame: Day 0
|
Effort test
|
Day 0
|
Peripheral muscular oxygenation
Time Frame: Day 0
|
Measurement of peripheral muscular oxygenation during the effort test.
|
Day 0
|
Systolic ejection volume at the peak of the effort during the effort test
Time Frame: Day 0
|
Evaluation of cardiac performance by the value of the systolic ejection volume at the peak of the effort. The systolic ejection volume is measured beat per beat during the effort test. |
Day 0
|
Ejection fraction of the left ventricle
Time Frame: Day 0
|
Measurement of the ejection fraction of the left ventricle in Simpson biplane and the longitudinal strain of the left ventricle in echocardiography.
|
Day 0
|
Metabolic pathways of myoblasts
Time Frame: From study start until 26 months
|
Myoblasts will be incubated in the presence of stable isotope-labeled tracers.
The natural metabolites labelled with stable isotopes will be dosed.
The acylcarnitines will be dosed on a mass spectrometer.
The Krebs cycle intermediates will be measured in gas chromatography coupled with mass spectrometry.
|
From study start until 26 months
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Presence of cardiomyopathy
Time Frame: Day 0
|
Clinical severity of rhabdomyolysis linked to a hereditary disease of metabolism.
|
Day 0
|
Age of onset of disease (neonatal, < 2 years, 2 - 10 years, > 10 years)
Time Frame: Day 0
|
Clinical severity of rhabdomyolysis linked to a hereditary disease of metabolism.
|
Day 0
|
Number of acute episodes of rhabdomyolyses
Time Frame: Day 0
|
Clinical severity of rhabdomyolysis linked to a hereditary disease of metabolism.
|
Day 0
|
Character of mutations nonsense or missense of the hereditary disease of metabolism
Time Frame: Day 0
|
Genotypic severity of rhabdomyolysis linked to a hereditary disease of metabolism. Information available in the patient medical record. |
Day 0
|
Collaborators and Investigators
Investigators
- Principal Investigator: Pascale de Lonlay, Assistance Publique - Hôpitaux de Paris
- Study Chair: Antoine Legendre, MD, PhD, Assistance Publique - Hôpitaux de Paris
- Study Chair: Florence Habarou, MD, PhD, Assistance Publique - Hôpitaux de Paris
- Study Chair: Caroline Tuchmann-Durand, Pharm. D, PhD, Assistance Publique - Hôpitaux de Paris
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- APHP 180 009
- 2018-A01771-54 (Registry Identifier: ID-RCB)
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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