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Validating Cardiac MRI Biomarkers and Genotype-Phenotype Correlations for DMD

key information

study id #: NCT02834650

condition: Duchenne Muscular Dystrophy

status: recruiting

purpose:

This study will collect MRI from healthy volunteer boys and boys with Duchenne Muscular Dystrophy (DMD) to help researchers identify and validate cardiac MRI biomarkers to better understand the health of the heart and changes in heart health over time in boys with DMD. Currently, there is a lack of sufficiently well characterized cardiac MRI biomarkers that can serve as endpoints for detecting on-target and/or off-target cardiac effects during clinical drug trials for boys with DMD. Consequently, the first objective is to identify and characterize several cardiac MRI biomarkers for boys with DMD.

intervention:
Cardiac MRI with contrast, Cardiac MRI without contrast, Blood Test, Heart Rate, Pulmonary Function Test, Genetic Testing, Repeat MRI scan

mechanism of action: No pharmaceutical intervention

results: https://clinicaltrials.gov/ct2/show/results/NCT02834650

last updated: May 15, 2019

study details

start date: February 1, 2017

estimated completion: January 2021

phase of development: N/A

size / enrollment: 178

study description:
The second objective is to use their well-characterized cardiac MRI biomarkers and define their sensitivity for detecting early cardiac involvement. The final objective is to use these validated cardiac MRI biomarkers to better understand the genotype-phenotype correlation in boys with DMD, which to date remain tenuous. The investigators propose a pilot study to explore cardiac genotype-phenotype correlations in boys with DMD and outlier phenotypes using approaches they have pioneered for skeletal muscle.

primary outcomes:

  • Myocardial Tissue Characterization [ Time Frame: 6 months ]
    Focal and diffuse fibrosis, intra myocardial fat, edema plus water mobility
  • Myocardial Functional Characterization [ Time Frame: 6 months ]
    Strain imaging and rotational mechanics
  • Genomic Analysis [ Time Frame: 4 years ]
    Proposing mechanisms of cardiac dysfunction or protective phenotypes using genomic analysis

inclusion criteria:

• Eligible Sexes:

• Healthy boys or pediatric patients with DMD age 7 to 21
• Able & willing to complete an approximately 75-minute (or less) MRI exam without sedation or mechanical ventilation
• Drug regimen (if applicable) stable for at least 3 months prior to participation

exclusion criteria:
• Renal insufficiency (GFR<40 mL/min/m2)
• Non-MRI compatible implants (e.g. neurostimulator, pacemaker, implanted cardioverter defibrillator)
• Claustrophobia that prevents an MRI exam
• Known allergy to MRI contrast agents
• Serum potassium level of >5.0 mmol/L
• Signs and symptoms of heart failure

study contacts

sponsor: University of California, Los Angeles

contacts:
Stephanie Gilbert, 310-794-0376, Sgilbert@mednet.ucla.edu;
Tammy Floore (RN), 310-794-9202, Tfloore@mednet.ucla.edu

investigators: Daniel Ennis, PhD

trial center locations: United States