for males ages 7-21 (full criteria)
Healthy Volunteers
healthy people welcome
study started
estimated completion
Principal Investigator
by Holden Wu, PhD (ucla)



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.

Official Title

Validating Cardiac MRI Biomarkers and Genotype-Phenotype Correlations for Duchenne Muscular Dystrophy (DMD)


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.


Muscular Dystrophy, Duchenne Muscular Dystrophies Cardiac MRI with contrast Cardiac MRI without contrast Blood Test Heart Rate Pulmonary Function Test Genetic Testing Repeat MRI scan


You can join if…

Open to males ages 7-21

  • 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

You CAN'T join if...

  • 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


  • University of California, Los Angeles accepting new patients
    Los Angeles California 90024 United States
  • Children's Hospital of Orange County accepting new patients
    Orange California 92868 United States

Lead Scientist at University of California Health

  • Holden Wu, PhD (ucla)
    Associate Professor-in-Residence, Radiological Sciences. Authored (or co-authored) 31 research publications.


accepting new patients
Start Date
Completion Date
Stanford University
Study Type
Last Updated