Congenital Myotonic Dystrophy (CDM) is a multi-systemic, dominantly inherited disorder caused by a trinucleotide repeat expansion (CTGn) in the DMPK gene. CDM occurs when the CTGn increases between the adult myotonic dystrophy type-1 (DM1) parent and the child. Children with CDM present at birth with respiratory insufficiency, talipes equinovarus, feeding difficulties and hypotonia. There is a 30% mortality rate in the first year of life. As children grow, they are at risk for intellectual impairment, autistic features, gastrointestinal symptoms, and motor delay. The investigators will enroll children with CDM between ages 0-15 with visits at baseline and one year to evaluate appropriate physical functional outcomes, cognitive function and quality of life over time. Functional outcome measures will be correlated with potential biomarkers in the children. Completion of these specific aims will extend the understanding of disease progression in CDM and will provide the requisite information for successful therapeutic trials in children with DM.
Study Type
OBSERVATIONAL
Enrollment
100
Longitudinal disease progression
Virginia Commonwealth University
Richmond, Virginia, United States
Pediatric Neuromuscular Research, Children's Hospital - LHSC
London, Ontario, Canada
Centro Clinico Nemo
Milan, Italy
Grip Strength
Measure of force generated by hand grip
Time frame: 1 year
Congenital and Childhood Onset Myotonic Dystrophy Health Index (CCMDHI)
Disease specific patient and parent reported outcome measure of quality of life
Time frame: 1 year
6-minute walk
Assess distance walked over 6 minutes as a sub-maximal test of aerobic capacity/endurance
Time frame: 1 year
Behavior Rating Inventory of Executive Function (BRIEF)
An 86-item parent/caregiver-proxy and teacher-proxy rating form of executive function skills in every-day settings such as school, home, and social situations
Time frame: 1 year
Lip Force
Measure of force generation by orbicularis oris
Time frame: 1 year
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