Myotonic dystrophy type 1: clinical manifestations in children and adolescents

G Ho, KA Carey, M Cardamone… - Archives of disease in …, 2019 - adc.bmj.com
G Ho, KA Carey, M Cardamone, MA Farrar
Archives of disease in childhood, 2019adc.bmj.com
Objective Myotonic dystrophy type 1 (DM1) is an autosomal-dominant neuromuscular
disease with variable severity affecting all ages; however, current care guidelines are adult-
focused. The objective of the present study was to profile DM1 in childhood and propose a
framework to guide paediatric-focused management. Design, setting and patients 40
children with DM1 (mean age 12.8 years; range 2–19) were studied retrospectively for a
total of 513 follow-up years at Sydney Children's Hospital. 143 clinical parameters were …
Objective
Myotonic dystrophy type 1 (DM1) is an autosomal-dominant neuromuscular disease with variable severity affecting all ages; however, current care guidelines are adult-focused. The objective of the present study was to profile DM1 in childhood and propose a framework to guide paediatric-focused management.
Design, setting and patients
40 children with DM1 (mean age 12.8 years; range 2–19) were studied retrospectively for a total of 513 follow-up years at Sydney Children’s Hospital. 143 clinical parameters were recorded.
Results
The clinical spectrum of disease in childhood differs from adults, with congenital myotonic dystrophy (CDM1) having more severe health issues than childhood-onset/juvenile patients (JDM1). Substantial difficulties with intellectual (CDM1 25/26 96.2%; JDM1 9/10, 90.0%), fine motor (CDM1 23/30, 76.6%; JDM1 6/10, 60.0%), gastrointestinal (CDM1 17/30, 70.0%; JDM1 3/10, 30.0%) and neuromuscular function (CDM1 30/30, 100.0%; JDM1 25/30, 83.3%) were evident.
Conclusion
The health consequences of DM1 in childhood are diverse, highlighting the need for paediatric multidisciplinary management approaches that encompass key areas of cognition, musculoskeletal, gastrointestinal, respiratory, cardiac and sleep issues.
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