Related Experiment Video

Updated: Apr 23, 2026

Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells
09:39

Modeling Myotonic Dystrophy 1 in C2C12 Myoblast Cells

Published on: July 29, 2016

14.9K

[Two cases of congenital myotonic dystrophy type 1 caused by DMPK gene variants]

Xiao-Hong Wang1, Chen-Hong Wang1, Yan-Ping Xu1

  • 1Neonatal Intensive Care Unit, Children's Hospital, Zhejiang University School of Medicine/National Clinical Research Center for Children and Adolescents' Health and Diseases/Zhejiang Key Laboratory of Neonatal Diseases, Hangzhou 310052, China.

Zhongguo Dang Dai Er Ke Za Zhi = Chinese Journal of Contemporary Pediatrics
|April 22, 2026
PubMed

Insights

Congenital myotonic dystrophy type 1, a severe genetic disorder, was diagnosed in two neonates with a DMPK gene CTG repeat expansion. Early genetic testing and counseling are crucial for managing this rare condition and preventing birth defects.

Area of Science:

  • Genetics
  • Neurology
  • Pediatrics

Background:

  • Congenital myotonic dystrophy type 1 (CDM1) is a severe, rare genetic disorder.
  • Neonatal presentation often includes respiratory distress, hypotonia, and ventilator dependence.

Purpose of the Study:

  • To report two cases of CDM1 in male neonates.
  • To highlight the importance of early diagnosis and genetic testing for CDM1.

Main Methods:

  • Clinical presentation assessment.
  • Genetic testing for DMPK gene CTG repeat expansion.

Main Results:

  • Both patients presented with neonatal hypotonia and respiratory distress requiring ventilator support.
  • Genetic testing confirmed DMPK gene CTG repeat expansion in both neonates, consistent with CDM1.
  • Patient 2 presented with a rare combination of hypoxic-ischemic encephalopathy and diaphragmatic eventration.

Conclusions:

  • Early identification of CDM1 through genetic testing is vital for affected neonates.
  • Genetic counseling is essential for families to guide future pregnancies and reduce the incidence of birth defects.
  • Prompt diagnosis and management can improve outcomes for this severe genetic disorder.

Keywords:
Congenital myotonic dystrophy type 1DMPK geneDiaphragmatic eventrationHypotoniaInfant

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