Pediatric rheumatology

Monozygotic twins discordant for juvenile dermatomyositis: clinical, serological and gene expression studies

Pediatr Rheumatol Online JPublished Mechanistic study

Authors' conclusion

JDM twins (and two of the non-JDM twins) had significantly lower nailfold capillary ERL and decreased serum endoglin levels compared to healthy controls.

Study context

Population
Monozygotic twins discordant for Juvenile Dermatomyositis (JDM)5 twin pairs
Comparison
JDM twins vs non-JDM co-twins and healthy controls
Outcome
Gene expression differences between monozygotic twins discordant for JDM
Methodological detailsmonozygotic twins discordant for JDM
  • Monozygotic twins discordant for JDM

Main finding

As reported in the abstract

  • RNASeq (3 twin pairs): four genes differentially expressed between JDM and non-JDM twins: DCD, KRT14, COL1A1, COL3A1
  • JDM twin had significantly lower nailfold capillary end row loops (ERL) than healthy control; two non-JDM twins also had decreased ERL
  • Serum endoglin significantly lower in both JDM and non-JDM twins than in healthy control

Original publication

Monozygotic twins discordant for juvenile dermatomyositis: clinical, serological and gene expression studies. Pediatr Rheumatol Online J. Published 26 March 2025. doi:10.1186/s12969-025-01082-7

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