Type 1 diabetes

Searching for Monogenic Autoimmune Etiology in Patients With Type 1 Diabetes Onset Before 30 Months of Age

J Clin Endocrinol MetabPublished Genetic screening study

Authors' conclusion

T1D onset in the first year of life may indicate monogenic autoimmune diabetes and molecular testing may be recommended.

Study context

Population
Spanish pediatric patients with T1D onset between 9 and 30 months of age, selected from 500 pediatric patients with T1Dfrom 500 with T1D
Participants
44 patients
Outcome
Monogenic autoimmune diabetes (variants in AIRE, CTLA4, FOXP3, IL2RA, ITCH, LRBA, STAT1, STAT3, STAT5B)
Methodological detailsnext-generation sequencing with customized panel, RNA splicing analysis (RT-PCR and cDNA sequencing)
  • Next-generation sequencing with customized panel
  • RNA splicing analysis (RT-PCR and cDNA sequencing)

Main finding

As reported in the abstract

Likely pathogenic novel variants

Patients with likely pathogenic novel splicing variants, both with diabetes onset before 1 year of age

2

STAT5B variant

c.286-12_290del

FOXP3 variant

c.-22-2delA

Original publication

Searching for Monogenic Autoimmune Etiology in Patients With Type 1 Diabetes Onset Before 30 Months of Age. J Clin Endocrinol Metab. Published 28 January 2025. doi:10.1210/clinem/dgaf049

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