Update in neonatal diabetes.

Area of Science:

• Endocrinology and Metabolism
• Genetics and Genomics
• Pediatric Medicine

Background:

• Neonatal diabetes mellitus (NDM) is a rare, insulin-requiring monogenic form of diabetes diagnosed at birth or shortly after.
• Genetic studies are crucial for accurate diagnosis and effective treatment strategies in affected infants.
• Activating mutations in ATP-sensitive potassium channel protein subunits are the most frequent cause of NDM.

Purpose of the Study:

• To review new data and provide context on the diagnosis and management of neonatal diabetes mellitus.
• To highlight the critical role of genetic studies in identifying specific NDM subtypes and guiding therapy.
• To discuss the implications of genetic findings for transitioning patients from insulin to sulfonylurea medications.

Main Methods:

• Review of recent scientific data and genetic studies on neonatal diabetes.
• Analysis of common and emerging genetic causes of NDM, including channelopathies and other gene mutations.
• Evaluation of clinical presentations and therapeutic outcomes associated with different genetic forms of NDM.

Main Results:

• Recent data indicate NDM may be more prevalent than previously recognized, with diverse clinical presentations.
• Activating mutations in ATP-sensitive potassium channels account for approximately 50% of permanent NDM cases.
• Chromosome 6q24 abnormalities are the leading cause of transient NDM; other identified causes include mutations in proinsulin, FOXP3, glucokinase, and EIF2AK3.

Conclusions:

• Further research is needed to fully understand the spectrum of NDM forms, their clinical features, and associated conditions.
• Optimizing therapeutic strategies requires considering the specific genetic etiology and available treatment options.
• Genetic diagnosis is key to personalized treatment, potentially allowing sulfonylurea use in place of insulin for specific NDM types.