Evaluation of Congenital Hyperinsulinism Using 18F-FDOPA PET

Area of Science:

• Pediatric Endocrinology
• Medical Genetics
• Surgical Oncology

Background:

• Congenital hyperinsulinism (HI) is a leading cause of persistent infant hypoglycemia.
• Mutations in insulin secretion regulatory genes cause HI.
• Diazoxide-unresponsive HI may necessitate surgical intervention.

Purpose of the Study:

• To highlight the role of genetic analysis in managing congenital hyperinsulinism.
• To determine the utility of genetic testing in predicting focal disease.
• To identify patients who would benefit from 18F-l-dihydroxyphenylalanine PET scans.

Main Methods:

• Review of genetic analysis techniques for HI.
• Correlation of genetic findings with disease presentation.
• Evaluation of diagnostic imaging for focal HI lesions.

Main Results:

• Approximately 50% of persistent HI cases exhibit a focal form.
• Focal HI is potentially curable with surgical resection.
• Rapid genetic analysis predicts focal disease likelihood.

Conclusions:

• Genetic analysis is crucial for predicting focal congenital hyperinsulinism.
• It aids in selecting patients for 18F-l-dihydroxyphenylalanine PET imaging.
• This approach optimizes surgical treatment decisions for HI.