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Clinical and molecular data from 61 Brazilian cases of Congenital Hyperinsulinemic Hypoglycemia

Raphael Del Roio Liberatore1, Priscila Manzini Ramos1, Gil Guerra2

  • 1Ribeirão Preto Medical School, University of São Paulo, Rua Elzira Sammarco Palma, 400/43, Ribeirão Preto, SP Brazil.

Diabetology & Metabolic Syndrome
|May 15, 2015
PubMed

Insights

This study analyzed Brazilian patients with Congenital Hyperinsulinemic Hypoglycemia (CHH), identifying key genetic mutations. Findings align with global data, aiding in understanding this rare condition.

Area of Science:

  • Pediatric Endocrinology
  • Medical Genetics
  • Molecular Biology

Background:

  • Congenital Hyperinsulinemic Hypoglycemia (CHH) is a rare genetic disorder causing persistent hypoglycemia.
  • Understanding the clinical and molecular landscape of CHH is crucial for diagnosis and management.

Purpose of the Study:

  • To characterize the clinical and molecular features of Brazilian CHH patients.
  • To identify common genetic mutations associated with CHH in this cohort.

Main Methods:

  • Clinical data collection from 61 CHH patients in Brazil.
  • DNA extraction and mutation analysis of key CHH-associated genes (ABCC8, KCNJ11, GCK, GLUD1, HADH, SLC16A1, HNF4A).

Main Results:

  • Genetic mutations were identified in 53 patients, with ABCC8 (28%), GLUD1 (17%), and KCNJ11 (11%) being the most frequent.
  • Clinical data revealed a mean age at diagnosis of 75 days, with 28% of cases presenting macrosomia.

Conclusions:

  • This Brazilian study successfully compiled a significant cohort of CHH cases.
  • Clinical and molecular findings are consistent with international data, supporting a shared genetic basis for CHH globally.
Abstract

Keywords:
CongenitalHypoglycemiaNeonatal

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