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Diabetes mellitus with Laron syndrome: case report
Summary
This case study shows a Laron syndrome patient who developed type 2 diabetes due to genetic factors and obesity. Oral antidiabetic agents and lifestyle changes may be best for managing diabetes in Laron syndrome.
Area of Science:
- Endocrinology
- Metabolic Disorders
- Genetics
Background:
- Laron syndrome (LS) is a rare genetic disorder characterized by insulin-like growth factor 1 (IGF-1) deficiency.
- Glucose metabolism alterations in LS patients are debated, with limited data on diabetes development.
- This report details the management of type 2 diabetes in an adolescent with LS.
Observation:
- A 19-year-old male with LS, previously treated with recombinant IGF-1 (rIGF-1), presented with hyperglycemia after discontinuing therapy.
- His HbA1c rose from 5.4% to 7.5% one year after rIGF-1 cessation, coinciding with increased weight for height.
- Insulin therapy was initiated, later switched to oral antidiabetic (OAD) agents due to normal C-peptide levels.
Findings:
- The patient's type 2 diabetes was attributed to genetic predisposition (family history of type 2 diabetes) and abdominal obesity.
- Switching to rIGF-1 therapy again led to impaired glucose control, necessitating a return to OAD therapy.
- OAD therapy, combined with lifestyle modifications, effectively managed his diabetes, achieving an HbA1c of 5.7%.
Implications:
- This case highlights the potential for developing type 2 diabetes in Laron syndrome patients, influenced by genetic and environmental factors.
- Oral antidiabetic agents and lifestyle interventions appear to be a suitable treatment strategy for diabetes in LS.
- Further research is needed to understand the complex interplay between LS, IGF-1, and glucose metabolism.
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