Laron syndrome pathophysiology

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Laron syndrome Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Pathophysiology

Molecular genetic investigations have shown that this disorder is mainly associated with mutations in the gene for the GH receptor. These can result in defective hormone binding to the ectodomain or reduced efficiency of dimerization of the receptor after hormone occupancy. There are exceptionally low levels of insulin growth factor (IGF-1) and its principal carrier protein, insulin-like growth factor binding protein 3. Laron syndrome is a autosomal recessive disorder.