label: Monocarboxylate Transporter 1 Hyperinsulinism
label_lc: monocarboxylate transporter 1 hyperinsulinism
description: Hyperinsulinism due to mutation(s) in the regulatory region of the SLC16A1 gene, encoding monocarboxylate transporter 1 (MCT1). The mutation(s) result in aberrant expression of MCT1 in the beta cell, leading to inappropriate insulin secretion and hypoglycemia triggered by anaerobic exercise.