Last updated on May 2018

Observational Study of Glucose Tolerance Abnormalities in Patient With Cystic Fibrosis Homozygous for Phe 508 Del CFTR Treated by Lumacaftor-Ivacaftor

Brief description of study

Cystic Fibrosis related diabetes (CFRD), a major factor of morbid-mortality in CF, is characterized by a preclinical phase of glucose intolerance particularly long reaching up to 10 years.

At the physiopathology level, insulin secretion is determinant in the glucose tolerance abnormalities in CF. Indeed insulin secretion is dependent of the CFTR activity at the beta cell surface and inhibition of CFTR leads to a decrease in insulin secretion.

Recently, the combination of the lumacaftor, a CFTR corrector, with Ivacaftor, a CFTR potentiator, was studied in patient with CF homozygous for the Phe508 del CFTR mutation patients and showed an improvement of the respiratory state in comparison with the placebo group.

These data suggests that lumacaftor in combination with ivacaftor in targeting CFTR action may have an early impact on the insulin-secretion and consequently on the glucose tolerance.

Clinical Study Identifier: NCT03512119

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Recruitment Status: Open

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