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

University Hospital, Strasbourg, France55 enrolled

Overview

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.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Cystic Fibrosis Homozygous for Phe 508 Del CFTR Glucose Intolerance or Newly Diagnosis Diabetes

Interventions

Eligibility

Sex: ALLMin age: 12 Years

Medical Language ↔ Plain English

Inclusion Criteria: * patients with CF homozygous for the Phe508del CFTR mutation aged 12 years and over * Combined Lumacaftor-Ivacaftor treatment scheduled or already started * glucose intolerance in OGTT (ADA criteria) or newly diabetes diagnosed at the OGTT (ADA criteria) or diabetic patients with insulin requirement ≤ 0.3 unit / kg / day or without insulin treatment * signed informed consent of patient and of one parent OR legal representative for minor subject Exclusion Criteria: * hypersensitivity to the active substances or to any of the excipients of Lumactfor -Ivacaftor * lung and/or liver transplant patient * Known diabetes with insulin treatment \> 0.3 unit / kg / day * patient pregnant or wishing to pregnancy

Locations (13)

Hôpitaux Universitaires de Strasbourg

Strasbourg, Alsace, France

Centre Hospitalier Universitaire d'Angers

Angers, France

Hôpital Renée Sabran

Giens, France

Centre Hospitalier Lyon Sud

Lyon, France

Hôpital NORD - Assistance Publique Hôpitaux de Marseille

Marseille, France

Hôpital Arnaud de Villeneuve

Montpellier, France

Hôpital Robert Debré

Paris, France

American Memorial Hospital

Reims, France

Clinique "Mucoviscidose" Presqu'île de Perharidy

Roscoff, France

Hôpital Charles Nicolle

Rouen, France

...and 3 more locations

Outcomes

Primary Outcomes

Measure of 2 hours plasma glucose value (mmol/l) of OGTT, change from baseline at one year of Lumacaftor-Ivacaftor treatment