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An Efficacy and Safety Study of Ivacaftor in Patients With Cystic Fibrosis and Two Splicing Mutations

2016-10-18 02:08:21 | BioPortfolio

Summary

This postmarketing N of 2 study is designed to evaluate the efficacy and safety of open-label ivacaftor treatment in two sisters with cystic fibrosis and pancreatic sufficiency.

Description

The two sisters have a splicing mutation that is predicted to respond favorably to ivacaftor therapy. In addition to measurement of usual clinical outcomes (i.e. lung function, nutritional status), there is great interest on the impact on nontuberculous mycobacteria (NTM) airways infection.

Subjects will undergo sputum cultures at baseline and monthly during treatment, initially in the absence of anti-NTM therapy but with the intent to treat with antibiotics if there is persistence of the infection in cultures. Other clinical outcomes will include changes in sweat chloride, lung function and weight. Safety measures will include periodic assessment of liver enzymes. All serious and non-serious adverse events will be collected

Study Design

Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment

Conditions

Cystic Fibrosis

Intervention

Ivacaftor

Status

Enrolling by invitation

Source

Medical University of South Carolina

Results (where available)

View Results

Links

Published on BioPortfolio: 2016-10-18T02:08:21-0400

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PubMed Articles [1796 Associated PubMed Articles listed on BioPortfolio]

Islet Hormone and Incretin Secretion in Cystic Fibrosis Following 4-months of Ivacaftor Therapy.

Diabetes is associated with worse cystic fibrosis (CF) outcomes. The CFTR potentiator ivacaftor is suggested to improve glucose homeostasis in individuals with CF.

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Medical and Biotech [MESH] Definitions

An autosomal recessive genetic disease of the EXOCRINE GLANDS. It is caused by mutations in the gene encoding the CYSTIC FIBROSIS TRANSMEMBRANE CONDUCTANCE REGULATOR expressed in several organs including the LUNG, the PANCREAS, the BILIARY SYSTEM, and the SWEAT GLANDS. Cystic fibrosis is characterized by epithelial secretory dysfunction associated with ductal obstruction resulting in AIRWAY OBSTRUCTION; chronic RESPIRATORY INFECTIONS; PANCREATIC INSUFFICIENCY; maldigestion; salt depletion; and HEAT PROSTRATION.

A chloride channel that regulates secretion in many exocrine tissues. Abnormalities in the CFTR gene have been shown to cause cystic fibrosis. (Hum Genet 1994;93(4):364-8)

A strain of mice widely studied as a model for cystic fibrosis. These mice are generated from embryonic stem cells in which the CFTR (cystic fibrosis transmembrane conductance regulator) gene is inactivated by gene targeting. As a result, all mice have one copy of this altered gene in all their tissues. Mice homozygous for the disrupted gene exhibit many features common to young cystic fibrosis patients, including failure to thrive, meconium ileus, and alteration of mucous and serous glands.

A species of STENOTROPHOMONAS, formerly called Xanthomonas maltophilia, which reduces nitrate. It is a cause of hospital-acquired ocular and lung infections, especially in those patients with cystic fibrosis and those who are immunosuppressed.

Intestinal obstruction caused by congealed MECONIUM in the distal ILEUM and CECUM. It presents shortly after birth as a failure to pass meconium and frequently occurs in infants with CYSTIC FIBROSIS.

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