18FDG-PET Imaging to Detect Changes in Airways Inflammation in Cystic Fibrosis Patients
The purpose of this study is to determine if 18Fluorodeoxyglucose (FDG) Positron Emission Tomography (PET) imaging can detect changes in airways inflammation in Cystic Fibrosis (CF) patients after treatment for a pulmonary exacerbation.
|Study Design:||Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
|Official Title:||A Pilot Study of 18FDG-PET Imaging to Detect Changes in Airways Inflammation in Cystic Fibrosis Patients After Treatment for a Pulmonary Exacerbation|
- Change in airways inflammation detected by 18FDG -PET from baseline [ Time Frame: Measured at end of treatment (day 14) ] [ Designated as safety issue: No ]
- Correlation of pre and post 18FDG-PET data with lung function (FEV1, FEF 25-75 and FVC), sputum neutrophil count and sputum free elastase [ Time Frame: Measured at end of treatment (day 14) ] [ Designated as safety issue: No ]
|Study Start Date:||April 2008|
|Study Completion Date:||April 2010|
|Primary Completion Date:||April 2010 (Final data collection date for primary outcome measure)|
The administered intravenous dose of 18-FDG is 0.14mCi/kg up to a maximum of 10mCi before each PET imaging scan is performed.
Neutrophils play a key role in the pathogenesis of CF lung disease. We know that neutrophilic inflammation is related to a decline in pulmonary function. Therefore, early anti-inflammatory intervention is an opportunity to slow this irreversible pulmonary destruction. However, the development of sensitive, non-invasive diagnostic tools of airways inflammation is essential to the study and implementation of anti-inflammatory therapies. Our current armentarium of measures of airways inflammation is limited. BAL is invasive and not clinically acceptable as a tool for the serial measurement of inflammation. Sputum samples are highly variable and not reliable.
18FDG-PET is a promising tool because it is non invasive, has been shown to quantify the amount and location of neutrophilic inflammation and has the potential to be used to track inflammation over time. Therefore, the goal of this research study is to evaluate the ability of 18FDG -PET imaging to detect changes in airways inflammation in CF patients in response to conventional treatment for a pulmonary exacerbation
|The Hospital for Sick Children|
|Toronto, Ontario, Canada|
|Principal Investigator:||Felix Ratjen, MD||The Hospital for Sick Children|