Idiopathic Pulmonary Fibrosis Clinical Trial
Official title:
Investigating the Role of the Coagulation Cascade in Idiopathic Pulmonary Fibrosis
The pathogenesis of idiopathic pulmonary fibrosis (IPF) is incompletely understood but recurrent epithelial injury occurs which evokes the coagulation cascade. Thrombin is produced as a result and is over expressed in IPF patients, so may be important in propagating disease activity. We aim to recruit patients with IPF and then complete FDG (18F-2-fluoro-2-deoxy-D-glucose fluorodeoxyglucose) PET (positron emission tomography) scans pre and post manipulation of the coagulation cascade to assess the role of this biological pathway in disease activity. Previous studies from our institution have demonstrated increased FDG avidity in the lungs of patients with IPF (assessed using FDG PET scans) but to date the cells and pathways responsible for this signal have not been identified and thus need further exploration.
Status | Not yet recruiting |
Enrollment | 12 |
Est. completion date | |
Est. primary completion date | August 2017 |
Accepts healthy volunteers | No |
Gender | Both |
Age group | 40 Years to 80 Years |
Eligibility |
Inclusion Criteria: - A diagnosis of IPF based on multi disciplinary meeting discussion following review of the clinical history, characteristic features on HRCT (high resolution CT scan) and/or usual interstitial pneumonia (UIP) histology. - Written informed consent obtained from subject. Exclusion Criteria: - Age <40 or >80 years - Renal impairment as defined by a creatinine clearance of <30 millilitres/min - Significant liver impairment with evidence of synthetic dysfunction - Any contraindication to anti-coagulation including previous life threatening or serious bleed or bleeding tendency. - Co-administration of any concomitant medications prohibited in full protocol. N-acetyl cysteine, prednisolone up to 10mg daily and pirfenidone are permitted. - Pregnant, breast feeding or unwilling to practice birth control during participation in the study (females of child bearing age). - Presence of a condition or abnormality that in the opinion of the investigator would compromise the safety of the patient of the quality of the data. |
Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Basic Science
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
---|---|
University College, London |
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Demonstrate a change in FDG (18F-2-fluoro-2-deoxy-D-glucose fluorodeoxyglucose) avidity | FDG avidity describes the degree of tissue uptake of the labelled glucose. It is a numerical continuous variable. It is calculated from the scan using several methods, manually on a workstation and using a mathematical modelling computer programme. The main number generated is called the standardised uptake value (SUV) and the higher the number the higher the metabolic activity in the area. The degree of activity will be quantified for each individual and compared with standard measures of disease activity i.e. lung function measures and quality of life questionnaires. For each individual the change in the SUV measure will be analysed from the scan performed before and then after manipulation of the coagulation cascade. | Approximately 4 weeks | No |
Secondary | Demonstrate changes in various coagulation factors | This patient group have demonstrated a hyper coagulable state in a number of previous studies. We will demonstrate this using blood tests prior to administration of dabigatran. The coagulation markers (a blood test, many used in standard clinical practice) will be repeated during treatment to demonstrate target engagement. | Approximately 4 weeks | No |
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