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Giant Cell Arteritis and PET Scan (GAPS) Study

Giant Cell Arteritis Clinical Trial

Official title:
Giant Cell Arteritis and PET Scan (GAPS) Study - Improving the Diagnosis and Prognostication of Giant Cell Arteritis Through the Novel Use of Positron Emission Tomography and Immune Biomarkers

Clinical Trial Summary

Giant cell arteritis (GCA) is a medium to large vessel vasculitis with a predilection for the superficial cranial and intrathoracic arteries. Diagnosing the condition and predicting which patients will develop large vessel complications remains a challenge. There are limitations with temporal artery biopsy, magnetic resonance angiography and ultrasound of temporal arteries and American College of Rheumatology classification criteria.

Positron emission tomography (PET) has been shown to be a useful modality in detecting inflammation in large intra-thoracic vessels but previously has not been able to accurately detect FDG uptake in the superficial cranial arteries due to poor spatial resolution. Newer scanners can perform finer cuts of the head and can detect uptake in these arteries.

This study has three main components:

1. Cross sectional study assessing the accuracy of PET uptake in the superficial cranial and intrathoracic arteries of suspected GCA patients for the diagnosis of GCA

2. Cohort study assessing the prognostic implication of FDG aortic uptake on aortic diameter at 24 months

3. Cohort study assessing the Th1 and Th17 cytokine profile in patients with and without FDG PET uptake at 0, 6 and 24 months

Clinical Trial Description

n/a

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02771483
Study type Observational
Source Royal North Shore Hospital
Contact
Status Completed
Phase
Start date May 15, 2016
Completion date January 28, 2020
View Details
See also
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