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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT02771483
Registration number
NCT02771483
Ethics application status
Date submitted
9/05/2016
Date registered
13/05/2016
Titles & IDs
Public title
Giant Cell Arteritis and PET Scan (GAPS) Study
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Scientific 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
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Secondary ID [1]
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RESP/16/44
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Giant Cell Arteritis
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Condition category
Condition code
Musculoskeletal
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Other muscular and skeletal disorders
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Inflammatory and Immune System
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Other inflammatory or immune system disorders
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Cardiovascular
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Diseases of the vasculature and circulation including the lymphatic system
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Neurological
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Other neurological disorders
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Inflammatory and Immune System
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0
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Autoimmune diseases
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Intervention/exposure
Study type
Observational
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Patient registry
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
Suspected GCA (GCA final diagnosis) -
Suspected GCA (alternative final diagnosis) -
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Diagnostic accuracy of FDG uptake in the superficial cranial or intrathoracic arteries for the diagnosis of temporal artery biopsy proven GCA amongst patients with suspected GCA
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Assessment method [1]
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Timepoint [1]
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Baseline
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Secondary outcome [1]
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Difference in aortic diameter at 24 months between patients with and without PET scan aortic uptake at time 0.
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Assessment method [1]
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Timepoint [1]
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24 months
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Secondary outcome [2]
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Difference in Th1 and Th17 axis cytokines in patients with and without thoracic large vessel PET uptake at 0, 6 and 24 months
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Assessment method [2]
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Timepoint [2]
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24 months
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Secondary outcome [3]
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Prevalence of varicella zoster virus antigen and DNA in temporal artery biopsy GCA specimens
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Assessment method [3]
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Timepoint [3]
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24 months
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Secondary outcome [4]
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Prevalence of acute varicella zoster IgM serology positivity in biopsy confirmed GCA patients
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Assessment method [4]
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Timepoint [4]
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24 months
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Secondary outcome [5]
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Difference in combined vascular events between GCA patients with and without thoracic large vessel PET uptake at 0, 6 and 24 months
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Assessment method [5]
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Timepoint [5]
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24 months
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Secondary outcome [6]
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Difference in temporal artery histology between GCA patients with and without thoracic large vessel PET uptake at 0 months
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Assessment method [6]
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Timepoint [6]
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Baseline
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Secondary outcome [7]
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Difference in temporal artery histology between GCA patients with and without temporal artery PET uptake at 0 months
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Assessment method [7]
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Timepoint [7]
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Baseline
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Eligibility
Key inclusion criteria
* Rheumatologist, neurologist or ophthalmologist suspect diagnosis of GCA
* Age > 50
* Meet at least 2 of 1990 American College of Rheumatology classification criteria for GCA
1. Age >= 50
2. ESR >= 50
3. New onset localised headache
4. Temporal artery abnormality (tenderness or decreased pulsation)
5. Positive biopsy (will not be available at time of enrolment)
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Minimum age
50
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Corticosteroid therapy for > 72 hours before first PET scan
* Prolonged corticosteroid therapy (> 1 week) for another indication in past 6 months
* History of vasculitis or connective tissue disease
* Active malignancy
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Study design
Purpose
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Duration
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Selection
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Timing
Prospective
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
15/05/2016
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
28/01/2020
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Sample size
Target
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Accrual to date
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Final
64
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Recruitment in Australia
Recruitment state(s)
NSW
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Recruitment hospital [1]
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Royal North Shore Hospital - St Leonards
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Recruitment postcode(s) [1]
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2065 - St Leonards
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Funding & Sponsors
Primary sponsor type
Other
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Name
Royal North Shore Hospital
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief 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
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Trial website
https://clinicaltrials.gov/study/NCT02771483
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Trial related presentations / publications
Sammel AM, Hsiao E, Schembri G, Nguyen K, Brewer J, Schrieber L, Janssen B, Youssef P, Fraser CL, Bailey E, Bailey DL, Roach P, Laurent R. Diagnostic Accuracy of Positron Emission Tomography/Computed Tomography of the Head, Neck, and Chest for Giant Cell Arteritis: A Prospective, Double-Blind, Cross-Sectional Study. Arthritis Rheumatol. 2019 Aug;71(8):1319-1328. doi: 10.1002/art.40864. Epub 2019 Jun 12.
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Public notes
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Contacts
Principal investigator
Name
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Anthony M Sammel, MBBS
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Address
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Royal North Shore Hospital, St Leonards, Australia
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
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No/undecided IPD sharing reason/comment
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT02771483