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Trial registered on ANZCTR
Registration number
ACTRN12616001178437
Ethics application status
Approved
Date submitted
30/06/2016
Date registered
26/08/2016
Date last updated
26/08/2016
Type of registration
Retrospectively registered
Titles & IDs
Public title
Platelet Parameters in Behcet's Disease
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Scientific title
Platelet Parameters in Ocular Behcet's Disease With Posterior Segment Involvement
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Secondary ID [1]
289578
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Nil known
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Universal Trial Number (UTN)
U1111-1184-8290
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Trial acronym
Ocular BD
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Behcet disease
299316
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Condition category
Condition code
Eye
299309
299309
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0
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Diseases / disorders of the eye
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Inflammatory and Immune System
299535
299535
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0
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Other inflammatory or immune system disorders
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Intervention/exposure
Study type
Observational
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Patient registry
True
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Target follow-up duration
1
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Target follow-up type
Months
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Description of intervention(s) / exposure
Blood sampled will be collected in patients with inactive and active stage of Behcet disease. Patients with active disease will be treated with conventional therapy. Duration of observation is 1 month.
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Intervention code [1]
295180
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Not applicable
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Comparator / control treatment
healthy adult subjects serving as controls with no history of systemic or ocular disease. Blood samples are collected once in these participants.
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Control group
Active
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Outcomes
Primary outcome [1]
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At least 25 ocular BD patients with posterior segment involvement in the active period.
Mean platelet volume count will be assessed using serum samples.
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Assessment method [1]
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Timepoint [1]
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1 month post enrolment. Serum samples collected in active BD patients at 1 month.
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Primary outcome [2]
299014
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platelet distribution width count will be assessed using serum samples.
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Assessment method [2]
299014
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Timepoint [2]
299014
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1 month post enrolment. Serum samples collected in active BD patients at 1 month.
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Primary outcome [3]
299015
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Platelletcrit count will be assessed using serum samples.
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Assessment method [3]
299015
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Timepoint [3]
299015
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1 month post enrolment. Serum samples collected in active BD patients at 1 month.
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Secondary outcome [1]
325233
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None
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Assessment method [1]
325233
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Timepoint [1]
325233
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None
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Eligibility
Key inclusion criteria
We included the active ocular Behcet’s disease (BD) patients with posterior segment involvement.. The diagnosis of BD will reached according to the criteria of the International Study Group for Behcet’s Disease. Subjects with at least 2 months of lesion-free period were regarded in the inactive disease period, and subjects with any oral, skin, and/or genital lesions will regarded as in the active disease period. Patients and healthy volunteers that were matched for age and gender included in this study
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Minimum age
20
Years
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Maximum age
50
Years
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
Patients and healthy volunteers who were on any kind of medication including corticosteroid and immunosuppressive therapy, who had smoking (smoke more than 1 cigarette per day) and drinking ( >1 standard drink per week) habits, or who had history of systemic and ocular disease will not included in the study
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Study design
Purpose
Screening
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Duration
Longitudinal
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Selection
Defined population
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Timing
Prospective
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Statistical methods / analysis
We require about at least 25 participants per three groups (Active, inactive, control). Differences among the three groups for thrombophilic parameters will evaluated using one-way ANOVA analysis, where applicable. Bonferroni test will used as post hoc test after one-way ANOVA. The level of significance was set at <0.05.
For a study power of 80%, we determined 25 subjects will enough to test all parameters. The power of the test is pathfinder to know the probability that the test will give the right result when there is a real effect. The power of the significance test is the same thing as the sensitivity of a screening test. The effect size was 0.5.
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Recruitment
Recruitment status
Recruiting
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Date of first participant enrolment
Anticipated
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Actual
1/07/2016
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Date of last participant enrolment
Anticipated
31/08/2016
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Actual
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Date of last data collection
Anticipated
30/09/2016
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Actual
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Sample size
Target
75
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
7989
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Turkey
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State/province [1]
7989
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Turkey
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Funding & Sponsors
Funding source category [1]
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Hospital
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Name [1]
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Ankara Ulucanlar Eye Education and research hospital.
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Address [1]
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Ulucanlar cd. no:59 06230 Altindag/Ankara/Turkey
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Country [1]
293966
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Turkey
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Primary sponsor type
Hospital
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Name
SB Ankara Ulucanlar Eye Education and Research Hospital
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Address
Ulucanlar Cad. No: 59 06230 ALTINDAG/ANKARA/TURKEY
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Country
Turkey
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Secondary sponsor category [1]
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None
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Name [1]
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None
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Address [1]
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None
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Country [1]
292780
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Ankara Numune Training and Research Hospital
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Ethics committee address [1]
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Hacettepe, Talatpasa Blv No:44, Altindag/Ankara
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Ethics committee country [1]
295381
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Turkey
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Date submitted for ethics approval [1]
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01/04/2016
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Approval date [1]
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15/04/2016
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Ethics approval number [1]
295381
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181175
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Summary
Brief summary
Purpose: To search platelet activation via detecting three important platelet activation parameters; Mean Platelet Volume (MPV), Platelet Distribution Width (PDW), and Plateletcrit (PCT) in patients with ocular Behcet's disease (BD) in comparison to those in healthy adults as controls. Design: A prospective case control study Participants and Controls: Twenty-five patients within the active period of the ocular BD with posterior segment involvement (Group 1), 25 patients within the inactive period of the ocular BD with posterior segment involvement (Group 2) and 25 age-and sex-matched healthy controls will included into the study (Group 3). Methods: All patients and control subjects will undergo complete ophthalmologic evaluation. MPV, PDW, and PCT will measure in the studied groups. Main Outcome Measures: Alterations in platelet activation parameters. Results: The mean level of MPV value in Group 1, in Group 2, and in Group 3 will determined. Mean serum level of PDW in three groups will determined. Mean serum PCT value in Group 1, in Group 2, and in Group 3 will determined. MPV, PDW, and PCT levels can be significantly altered in ocular BD patients. Conclusion: Platelet activation reflected by MPV, PDW, and PCT may have an impact on the genesis of vessel occlusion in ocular BD with posterior segment involvement. The results may be important for the clinical management of patients with ocular BD in everyday clinical practice since those platelet parameters are routinely detected in complete blood count analyses.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Prof Mehmet CITIRIK
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Address
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SB Ankara Ulucanlar Eye Education and Research Hospital.
Ulucanlar Cad. No: 59 06230 ALTINDAG/ANKARA/TURKEY
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Country
67058
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Turkey
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Phone
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+903123126261
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Fax
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+903123124827
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Email
67058
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[email protected]
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Contact person for public queries
Name
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Ali Keles
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Address
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SB Ankara Ulucanlar Eye Education and Research Hospital.
Ulucanlar Cad. No: 59 06230 ALTINDAG/ANKARA/TURKEY
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Country
67059
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Turkey
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Phone
67059
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+903123126261
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Fax
67059
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+903123124827
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Email
67059
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[email protected]
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Contact person for scientific queries
Name
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Mehmet CITIRIK
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Address
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SB Ankara Ulucanlar Eye Education and Research Hospital.
Ulucanlar Cad. No: 59 06230 ALTINDAG/ANKARA/TURKEY
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Country
67060
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Turkey
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Phone
67060
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+903123126261
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Fax
67060
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+903123124827
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Email
67060
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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