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Trial registered on ANZCTR


Registration number
ACTRN12618000589280
Ethics application status
Approved
Date submitted
20/09/2017
Date registered
17/04/2018
Date last updated
17/04/2018
Type of registration
Retrospectively registered

Titles & IDs
Public title
Platelet Activation in Central Retinal Vein Occlusion
Scientific title
Platelet Activation in Central Retinal Vein Occlusion
Secondary ID [1] 292932 0
Nil Known
Universal Trial Number (UTN)
U1111-1202-3995
Trial acronym
CRVO
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Central Retinal Vein Occlusion 304816 0
Condition category
Condition code
Eye 304119 304119 0 0
Diseases / disorders of the eye
Blood 304120 304120 0 0
Other blood disorders

Intervention/exposure
Study type
Observational
Patient registry
False
Target follow-up duration
Target follow-up type
Description of intervention(s) / exposure
Blood sampled will be collected in patients with acute cenral retinal vein occlusion (CRVO). Platellet activation will be assessed. Patients with CRVO will be treated with conventional therapy. The observation period commences at the same time as treatment. (No multiple timepoints). Duration of observation is 1 month.
Intervention code [1] 299165 0
Not applicable
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.
Control group
Active

Outcomes
Primary outcome [1] 303438 0
Mean platelet volume count will be assessed using serum samples.
Timepoint [1] 303438 0
1 month post enrolment. These participants will be followed-up for 1 month
Primary outcome [2] 303439 0
platelet distribution width count will be assessed using serum samples
Timepoint [2] 303439 0
1 month post enrolment. These participants will be followed-up for 1 month
Primary outcome [3] 303440 0
Plateletcrit count will be assessed using serum samples.
Timepoint [3] 303440 0
1 month post enrolment. These participants will be followed-up for 1 month
Secondary outcome [1] 338939 0
None
Timepoint [1] 338939 0
None

Eligibility
Key inclusion criteria
We included the CRVO patients with posterior segment involvement.. The diagnosis of CRVO will reached using fundus photography, fluorescein angiography, and optical coherence tomography. Patients and healthy volunteers that were matched for age and gender included in this study
Minimum age
50 Years
Maximum age
80 Years
Gender
Both males and females
Can healthy volunteers participate?
Yes
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

Study design
Purpose
Screening
Duration
Longitudinal
Selection
Defined population
Timing
Prospective
Statistical methods / analysis
We require about 60 subjects (30 subjects for CRVO group and 30 subjects for control group). Differences between the two groups for thrombophilic parameters will evaluated using by a t-test according to Bonferroni procedures for multiple comparisons. The level of significance was set at <0.05.

For a study power of 80%, we determined 30 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.

Recruitment
Recruitment status
Recruiting
Date of first participant enrolment
Anticipated
Actual
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
Sample size
Target
Accrual to date
Final
Recruitment outside Australia
Country [1] 9222 0
Turkey
State/province [1] 9222 0

Funding & Sponsors
Funding source category [1] 297561 0
Hospital
Name [1] 297561 0
Ankara Ulucanlar Eye Education and research hospital.
Address [1] 297561 0
Ulucanlar cd. no:59 06230 Altindag/Ankara/Turkey
Country [1] 297561 0
Turkey
Primary sponsor type
Hospital
Name
Ankara Ulucanlar Eye Education and research hospital.
Address
Ulucanlar cd. no:59 06230 Altindag/Ankara/Turkey
Country
Turkey
Secondary sponsor category [1] 296572 0
None
Name [1] 296572 0
None
Address [1] 296572 0
None
Country [1] 296572 0

Ethics approval
Ethics application status
Approved
Ethics committee name [1] 298656 0
Ankara Numune Training and Research Hospital
Ethics committee address [1] 298656 0
Hacettepe, Talatpasa Blv No:44, 06100 Altindag/Ankara
Ethics committee country [1] 298656 0
Turkey
Date submitted for ethics approval [1] 298656 0
03/07/2017
Approval date [1] 298656 0
17/07/2017
Ethics approval number [1] 298656 0
211605

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 central retinal vein occlusion (CRVO) in comparison to those in healthy adults as controls.
Design: A prospective case control study
Participants and Controls: 30 patients within the CRVO (Group 1) and 30 age-and sex-matched healthy controls will included into the study (Group 2).
Methods: All patients and control subjects will undergo complete ophthalmologic evaluation. MPV, PDW, and PCT were measured in the studied groups.
Main Outcome Measures: Alterations in platelet activation parameters.
The mean level of MPV PDW and PCT value in Group 1 and in Group 2 will determined.
Trial website
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 77786 0
Prof Mehmet CITIRIK
Address 77786 0
SB Ankara Ulucanlar Eye Education and Research Hospital.
Ulucanlar Cad. No: 59 06230 ALTINDAG/ANKARA/TURKEY
Country 77786 0
Turkey
Phone 77786 0
+903123126261
Fax 77786 0
+903123124827
Email 77786 0
mcitirik@hotmail.com
Contact person for public queries
Name 77787 0
Prof Mehmet CITIRIK
Address 77787 0
SB Ankara Ulucanlar Eye Education and Research Hospital.
Ulucanlar Cad. No: 59 06230 ALTINDAG/ANKARA/TURKEY
Country 77787 0
Turkey
Phone 77787 0
+903123126261
Fax 77787 0
+903123124827
Email 77787 0
mcitirik@hotmail.com
Contact person for scientific queries
Name 77788 0
Prof Mehmet CITIRIK
Address 77788 0
SB Ankara Ulucanlar Eye Education and Research Hospital.
Ulucanlar Cad. No: 59 06230 ALTINDAG/ANKARA/TURKEY
Country 77788 0
Turkey
Phone 77788 0
+903123126261
Fax 77788 0
+903123124827
Email 77788 0
mcitirik@hotmail.com

No information has been provided regarding IPD availability
Summary results
No Results