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Trial registered on ANZCTR
Registration number
ACTRN12611000336987
Ethics application status
Approved
Date submitted
30/03/2011
Date registered
31/03/2011
Date last updated
29/02/2012
Type of registration
Prospectively registered
Titles & IDs
Public title
Prospective study into the effect of an intraocular injection of a steroid in the prevention of Glaucoma drainage surgery failure after cataract surgery
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Scientific title
Prospective randomised trial of intravitreal triamcinolone in the prevention of trabeculectomy failure after cataract surgery
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Secondary ID [1]
259882
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Nil
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Universal Trial Number (UTN)
U1111-1120-4139
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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:
Glaucoma
265474
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Glaucoma filtration surgery failure after cataract surgery
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Condition category
Condition code
Eye
265628
265628
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0
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Diseases / disorders of the eye
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Surgery
265635
265635
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0
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Surgical techniques
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
A single injection of intravitreal injection of Triamcinolone acetonide (4mg in 0.1ml) in conjunction with 5-Fluorouracil (5mg in 0.1ml) injected superior to the Glaucoma filtration bleb
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Intervention code [1]
264305
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Treatment: Drugs
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Intervention code [2]
264312
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Prevention
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Comparator / control treatment
5-Fluorouracil injected superior to the glaucoma filtration bleb
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Control group
Active
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Outcomes
Primary outcome [1]
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Percentage of participants with intraocular pressure (IOP) >6mmHg - <18mmHg with no glaucoma medications at 12 months post injection.
This will be assessed using Goldmann applanation tonometry
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Assessment method [1]
262414
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Timepoint [1]
262414
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12 months
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Secondary outcome [1]
273736
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IOP >6mmmHg<21mmHg with or without topical IOP lowering medication.
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Assessment method [1]
273736
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Timepoint [1]
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12 months
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Secondary outcome [2]
273737
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Bleb vascularity and morphology (graded by masked observer according to Moorfields bleb grading scheme 3)
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Assessment method [2]
273737
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Timepoint [2]
273737
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12 months
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Secondary outcome [3]
273738
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Number of post-operative 5-FU injections
This will be assessed by data linkage to patient medical records
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Assessment method [3]
273738
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Timepoint [3]
273738
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12 months
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Eligibility
Key inclusion criteria
Patients with a functioning glaucoma filtration bleb who are due to undergo cataract surgery with intra-ocular lens implantation.
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Minimum age
40
Years
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Maximum age
100
Years
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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
Active or recent bleb leak, known hypersensitivity to 5-FU or Triamcinolone, only eye, active or recent blebitis or endophthalmitis.Previous vitrectomy. Previous retinal detachment or tear. Inability to give informed consent. Inability to be safely administeedr an intravitreal injection.
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Study design
Purpose of the study
Prevention
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Computer randomisation at time of enrollment into trial
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Computer random number generator
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
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Intervention assignment
Parallel
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Other design features
Combination of safety and efficacy
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Phase
Phase 4
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Type of endpoint/s
Safety/efficacy
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Statistical methods / analysis
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Recruitment
Recruitment status
Recruiting
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Date of first participant enrolment
Anticipated
1/06/2011
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Actual
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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
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Sample size
Target
110
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
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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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Royal Victorian Eye and Ear
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Address [1]
264768
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32 Gisborne Street
East Melbourne
VIC 3002
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Country [1]
264768
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Australia
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Primary sponsor type
Hospital
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Name
Royal Victorian Eye and Ear
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Address
32 Gisborne Street
East Melbourne
VIC 3002
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Country
Australia
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Secondary sponsor category [1]
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None
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Name [1]
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Address [1]
263885
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Country [1]
263885
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
266745
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Ethics committee address [1]
266745
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Ethics committee country [1]
266745
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Australia
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Date submitted for ethics approval [1]
266745
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11/04/2011
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Approval date [1]
266745
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Ethics approval number [1]
266745
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Summary
Brief summary
Trabeculectomy surgery for Glaucoma establishes a connection between the inside of the eye and the subconjunctival space which lies just below the surface of the eye. Flow of fluid through this connection forms a subconjunctival blister known as a bleb. Aqueous humor (fluid inside the front of the eye )is absorbed from the bleb into the blood stream. A significant casue of failure of trabeculectomy is scarring of the bleb. If the bleb develops an excessive amount of scar tissue then fluid is prevented from exiting and the eye pressure is increased. Cataract surgery has been shown in research trials to increase the risk of trabeculectomy failure. Control of postoperative scar formation after cataract surgery is a significant challenge in the surgical management of glaucoma in patients who have had previous Trabeculectomy surgery. Current practice is to use topical steroids and antiscarring agents such as 5-fluorouracil (5-FU). Although the use of 5-FU is widespread, scar tissue remains a problem in many patients and treatment is associated with side effects including wound leaks and disruption of the ocular surface. Active scarring is associated with inflammation. Triamcinolone is a synthetic corticosteroid that inhibits the inflammatory process and may therefore reduce scar formation. Injection of triamcinolone into the vitreous jelly of the eye has been widely used as a treatment for various diabetic and inflammatory conditions which are unresponsive to topical corticosteroids. It has been used as a mono-therapy and co-therapy for various back of eye conditions, and is also indicated for visualisation during vitrectomy.
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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
32409
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Address
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Country
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Phone
32409
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Fax
32409
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Email
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Contact person for public queries
Name
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Dan Nguyen
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Address
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Royal Victorian Eye & Ear Hospital
32 Gisborne Street
East Melbourne
VIC 3002
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Country
15656
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Australia
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Phone
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+61 3 9929 8666
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Fax
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Email
15656
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[email protected]
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Contact person for scientific queries
Name
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Dan Nguyen
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Address
6584
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Royal Victorian Eye & Ear Hospital
32 Gisborne Street
East Melbourne
VIC 3002
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Country
6584
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Australia
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Phone
6584
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+61 3 9929 8666
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Fax
6584
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Email
6584
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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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