- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01912638
Trabeculectomy With Ologen Collagen Implant vs Trabeculectomy With Provisc in Steroid Induced Glaucoma
Comparative Study of the Efficacy and Safety of Ologen Collagen Implant Versus Cohesive Viscoelastic in Trabeculectomy Performed for Steroid Induced Glaucoma
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Steroid induced glaucoma is a well known and widely described disastrous clinical condition. However the subject of selection of most effective and safe treatment modality is still being discussed.
Sihota R et al reported that 26.5% cases required surgical treatment to control IOP. Unfortunately survival rate of successful blebs in 10 years after trabeculectomy varies from 40% to 60%. Anti-fibrotic agent MMC as adjunct to filtration surgery was used to prevent postoperative scarring that could compromise surgical success of trabeculectomy. Additional use of MMC in trabeculectomy leads to low final IOP but could be associated with such complications as cataract formation, intraocular toxicity, avascular filtering blebs, wound leakage, subsequent blebitis and endophthalmitis. Tissue-engineered biodegradable and biocompatible implant Ologen® Collagen Matrix may be used as an alternative to MMC. Ologen® is CE Mark and FDA approved artificial porcine extracellular matrix for modulating wound healing. Ologen® has been tested in animal models and has triple action:
- prevent the collapse of the subconjunctival space;
- guides the fibroblast to grow through the matrix pores thus preventing scar formation;
- may act as an aqueous reservoir (avoids post-op hyperfiltration and shallow anterior chamber).
The filtering blebs scoring was performed by using Moorfields Bleb Grading System and Visante anterior segment optical coherence tomography.
Study Type
Enrollment (Actual)
Phase
- Phase 2
- Phase 1
Contacts and Locations
Study Locations
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Baku, Azerbaijan, AZ1114
- National Centre of Ophthalmology named after academician Zarifa Aliyeva
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Age > 16 years (inclusive)
- Patients with medically uncontrolled steroid induced glaucoma
Exclusion Criteria:
- Primary open angle glaucoma, angle-closure glaucoma, post-traumatic, uveitic, neovascular, or dysgenetic glaucoma
- Known allergic reaction to porcine collagen
- Preliminary conjunctival damage (trauma, vitreo-retinal surgery, previous glaucoma or strabismus surgery, etc)
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Experimental: Implantation of Ologen in trabeculectomy
Ologen Collagen Matrix is implanted in primary limbal-based trabeculectomy.
It should be placed on the top of the loosely-sutured scleral flap before suturing of the conjunctiva thus preventing the collapse of the subconjunctival space.
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Ologen is a porous collagen-glycosaminoglycan matrix that decrease early postoperative scarring after penetrating anti-glaucomatous surgery by randomized collagen deposition and microcyst formation.
Implantation of Ologen Collagen Matrix in trabeculectomy was performed.
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Active Comparator: Provisc in trabeculectomy
Provisc is used in primary limbal-based trabeculectomy.
At the end of the surgery cohesive viscoelastic (Provisc) is injected under the scleral flap to prevent early hypotony.
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Provisc is an cohesive viscoelastic.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Intraocular Pressure (IOP)
Time Frame: 2 years
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The absolute success was defined as an IOP less than 21 mmHg with no glaucoma medications. Follow-up visits were and will arranged at 1 and 2 first weeks, then every month during first 6 months, then every 3 months during 2.5 years after surgery. |
2 years
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Postoperative complications
Time Frame: 2 years
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Complications were defined as follows: hypotony,shallow anterior chamber,serous or hemorrhagic choroidal detachment, hyphema,anterior chamber inflammation,persistent hypotonus maculopathy,corneal epithelial toxicity, "snuff" syndrome,blebitis or endophthalmitis,formation of Tenon's cyst.
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2 years
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Corrected distance visual acuity (CDVA)
Time Frame: 2 years
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2 years
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Appearance of the filtering bleb (FB)
Time Frame: 2 years
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2 years
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Collaborators and Investigators
Collaborators
Investigators
- Study Director: Elmar Kasimov, Professor, Director of National Centre of Ophthalmology
- Principal Investigator: Fidan Aghayeva, MD, Glaucoma consultant at National Centre of Ophthalmology
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- Trab-Olo-SG
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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