- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04750447
Safety and Efficacy of an Ab Interno Gelatin Stent (XEN63) With or Without Mitomycin C
Study Overview
Detailed Description
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: Ronaldo Santiago, MD
- Phone Number: 267 905-4563937
- Email: ronaldo.santiago@prismeye.ca
Study Contact Backup
- Name: Ramzi Jumaa, MD
- Phone Number: 267 905-456-3937
- Email: ramzi3@gmail.com
Study Locations
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Ontario
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Oakville, Ontario, Canada, L6H 0J8
- Recruiting
- Prism Eye Institute
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Contact:
- Ronaldo Santiago, MD
- Phone Number: 267 (905) 456-3937
- Email: ike.research@prismeye.ca
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Patients aged 30-90 Primary open angle glaucoma on maximum tolerated medical therapy Going to receive XEN63 ab interno gelatin stent with or without MMC in study eye ± cataract surgery
Exclusion Criteria:
- Other forms of glaucoma
- Previous glaucoma shunt/valve in the target quadrant of study eye
- Presence of conjunctival scarring, prior conjunctival surgery or other conjunctival pathologies (e.g., pterygium) in the target quadrant of study eye
- Active inflammation (e.g., blepharitis, conjunctivitis, keratitis, uveitis), active iris neovascularization or neovascularization of the iris within six months of the surgical date
- Presence of anterior chamber intraocular lens, intraocular silicone oil, vitreous present in the anterior chamber, impaired episcleral venous drainage (e.g., Sturge-Weber or nanophthalmos or other evidence of elevated venous pressure)
- Known or suspected allergy or sensitivity to drugs required for the surgical procedure or any of the device components (e.g., porcine products or glutaraldehyde), history of dermatologic keloid formation.
- Prior CPC, corneal graft (PKP, DALK, DSAEK, DMEK)
- Other forms of combined surgery (cornea, retina) besides cataract surgery
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Open Angle Glaucoma
Patients aged 30-90 Primary open angle glaucoma on maximum tolerated medical therapy Going to receive XEN63 ab interno gelatin stent with or without MMC in study eye ± cataract surgery
|
The Xen gelatin microstent (Allergan, CA, USA) is a 6mm gelatin tube used in microinvasive glaucoma surgery (MIGS) to create a bleb.
A bleb is a fluid filled blister located in the tissue covering the white portion of the eye (the conjunctiva) created after glaucoma surgery.
The bleb allows the eye pressure (intraocular pressure - IOP) to be lowered by bypassing the natural pathways by which the fluid called aqueous leaves the eye and redirecting it towards the bleb to be absorbed by other pathways.
Amongst the main advantages of this device is the ability to create a bleb without disrupting tissue unlike other methods of glaucoma surgery (e.g., trabeculectomy).
This decreases the amount of wound healing and scarring, and potentially limiting bleb failure.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Complete Success
Time Frame: 1 month post op to post op month 12
|
Intraocular Pressure: 6-17 mmHg and on no glaucoma medications at least 1 month after surgery with no reoperation using the Goldmann Applanation Tonometer..
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1 month post op to post op month 12
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Absence of complications
Time Frame: post op day 1 to post op month 12
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Absence of the following complications as reported during slitlamp examination: i. Starting after POM1: shallow AC w/ iridocorneal touch, any hyphema, corneal edema, choroidal effusion, malignant glaucoma, dellen/non-healing epithelial defect, ptosis, diplopia. ii. At any point: additional glaucoma surgery, loss of light perception vision, vitreous hemorrhage, ≥2mm hyphema, hypotony maculopathy, implant migration/blockage/exposure/extrusion, macular edema, choroidal effusion/hemorrhage requiring drainage, suprachoroidal hemorrhage, retinal detachment, blebitis/endophthalmitis |
post op day 1 to post op month 12
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Qualified Success
Time Frame: post op month 1 to post op month 12
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a. 'Complete success' criteria except that Intraocular Pressure (IOP) can be above IOP thresholds, and then reduced to within the 'Complete criteria' by medications or laser in 3 visits or less as measured by Goldmann Applanation Tonometry.
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post op month 1 to post op month 12
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Iqbal Ahmed, MD, Prism Eye Institute
Publications and helpful links
General Publications
- Conlon R, Saheb H, Ahmed II. Glaucoma treatment trends: a review. Can J Ophthalmol. 2017 Feb;52(1):114-124. doi: 10.1016/j.jcjo.2016.07.013. Epub 2016 Nov 17.
- Green W, Lind JT, Sheybani A. Review of the Xen Gel Stent and InnFocus MicroShunt. Curr Opin Ophthalmol. 2018 Mar;29(2):162-170. doi: 10.1097/ICU.0000000000000462. Review.
- Schlenker MB, Gulamhusein H, Conrad-Hengerer I, Somers A, Lenzhofer M, Stalmans I, Reitsamer H, Hengerer FH, Ahmed IIK. Efficacy, Safety, and Risk Factors for Failure of Standalone Ab Interno Gelatin Microstent Implantation versus Standalone Trabeculectomy. Ophthalmology. 2017 Nov;124(11):1579-1588. doi: 10.1016/j.ophtha.2017.05.004. Epub 2017 Jun 7. Erratum In: Ophthalmology. 2018 Mar;125(3):463.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1035
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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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