XEN-45 Gel Stent Versus Trabeculectomy in Glaucoma: Gold-Standard Pathway Study (GPS) (XEN GPS)

June 27, 2022 updated by: Allergan
The purpose of this study is to compare the safety and efficacy of XEN-45 to trabeculectomy in participants with open angle glaucoma refractory to topical medical therapy.

Study Overview

Status

Completed

Conditions

Detailed Description

This is a multi-center, randomized, parallel group, prospective, open-label clinical trial to evaluate the ability of XEN-45 to reduce intraocular pressure (IOP) and reduce the amount of topical IOP-lowering medications in participants poorly controlled on topical therapy. The planned study duration is 12 months. Participants were to be screened for enrollment and eligible candidates were to be approached to ascertain interest in study participation. Eligible participants were to be randomized 2:1; resulting in approximately 95 eyes implanted with XEN-45 and 44 eyes received trabeculetomy by study end.

Study Type

Interventional

Enrollment (Actual)

158

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Arkansas
      • Fayetteville, Arkansas, United States, 72704
        • Vold Vision /ID# 233677
    • California
      • Arcadia, California, United States, 91007
        • Retina Institute of California /ID# 233692
      • Culver City, California, United States, 90232
        • Angeles Eye Institute /ID# 233632
      • Los Angeles, California, United States, 90027
        • Cha Medical Group Pc /Id# 233649
      • Sacramento, California, United States, 95815
        • Grutzmacher Lewis and Sierra Inc. /ID# 233654
    • Colorado
      • Denver, Colorado, United States, 80291-0238
        • University of Colorado Denver /ID# 233676
    • District of Columbia
      • Washington, District of Columbia, United States, 20060
        • Howard University Hospital /ID# 233615
    • Florida
      • Hollywood, Florida, United States, 33020
        • Eye Surgery Associates /ID# 233638
      • Weston, Florida, United States, 33326
        • Specialty Retina Center /ID# 233628
    • Georgia
      • Atlanta, Georgia, United States, 30342
        • Georgia Eye Partners /ID# 233655
      • Roswell, Georgia, United States, 30076
        • Coastal Research Associates /ID# 233575
    • Hawaii
      • Honolulu, Hawaii, United States, 96814
        • Tyrie Lee Jenkins MD Inc. /ID# 233674
    • Illinois
      • Peoria, Illinois, United States, 61615
        • Illinois Eye Center /ID# 233631
    • Kansas
      • Overland Park, Kansas, United States, 66213
        • Stiles Eyecare Excellence /ID# 233583
    • Massachusetts
      • Reading, Massachusetts, United States, 01867
        • Advanced Glaucoma Specialists /ID# 233690
    • Michigan
      • Ann Arbor, Michigan, United States, 48105
        • Kellogg Eye Center University of Michigan health system /ID# 233651
    • Minnesota
      • Saint Paul, Minnesota, United States, 55108
        • Mayo Clinic Jacksonville /ID# 233634
    • Missouri
      • Saint Louis, Missouri, United States, 63110
        • Washington University in St. Louis /ID# 233599
    • New York
      • Slingerlands, New York, United States, 12159
        • Glaucoma associates/consultants of the capital region /ID# 233695
    • North Carolina
      • Southern Pines, North Carolina, United States, 28387
        • Carolina Eye Associates /ID# 233656
    • Ohio
      • Youngstown, Ohio, United States, 44502
        • Eye Care Associates Inc /ID# 233636
    • Oklahoma
      • Oklahoma City, Oklahoma, United States, 73104
        • Dean McGee Eye Institute /ID# 233595
    • Pennsylvania
      • Chambersburg, Pennsylvania, United States, 17201
        • Ludwick Eye Center /ID# 233691
      • King Of Prussia, Pennsylvania, United States, 19406
        • Kremer Eye Center /Id# 233642
      • Philadelphia, Pennsylvania, United States, 19107
        • Wills Eye Institute /ID# 233645
      • Pittsburgh, Pennsylvania, United States, 15213
        • university of Pittsburgh /ID# 233622
    • South Carolina
      • Florence, South Carolina, United States, 29501
        • Carolinas Centers for Sight,PC /ID# 233606
    • Tennessee
      • Nashville, Tennessee, United States, 37205
        • Nashville Vision Associates /ID# 233644
    • Texas
      • Dallas, Texas, United States, 75231
        • Glaucoma Associates of Texas /ID# 233587
      • El Paso, Texas, United States, 79902
        • El Paso Eye Surgeons, P.A. /ID# 233584
      • Houston, Texas, United States, 77025
        • Houston Eye Associates /ID# 233621
      • Houston, Texas, United States, 77030-3411
        • Baylor College of Medicine - Baylor Medical Center /ID# 233612
    • Virginia
      • Roanoke, Virginia, United States, 24011
        • Vistar Eye Center /ID# 233652
    • Wisconsin
      • Madison, Wisconsin, United States, 53715
        • SSM Health Dean Medical Group /ID# 233624
      • Racine, Wisconsin, United States, 53405
        • The Eye Centers of Racine and Kenosha LTD /ID# 233657

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

16 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Open-angle glaucoma where the intraocular pressure (IOP) is not controlled when using topical IOP-lowering glaucoma medication
  • Best-corrected baseline Snellen visual acuity of 20/100 or better
  • Visual field mean deviation no worse than -18.0 decibels (dB)
  • Medicated IOP ≥15 millimeter of mercury (mm Hg) and ≤44 mm Hg
  • Participants not anticipated to require any ocular surgery (e.g., cataract surgery) in either eye up to 3 months from the time of inclusion
  • Area of healthy, free, and mobile conjunctiva in the target area (superior bulbar conjunctiva)
  • Trabecular meshwork must be visible (with Shaffer angle grade ≥2 in the target quadrant)
  • Failed ab-interno canal or suprachoroidal micro invasive glaucoma surgery (MIGS) procedures (such as i-Stent, gonioscopy-assisted transluminal trabeculotomy [GATT], Ab-interno canaloplasty [ABiC], Kahook dual blade goniotomy, etc.) are allowed ≥3 months before enrollment. CyPass® Micro-Stents were not allowed.

Exclusion Criteria:

  • Participant has active neovascular, uveitic or angle recession glaucoma or any glaucoma associated with vascular disorders
  • Participant has had prior ab externo incisional glaucoma surgery (such as trabeculectomy, viscocanalostomy, canaloplasty, tube shunts of any type, collagen implants, etc.), conjunctival filtering surgery, transscleral cycloablative procedures (such as cyclophotocoagulation, micro pulse cyclophotocoagulation, cryotherapy, ultrasound circular cyclocoagulation [UC3], etc.) or prior major conjunctival surgery (i.e., scleral buckle)
  • Clinically significant inflammation or infection within 30 days before the preoperative visit (e.g., blepharitis, conjunctivitis, severe ocular surface disease, keratitis, uveitis, herpes simplex infection)
  • Presence of conjunctival scarring or prior conjunctival surgery or other conjunctival pathologies (e.g., pterygium) in the target area
  • History of corneal surgery, corneal opacities, or corneal disease
  • Central corneal thickness ≤490 micrometer (μm) or ≥620μm
  • Vitreous present in the anterior chamber
  • Aphakic
  • Participant has had prior intraocular surgery in either eye within ≤3 months before the preoperative visit (including phacoemulsification)
  • History of complicated cataract surgery (e.g. with visual impairment, e.g. vitreous loss, anterior chamber intraocular lens [ACIOL], perhaps sutured intraocular lens [IOL] or scleral fixated IOL, prior cystoid macular edema [CME], etc.)
  • Presence of intraocular silicone oil
  • Active diabetic retinopathy, proliferative retinopathy, choroidal neovascularization, branch retinal vein occlusion, central retinal vein occlusion, geographic atrophy, or other ophthalmic disease or disorder that could confound study results or impaired episcleral venous drainage (e.g., Sturge-Weber or nanophthalmos, Axenfeld-Reiger, iridocorneal endothelial syndrome [ICE], etc.)
  • Known or suspected allergy or sensitivity to drugs required for the protocol (including anesthesia), or any of the device components (e.g., bovine or porcine products, or glutaraldehyde)
  • Pregnant or nursing women and those planning a pregnancy during the study period.
  • Participation in another drug or device clinical trial concluding within 30 days before the preoperative visit

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

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
Active Comparator: XEN-45 Gel Stent
Participants underwent at least one preoperative visit and had XEN-45 gel stent implantation on Day 0 (The day of surgery).
XEN-45 gel stent device implant
Active Comparator: Trabeculectomy
Participants underwent at least one preoperative visit and had trabeculectomy as per standard of care in each investigative center on Day 0 (The day of surgery).
Trabeculectomy surgery

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage of Participants Achieving at Least 20% Intraocular Pressure (IOP) Reduction (Improvement) From Baseline at Month 12 With Prespecified Caveats
Time Frame: Baseline (Preoperative) to Month 12
IOP is a measure of the fluid pressure inside the eye. In addition to achieving a 20% reduction of IOP from Baseline, the participants had to meet all of the following prespecified caveats at Month 12: no increase in the number of topical IOP-lowering medications compared to Baseline, no clinical hypotony, no loss of vision to count fingers or worse, and no secondary glaucoma surgical intervention.
Baseline (Preoperative) to Month 12

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Mean IOP Over Time
Time Frame: Baseline and Day 1, Weeks 1 and 2, Months 1, 3, 6, 9, and 12
IOP is a measurement of the fluid pressure inside the eye.
Baseline and Day 1, Weeks 1 and 2, Months 1, 3, 6, 9, and 12
Change From Baseline in Mean IOP Over Time
Time Frame: Baseline and Day 1, Weeks 1 and 2, Months 1, 3, 6, 9, and 12
IOP is a measurement of the fluid pressure inside the eye.
Baseline and Day 1, Weeks 1 and 2, Months 1, 3, 6, 9, and 12
Mean Number of Topical IOP-Lowering Medications Over Time
Time Frame: Baseline and Day 1, Weeks 1 and 2, Months 1, 3, 6, 9, and 12
IOP is a measurement of the fluid pressure inside the eye. Topical IOP-lowering medication classes included: prostaglandin analogues, beta adrenergic antagonists, carbonic anhydrase inhibitors,alpha adrenergic agonists, pilocarpine, and combinations of these treatments.
Baseline and Day 1, Weeks 1 and 2, Months 1, 3, 6, 9, and 12
Change From Baseline in Mean Number of Topical IOP-Lowering Medications Over Time
Time Frame: Baseline and Day 1, Weeks 1 and 2, Months 1, 3, 6, 9, and 12
IOP is a measurement of the fluid pressure inside the eye. Topical IOP-lowering medication classes included: prostaglandin analogues, beta adrenergic antagonists, carbonic anhydrase inhibitors,alpha adrenergic agonists, pilocarpine, and combinations of these treatments.
Baseline and Day 1, Weeks 1 and 2, Months 1, 3, 6, 9, and 12
Change From Baseline in Mean IOP at Month 12
Time Frame: Baseline (Preoperative) and Month 12
IOP is a measurement of the fluid pressure inside the eye.
Baseline (Preoperative) and Month 12
Change From Baseline in Mean Number of Topical IOP-Lowering Medications at Month 12
Time Frame: Baseline (Preoperative) and Month 12
IOP is a measurement of the fluid pressure inside the eye. Topical IOP-lowering medication classes included: prostaglandin analogues, beta adrenergic antagonists, carbonic anhydrase inhibitors, alpha adrenergic agonists, pilocarpine, and combinations of these treatments.
Baseline (Preoperative) and Month 12
Change in Mean IOP From Preoperative Baseline Over Time in Participants With Eyes With Baseline IOP ≤18 mm Hg
Time Frame: Baseline (Preoperative) and Month 12
IOP is a measurement of the fluid pressure inside the eye.
Baseline (Preoperative) and Month 12
Change in Number of Topical IOP-Lowering Medications From Preoperative Baseline to Month 12 in Participants With Eyes With Baseline IOP ≤18 mm Hg
Time Frame: Baseline (Preoperative) and Month 12
Topical IOP-lowering medication classes included: prostaglandin analogues, beta adrenergic antagonists, carbonic anhydrase inhibitors, alpha adrenergic agonists, pilocarpine, and combinations of these treatments.
Baseline (Preoperative) and Month 12
Percentage of Participants Achieving Specific IOP Targets at Month 12
Time Frame: Month 12
IOP is a measurement of the fluid pressure inside the eye. Specific IOP targets included following IOP values (in mm Hg): ≤18, ≤17, ≤16, ≤15, ≤14, ≤13, ≤12 mm Hg.
Month 12
Percentage of Participants Achieving Specific Percentage IOP Lower Targets From Baseline at Month 12
Time Frame: Baseline (Preoperative) to Month 12
IOP is a measurement of fluid pressure inside the eye. Specific percentage IOP lower targets included ≥25%, ≥30%, ≥35%, ≥40% ≥45%, and ≥50% IOP reduction.
Baseline (Preoperative) to Month 12
Percentage of Participants Achieving at Least a 20% IOP Reduction and Specific IOP Targets on Same or Lower Number of Topical IOP-Lowering Medications at Month 12
Time Frame: Baseline (Preoperative) and Month 12
IOP is a measurement of fluid pressure inside the eye. Specific IOP targets included following IOP values (in mm Hg): ≤18, ≤17, ≤16, ≤15, ≤14, ≤13, ≤12 mm Hg.
Baseline (Preoperative) and Month 12
Percentage of Participants With Needlings Performed
Time Frame: Up to Month 12
Needling of eye involves breaking down the wall of the scar using a fine needle to improve the drainage of fluid inside the eye.
Up to Month 12
Mean Number of Needlings Per Eye
Time Frame: Up to Month 12
Needling of eye involves breaking down the wall of the scar using a fine needle to improve the drainage of fluid inside the eye.
Up to Month 12
Percentage of Eyes Achieving at Least a 20% Reduction in IOP at Month 12 on the Same or Fewer Topical IOP-lowering Medications in Participants Who Had Needlings
Time Frame: Month 12
IOP is a measurement of fluid pressure inside the eye. Topical IOP-lowering medication classes include: prostaglandin analogues, beta adrenergic antagonists, carbonic anhydrase inhibitors, alpha adrenergic agonists, pilocarpine, and combinations of these treatments.
Month 12
Percentage of Eyes Not Using Any Topical IOP-lowering Medications in Participants Who Had Needlings
Time Frame: Month 12
Topical IOP-lowering medication classes included: prostaglandin analogues, beta adrenergic antagonists, carbonic anhydrase inhibitors, alpha adrenergic agonists, pilocarpine, and combinations of these treatments.
Month 12
Percentage of Participants With Antifibrotic Use During Needling
Time Frame: Up to Month 12
Antifibrotic use included mitomycin-C (MMC) which was standardized for both groups and administered according to physician training and practice.
Up to Month 12
Percentage of Participants Achieving Complete Success at Month 12
Time Frame: Month 12
Complete success was defined as IOP ≤18mm Hg, with 20% or greater IOP lowering from medicated Baseline, on no topical medications, and no clinical hypotony. The topical medication included any topical ophthalmic medication used on the study eye regardless of the indication and dosage.
Month 12
Percentage of Participants Achieving Qualified Success at Month 12
Time Frame: Month12
Qualified success was defined as IOP ≤18 mm Hg, with 20% or greater IOP lowering from medicated Baseline, taking topical medications at Baseline Qualifying Visit, no clinical hypotony. The topical medication included any topical ophthalmic medication used on the study eye regardless of the indication and dosage.
Month12
Percentage of Participants Achieving Specific IOP Targets at Month 12 in Medication-free Eye
Time Frame: Month 12
IOP is a measurement of the fluid pressure inside the eye. Specific IOP targets included following IOP values (in mm Hg): ≤18, ≤17, ≤16, ≤15, ≤14, ≤13, ≤12 mm Hg. Medication-free eye at Month 12 was defined as no IOP-lowering medication was used to the study eye at Month 12.
Month 12
Percentage of Participants Achieving Specific Percentage IOP Lower Targets From Baseline at Month 12 With Medication-free Eyes
Time Frame: Month 12
IOP is a measurement of the fluid pressure inside the eye. Specific percentage IOP lower targets included ≥25%, ≥30%, ≥35%, ≥40% ≥45%, and ≥50% IOP reduction. Medication-free eye at Month 12 was defined as no IOP-lowering medication was used to the study eye at Month 12.
Month 12
Percentage of Participants With Intraoperative Adjunctive Antifibrotic Therapy Use
Time Frame: Month 12
Antifibrotic use included MMC which was standardized for both groups and administered according to physician training and practice.
Month 12
Percentage of Participants With Intraoperative Adjunctive Antifibrotic Therapy Based on Time of Administration
Time Frame: Month 12
Antifibrotic use included MMC which was standardized for both groups and administered according to physician training and practice. The time of administration was classified into two categories as: Before Procedure and After Procedure.
Month 12
Percentage of Participants With Different Modes of Administration of Intraoperative Adjunctive Antifibrotic Therapy
Time Frame: Month 12
Antifibrotic use included MMC which was standardized for both groups and administered according to physician training and practice. The mode of administration was classified into two categories as: Injection and Other. Other includes all other modes of administration apart from injection.
Month 12
Percentage of Participants With Different Volumes of Intraoperative Adjunctive Antifibrotic Therapy
Time Frame: Month 12
Antifibrotic use included MMC which was standardized for both groups and administered according to physician training and practice. The volume of administration measured in milliliters (mL) was classified into three categories as: 0.1, 0.2, and Other. Other includes all other volumes apart from 0.1 and 0.2.
Month 12
Percentage of Participants With Different Concentrations for Intraoperative Adjunctive Antifibrotic Therapy
Time Frame: Month 12
Antifibrotic use included MMC which was standardized for both groups and administered according to physician training and practice. The concentration of administration measured in milligram per milliliter (mg/mL) was classified into three categories as: 0.2, 0.4, and Other. Other includes all other concentrations apart from 0.2 and 0.4.
Month 12
Percentage of Participants With Different Absolute Dose for Intraoperative Adjunctive Antifibrotic Therapy
Time Frame: Month 12
Antifibrotic use included MMC which was standardized for both groups and administered according to physician training and practice. The absolute dose of administration measured in microgram per milliliter (µg/mL) was classified into two categories as: 40, and Other. Other includes all other concentrations apart from 40.
Month 12
Mean Change From Baseline in Best Corrected Visual Acuity (BCVA) With Current Glasses
Time Frame: Baseline and Day 1, Weeks 1 and 2, and Months 1, 3, 6, 9, and 12
BCVA was performed using a Snellen eye chart with glasses, and the BCVA data collected in the visual acuity electronic case report form (eCRF) page was analyzed. The number of lines read correctly was assessed as the line change from baseline at each follow-up evaluation and were log transformed. A logMAR value of 0 equates to 20/20 Snellen visual acuity (normal distance eyesight), with a lower and negative logMAR value indicating better visual acuity.
Baseline and Day 1, Weeks 1 and 2, and Months 1, 3, 6, 9, and 12
Mean Change From Baseline in Manifest Refraction - Mean Visual Acuity Using Snellen Eye Chart in LogMAR Scale
Time Frame: Baseline (Preoperative) and postoperative Months 1, 3, 6, and 12
Manifest Refraction - Mean Visual Acuity was performed using a Snellen eye chart with glasses. The line change from baseline at each follow-up evaluation in logarithm of the minimum angle of resolution (logMAR) was calculated. A logMAR value of 0 equates to 20/20 Snellen visual acuity (normal distance eyesight), with a lower logMAR value indicating better visual acuity.
Baseline (Preoperative) and postoperative Months 1, 3, 6, and 12
Mean Surgically Induced Astigmatism - Autorefractor Reading
Time Frame: Month 12
Month 12
Mean Change From Baseline in Surgically Induced Astigmatism - Autorefractor Reading
Time Frame: Baseline (Preoperative) and Month 12
Baseline (Preoperative) and Month 12
Mean Change From Baseline in Surgically Induced Astigmatism - Topography at Selected Sites
Time Frame: Baseline (Preoperative), Week 1, and Months 1 and 12
Baseline (Preoperative), Week 1, and Months 1 and 12
Mean Change From Baseline in Optical Biometry - Anterior Chamber Depth
Time Frame: Baseline, Day 1 and Week 2
Baseline, Day 1 and Week 2
Mean Change in From Baseline Optical Biometry - Keratometry (K)1, K2, Delta D
Time Frame: Baseline, Day 1 and Week 2
The keratometric values for keratometry (K) measured in 2 meridians (i.e., flat keratometry [K1] and steep keratometry [K2]) along with Delta (D) were determined.
Baseline, Day 1 and Week 2
Bleb Morphology - Anterior Segment Optical Coherence Tomography (AS-OCT) at Selected Sites
Time Frame: Up to Month 12
Up to Month 12
Bleb Morphology - Slit Lamp Photography at Selected Sites
Time Frame: Up to Month 12
Up to Month 12
Percentage of Participants With Clinical Hypotony
Time Frame: Month 12
Clinical hypotony was defined as vision reduction (2 lines or more) related to macular changes consistent with hypotony maculopathy (macular folds), optic disc edema, and/or serous choroidal detachments because of low IOP.
Month 12
Percentage of Eyes With IOP 6 mm Hg or Less at Any Time Point and Relevant Clinical Assessment
Time Frame: Up to Month 12
Eyes with IOP 6 mm Hg or less at any time point and relevant clinical assessment (vision reduction [2 lines or more] related to macular changes consistent with hypotony maculopathy [macular folds], optic disc edema, anterior chamber status, and/or serous choroidal detachments because of low IOP) of these eyes at those time points were assessed. Only data from study eyes are included. The worse eye was selected as the study eye if both eyes met the inclusion criteria. The worse eye was defined using the visual field MD at Baseline, with the worse eye having the most negative MD. In cases where the MD was the same in both eyes to two decimal places, the worse eye was defined as the eye with the higher IOP.
Up to Month 12
Percentage of Participants With Specific Intraoperative Adverse Events of Special Interest (AESIs)
Time Frame: Median follow-up of 366.0 days
An adverse event(AE)is any untoward medical occurrence in a clinical investigation participant administered drug; it does not necessarily have to have a causal relationship with the treatment. Intraoperative AESIs included- Detached Descemet's membrane,iris damage,lens contact,vitreous bulge or loss,anterior chamber bleeding,retrobulbar hemorrhage,conjunctival perforation,conjunctival or scleral flap tearing,shallow anterior chamber with peripheral iridocorneal touch,flat anterior chamber with iridocorneal touch extending to the pupil,device malfunction identified prior to implantation,and choroidal hemorrhage of effusion. Only categories with at least one participant with event in the study eye are reported. The worse eye was selected as the study eye if both eyes met inclusion criteria. The worse eye was defined using visual field MD at Baseline, with the worse eye having the most negative MD. If MD was same in both eyes to two decimal places, the worse eye=eye with higher IOP.
Median follow-up of 366.0 days
Percentage of Participants With Postoperative Treatment-Emergent Adverse Events of Special Interest (AESIs)
Time Frame: Median follow-up of 366.0 days
AE=any untoward medical occurrence in a clinical investigation participant administered drug;it does not necessarily have to have a causal relationship with the treatment. TEAE is an AE either reported for the first time or worsening of a pre-existing event after first dose of study drug and within 30 days of the last administration of study drug. Postoperative AEs included but were not limited to: angle recession, anterior chamber changes, BCVA loss,bleb leak, blebitis, cataract, choroidal effusion, chronic pain, corneal edema, cyclodialysis, Dellen, device malfunction, endophthalmitis, fixed dilated pupil, hyphema, hypotony, implant issues, increase in corneal thickness/IOP, explant, iridodialysis, iritis, loss of eye, etc.Worse eye=eye if both eyes met inclusion criteria. Worse eye was defined using visual field MD at Baseline, with worse eye having the most negative MD. In cases where MD was the same in both eyes to two decimal places, worse eye was defined as eye with higher IOP.
Median follow-up of 366.0 days
Percentage of Participants With BCVA Worst Line Change From Baseline Across Follow-Up
Time Frame: Baseline up to Month 12
The categories = Worsening (<-2), No Change (≥-2 and ≥2), Improving (>2) and Missing were used for determining BCVA worst line change from Baseline. Only categories with at least one participant with event are reported.
Baseline up to Month 12
Pachymetry Based on Change From Baseline In Average Central Corneal Thickness
Time Frame: Baseline (Preoperative) and Month 12
Pachymetry was measured as average central corneal thickness (microns/micrometer) change from Baseline.
Baseline (Preoperative) and Month 12
Change From Baseline in Visual Field Examinations Analyzed by Machine Type
Time Frame: Baseline and Month 12
All visual field examination data were collected and reported as mean deviation by Humphrey machine.
Baseline and Month 12
Percentage of Participants With at Least One Adverse Event (AE), Serious Adverse Events (SAEs), Adverse Device Effects (ADEs) and Serious ADEs (SADEs)
Time Frame: Median follow-up of 366.0 days
AE=any untoward medical occurrence in a clinical investigation participant administered drug; it does not necessarily have to have a causal relationship with the treatment. An SAE was defined as any untoward medical occurrence that: 1) results in death, 2) is life-threatening, 3) requires inpatient hospitalization or prolongation of existing hospitalization, 4) results in persistent or significant disability/incapacity, 5) leads to a congenital anomaly/birth defect in the offspring of the participant or 6) is a medically important event that satisfies any of the following: a) May require intervention to prevent items 1 through 5 above. b) May expose the participant to danger, even though the event is not immediately life threatening or fatal or does not result in hospitalization. ADEs and SADEs are AEs and SAEs that are caused by the device
Median follow-up of 366.0 days
Patient-reported Outcomes (PRO): Change From Baseline in Symptom and Health Problem Checklist (SHPC-18) Scores
Time Frame: Baseline (Preoperative) to Month 6
The SHPC-18 is an 18-item questionnaire that asks participants being treated for glaucoma questions about eye symptoms or problems they may experience. There are two domains: Local Eye Symptoms (7 items) subscale score 0 to 700 divided by 7 and Visual Function Problem (11 items) subscale score 0 to 1100 divided by 11. The scores of each subscale ranges from from 0 (not at all) to 100 (a lot); higher scores indicate more bother. A frequency score was calculated by summing the individual response scores of each item, and ranges from 0 to 7 for Local Eye Symptom and from 0 to 11 for Visual Function. A total bothersome score for the SHPC-18 is calculated by summing all 18 items scores, resulting in a range from 0 to 1800, then dividing the sum by 18, to create a total bothersome score ranging from 0 (not at all) to 100 (a lot); higher scores indicate more bother. A negative change from Baseline for all scales and subscales indicates improvement.
Baseline (Preoperative) to Month 6
PRO: Percentage of Participants With Post-Surgical Resumption of Activities and Daily Routine
Time Frame: Month 3
Participants answered the question, "Since your glaucoma surgery, would you consider that you have resumed your usual activities and daily routine?" using the following categories: Not at all, Somewhat, Moderately so, Mostly, Completely.
Month 3
PRO: Percent Change From Baseline in Work Productivity and Activity Impairment (WPAI): Percent Overall Work Impairment Due to Health
Time Frame: Baseline (Preoperative) and Month 12
WPAI-General Health (GH) is 6-question participant rated questionnaire to determine the amount of absenteeism, presenteeism, work productivity loss and daily activity impairment attributable to general health. It yields 5 sub-scores: hours actually worked, work time missed due to health impairment while working, impairment while working due to health, overall work impairment due to health, activity impairment due to health. These sub-scores are transformed to impairment percentages (range from 0 to 100), with higher numbers indicating greater impairment and less productivity. A negative change from Baseline indicates improvement.
Baseline (Preoperative) and Month 12
PRO: Percent Change From Baseline in WPAI: Percent Activity Impairment Due to Health
Time Frame: Baseline (Preoperative) and Month 12
WPAI-General Health (GH) is 6-question participant rated questionnaire to determine the amount of absenteeism, presenteeism, work productivity loss and daily activity impairment attributable to general health. It yields 5 sub-scores: hours actually worked, work time missed due to health impairment while working, impairment while working due to health, overall work impairment due to health, activity impairment due to health. These sub-scores are transformed to impairment percentages (range from 0 to 100), with higher numbers indicating greater impairment and less productivity. A negative change from Baseline indicates improvement.
Baseline (Preoperative) and Month 12

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 1, 2018

Primary Completion (Actual)

May 13, 2021

Study Completion (Actual)

May 13, 2021

Study Registration Dates

First Submitted

August 23, 2018

First Submitted That Met QC Criteria

August 30, 2018

First Posted (Actual)

August 31, 2018

Study Record Updates

Last Update Posted (Actual)

July 21, 2022

Last Update Submitted That Met QC Criteria

June 27, 2022

Last Verified

June 1, 2022

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CMO-US-EYE-0600

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Yes

IPD Plan Description

AbbVie is committed to responsible data sharing regarding the clinical trials we sponsor. This includes access to anonymized, individual and trial-level data (analysis data sets), as well as other information (e.g., protocols and clinical study reports), as long as the trials are not part of an ongoing or planned regulatory submission. This includes requests for clinical trial data for unlicensed products and indications.

IPD Sharing Time Frame

For details on when studies are available for sharing, please refer to the link below.

IPD Sharing Access Criteria

Access to this clinical trial data can be requested by any qualified researchers who engage in rigorous, independent scientific research, and will be provided following review and approval of a research proposal and Statistical Analysis Plan (SAP) and execution of a Data Use Agreement (DUA). For more information on the process, or to submit a request, visit the following link.

IPD Sharing Supporting Information Type

  • Study Protocol
  • Statistical Analysis Plan (SAP)
  • Clinical Study Report (CSR)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

Yes

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.

Clinical Trials on Glaucoma

Clinical Trials on XEN-45 Gel Stent

3
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