Evidence map›Paper›PMID 39915236›Full record

Trial reportBMJ open ophthalmology2025

Effectiveness and safety of the XEN45 gel stent compared to trabeculectomy in primary open-angle glaucoma: the Gold-Standard Pathway Study.

Iqbal Ike K Ahmed, Vanessa Vera, Ingeborg Stalmans, Antonio Maria Fea, Kaweh Mansouri, Xuemin Gu, Earl Randy Craven, Herbert A Reitsamer

Abstract readRandomized Controlled TrialComparative StudyMulticenter Study
In one paragraph

Trial report in BMJ open ophthalmology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Referral for glaucoma surgery and types of surgery in different European regions in 2025, the EURACCUR study.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Iqbal Ike K AhmedJohn Moran Eye Center, University of Utah, Salt Lake City, Utah, USA.
Vanessa VeraAllergan, an AbbVie company, Irvine, California, USA.ORCID 0000-0003-2294-0055
Ingeborg StalmansDepartment of Ophthalmology, University Hospitals UZ Leuven, Leuven, Belgium.
Antonio Maria FeaStruttura Complessa Oculistica, Città Della Salute e Della Scienza di Torino, Dipartimento di Scienze Chirurgiche, Università Degli Studi di Torino, Torino, Italy antoniomfea@gmail.com.ORCID 0000-0002-6551-6054
Kaweh MansouriDepartment of Ophthalmology, University of Denver, Denver, CO, USA.ORCID 0009-0007-3068-3737
Xuemin GuAllergan, an AbbVie company, Irvine, California, USA.
Earl Randy CravenAllergan, an AbbVie company, Irvine, California, USA.ORCID 0000-0002-2077-659X
Herbert A ReitsamerDepartment of Ophthalmology and Optometry, University Clinic Salzburg, SALK/Paracelsus Medical University, Salzburg, Austria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo compare the gel stent to trabeculectomy in the Gold-Standard Pathway Study (GPS) patients with primary open-angle glaucoma (POAG).

methodsIn the GPS, patients with elevated intraocular pressure (IOP) poorly controlled with IOP-lowering medication were randomised (2:1, gel stent:trabeculectomy). Aggregate primary endpoint: patients (%) at month 12 achieving ≥20% IOP reduction from baseline without medication increase, clinical hypotony, vision loss to counting fingers or secondary surgical intervention (SSI). Secondary endpoints included changes in mean IOP and medication count from baseline; postoperative interventions; visual recovery; postoperative complications; and the Symptom and Health Problem Checklist (SHPC-18) questionnaire.

resultsOf 130 eyes with POAG treated/analysed (gel stent, n=88; trabeculectomy, n=42); 61.4% and 69.0% met the primary endpoint, respectively (p=0.394). At month 12, the change from baseline in mean IOP was statistically greater post-trabeculectomy (by 2.8 mm Hg; p=0.028) than post-gel stent. Postoperative intervention and postoperative complication rates were 39.8% and 75.0% (gel stent) versus 76.2% and 92.9% (trabeculectomy), respectively. Hypotony (IOP ≤6 mm Hg at two consecutive visits) rates were 14.8% (gel stent) and 28.6% (trabeculectomy). Visual recovery was faster/better (per the mean and time to first return to baseline best corrected visual acuity) and SHPC-18-related improvements were greater post-gel stent than post-trabeculectomy.

conclusionSimilar proportions of eyes with POAG achieved the primary endpoint post-gel stent and post-trabeculectomy. The mean IOP reduction was statistically greater post-trabeculectomy. The gel stent resulted in fewer postoperative interventions, faster/better visual recovery, favourable patient-reported outcomes and fewer specific adverse events, although more SSIs and IOP elevations were observed.

Indexed as

Glaucoma Drainage ImplantsGlaucoma, Open-AngleIntraocular PressureStentsTrabeculectomyVisual AcuityAgedFemaleFollow-Up StudiesHumansMaleMiddle AgedPostoperative ComplicationsProspective StudiesSurveys and QuestionnairesTonometry, OcularGlaucomaIntraocular pressureOcular HypertensionTreatment Surgery

Identifiers

PMID39915236
PMCPMC11804186

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.