Evidence map›Paper›PMID 42675158›Full record

SynthesisAngiogenesis2026

Ocular gene therapy targeting retinal angiogenesis and vascular leakage: translational and clinical evidence from a systematic review and meta-analysis.

Kai-Yang Chen, Hoi-Chun Chan, Chi-Ming Chan

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Angiogenesis, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0cells of the map it votes in
0citing papers in PubMed
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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

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

3 authors.

Kai-Yang ChenDepartment of General Medicine, Chang Gung Memorial Hospital (Linkou Branch), Taoyuan, Taiwan.
Hoi-Chun ChanSchool of Pharmacy, China Medical University, Taichung, Taiwan.
Chi-Ming ChanDepartment of Ophthalmology, Cardinal Tien Hospital, New Taipei City, Taiwan. 068268@mail.fju.edu.tw.ORCID http://orcid.org/0000-0001-6981-3411

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionRetinal diseases driven by pathological angiogenesis and vascular leakage, including neovascular age-related macular degeneration and diabetic retinopathy, impose substantial visual and treatment burdens because current anti-vascular endothelial growth factor (anti-VEGF) therapy requires repeated intravitreal administration. Ocular gene therapy can provide durable intraocular expression of therapeutic proteins and sustained pathway-level disease control.

methodsThis systematic review and meta-analysis was prospectively registered in the International Prospective Register of Systematic Reviews (PROSPERO) and conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 guidelines. PubMed, Scopus, Web of Science, ScienceDirect, and the Cochrane Library were searched from inception to April 21, 2026. Eligible studies included preclinical, in vitro, and clinical investigations of gene-based interventions targeting retinal angiogenesis, vascular permeability, or related anatomical and treatment-burden outcomes. Random-effects meta-analyses were performed using standardized mean differences (SMDs), mean differences (MDs), and logit event rates.

resultsTwenty-five studies were included. Preclinical gene therapy significantly reduced pathological neovascularization, with a pooled standardized mean difference (SMD) of -1.16 (95% confidence interval [CI], -1.48 to -0.84; p < 0.001) and negligible heterogeneity (I² = 0%). Vascular leakage was also significantly reduced across preclinical experimental studies, with a pooled mean difference (MD) of 0.215 (95% CI, 0.178-0.251; p < 0.001; I

conclusionOcular gene therapy shows strong preclinical anti-angiogenic and anti-permeability effects, with emerging clinical evidence of anatomical improvement and reduced anti-VEGF treatment burden in neovascular retinal disease cohorts. Larger disease-specific randomized trials are required to confirm long-term efficacy, safety, and patient selection.

Indexed as

Capillary PermeabilityGenetic TherapyRetinal NeovascularizationAnimalsGene Therapy AgentsHumansTranslational Research, BiomedicalAdeno-associated virusEfficacyMeta-analysisNeovascularizationOcular gene therapyRetinal diseaseSafetyVascular permeability

Identifiers

PMID42675158
PMCPMC13529909

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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.