Evidence map›Paper›PMID 33022379›Full record

ReviewProgress in retinal and eye research2021

Incomplete response to Anti-VEGF therapy in neovascular AMD: Exploring disease mechanisms and therapeutic opportunities.

Priyatham S Mettu, Michael J Allingham, Scott W Cousins

Open access · greenAbstract readReview
In one paragraph

Review in Progress in retinal and eye research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 219 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
219citing papers in PubMed, 1 pooled it
21.9field-weighted citation impact, top 1% of its field
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

219 citing papers in PubMed, 1 synthesis or guideline pooled it, 345 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Two-year outcomes of episcleral brachytherapy adjunct to anti-VEGF therapy for treatment-resistant nAMD.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2022
    Trial
  4. Novel semi-automated system for multi-dimensional analysis of macular neovascularization: quantitative biomarkers and rule-based morphological categorization across OCTA platforms.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Article
  5. Intraocular delivery of crystalline sorafenib provides sustained, potent inhibition of wet age-related macular degeneration.Journal of controlled release : official journal of the Controlled Release Society · 2026
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Comparative outcomes of aflibercept 8 mg and faricimab in neovascular AMD refractory to aflibercept 2 mg.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2026
    Article
  13. Article
  14. Article
  15. Observational
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article

159 more citing papers are in PubMed but not listed here.

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 at 1 institution in 1 country.

Priyatham S MettuDuke Center for Macular Diseases, Department of Ophthalmology, Duke University School of Medicine, Durham, NC, NC. Electronic address: prithu.mettu@duke.edu.
Michael J AllinghamDuke Center for Macular Diseases, Department of Ophthalmology, Duke University School of Medicine, Durham, NC, NC.
Scott W CousinsDuke Center for Macular Diseases, Department of Ophthalmology, Duke University School of Medicine, Durham, NC, NC; Department of Immunology, Duke University School of Medicine, Durham, NC, USA.
Duke University · US

Funding

VISION RESEARCHP30EY005722 · NEI · DUKE UNIVERSITY · PI W Daniel Stamer · 1985 to 2026
$19.3M
IMMUNE RESPONSES IN MACULAR DEGENERATIONR01EY013318 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI COUSINS, SCOTT W · 2001 to 2009
$2.8M
Vascular Progenitor Cells in Neovascular AMDR01EY018880 · NEI · DUKE UNIVERSITY · PI COUSINS, SCOTT W · 2008 to 2012
$1.9M
Muller glial dysfunction in retinal edemaK08EY026627 · NEI · DUKE UNIVERSITY · PI ALLINGHAM, MICHAEL JOHN · 2016 to 2019
$639k
Macrophages and Treatment-Resistant NVAMDK08EY025325 · NEI · DUKE UNIVERSITY · PI METTU, PRIYATHAM SAI · 2015 to 2018
$612k
AGING AND VASCULOGENESIS IN MACULAR DEGENERATIONR03EY015292 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI COUSINS, SCOTT W · 2004 to 2006
$453k
NEI NIH HHS K08 EY025325NEI NIH HHS K08 EY026627NEI NIH HHS P30 EY005722NEI NIH HHS R01 EY013318NEI NIH HHS R01 EY018880NEI NIH HHS R03 EY015292
6 · The paper itself

Abstract

Intravitreal anti-vascular endothelial growth factor (VEGF) drugs have revolutionized the treatment of neovascular age-related macular degeneration (NVAMD). However, many patients suffer from incomplete response to anti-VEGF therapy (IRT), which is defined as (1) persistent (plasma) fluid exudation; (2) unresolved or new hemorrhage; (3) progressive lesion fibrosis; and/or (4) suboptimal vision recovery. The first three of these collectively comprise the problem of persistent disease activity (PDA) in spite of anti-VEGF therapy. Meanwhile, the problem of suboptimal vision recovery (SVR) is defined as a failure to achieve excellent functional visual acuity of 20/40 or better in spite of sufficient anti-VEGF treatment. Thus, incomplete response to anti-VEGF therapy, and specifically PDA and SVR, represent significant clinical unmet needs. In this review, we will explore PDA and SVR in NVAMD, characterizing the clinical manifestations and exploring the pathobiology of each. We will demonstrate that PDA occurs most frequently in NVAMD patients who develop high-flow CNV lesions with arteriolarization, in contrast to patients with capillary CNV who are highly responsive to anti-VEGF therapy. We will review investigations of experimental CNV and demonstrate that both types of CNV can be modeled in mice. We will present and consider a provocative hypothesis: formation of arteriolar CNV occurs via a distinct pathobiology, termed neovascular remodeling (NVR), wherein blood-derived macrophages infiltrate the incipient CNV lesion, recruit bone marrow-derived mesenchymal precursor cells (MPCs) from the circulation, and activate MPCs to become vascular smooth muscle cells (VSMCs) and myofibroblasts, driving the development of high-flow CNV with arteriolarization and perivascular fibrosis. In considering SVR, we will discuss the concept that limited or poor vision in spite of anti-VEGF may not be caused simply by photoreceptor degeneration but instead may be associated with photoreceptor synaptic dysfunction in the neurosensory retina overlying CNV, triggered by infiltrating blood-derived macrophages and mediated by Müller cell activation Finally, for each of PDA and SVR, we will discuss current approaches to disease management and treatment and consider novel avenues for potential future therapies.

Indexed as

Choroidal NeovascularizationWet Macular DegenerationAngiogenesis InhibitorsAnimalsHumansIntravitreal InjectionsMiceVascular Endothelial Growth Factor AVisual AcuityAngiogenesis InhibitorsVascular Endothelial Growth Factor AAnti-VEGFAnti-VEGF resistanceChoroidal neovascularizationMacrophageMesenchymal precursor cellMonocyteMüller cellNeovascular age-related macular degenerationNeovascular remodelingPersistent disease activityPhotoreceptor synaptic dysfunctionSuboptimal vision recovery

Identifiers

PMID33022379
PMCPMC10368393
OpenAlexW3089551374

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

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.