Evidence map›Paper›PMID 34750590›Full record

ArticleEye (London, England)2022

The effect of systemic levels of TNF-alpha and complement pathway activity on outcomes of VEGF inhibition in neovascular AMD.

Adnan H Khan, Charles O Pierce, Gabriella De Salvo, Helen Griffiths, Marie Nelson, Angela J Cree, Geeta Menon, Andrew J Lotery

Open access · hybridAbstract read
In one paragraph

Article in Eye (London, England), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
3.7field-weighted citation impact, top 6% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

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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 at 3 institutions in 1 country.

Adnan H KhanDivision of Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK.ORCID 0000-0001-8153-8002
Charles O PierceDivision of Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK.
Gabriella De SalvoSouthampton Eye Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK.
Helen GriffithsDivision of Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK.
Marie NelsonSouthampton Eye Unit, University Hospital Southampton NHS Foundation Trust, Southampton, UK.
Angela J CreeDivision of Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK.ORCID 0000-0002-1987-8900
Geeta MenonDepartment of Ophthalmology, Frimley Park Hospital, Frimley Health NHS Foundation Trust, Camberley, UK.
Andrew J LoteryDivision of Clinical Neurosciences, Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK. A.J.Lotery@soton.ac.uk.ORCID 0000-0001-5541-4305
University Hospital Southampton NHS Foundation Trust · GBUniversity of Southampton · GBFrimley Health NHS Foundation Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

objectivesSystemic levels of pro-inflammatory cytokines and activated complement components affect the risk and/or progression of neovascular age-related macular degeneration (AMD). This study investigated the effect of serum pro-inflammatory cytokine levels and complement pathway activity on the clinical response to vascular endothelial growth factor (VEGF) inhibition in neovascular AMD.

methodsSixty-five patients with a new diagnosis of neovascular AMD were observed over a six-month period in a single-centre, longitudinal cohort study. At each visit, the visual acuity score (VAS), central macular thickness (CMT), serum levels of CRP, pro-inflammatory cytokines (TNF-α, IL-1β, IL-2, IL-6 and IL-8), and complement pathway activity were measured. Participant DNA samples were sequenced for six complement pathway single nucleotide polymorphisms (SNPs) associated with AMD.

resultsA statistically significant difference in VAS was observed for serum levels of TNF-α only: there was a gain in VAS (from baseline) of 1.37 for participants below the 1st quartile of mean concentration compared to a reduction of 2.71 for those above the 3rd quartile. Statistical significance was maintained after Bonferroni correction (P value set at <0.006). No significant differences in CMT were observed. In addition, statistically significant differences, maintained after Bonferroni correction, were observed in serum complement activity for participants with the following SNPs: CFH region (rs1061170), SERPING1 (rs2511989) and CFB (rs641153). Serum complement pathway components did not significantly affect VAS.

conclusionsLower serum TNF-α levels were associated with an increase in visual acuity after anti-VEGF therapy. This suggests that targeting pro-inflammatory cytokines may augment treatment for neovascular AMD.

Indexed as

Angiogenesis InhibitorsWet Macular DegenerationComplement C1 Inhibitor ProteinComplement Factor HHumansInterleukin-2Interleukin-6Interleukin-8Longitudinal StudiesPolymorphism, Single NucleotideTumor Necrosis Factor-alphaVascular Endothelial Growth Factor AVisual AcuityAngiogenesis InhibitorsComplement C1 Inhibitor ProteinComplement Factor HInterleukin-2Interleukin-6Interleukin-8Tumor Necrosis Factor-alphaVascular Endothelial Growth Factor A

Identifiers

PMID34750590
PMCPMC9581945
OpenAlexW3211981353

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.