Evidence map›Paper›PMID 27234973›Full record

ArticleAngiogenesis2016

Aflibercept exhibits VEGF binding stoichiometry distinct from bevacizumab and does not support formation of immune-like complexes.

Douglas A MacDonald, Joel Martin, Kathir K Muthusamy, Jiann-Kae Luo, Erica Pyles, Ashique Rafique, Tammy Huang, Terra Potocky, Yang Liu, Jingtai Cao and 12 more

Open access · hybridAbstract read
In one paragraph

Article in Angiogenesis, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
4.6field-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

25 citing papers in PubMed, 42 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

22 authors at 3 institutions in 2 countries.

Douglas A MacDonaldRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Joel MartinRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Kathir K MuthusamyRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Jiann-Kae LuoRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Erica PylesRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Ashique RafiqueRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Tammy HuangRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Terra PotockyRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Yang LiuRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Jingtai CaoRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Françoise BonoSanofi, Toulouse, France.
Nathalie DelesqueSanofi, Toulouse, France.
Pierre SaviSanofi, Toulouse, France.
John FrancisCenter for Thrombosis Research, Florida Hospital, Orlando, FL, USA.
Ali AmirkhosraviCenter for Thrombosis Research, Florida Hospital, Orlando, FL, USA.
Todd MeyerCenter for Thrombosis Research, Florida Hospital, Orlando, FL, USA.
Carmelo RomanoRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Meredith GlinkaRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
George D YancopoulosRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Neil StahlRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Stanley J WiegandRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
Nicholas PapadopoulosRegeneron Pharmaceuticals Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA. nicholas.papadopoulos@regeneron.com.
Regeneron (United States) · USAdventHealth Orlando · USSanofi (France) · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Anti-vascular endothelial growth factor (VEGF) therapies have improved clinical outcomes for patients with cancers and retinal vascular diseases. Three anti-VEGF agents, pegaptanib, ranibizumab, and aflibercept, are approved for ophthalmic indications, while bevacizumab is approved to treat colorectal, lung, and renal cancers, but is also used off-label to treat ocular vascular diseases. The efficacy of bevacizumab relative to ranibizumab in treating neovascular age-related macular degeneration has been assessed in several trials. However, questions persist regarding its safety, as bevacizumab can form large complexes with dimeric VEGF165, resulting in multimerization of the Fc domain and platelet activation. Here, we compare binding stoichiometry, Fcγ receptor affinity, platelet activation, and binding to epithelial and endothelial cells in vitro for bevacizumab and aflibercept, in the absence or presence of VEGF. In contrast to bevacizumab, aflibercept forms a homogenous 1:1 complex with each VEGF dimer. Unlike multimeric bevacizumab:VEGF complexes, the monomeric aflibercept:VEGF complex does not exhibit increased affinity for low-affinity Fcγ receptors, does not activate platelets, nor does it bind to the surface of epithelial or endothelial cells to a greater degree than unbound aflibercept or control Fc. The latter finding reflects the fact that aflibercept binds VEGF in a unique manner, distinct from antibodies not only blocking the amino acids necessary for VEGFR1/R2 binding but also occluding the heparin-binding site on VEGF165.

Indexed as

Angiogenesis InhibitorsAnimalsAntigen-Antibody ComplexBevacizumabCell LineHumansHuman Umbilical Vein Endothelial CellsIn Vitro TechniquesMacular DegenerationMiceMice, TransgenicPlatelet ActivationProtein BindingProtein MultimerizationReceptors, IgGReceptors, Vascular Endothelial Growth FactorafliberceptAngiogenesis InhibitorsAntigen-Antibody ComplexBevacizumabFc gamma receptor IIAReceptors, IgGReceptors, Vascular Endothelial Growth FactorRecombinant Fusion ProteinsVascular Endothelial Growth Factor AVEGFA protein, humanAfliberceptBevacizumabImmune complexesVEGF

Identifiers

PMID27234973
PMCPMC4930479
OpenAlexW2406263618

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.