Evidence map›Paper›PMID 26854859›Full record

ArticlemAbs2016

Inhibition of CD73 AMP hydrolysis by a therapeutic antibody with a dual, non-competitive mechanism of action.

James C Geoghegan, Gundo Diedrich, Xiaojun Lu, Kim Rosenthal, Kris F Sachsenmeier, Herren Wu, William F Dall'Acqua, Melissa M Damschroder

Open access · goldAbstract read
In one paragraph

Article in mAbs, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
11.3field-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

61 citing papers in PubMed, 108 citations in OpenAlex.

  1. Durvalumab plus Paclitaxel, with or without Capivasertib or Oleclumab, in Patients with Locally Advanced/Metastatic Triple-Negative Breast Cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2026
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  5. Sym024 Interacts with a Unique Epitope on the CD73 Homodimer, Favoring Effective Bivalent Binding to Improve Anti-PD-1 Therapy.Clinical cancer research : an official journal of the American Association for Cancer Research · 2026
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  16. The Clinical Significance of CD73 in Cancer.International journal of molecular sciences · 2023
    Review
  17. Article
  18. Targeting Cancer Metabolism to Improve Outcomes with Immune Checkpoint Inhibitors.Journal of immunotherapy and precision oncology · 2023
    Review
  19. Review
  20. Article

1 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

8 authors at 2 institutions in 2 countries.

James C Geoghegana Department of Antibody Discovery and Protein Engineering , MedImmune LLC , Gaithersburg , MD , USA.
Gundo Diedricha Department of Antibody Discovery and Protein Engineering , MedImmune LLC , Gaithersburg , MD , USA.
Xiaojun Lub Department of Analytical Biotechnology , MedImmune LLC , Gaithersburg , MD , USA.
Kim Rosenthala Department of Antibody Discovery and Protein Engineering , MedImmune LLC , Gaithersburg , MD , USA.
Kris F Sachsenmeierc Department of Oncology Research , MedImmune LLC , Gaithersburg , MD , USA.
Herren Wua Department of Antibody Discovery and Protein Engineering , MedImmune LLC , Gaithersburg , MD , USA.
William F Dall'Acquaa Department of Antibody Discovery and Protein Engineering , MedImmune LLC , Gaithersburg , MD , USA.
Melissa M Damschrodera Department of Antibody Discovery and Protein Engineering , MedImmune LLC , Gaithersburg , MD , USA.
AstraZeneca (Germany) · DEAltimmune (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

CD73 (ecto-5'-nucleotidase) has recently been established as a promising immuno-oncology target. Given its role in activating purinergic signaling pathways to elicit immune suppression, antagonizing CD73 (i.e., releasing the brake) offers a complimentary pathway to inducing anti-tumor immune responses. Here, we describe the mechanistic activity of a new clinical therapeutic, MEDI9447, a human monoclonal antibody that non-competitively inhibits CD73 activity. Epitope mapping, structural, and mechanistic studies revealed that MEDI9447 antagonizes CD73 through dual mechanisms of inter-CD73 dimer crosslinking and/or steric blocking that prevent CD73 from adopting a catalytically active conformation. To our knowledge, this is the first report of an antibody that inhibits an enzyme's function through 2 distinct modes of action. These results provide a finely mapped epitope that can be targeted for selective, potent, and non-competitive inhibition of CD73, as well as establish a strategy for inhibiting enzymes that function in both membrane-bound and soluble states.

Indexed as

5'-NucleotidaseAdenosine MonophosphateAntibodies, MonoclonalAntineoplastic AgentsEnzyme InhibitorsGPI-Linked ProteinsHumansHydrolysis5'-NucleotidaseAdenosine MonophosphateAntibodies, MonoclonalAntineoplastic AgentsEnzyme InhibitorsGPI-Linked ProteinsNT5E protein, humanCD73epitope mappinghydrogen deuterium exchangeimmuno-oncologymonoclonal antibody

Identifiers

PMID26854859
PMCPMC5037986
OpenAlexW2270180142

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.