Evidence map›Paper›PMID 34731180›Full record

ArticlePloS one2021

The glutaminase inhibitor telaglenastat enhances the antitumor activity of signal transduction inhibitors everolimus and cabozantinib in models of renal cell carcinoma.

Ethan Emberley, Alison Pan, Jason Chen, Rosalyn Dang, Matt Gross, Tony Huang, Weiqun Li, Andrew MacKinnon, Devansh Singh, Natalija Sotirovska and 3 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.5field-weighted citation impact, top 9% 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

33 citing papers in PubMed, 47 citations in OpenAlex.

  1. Results of the Phase I/II Study and Preliminary B-cell Gene Signature of Combined Inhibition of Glutamine Metabolism and EGFR in Colorectal Cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2025
    Trial
  2. Telaglenastat plus Everolimus in Advanced Renal Cell Carcinoma: A Randomized, Double-Blinded, Placebo-Controlled, Phase II ENTRATA Trial.Clinical cancer research : an official journal of the American Association for Cancer Research · 2022
    Trial
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  8. Systematic and precise interventions for KRAS-mutant cancers.Experimental hematology & oncology · 2026
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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

13 authors at 1 institution in 1 country.

Ethan EmberleyCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Alison PanCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Jason ChenCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Rosalyn DangCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Matt GrossCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Tony HuangCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Weiqun LiCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Andrew MacKinnonCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Devansh SinghCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Natalija SotirovskaCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Susanne M SteggerdaCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Tracy WangCalithera Biosciences, Inc., South San Francisco, CA, United States of America.
Francesco ParlatiCalithera Biosciences, Inc., South San Francisco, CA, United States of America.ORCID 0000-0002-1130-6721
Calithera (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Dysregulated metabolism is a hallmark of cancer that manifests through alterations in bioenergetic and biosynthetic pathways to enable tumor cell proliferation and survival. Tumor cells exhibit high rates of glycolysis, a phenomenon known as the Warburg effect, and an increase in glutamine consumption to support the tricarboxylic acid (TCA) cycle. Renal cell carcinoma (RCC) tumors express high levels of glutaminase (GLS), the enzyme required for the first step in metabolic conversion of glutamine to glutamate and the entry of glutamine into the TCA cycle. We found that RCC cells are highly dependent on glutamine for proliferation, and this dependence strongly correlated with sensitivity to telaglenstat (CB-839), an investigational, first-in-class, selective, orally bioavailable GLS inhibitor. Metabolic profiling of RCC cell lines treated with telaglenastat revealed a decrease in glutamine consumption, which was concomitant with a decrease in the production of glutamate and other glutamine-derived metabolites, consistent with GLS inhibition. Treatment of RCC cells with signal transduction inhibitors everolimus (mTOR inhibitor) or cabozantinib (VEGFR/MET/AXL inhibitor) in combination with telaglenastat resulted in decreased consumption of both glucose and glutamine and synergistic anti-proliferative effects. Treatment of mice bearing Caki-1 RCC xenograft tumors with cabozantinib plus telaglenastat resulted in reduced tumor growth compared to either agent alone. Enhanced anti-tumor activity was also observed with the combination of everolimus plus telaglenastat. Collectively, our results demonstrate potent, synergistic, anti-tumor activity of telaglenastat plus signal transduction inhibitors cabozantinib or everolimus via a mechanism involving dual inhibition of glucose and glutamine consumption.

Indexed as

AnilidesAnimalsBenzeneacetamidesCarcinoma, Renal CellCell Line, TumorCell ProliferationCell SurvivalDrug SynergismEverolimusFemaleGene Expression Regulation, NeoplasticGlucoseGlutaminaseGlutamineHumansKidney NeoplasmsAnilidesBenzeneacetamidescabozantinibCB-839EverolimusGLS protein, humanGlucoseGlutaminaseGlutaminePyridinesThiadiazoles

Identifiers

PMID34731180
PMCPMC8565744
OpenAlexW3210592062

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.