Evidence map›Paper›PMID 30206370›Full record

ArticleBritish journal of cancer2018

Carbonic anhydrase IX is a pH-stat that sets an acidic tumour extracellular pH in vivo.

Shen-Han Lee, Dominick McIntyre, Davina Honess, Alzbeta Hulikova, Jesús Pacheco-Torres, Sebastián Cerdán, Pawel Swietach, Adrian L Harris, John R Griffiths

Open access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 3 pooled it
6.2field-weighted citation impact, top 3% 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

76 citing papers in PubMed, 3 syntheses or guidelines pooled it, 121 citations in OpenAlex.

  1. High IntratumoralInternational journal of molecular sciences · 2026
    Pooled it
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  4. Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Introduction to Carbonic Anhydrase.Sub-cellular biochemistry · 2026
    Review
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  12. Review
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  14. Article
  15. Carbonic anhydrase IX promotes acute lung injury and mortality in females during metabolic acidosis and pneumonia.American journal of physiology. Lung cellular and molecular physiology · 2025
    Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article

16 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

9 authors at 6 institutions in 4 countries.

Shen-Han LeeCancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge, CB2 0RE, UK.
Dominick McIntyreCancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge, CB2 0RE, UK.
Davina HonessCancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge, CB2 0RE, UK.
Alzbeta HulikovaDepartment of Physiology, Anatomy & Genetics, University of Oxford, Parks Road, Oxford, OX1 3PT, UK.
Jesús Pacheco-TorresDivision of Cancer Imaging Research, The Johns Hopkins University School of Medicine, 720 Rutland Avenue, Traylor 211, Baltimore, MD, 21205, USA.
Sebastián CerdánInstituto de Investigaciones Biomédicas "Alberto Sols", c/ Arturo Duperier 4, Madrid, 28029, Spain.
Pawel SwietachDepartment of Physiology, Anatomy & Genetics, University of Oxford, Parks Road, Oxford, OX1 3PT, UK.
Adrian L HarrisWeatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, OX3 9DS, UK.ORCID http://orcid.org/0000-0003-1376-8409
John R GriffithsCancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge, CB2 0RE, UK. john.griffiths@cruk.cam.ac.uk.
University of Cambridge · GBUniversity of Oxford · GBInstituto de Investigaciones Biomédicas Sols-Morreale · ESJohn Radcliffe Hospital · GBJohns Hopkins University · USSingHealth · SG

Funding

Cancer Research UK 11562Cancer Research UK 25827Cancer Research UK C14303/A17197
6 · The paper itself

Abstract

backgroundTumour carbonic anhydrase IX (CAIX), a hypoxia-inducible tumour-associated cell surface enzyme, is thought to acidify the tumour microenvironment by hydrating CO

methodsWe used

resultsCAIX-expressing tumours had 0.15 pH-unit lower median extracellular pH than control tumours (pH 6.71 tumour vs pH 6.86 control, P = 0.01). Importantly, CAIX expression imposed an upper limit for tumour extracellular pH at 6.93. Despite the increased lactate concentration in CAIX-expressing tumours,

conclusionsCAIX acidifies the tumour microenvironment, and also provides an extracellular pH control mechanism. We propose that CAIX thus acts as an extracellular pH-stat, maintaining an acidic tumour extracellular pH that is tolerated by cancer cells and favours invasion and metastasis.

Indexed as

AnimalsAntigens, NeoplasmCarbonic Anhydrase IXCell HypoxiaCell ProliferationColorectal NeoplasmsHCT116 CellsHumansImidazolesLactic AcidMiceNeoplasm TransplantationProton Magnetic Resonance SpectroscopyTumor MicroenvironmentAntigens, NeoplasmCA9 protein, humanCarbonic Anhydrase IXimidazoleacetic acidImidazolesLactic Acid

Identifiers

PMID30206370
PMCPMC6162214
OpenAlexW2891476079

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.