Evidence map›Paper›PMID 26719539›Full record

ArticleCancer research2016

Neutralization of Tumor Acidity Improves Antitumor Responses to Immunotherapy.

Shari Pilon-Thomas, Krithika N Kodumudi, Asmaa E El-Kenawi, Shonagh Russell, Amy M Weber, Kimberly Luddy, Mehdi Damaghi, Jonathan W Wojtkowiak, James J Mulé, Arig Ibrahim-Hashim and 1 more

Erratum issued Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Cancer research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT04321161 (Analysis of T Cell Metabolism and Immune Phenotype in Relapsed Acute Myeloid Leukemia Patients Receiving Donor Lymphocyte Infusions and Bicanorm), which is not on this map. Cited by 364 papers.

0numbers the graph read from it
0cells of the map it votes in
364citing papers in PubMed
22.5field-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.

NCT04321161 early_phase1completednot on this mapstarted 2020, after this paper: background citation

Analysis of T Cell Metabolism and Immune Phenotype in Relapsed Acute Myeloid Leukemia Patients Receiving Donor Lymphocyte Infusions and Bicanorm (Sodium Bicarbonate)

TypeinterventionalSponsorUniversity of FreiburgRan2020 to 2020Enrolled10ConditionsAcute Myeloid Leukemia, in RelapseArmsBicanorm
3 · Its place in the literature

Who cites it

364 citing papers in PubMed, 572 citations in OpenAlex.

  1. Review
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  5. Multimodal Imaging of Hypoxia, Metabolism and pH in Feline Sarcoma Using HyperpolarizedAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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304 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 2 institutions in 2 countries.

Shari Pilon-ThomasDepartment of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
Krithika N KodumudiDepartment of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
Asmaa E El-KenawiDepartment of Cancer Imaging and Metabolism, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida. Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt.
Shonagh RussellDepartment of Cancer Imaging and Metabolism, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
Amy M WeberDepartment of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
Kimberly LuddyDepartment of Cancer Imaging and Metabolism, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
Mehdi DamaghiDepartment of Cancer Imaging and Metabolism, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
Jonathan W WojtkowiakDepartment of Cancer Imaging and Metabolism, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
James J MuléDepartment of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
Arig Ibrahim-HashimDepartment of Cancer Imaging and Metabolism, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida.
Robert J GilliesDepartment of Cancer Imaging and Metabolism, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida. Robert.Gillies@moffitt.org.
Moffitt Cancer Center · USMansoura University · EG

Funding

TRANSLATIONAL RESEARCHP30CA076292 · NCI · UNIVERSITY OF SOUTH FLORIDA · PI KENNETH Lynn WRIGHT · 1998 to 2026
$93.5M
"Research Supplement to Promote Diversity in Health-Related Research", as part of Moffitt PS-OC, "Cancer as a Complex adaptive System"U54CA193489 · NCI · H. LEE MOFFITT CANCER CTR & RES INST · PI ANDERSON, ALEXANDER ROBERTSON ALLAN, GATENBY, ROBERT A · 2015 to 2020
$12.5M
Causes & Consequences of Acid pH in TumorsR01CA077575 · NCI · UNIVERSITY OF ARIZONA · PI GILLIES, ROBERT J. · 1999 to 2018
$8.5M
Tissue, Pathology and BioinformaticsP50CA168536 · NCI · H. LEE MOFFITT CANCER CTR & RES INST · PI MULE, JAMES J. · 2013 to 2017
$8.5M
NCI NIH HHS P30 CA076292NCI NIH HHS P30CA076292NCI NIH HHS P50 CA168536NCI NIH HHS P50CA168536NCI NIH HHS R01 CA077575NCI NIH HHS R01CA077575NCI NIH HHS U54 CA193489
6 · The paper itself

Abstract

Cancer immunotherapies, such as immune checkpoint blockade or adoptive T-cell transfer, can lead to durable responses in the clinic, but response rates remain low due to undefined suppression mechanisms. Solid tumors are characterized by a highly acidic microenvironment that might blunt the effectiveness of antitumor immunity. In this study, we directly investigated the effects of tumor acidity on the efficacy of immunotherapy. An acidic pH environment blocked T-cell activation and limited glycolysis in vitro. IFNγ release blocked by acidic pH did not occur at the level of steady-state mRNA, implying that the effect of acidity was posttranslational. Acidification did not affect cytoplasmic pH, suggesting that signals transduced by external acidity were likely mediated by specific acid-sensing receptors, four of which are expressed by T cells. Notably, neutralizing tumor acidity with bicarbonate monotherapy impaired the growth of some cancer types in mice where it was associated with increased T-cell infiltration. Furthermore, combining bicarbonate therapy with anti-CTLA-4, anti-PD1, or adoptive T-cell transfer improved antitumor responses in multiple models, including cures in some subjects. Overall, our findings show how raising intratumoral pH through oral buffers therapy can improve responses to immunotherapy, with the potential for immediate clinical translation.

Indexed as

AnimalsAntibodiesAntineoplastic AgentsBicarbonatesCell Line, TumorCTLA-4 AntigenFemaleHydrogen-Ion ConcentrationImmunotherapyLymphocyte ActivationMiceMice, Inbred C57BLProgrammed Cell Death 1 ReceptorT-LymphocytesTumor MicroenvironmentAntibodiesAntineoplastic AgentsBicarbonatesCTLA-4 AntigenProgrammed Cell Death 1 Receptor

Identifiers

PMID26719539
PMCPMC4829106
OpenAlexW2291579888

What OpenQuestion holds

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Registered trials

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.