Evidence map›Paper›PMID 19457253›Full record

Trial reportJournal of translational medicine2009

CTLA4 blockade increases Th17 cells in patients with metastatic melanoma.

Erika von Euw, Thinle Chodon, Narsis Attar, Jason Jalil, Richard C Koya, Begonya Comin-Anduix, Antoni Ribas

Registry-linked trialOpen access · goldAbstract readClinical Trial
In one paragraph

Trial report in Journal of translational medicine, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00471887 (A Phase II, Open-Label, Single Arm Clinical Trial to Study the Mechanism of Action of CP-675,206 in Patients With In-Transit and Metastatic Melanoma Amenable to Repeated Outpatient Tumor Biopsies), which is not on this map. Cited by 100 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed, 2 pooled it
5.0field-weighted citation impact, top 4% 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.

NCT00471887 phase2completednot on this map

A Phase II, Open-Label, Single Arm Clinical Trial to Study the Mechanism of Action of CP-675,206 in Patients With In-Transit and Metastatic Melanoma Amenable to Repeated Outpatient Tumor Biopsies

TypeinterventionalSponsorJonsson Comprehensive Cancer CenterRan2007 to 2015Enrolled32ConditionsMelanoma (Skin)ArmsCP-675,206
3 · Its place in the literature

Who cites it

100 citing papers in PubMed, 2 syntheses or guidelines pooled it, 188 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Trial
  4. Trial
  5. Review
  6. Article
  7. Gastritis: Pathophysiology, Diagnosis, and Clinical Implications.The Korean journal of helicobacter and upper gastrointestinal research · 2026
    Review
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  14. Review
  15. Immune-Mediated Liver Injury From Checkpoint Inhibitor: An Evolving Frontier With Emerging Challenges.Liver international : official journal of the International Association for the Study of the Liver · 2025
    Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article

40 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

7 authors at 1 institution in 1 country.

Erika von EuwDepartment of Surgery, Division of Surgical Oncology, University of California, Los Angeles, Los Angeles, California, USA. erivoneuw@yahoo.com.ar
Thinle Chodon
Narsis Attar
Jason Jalil
Richard C Koya
Begonya Comin-Anduix
Antoni Ribas
University of California, Los Angeles · US

Funding

Women's CancersP30CA016042 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Samuel Wheeler French · 1985 to 2026
$134.5M
ZDV &3TC NEVIRAPINE COMBINATION THERAPY IN HIV 1 INFECTED INFANTS &M01RR000865 · NCRR · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI WASHINGTON, ARNOLD E. · 1985 to 2011
$43.4M
Virology CoreP30AI028697 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI ANTON, PETER A · 1991 to 2018
$39.9M
Transductionally Redirected /Transcriptionally RestricteP50CA086306 · NCI · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI HERSCHMAN, HARVEY R. · 2000 to 2014
$29.0M
QUANTITATIVE IMAGE ANALYSIS SPECIALIZED RESOURCE COREU54CA119347 · NCI · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI HEATH, JAMES R. · 2005 to 2009
$17.8M
NCI NIH HHS CA-16042NCI NIH HHS P30 CA016042NCI NIH HHS P50 CA086306NCI NIH HHS U54 CA119347NCRR NIH HHS M01 RR000865NCRR NIH HHS M01-RR-0865NIAID NIH HHS AI-28697NIAID NIH HHS P30 AI028697
6 · The paper itself

Abstract

backgroundTh17 cells are CD4+ cells that produce interleukin 17 (IL-17) and are potent inducers of tissue inflammation and autoimmunity. We studied the levels of this T cell subset in peripheral blood of patients treated with the anti-CTLA4 antibody tremelimumab since its major dose limiting toxicities are inflammatory and autoimmune in nature.

methodsPeripheral blood mononuclear cells (PBMC) were collected before and after receiving tremelimumab within two clinical trials, one with tremelimumab alone (21 patients) and another together with autologous dendritic cells (DC) pulsed with the melanoma epitope MART-126-35 (6 patients). Cytokines were quantified directly in plasma from patients and after in vitro stimulation of PBMC. We also quantified IL-17 cytokine-producing cells by intracellular cytokine staining (ICS).

resultsThere were no significant changes in 13 assayed cytokines, including IL-17, when analyzing plasma samples obtained from patients before and after administration of tremelimumab. However, when PBMC were activated in vitro, IL-17 cytokine in cell culture supernatant and Th17 cells, detected as IL-17-producing CD4 cells by ICS, significantly increased in post-dosing samples. There were no differences in the levels of Th17 cells between patients with or without an objective tumor response, but samples from patients with inflammatory and autoimmune toxicities during the first cycle of therapy had a significant increase in Th17 cells.

conclusionThe anti-CTLA4 blocking antibody tremelimumab increases Th17 cells in peripheral blood of patients with metastatic melanoma. The relation between increases in Th17 cells and severe autoimmune toxicity after CTLA4 blockade may provide insights into the pathogenesis of anti-CTLA4-induced toxicities.

Indexed as

AdultAgedAged, 80 and overAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntigens, CDAutoimmunityCTLA-4 AntigenEnzyme-Linked Immunosorbent AssayFemaleHumansInterleukin-17Intracellular SpaceLymphocyte ActivationMaleMelanomaAntibodies, MonoclonalAntibodies, Monoclonal, HumanizedAntigens, CDCTLA-4 AntigenCTLA4 protein, humanInterleukin-17tremelimumab

Identifiers

PMID19457253
PMCPMC2697137
OpenAlexW2137712039

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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.