Evidence map›Paper›PMID 18519811›Full record

Trial reportBlood2008

Depletion of human regulatory T cells specifically enhances antigen-specific immune responses to cancer vaccines.

Michael A Morse, Amy C Hobeika, Takuya Osada, Delila Serra, Donna Niedzwiecki, H Kim Lyerly, Timothy M Clay

Open access · bronzeAbstract readClinical Trial
In one paragraph

Trial report in Blood, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 144 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
144citing papers in PubMed, 2 pooled it
14.2field-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

144 citing papers in PubMed, 2 syntheses or guidelines pooled it, 293 citations in OpenAlex.

  1. Pooled it
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  13. Article
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  18. Engineering mRNA CAR-T Cells for Cancer Immunotherapy.Methods in molecular biology (Clifton, N.J.) · 2025
    Article
  19. Review
  20. Review

84 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.

Michael A MorseDepartment ofMedicine, Duke University Medical Center, Durham, NC 27710, USA. morse004@mc.duke.edu
Amy C Hobeika
Takuya Osada
Delila Serra
Donna Niedzwiecki
H Kim Lyerly
Timothy M Clay
Duke Medical Center · US

Funding

RNA TRASFECTED DENDRITIC CELLS FOR CANCER IMMUNOTHERAPYP01CA078673 · NCI · DUKE UNIVERSITY · PI MORSE, MICHAEL A · 1999 to 2008
$13.2M
Vaccination with Regulatory T Cell DepletionR21CA117126 · NCI · DUKE UNIVERSITY · PI MORSE, MICHAEL A · 2006 to 2007
$435k
NCI NIH HHS 1R21-CA117126-01A1NCI NIH HHS 5P0L-CA078673NCI NIH HHS P01 CA078673NCI NIH HHS R21 CA117126
6 · The paper itself

Abstract

CD4(+)CD25(high)FoxP3(+) regulatory T (Treg) cells limit antigen-specific immune responses and are a cause of suppressed anticancer immunity. In preclinical and clinical studies, we assessed the immune consequences of FoxP3(+) Treg-cell depletion in patients with advanced malignancies. We demonstrated that a CD25(high) targeting immunotoxin (denileukin diftitox) depleted FoxP3(+) Treg cells, decreased Treg-cell function, and enhanced antigen-specific T-cell responses in vitro. We then attempted to enhance antitumor immune responses in patients with carcinoembryonic antigen (CEA)-expressing malignancies by Treg-cell depletion. In a pilot study (n = 15), denileukin diftitox, given as a single dose or repeated dosing, was followed by immunizations with dendritic cells modified with the fowlpox vector rF-CEA(6D)-TRICOM. By flow cytometric analysis, we report the first direct evidence that circulating CD4(+)CD25(high)FoxP3(+) Treg cells are depleted after multiple doses of denileukin diftitox. Earlier induction of, and overall greater exposure to, the T-cell response to CEA was observed in the multiple-dose group, but not the single-dose group. These results indicate the potential for combining Treg-cell depletion with anticancer vaccines to enhance tumor antigen-specific immune responses and the need to explore dose and schedule of Treg depletion strategies in optimizing vaccine efforts.

Indexed as

T-Lymphocytes, RegulatoryAntigens, NeoplasmCancer VaccinesCarcinoembryonic AntigenDendritic CellsDiphtheria ToxinHumansImmunityImmunotherapy, AdoptiveInterleukin-2Lymphocyte DepletionPilot ProjectsRecombinant Fusion ProteinsTreatment OutcomeAntigens, NeoplasmCancer VaccinesCarcinoembryonic Antigendenileukin diftitoxDiphtheria ToxinInterleukin-2Recombinant Fusion Proteins

Identifiers

PMID18519811
PMCPMC2481547
OpenAlexW2034625094

What OpenQuestion holds

Textmetadata
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.