Evidence map›Paper›PMID 22934253›Full record

ArticleOncoimmunology2012

Selective BRAF inhibition decreases tumor-resident lymphocyte frequencies in a mouse model of human melanoma.

Anna Hooijkaas, Jules Gadiot, Michelle Morrow, Ross Stewart, Ton Schumacher, Christian U Blank

Open access · goldAbstract read
In one paragraph

Article in Oncoimmunology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
4.6field-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.

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

50 citing papers in PubMed, 79 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Review
  8. Sustained release hydrogel for durable locoregional chemoimmunotherapy for BRAF-mutated melanoma.Journal of controlled release : official journal of the Controlled Release Society · 2023
    Article
  9. Review
  10. Review
  11. Article
  12. Review
  13. Anti-OX40 Antibody Directly Enhances The Function of Tumor-Reactive CD8Clinical cancer research : an official journal of the American Association for Cancer Research · 2019
    Article
  14. Article
  15. Article
  16. Review
  17. ΓJournal of oncology · 2019
    Review
  18. Article
  19. Oncogenic BRAFCancer research · 2018
    Article
  20. Article
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

6 authors at 3 institutions in 2 countries.

Anna HooijkaasDepartment of Immunology; The Netherlands Cancer Institute; Amsterdam, The Netherlands.
Jules Gadiot
Michelle Morrow
Ross Stewart
Ton Schumacher
Christian U Blank
The Netherlands Cancer Institute · NLAimmune Therapeutics (United Kingdom) · GBDutch Cancer Society · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The development of targeted therapies and immunotherapies has markedly advanced the treatment of metastasized melanoma. While treatment with selective BRAF(V600E) inhibitors (like vemurafenib or dabrafenib) leads to high response rates but short response duration, CTLA-4 blocking therapies induce sustained responses, but only in a limited number of patients. The combination of these diametric treatment approaches may further improve survival, but pre-clinical data concerning this approach is limited. We investigated, using Tyr::CreER(T2)PTEN(F-/-)BRAF(F-V600E/+) inducible melanoma mice, whether BRAF(V600E) inhibition can synergize with anti-CTLA-4 mAb treatment, focusing on the interaction between the BRAF(V600E) inhibitor PLX4720 and the immune system. While PLX4720 treatment strongly decreased tumor growth, it did not induce cell death in BRAF(V600E)/PTEN(-/-) melanomas. More strikingly, PLX4720 treatment led to a decreased frequency of tumor-resident T cells, NK-cells, MDSCs and macrophages, which could not be restored by the addition of anti-CTLA-4 mAb. As this effect was not observed upon treatment of BRAF wild-type B16F10 tumors, we conclude that the decreased frequency of immune cells correlates to BRAF(V600E) inhibition in tumor cells and is not due to an off-target effect of PLX4720 on immune cells. Furthermore, anti-CTLA-4 mAb treatment of inducible melanoma mice treated with PLX4720 did not result in enhanced tumor control, while anti-CTLA-4 mAb treatment did improve the effect of tumor-vaccination in B16F10-inoculated mice. Our data suggest that vemurafenib may negatively affect the immune activity within the tumor. Therefore, the potential effect of targeted therapy on the tumor-microenvironment should be taken into consideration in the design of clinical trials combining targeted and immunotherapy.

Identifiers

PMID22934253
PMCPMC3429565
OpenAlexW1986258970

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.