Evidence map›Paper›PMID 33513287›Full record

ArticleMolecular oncology2021

Promoter methylation of DNA homologous recombination genes is predictive of the responsiveness to PARP inhibitor treatment in testicular germ cell tumors.

João Lobo, Vera Constâncio, Catarina Guimarães-Teixeira, Pedro Leite-Silva, Vera Miranda-Gonçalves, José Pedro Sequeira, Laura Pistoni, Rita Guimarães, Mariana Cantante, Isaac Braga and 4 more

Open access · goldAbstract read
In one paragraph

Article in Molecular oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.6field-weighted citation impact, top 14% 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

19 citing papers in PubMed, 22 citations in OpenAlex.

  1. Trial
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  4. PARP Inhibitors in Genitourinary Cancer: A New Paradigm Beyond Prostate Cancer.International journal of urology : official journal of the Japanese Urological Association · 2025
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  6. Article
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  17. The component of the mJournal of experimental & clinical cancer research : CR · 2021
    Article
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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

14 authors at 4 institutions in 4 countries.

João LoboCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.ORCID 0000-0001-6829-1391
Vera ConstâncioCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.ORCID 0000-0002-3151-0367
Catarina Guimarães-TeixeiraCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.ORCID 0000-0003-2212-3872
Pedro Leite-SilvaCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.ORCID 0000-0001-7015-242X
Vera Miranda-GonçalvesCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.ORCID 0000-0002-4231-5532
José Pedro SequeiraCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.ORCID 0000-0002-4687-3347
Laura PistoniCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.
Rita GuimarãesCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.
Mariana CantanteCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.
Isaac BragaDepartment of Urology, Portuguese Oncology Institute of Porto (IPOP), Portugal.ORCID 0000-0001-9265-4324
Joaquina MaurícioDepartment of Medical Oncology, Portuguese Oncology Institute of Porto (IPOP), Portugal.
Leendert H J LooijengaPrincess Máxima Center for Pediatric Oncology, Utrecht, The Netherlands.ORCID 0000-0002-8146-1911
Rui HenriqueCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.ORCID 0000-0003-3171-4666
Carmen JerónimoCancer Biology and Epigenetics Group, IPO Porto Research Center (GEBC CI-IPOP), Portuguese Oncology Institute of Porto (IPO Porto) & Porto Comprehensive Cancer Center (P, CCC), Portugal.ORCID 0000-0003-4186-5345
Instituto Português de Oncologia Francisco Gentil · PTUniversidade do Porto · PTPrincess Máxima Center · NLUniversity of Pisa · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Testicular germ cell tumors (TGCTs) are the most common cancers in men aged 15-39 years and are divided into two major groups, seminomas and nonseminomas. Novel treatment options are required for these patients, to limit side effects of chemotherapy. We hypothesized that promoter methylation of relevant homologous recombination (HR) genes might be predictive of response to poly-ADP ribose polymerase inhibitors (PARPis) in TGCTs. We report a study pipeline combining in silico, in vitro, and clinical steps. By using several databases and in silico tools, we identified BRCA1, RAD51C, PALB2, RAD54B, and SYCP3 as the most relevant genes for further investigation and pinpointed specific CpG sites with pronounced negative correlation to gene expression. Nonseminomas displayed significantly higher methylation levels for all target genes, where increased methylation was observed in patients with more differentiated subtypes and higher disease burden. We independently performed second-line targeted validation in tissue series from TGCT patients. A moderate and/or strong anti-correlation between gene expression (assessed by RNA-sequencing) and promoter methylation (assessed by 450k array) was found, for all of the targets. As a proof of concept, we demonstrated the sensitivity of TGCT cell lines to Olaparib, which associated with differential methylation levels of a subset of targets, namely BRCA1 and RAD51C. Our findings support the use of HR genes promoter methylation as a predictor of the therapeutic response to PARPis in patients with TGCT.

Indexed as

DNA MethylationPromoter Regions, GeneticBRCA1 ProteinDNA-Binding ProteinsHomologous RecombinationHumansMaleNeoplasms, Germ Cell and EmbryonalPhthalazinesPiperazinesPoly(ADP-ribose) Polymerase InhibitorsTesticular NeoplasmsBRCA1 ProteinBRCA1 protein, humanDNA-Binding ProteinsolaparibPhthalazinesPiperazinesPoly(ADP-ribose) Polymerase InhibitorsRAD51C protein, humanDNA methylationDNA repairhomologous recombinationOlaparibPARP inhibitorstesticular germ cell tumors

Identifiers

PMID33513287
PMCPMC8024740
OpenAlexW3125962341

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.