Evidence map›Paper›PMID 34601813›Full record

ArticleMolecular oncology2021

BRCA1 promoter hypermethylation on circulating tumor DNA correlates with improved survival of patients with ovarian cancer.

Maha Elazezy, Katharina Prieske, Lan Kluwe, Leticia Oliveira-Ferrer, Sven Peine, Volkmar Müller, Linn Woelber, Barbara Schmalfeldt, Klaus Pantel, Simon A Joosse

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
1.1field-weighted citation impact, top 24% 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, 23 citations in OpenAlex.

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  19. Ovarian Cancer Diagnosis and Prognosis Based on Cell-Free DNA Methylation.Cancer control : journal of the Moffitt Cancer Center
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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

10 authors at 1 institution in 1 country.

Maha ElazezyDepartment of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.ORCID 0000-0001-9110-8153
Katharina PrieskeDepartment of Gynecology and Gynecologic Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Lan KluweDepartment of Oral and Maxillofacial Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Leticia Oliveira-FerrerDepartment of Gynecology and Gynecologic Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.ORCID 0000-0002-9075-0280
Sven PeineDepartment of Transfusion Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Volkmar MüllerDepartment of Gynecology and Gynecologic Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Linn WoelberDepartment of Gynecology and Gynecologic Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Barbara SchmalfeldtDepartment of Gynecology and Gynecologic Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Klaus PantelDepartment of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Simon A JoosseDepartment of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.ORCID 0000-0002-4296-5615
Universität Hamburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Methylation of the BRCA1 promoter is an epigenetic gene expression regulator and is frequently observed in ovarian cancer; however, conversion of methylation status is thought to drive disease recurrence. Therefore, longitudinal monitoring of methylation status by liquid biopsy in cell-free DNA may be a predictive marker. In total, 135 plasma samples were collected from 69 ovarian cancer patients before and during systemic treatment. Our liquid biopsy assay could detect down to a single molecule of methylated DNA in a high background of normal DNA (0.03%) with perfect specificity in control samples. We found that 60% of the cancer patients exhibited BRCA1 promoter hypermethylation at one point, although 24% lost hypermethylation during treatment. Multivariate survival analyses indicate that relapses are independent events and that hypermethylation and methylation conversion are independently correlated to longer relapse-free survival. We present a highly sensitive and specific methylation-specific quantitative PCR-based liquid biopsy assay. BRCA1 promoter hypermethylation is frequently found in ovarian cancer and is often reversed upon recurrence, indicating the selection of therapy-resistant clones and unfavorable clinical outcome.

Indexed as

BRCA1 ProteinCirculating Tumor DNADNA MethylationOvarian NeoplasmsCarcinoma, Ovarian EpithelialFemaleHumansPromoter Regions, GeneticBRCA1 ProteinBRCA1 protein, humanCirculating Tumor DNABRCA1ctDNAliquid biopsyMS-qPCR

Identifiers

PMID34601813
PMCPMC8637552
OpenAlexW3202739255

What OpenQuestion holds

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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.