Evidence map›Paper›PMID 25712099›Full record

ArticleNucleic acids research2015

Ovarian carcinoma CDK12 mutations misregulate expression of DNA repair genes via deficient formation and function of the Cdk12/CycK complex.

Kingsley M Ekumi, Hana Paculova, Tina Lenasi, Vendula Pospichalova, Christian A Bösken, Jana Rybarikova, Vitezslav Bryja, Matthias Geyer, Dalibor Blazek, Matjaz Barboric

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed, 1 pooled it
5.9field-weighted citation impact, top 3% 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

82 citing papers in PubMed, 1 synthesis or guideline pooled it, 151 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Targeting CDKs in the RNAPII transcription cycle.Nature reviews. Drug discovery · 2026
    Review
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  6. Article
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  11. Defining CDK12 as a tumor suppressor and therapeutic target in mouse models of tubo-ovarian high-grade serous carcinoma.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Synthetic Lethal Targeting of CDK12-Deficient Prostate Cancer with PARP Inhibitors.Clinical cancer research : an official journal of the American Association for Cancer Research · 2024
    Article
  17. Article
  18. Article
  19. Review
  20. Article

22 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

10 authors at 5 institutions in 3 countries.

Kingsley M EkumiInstitute of Biomedicine, Biochemistry and Developmental Biology, University of Helsinki, Helsinki FIN-00014, Finland.
Hana PaculovaCentral European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic.
Tina LenasiInstitute of Biomedicine, Biochemistry and Developmental Biology, University of Helsinki, Helsinki FIN-00014, Finland.
Vendula PospichalovaInstitute of Experimental Biology, Faculty of Science, Masaryk University, 61137 Brno, Czech Republic.
Christian A BöskenCenter of Advanced European Studies and Research, Group Physical Biochemistry, 53175 Bonn, Germany.
Jana RybarikovaCentral European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic.
Vitezslav BryjaInstitute of Experimental Biology, Faculty of Science, Masaryk University, 61137 Brno, Czech Republic Institute of Biophysics, Academy of Sciences of the Czech Republic, 61265 Brno, Czech Republic.
Matthias GeyerCenter of Advanced European Studies and Research, Group Physical Biochemistry, 53175 Bonn, Germany.
Dalibor BlazekCentral European Institute of Technology (CEITEC), Masaryk University, 62500 Brno, Czech Republic dalibor.blazek@ceitec.muni.cz.
Matjaz BarboricInstitute of Biomedicine, Biochemistry and Developmental Biology, University of Helsinki, Helsinki FIN-00014, Finland matjaz.barboric@helsinki.fi.
University of Helsinki · FICenter of Advanced European Studies and Research · DECentral European Institute of Technology · CZMasaryk University · CZCentral European Institute of Technology – Masaryk University · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Cdk12/CycK complex promotes expression of a subset of RNA polymerase II genes, including those of the DNA damage response. CDK12 is among only nine genes with recurrent somatic mutations in high-grade serous ovarian carcinoma. However, the influence of these mutations on the Cdk12/CycK complex and their link to cancerogenesis remain ill-defined. Here, we show that most mutations prevent formation of the Cdk12/CycK complex, rendering the kinase inactive. By examining the mutations within the Cdk12/CycK structure, we find that they likely provoke structural rearrangements detrimental to Cdk12 activation. Our mRNA expression analysis of the patient samples containing the CDK12 mutations reveals coordinated downregulation of genes critical to the homologous recombination DNA repair pathway. Moreover, we establish that the Cdk12/CycK complex occupies these genes and promotes phosphorylation of RNA polymerase II at Ser2. Accordingly, we demonstrate that the mutant Cdk12 proteins fail to stimulate the faithful DNA double strand break repair via homologous recombination. Together, we provide the molecular basis of how mutated CDK12 ceases to function in ovarian carcinoma. We propose that CDK12 is a tumor suppressor of which the loss-of-function mutations may elicit defects in multiple DNA repair pathways, leading to genomic instability underlying the genesis of the cancer.

Indexed as

MutationAmino Acid SequenceBlotting, WesternCell Line, TumorCyclin-Dependent KinasesCyclinsDNA RepairFemaleGene Expression Regulation, NeoplasticHEK293 CellsHeLa CellsHumansModels, MolecularMolecular Sequence DataMultiprotein ComplexesOvarian NeoplasmsCCNK protein, humanCDK12 protein, humanCyclin-Dependent KinasesCyclinsMultiprotein Complexes

Identifiers

PMID25712099
PMCPMC4357706
OpenAlexW1976021822

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.