Evidence map›Paper›PMID 31745297›Full record

ArticleOncogene2020

Chemotherapy impacts on the cellular response to CDK4/6 inhibition: distinct mechanisms of interaction and efficacy in models of pancreatic cancer.

Vishnu Kumarasamy, Amanda Ruiz, Ram Nambiar, Agnieszka K Witkiewicz, Erik S Knudsen

Open access · greenAbstract read
In one paragraph

Article in Oncogene, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.5field-weighted citation impact, top 9% 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

30 citing papers in PubMed, 41 citations in OpenAlex.

  1. Review
  2. Review
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  4. Article
  5. Ribociclib in Sequential Combination with Doxorubicin in Anthracycline-Naïve Advanced Soft-Tissue Sarcomas: Results of a Dose-Finding Phase Ib Study.Clinical cancer research : an official journal of the American Association for Cancer Research · 2025
    Article
  6. Review
  7. Article
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  12. Pharmacological modulation of RB1 activity mitigates resistance to neoadjuvant chemotherapy in locally advanced rectal cancer.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. The Role of CDK4 in the Pathogenesis of Pancreatic Cancer.Healthcare (Basel, Switzerland) · 2021
    Article
  19. Modeling pancreatic cancer in mice for experimental therapeutics.Biochimica et biophysica acta. Reviews on cancer · 2021
    Review
  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

5 authors at 2 institutions in 1 country.

Vishnu KumarasamyCenter for Personalized Medicine, Roswell Park Cancer Institute, Buffalo, NY, USA.
Amanda RuizArizona Cancer Center, University of Arizona, Tucson, AZ, USA.
Ram NambiarCenter for Personalized Medicine, Roswell Park Cancer Institute, Buffalo, NY, USA.
Agnieszka K WitkiewiczCenter for Personalized Medicine, Roswell Park Cancer Institute, Buffalo, NY, USA. Agnieszka.Witkiewicz@Roswellpark.org.
Erik S KnudsenCenter for Personalized Medicine, Roswell Park Cancer Institute, Buffalo, NY, USA. Erik.Knudsen@roswellpark.org.
Roswell Park Comprehensive Cancer Center · USUniversity of Arizona · US

Funding

Two-Spirit Films in Indigenous Cancer HealthP30CA016056 · NCI · ROSWELL PARK CANCER INSTITUTE CORP · PI MARK G FRATTINI · 1985 to 2026
$116.6M
Common Genetically Altered Pathways as Targets for Therapy in Pancreatic CancerR01CA211878 · NCI · UNIVERSITY OF ARIZONA · PI KNUDSEN, ERIK, WITKIEWICZ, AGNIESZKA · 2017 to 2021
$1.9M
NCI NIH HHS P30 CA016056NCI NIH HHS R01 CA211878
6 · The paper itself

Abstract

Pancreatic ductal adenocarcinoma (PDAC) is a therapy recalcitrant disease characterized by the aberrations in multiple genes that drive pathogenesis and limit therapeutic response. While CDK4/6 represents a downstream target of both KRAS mutation and loss of the CDKN2A tumor suppressor in PDAC, clinical and preclinical studies indicate that pharmacological CDK4/6 inhibitors are only modestly effective. Since chemotherapy represents the established backbone of PDAC treatment we evaluated the interaction of CDK4/6 inhibitors with gemcitabine and taxanes that are employed in the treatment of PDAC. Herein, we demonstrate that the difference in mechanisms of actions of chemotherapeutic agents elicit distinct effects on the cellular response to CDK4/6 inhibition. Gemcitabine largely ablates the function of CDK4/6 inhibition in S-phase arrested cells when administered contemporaneously; although, when cells recover from S-phase block they exhibit sensitivity to CDK4/6 inhibition. In contrast, pharmacological inhibition of CDK4/6 yields a cooperative cytostatic effect in combination with docetaxel and prevents adaptation and cell cycle re-entry, which is a common basis for resistance to such agents. Importantly, using organoid and PDX models we could confirm the cooperative effects between chemotherapy and CDK4/6 inhibition in vivo. These data indicate that the combination of cytotoxic and cytostatic agents could represent an important modality in those tumor types that are relatively resistant to CDK4/6 inhibitors.

Indexed as

AnimalsAntimetabolites, AntineoplasticApoptosisBiomarkers, TumorCell ProliferationCyclin-Dependent Kinase 4Cyclin-Dependent Kinase 6DeoxycytidineDrug Resistance, NeoplasmGemcitabineGene Expression Regulation, NeoplasticHumansMiceMice, Inbred NODMice, SCIDPancreatic NeoplasmsAntimetabolites, AntineoplasticBiomarkers, TumorCDK4 protein, humanCDK6 protein, humanCyclin-Dependent Kinase 4Cyclin-Dependent Kinase 6DeoxycytidineGemcitabine

Identifiers

PMID31745297
PMCPMC7047578
OpenAlexW2989917205

What OpenQuestion holds

Textmetadata
LicenceTDM
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.