Evidence map›Paper›PMID 25221644›Full record

ArticleGenes & cancer2014

CDK4/6 inhibition provides a potent adjunct to Her2-targeted therapies in preclinical breast cancer models.

Agnieszka K Witkiewicz, Derek Cox, Erik S Knudsen

Erratum issuedOpen access · diamondAbstract read
In one paragraph

Article in Genes & cancer, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 67 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 1 pooled it
7.2field-weighted citation impact, top 2% 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

67 citing papers in PubMed, 1 synthesis or guideline pooled it, 122 citations in OpenAlex.

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  14. Safety and Efficacy of Tucatinib, Letrozole, and Palbociclib in Patients with Previously Treated HR+/HER2+ Breast Cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2023
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7 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Agnieszka K WitkiewiczDepartment of Pathology, Simmons Cancer Center, Dalls, TX ; Department of Pathology, UT Southwestern, Dallas, TX.
Derek CoxDepartment of Pathology, Simmons Cancer Center, Dalls, TX.
Erik S KnudsenDepartment of Pathology, Simmons Cancer Center, Dalls, TX ; Department of Pathology, UT Southwestern, Dallas, TX.
Simmons University · USThe University of Texas Southwestern Medical Center · US

Funding

Impact of ErbB2 and RB Pathways on DCIS Progression and TreatmentR01CA163863 · NCI · UT SOUTHWESTERN MEDICAL CENTER · PI WITKIEWICZ, AGNIESZKA · 2012 to 2016
$1.6M
NCI NIH HHS R01 CA163863
6 · The paper itself

Abstract

In spite of the efficacy of Her2-targeted therapies, recurrence and progression remain a challenge for treatment of Her2 positive breast cancer. CDK4/6 controls pathway downstream of Her2, Inhibition of these kinases could represent an important therapeutic approach to augment the effectiveness of standard therapies. In models of acquired resistance to Her2-targeted therapies, Cyclin D1 was inappropriately activated and CDK4/6 inhibition was effective at blocking proliferation by targeting this common pathway associated with resistance. These data were recapitulated in Her2 positive xenografts. Furthermore, in a series of 35 primary breast tumor explants, treatment with PD-0332991 resulted in a greater than 4-fold suppression of the Ki67. The effects of CDK4/6 inhibition were dependent on an intact RB-pathway, and consonantly, loss of RB and high-levels of p16 were associated with resistance to CDK4/6 inhibition. Combination studies illustrated that CDK4/6 inhibition is cooperative with multiple Her2-targeted agents and provides a complementary mechanism of action to T-DM1 to efficiently suppresses the proliferation of residual Her2-positive tumor cell populations that survive T-DM1. Together, these data indicate CDK4/6 is a viable therapeutic target that functions downstream of Her2, and tissue based markers are available to direct rational utilization of CDK4/6 inhibitors in combination with Her2-targeted agents.

Indexed as

CDK4HER2PalbocicllbRBT-DM1

Identifiers

PMID25221644
PMCPMC4162138
OpenAlexW4232629473

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.