Evidence map›Paper›PMID 25393368›Full record

ArticleBritish journal of cancer2014

A Phase I study of cyclin-dependent kinase inhibitor, AT7519, in patients with advanced cancer: NCIC Clinical Trials Group IND 177.

E X Chen, S Hotte, H Hirte, L L Siu, J Lyons, M Squires, S Lovell, S Turner, L McIntosh, L Seymour

Registry-linked trialOpen access · hybridAbstract readClinical Trial, Phase I
In one paragraph

Article in British journal of cancer, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00390117 (A Phase I Study of AT7519M Given Twice Weekly in Patients With Advanced Incurable Malignancy), which is not on this map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.3field-weighted citation impact, top 12% 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.

NCT00390117 phase1completednot on this map

A Phase I Study of AT7519M Given Twice Weekly in Patients With Advanced Incurable Malignancy

TypeinterventionalSponsorNCIC Clinical Trials GroupRan2007 to 2013Enrolled34ConditionsLymphoma, Unspecified Adult Solid Tumor, Protocol SpecificArmsCDKI AT7519, laboratory biomarker analysis
3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 68 citations in OpenAlex.

  1. A patent review of cyclin-dependent kinase 5 (CDK5) inhibitors (1999-2025).Frontiers in bioengineering and biotechnology · 2026
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  13. Global Phosphoproteomics Reveal CDK Suppression as a Vulnerability to KRas Addiction in Pancreatic Cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2021
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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 2 institutions in 1 country.

E X ChenPrincess Margaret Cancer Centre, University Health Network, Room 5-719, 610 University Avenue, Toronto, Ontario, Canada.
S HotteJuravinski Cancer Centre, Hamilton Health Sciences, Hamilton, Ontario, Canada.
H HirteJuravinski Cancer Centre, Hamilton Health Sciences, Hamilton, Ontario, Canada.
L L SiuPrincess Margaret Cancer Centre, University Health Network, Room 5-719, 610 University Avenue, Toronto, Ontario, Canada.
J LyonsAstex Pharmaceutics, Cambridge, UK.
M SquiresAstex Pharmaceutics, Cambridge, UK.
S LovellPrincess Margaret Cancer Centre, University Health Network, Room 5-719, 610 University Avenue, Toronto, Ontario, Canada.
S TurnerJuravinski Cancer Centre, Hamilton Health Sciences, Hamilton, Ontario, Canada.
L McIntoshNCIC Clinical Trials Group, Kingston, Ontario, Canada.
L SeymourNCIC Clinical Trials Group, Kingston, Ontario, Canada.
Juravinski Cancer Centre · CAHamilton Health Sciences · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAT7519 is a small-molecular inhibitor of multiple cyclin-dependent kinases (CDKs). It shows encouraging anti-cancer activity against multiple cell lines and in tumour xenografts. This phase I study was conducted to evaluate the safety and tolerability of AT7519 given as 1-h intravenous infusion on days 1, 4, 8 and 11 every 3 weeks.

methodsPatients with advanced refractory solid tumours or non-Hodgkin's lymphoma were enroled. Dose escalation occurred in a 3+3 manner based on toxicity assessment. Pharmacokinetic samples were collected after first AT7519 infusion, whereas pharmacodynamics (PD) samples were obtained in selected patients.

resultsThirty-four patients were enroled, and 32 received study treatments over 4 dose levels. Dose-limiting toxicities included mucositis, febrile neutropenia, rash, fatigue and hypokalemia. The recommended phase II dose (RP2D) was 27.0 mg m(-2). Ten of 19 patients evaluable for efficacy had stable disease as the best response (median duration: 3.3 months; range: 2.5 to 11.1 months). There was no clinically significant QTc prolongation. There was an apparent dose proportional increase in AT7519 exposure. The PD studies showed reduction in markers of CDK activity in selected patients' skin biopsies post treatment.

conclusionsAT7519, when administered as an intravenous infusion on days 1, 4, 8 and 11, was well tolerated. The RP2D is 27.0 mg m(-2). At this dose level, plasma AT7519 concentrations were above the biologically active concentrations, and preliminary anti-cancer activity was observed in patients. This dosing schedule is being further evaluated in multiple phase II studies.

Indexed as

AdultAgedCyclin-Dependent KinasesDose-Response Relationship, DrugFemaleHumansMaleMiddle AgedNeoplasmsPiperidinesProtein Kinase InhibitorsPyrazoles4-(2,6-dichlorobenzoylamino)-1H-pyrazole-3-carboxylic acid piperidin-4-ylamideCyclin-Dependent KinasesPiperidinesProtein Kinase InhibitorsPyrazoles

Identifiers

PMID25393368
PMCPMC4264455
OpenAlexW1975186639

What OpenQuestion holds

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LicenceCC BY-NC-SA
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Registered trials

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.