Evidence map›Paper›PMID 17458505›Full record

ArticleInvestigational new drugs2007

Phase I dose escalation and pharmacokinetic study of AZD2171, an inhibitor of the vascular endothelial growth factor receptor tyrosine kinase, in patients with hormone refractory prostate cancer (HRPC).

Charles J Ryan, Walter M Stadler, Bruce Roth, Douglass Hutcheon, Shauna Conry, Thomas Puchalski, Charles Morris, Eric J Small

Abstract readClinical Trial, Phase I
PubMed Publisher
In one paragraph

Article in Investigational new drugs, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
4.2field-weighted citation impact, top 5% 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

35 citing papers in PubMed, 69 citations in OpenAlex.

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  14. A phase I trial and PK study of cediranib (AZD2171), an orally bioavailable pan-VEGFR inhibitor, in children with recurrent or refractory primary CNS tumors.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2015
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  19. Targeting angiogenesis for the treatment of prostate cancer.Expert opinion on therapeutic targets · 2012
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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

8 authors at 5 institutions in 2 countries.

Charles J RyanUrologic Oncology Program, UCSF Comprehensive Cancer Center, 1600 Divisadero-3rd Floor, San Francisco, CA, USA. ryanc@medicine.ucsf.edu
Walter M Stadler
Bruce Roth
Douglass Hutcheon
Shauna Conry
Thomas Puchalski
Charles Morris
Eric J Small
UCSF Helen Diller Family Comprehensive Cancer Center · USAstraZeneca (Brazil) · BRAstraZeneca (United States) · USUniversity of Illinois Chicago · USVanderbilt University Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To explore the pharmacokinetics and tolerability of AZD2171, an inhibitor of vascular endothelial growth factor receptors 1 and 2, in patients with hormone refractory prostate cancer. Twenty-six patients received oral daily dosing of AZD2171 at 1, 2.5, 5, 10, 20, 30 mg. The maximum tolerated dose (MTD) was defined as the dose below that at which >or=33% of patients experienced a dose-limiting toxicity (DLT) within 21 days of initiating therapy. Pharmacokinetic analysis was performed. DLTs occurred at the 30 mg dose and included grade 3 events in three patients: fatigue (n = 3) and muscle weakness (n = 2). The pharmacokinetic profile revealed an effective half-life of approximately 27 h. At steady state, the unbound drug concentration was 4.4 times above the concentration required to inhibit endothelial cell proliferation in vitro. Four patients experienced PSA reductions within 30 days following drug discontinuation (one on 2.5 mg, two on 20 mg and 1 on 30 mg). In two patients treated with 20 mg, post therapy PSA declines persisted for >17 months, despite a PSA increase on therapy. Resolution of adenopathy occurred in one patient persisting for >17 months. Plasma concentrations were maximum 2-8 h post dosing with an overall median value of 2 h. The dose of 20 mg daily was declared as the MTD. One objective response and several PSA declines following the discontinuation of therapy for toxicity suggest that evidence of clinical efficacy may be delayed. While further study is indicated, careful attention must be paid to the novel toxicities of this agent with prolonged dosing.

Indexed as

AgedAged, 80 and overAngiogenesis InhibitorsAntineoplastic AgentsHumansIndolesMaleMaximum Tolerated DoseMiddle AgedProstate-Specific AntigenProstatic NeoplasmsProtein-Tyrosine KinasesQuinazolinesVascular Endothelial Growth Factor Receptor-1Angiogenesis InhibitorsAntineoplastic AgentscediranibFLT1 protein, humanIndolesProstate-Specific AntigenProtein-Tyrosine KinasesQuinazolinesVascular Endothelial Growth Factor Receptor-1

Identifiers

PMID17458505
OpenAlexW2084863129

What OpenQuestion holds

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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.