Evidence map›Paper›PMID 28710496›Full record

ArticleScientific reports2017

Dietary geranylgeraniol can limit the activity of pitavastatin as a potential treatment for drug-resistant ovarian cancer.

Elizabeth de Wolf, Marwan Ibrahim Abdullah, Stefanie M Jones, Karen Menezes, Darren M Moss, Falko P Drijfhout, Sarah R Hart, Clare Hoskins, Euan A Stronach, Alan Richardson

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 17% 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

45 citing papers in PubMed, 1 synthesis or guideline pooled it, 68 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. The emerging role of cholesterol metabolism in gynecologic cancer development and therapy.Apoptosis : an international journal on programmed cell death · 2026
    Review
  5. Article
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  9. The Mevalonate Pathway in the Radiation Response of Cancer.International journal of radiation oncology, biology, physics · 2025
    Review
  10. Article
  11. Review
  12. Review
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  14. Article
  15. Article
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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.

Elizabeth de WolfInstitute for Science and Technology in Medicine, School of Pharmacy, Keele University, Newcastle-under-Lyme, UK.
Marwan Ibrahim AbdullahInstitute for Science and Technology in Medicine, School of Pharmacy, Keele University, Newcastle-under-Lyme, UK.
Stefanie M JonesInstitute for Science and Technology in Medicine, School of Pharmacy, Keele University, Newcastle-under-Lyme, UK.
Karen MenezesFaculty of Medicine, Department of Surgery & Cancer, Imperial College, London, UK.
Darren M MossInstitute for Science and Technology in Medicine, School of Pharmacy, Keele University, Newcastle-under-Lyme, UK.
Falko P DrijfhoutChemistry Department, Keele University, Newcastle-under-Lyme, UK.ORCID 0000-0002-3210-8038
Sarah R HartInstitute for Science and Technology in Medicine, School of Medicine, Keele University, Newcastle-under-Lyme, UK.
Clare HoskinsInstitute for Science and Technology in Medicine, School of Pharmacy, Keele University, Newcastle-under-Lyme, UK.
Euan A StronachFaculty of Medicine, Department of Surgery & Cancer, Imperial College, London, UK.
Alan RichardsonInstitute for Science and Technology in Medicine, School of Pharmacy, Keele University, Newcastle-under-Lyme, UK. a.richardson1@keele.ac.uk.ORCID 0000-0003-1825-3375
Keele University · GBImperial College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pre-clinical and retrospective studies of patients using statins to reduce plasma cholesterol have suggested that statins may be useful to treat cancer. However, prospective clinical trials have yet to demonstrate significant efficacy. We have previously shown that this is in part because a hydrophobic statin with a long half-life is necessary. Pitavastatin, the only statin with this profile, has not undergone clinical evaluation in oncology. The target of pitavastatin, hydroxymethylglutarate coenzyme-A reductase (HMGCR), was found to be over-expressed in all ovarian cancer cell lines examined and upregulated by mutated TP53, a gene commonly altered in ovarian cancer. Pitavastatin-induced apoptosis was blocked by geranylgeraniol and mevalonate, products of the HMGCR pathway, confirming that pitavastatin causes cell death through inhibition of HMGCR. Solvent extracts of human and mouse food were also able to block pitavastatin-induced apoptosis, suggesting diet might influence the outcome of clinical trials. When nude mice were maintained on a diet lacking geranylgeraniol, oral pitavastatin caused regression of Ovcar-4 tumour xenografts. However, when the animal diet was supplemented with geranylgeraniol, pitavastatin failed to prevent tumour growth. This suggests that a diet containing geranylgeraniol can limit the anti-tumour activity of pitavastatin and diet should be controlled in clinical trials of statins.

Indexed as

DietXenograft Model Antitumor AssaysAnimalsCell LineCell Line, TumorCells, CulturedDiterpenesDrug Resistance, NeoplasmFemaleGene Expression Regulation, NeoplasticHumansHydroxymethylglutaryl-CoA Reductase InhibitorsHydroxymethylglutaryl CoA ReductasesMice, NudeMice, SCIDOvarian NeoplasmsDiterpenesgeranylgeraniolHMGCR protein, humanHydroxymethylglutaryl-CoA Reductase InhibitorsHydroxymethylglutaryl CoA ReductasespitavastatinQuinolinesTP53 protein, humanTumor Suppressor Protein p53

Identifiers

PMID28710496
PMCPMC5511264
OpenAlexW2734394833

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.