Evidence map›Paper›PMID 30115470›Full record

ArticleOral oncology2018

Survival impact and toxicity of metformin in head and neck cancer: An analysis of the SEER-Medicare dataset.

William A Stokes, Megan Eguchi, Arya Amini, Mohammad K Hararah, Ding Ding, Jessica D McDermott, Cathy J Bradley, Sana D Karam

Open access · greenAbstract readComparative Study
In one paragraph

Article in Oral oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 3 pooled it
1.1field-weighted citation impact, top 22% 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

10 citing papers in PubMed, 3 syntheses or guidelines pooled it, 20 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Effect of metformin on hypoxia-associated gene expression in oral cavity squamous cell carcinoma in non-diabetic patients - a prospective window of opportunity study.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025
    Article
  5. Review
  6. Article
  7. Article
  8. Association of Diabetes with Oral Cancer- an Enigmatic Correlation.Asian Pacific journal of cancer prevention : APJCP · 2020
    Article
  9. Review
  10. 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

8 authors at 3 institutions in 1 country.

William A StokesDepartment of Radiation Oncology, University of Colorado Denver, USA.
Megan EguchiDepartment of Health Systems, Management, and Policy, Colorado School of Public Health, USA.
Arya AminiDepartment of Radiation Oncology, City of Hope Cancer Center, USA.
Mohammad K HararahDepartment of Otolaryngology, University of Colorado Denver, USA.
Ding DingDepartment of Radiation Oncology, University of Colorado Denver, USA.
Jessica D McDermottDivision of Medical Oncology, University of Colorado Denver, USA.
Cathy J BradleyDepartment of Health Systems, Management, and Policy, Colorado School of Public Health, USA.
Sana D KaramDepartment of Radiation Oncology, University of Colorado Denver, USA. Electronic address: sana.karam@ucdenver.edu.
University of Colorado Denver · USColorado School of Public Health · USCity Of Hope National Medical Center · US

Funding

University of Colorado Cancer Center Support Grant - Lung Cancer Patient-Derived Xenografts with Autologous Human Immune SystemsP30CA046934 · NCI · UNIVERSITY OF COLORADO DENVER · PI James V Degregori · 1988 to 2026
$117.0M
Paul Calabresis Award in Clinical Oncology ResearchK12CA086913 · NCI · UNIVERSITY OF COLORADO DENVER · PI VIRGINIA F. BORGES, Jill E Slansky · 2000 to 2026
$17.8M
NCI NIH HHS K12 CA086913NCI NIH HHS P30 CA046934
6 · The paper itself

Abstract

objectivesRecent preclinical research has renewed interest in the interplay between glucose dysregulation and cancer. Metformin holds promise as an adjunctive antineoplastic agent in head and neck cancer (HNC). We aimed to explore the impact of metformin in HNC patients from a population-based dataset. PATIENTS &

methodsPatients diagnosed with HNC from 2008 to 2011 were identified from the Surveillance, Epidemiology, and End Results (SEER)-Medicare linked dataset and categorized into three groups: non-diabetics (nD), diabetics not taking metformin (DnM), and diabetics taking metformin (D + M). Overall survival (OS) and cancer-specific survival (CSS) were compared between groups using Kaplan-Meier and Cox regression controlling for sociodemographic, clinical, and treatment covariates. The incidence of toxicities associated with HNC therapy was compared among groups using χ

resultsAmong 1646 patients, there were 1144 nD, 378 DnM, and 124 D + M. 2-year OS rates was 65.6% for nD, 57.7% for DnM, and 73.4% for D + M by Kaplan-Meier (p < 0.01), and corresponding rates of 2-year CSS were 73.7%, 66.1%, and 88.8% (p < 0.01), respectively. On Cox multivariable analysis, OS among the three groups did not significantly differ; however, CSS was significantly worse among both nD versus DnM as compared to D + M. Toxicity rates were not significantly increased among D + M.

conclusionHNC patients with diabetes taking metformin experience improved CSS. Prospective investigation of the addition of metformin to standard-of-care HNC therapy is warranted.

Indexed as

AgedAged, 80 and overAnticholesteremic AgentsAntihypertensive AgentsCohort StudiesCombined Modality TherapyDiabetes MellitusDyslipidemiasFemaleHead and Neck NeoplasmsHumansHydroxymethylglutaryl-CoA Reductase InhibitorsHypertensionHypoglycemic AgentsKaplan-Meier EstimateMaleAnticholesteremic AgentsAntihypertensive AgentsHydroxymethylglutaryl-CoA Reductase InhibitorsHypoglycemic AgentsMetforminDiabetesHead and neck cancerMetforminWarburg effect

Identifiers

PMID30115470
PMCPMC6659721
OpenAlexW2810404262

What Socratic holds

Texttitle and abstract
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 Socratic graph.