Evidence map›Paper›PMID 25522257›Full record

ArticleAmerican journal of respiratory and critical care medicine2015

Survival of patients with stage IV lung cancer with diabetes treated with metformin.

Jenny J Lin, Emily J Gallagher, Keith Sigel, Grace Mhango, Matthew D Galsky, Cardinale B Smith, Derek LeRoith, Juan P Wisnivesky

Abstract readEvaluation Study
In one paragraph

Article in American journal of respiratory and critical care medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed, 5 pooled it
7.1field-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

81 citing papers in PubMed, 5 syntheses or guidelines pooled it, 137 citations in OpenAlex.

  1. Pooled it
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  5. Effects of metformin on survival outcomes of lung cancer patients with type 2 diabetes mellitus: a meta-analysis.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2016
    Pooled it
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  16. Low BMI patients with advancedChinese medical journal pulmonary and critical care medicine · 2023
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21 more citing papers are in PubMed but not listed here.

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 2 institutions in 3 countries.

Jenny J Lin1 Division of General Internal Medicine.
Emily J Gallagher
Keith Sigel
Grace Mhango
Matthew D Galsky
Cardinale B Smith
Derek LeRoith
Juan P Wisnivesky
General Department of Preventive Medicine · VNDiabetes Australia · AU

Funding

Impact of Cancer on Adherence in DiabetesK07CA166462 · NCI · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI LIN, JENNY J. · 2013 to 2017
$846k
The Cost-Effectiveness of Lung Cancer Screening in HIV InfectionK07CA180782 · NCI · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · PI SIGEL, KEITH MAGNUS · 2014 to 2018
$646k
NCI NIH HHS 1K07CA166462-01NCI NIH HHS 1K07CA180782-01NCI NIH HHS K07 CA166462NCI NIH HHS K07 CA180782
6 · The paper itself

Abstract

rationalePrior studies have shown an anticancer effect of metformin in patients with breast and colorectal cancer. It is unclear, however, whether metformin has a mortality benefit in lung cancer.

objectivesTo compare overall survival of patients with diabetes with stage IV non-small cell lung cancer (NSCLC) taking metformin versus those not on metformin.

methodsUsing data from the Surveillance, Epidemiology, and End Results registry linked to Medicare claims, we identified 750 patients with diabetes 65-80 years of age diagnosed with stage IV NSCLC between 2007 and 2009. We used propensity score methods to assess the association of metformin use with overall survival while controlling for potential confounders. MEASUREMENTS AND MAIN

resultsOverall, 61% of patients were on metformin at the time of lung cancer diagnosis. Median survival in the metformin group was 5 months, compared with 3 months in patients not treated with metformin (P < 0.001). Propensity score analyses showed that metformin use was associated with a statistically significant improvement in survival (hazard ratio, 0.80; 95% confidence interval, 0.71-0.89), after controlling for sociodemographics, diabetes severity, other diabetes medications, cancer characteristics, and treatment.

conclusionsMetformin is associated with improved survival among patients with diabetes with stage IV NSCLC, suggesting a potential anticancer effect. Further research should evaluate plausible biologic mechanisms and test the effect of metformin in prospective clinical trials.

Indexed as

AgedAged, 80 and overCarcinoma, Non-Small-Cell LungCombined Modality TherapyDiabetes MellitusFemaleHumansHypoglycemic AgentsLung NeoplasmsMaleMetforminNeoplasm StagingPropensity ScoreSEER ProgramSurvival AnalysisUnited StatesHypoglycemic AgentsMetformindiabeteslung neoplasmsmetforminsurvival analysis

Identifiers

PMID25522257
PMCPMC4351595
OpenAlexW2151151767

What OpenQuestion holds

Texttitle and abstract
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.