Evidence map›Paper›PMID 27496094›Full record

ArticleCancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology2016

Metformin, Diabetes, and Survival among U.S. Veterans with Colorectal Cancer.

Jessica K Paulus, Christina D Williams, Furha I Cossor, Michael J Kelley, Robert E Martell

Open access · bronzeAbstract read
In one paragraph

Article in Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 4 pooled it
3.1field-weighted citation impact, top 8% 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

20 citing papers in PubMed, 4 syntheses or guidelines pooled it, 36 citations in OpenAlex.

  1. Pooled it
  2. Diabetes mellitus and colorectal carcinoma outcomes: a meta-analysis.International journal of colorectal disease · 2020
    Pooled it
  3. Metformin and colorectal cancer: a systematic review, meta-analysis and meta-regression.International journal of colorectal disease · 2020 · on this map
    Pooled it
  4. Pooled it
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Metformin in colorectal cancer: molecular mechanism, preclinical and clinical aspects.Journal of experimental & clinical cancer research : CR · 2019
    Review
  14. Impact of diabetes comorbidity on the efficacy and safety of FOLFOX first-line chemotherapy among patients with metastatic colorectal cancer: a pooled analysis of two phase-III studies.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2019
    Article
  15. Article
  16. Article
  17. A Cohort Study of Metformin and Colorectal Cancer Risk among Patients with Diabetes Mellitus.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2018
    Article
  18. Article
  19. Article
  20. Metformin, Diabetes, and Survival among U.S. Veterans with Colorectal Cancer-Response.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2017
    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

5 authors at 3 institutions in 1 country.

Jessica K PaulusPredictive Analytics and Comparative Effectiveness (PACE) Center, Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, Massachusetts. jpaulus@tuftsmedicalcenter.org.
Christina D WilliamsDivision of Hematology-Oncology, Durham VA Medical Center, Durham, North Carolina. Division of Medical Oncology, Department of Medicine, Duke University, Durham, North Carolina.
Furha I CossorDepartment of Hematology and Oncology, Lahey Clinic, Burlington, Massachusetts.
Michael J KelleyDivision of Hematology-Oncology, Durham VA Medical Center, Durham, North Carolina. Division of Medical Oncology, Department of Medicine, Duke University, Durham, North Carolina.
Robert E MartellDivision of Hematology-Oncology, Tufts Medical Center, Boston, Massachusetts.
Duke Medical Center · USTufts Medical Center · USLahey Hospital and Medical Center · US

Funding

Tufts Clinical and Translational Research InstituteUL1TR001064 · NCATS · TUFTS UNIVERSITY BOSTON · PI SELKER, HARRY P. · 2013 to 2017
$26.4M
Tufts Clinical and Translation Science Institute (UL1)UL1TR000073 · NCATS · TUFTS UNIVERSITY BOSTON · PI SELKER, HARRY P. · 2012 to 2013
$5.5M
NCATS NIH HHS UL1 TR000073NCATS NIH HHS UL1 TR001064
6 · The paper itself

Abstract

backgroundMetformin has been associated with improved colorectal cancer survival, but investigations are limited by small numbers of patients and confounding by diabetic severity. We examined the association between metformin use and overall survival (OS) in patients with diabetes and colorectal cancer in a large population of U.S. veterans, while adjusting for measures of diabetic severity.

methodsPatients diagnosed with colorectal cancer from January 2001 to December 2008 were identified from the Veterans Affairs Central Cancer Registry. Multivariable models were used to examine the adjusted association of OS with diabetes and use of antidiabetic medications.

resultsThere were 21,352 patients diagnosed with colorectal cancer identified (n = 16,355 nondiabetic patients, n = 2,038 diabetic patients on metformin, n = 2,136 diabetic patients on medications other than metformin, n = 823 diabetic patients not on antidiabetic medication). Diabetic patients had a significantly worse OS than nondiabetic patients, but metformin users had only a 10% increase in death (HR

conclusionsAmong diabetics with colorectal cancer, metformin use is associated with improved survival, despite adjustments for diabetes severity and other risk factors. IMPACT: These data lend further support to the conduct of randomized studies of possible anticancer effects of metformin among patients with colorectal cancer. Cancer Epidemiol Biomarkers Prev; 25(10); 1418-25. ©2016 AACR.

Indexed as

AdultAgedColorectal NeoplasmsDiabetes Mellitus, Type 2FemaleHumansHypoglycemic AgentsKaplan-Meier EstimateMaleMetforminMiddle AgedProportional Hazards ModelsRetrospective StudiesUnited StatesVeteransHypoglycemic AgentsMetformin

Identifiers

PMID27496094
PMCPMC5050110
OpenAlexW2477184914

What OpenQuestion 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 OpenQuestion graph.