Evidence map›Paper›PMID 28723808›Full record

ArticleMedicine2017

Continuous use of metformin can improve survival in type 2 diabetic patients with ovarian cancer: A retrospective study.

Shan-Bing Wang, Kai-Jian Lei, Jia-Pei Liu, Yu-Ming Jia

Open access · goldFull text read
In one paragraph

Article in Medicine, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 4 pooled it
2.2field-weighted citation impact, top 11% 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

28 citing papers in PubMed, 4 syntheses or guidelines pooled it, 47 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Metformin Use and Mortality in Women with Ovarian Cancer: An Updated Meta-Analysis.International journal of clinical practice · 2022 · on this map
    Pooled it
  4. Pooled it
  5. Trial
  6. Trial
  7. Subcellular Stress Markers in Epithelial Ovarian Cancer.International journal of molecular sciences · 2025
    Review
  8. Review
  9. Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Metformin and ovarian cancer: the evidence.Annals of translational medicine · 2020
    Review
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

4 authors at 1 institution in 1 country.

Shan-Bing WangDepartment of Oncology Laboratory Medicine, the Second People's Hospital of Yibin City, Yibin, Sichuan, China.
Kai-Jian Lei
Jia-Pei Liu
Yu-Ming Jia
Second People’s Hospital of Yibin · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Evidence indicates that type 2 diabetes may stimulate the initiation and progression of several types of cancer. Metformin, a drug most commonly used to treat type 2 diabetes, may inhibit cancer cell growth and reduce the risk of cancer. However, evidence of the antitumor effects of metformin on ovarian cancer is still limited.In this study, we retrospectively examined the effects of metformin on ovarian cancer patients with diabetes at our institution.We identified 568 consecutive patients who were newly diagnosed with ovarian cancer and treated between January 2011 and March 2014. Patients with International Federation of Gynecology and Obstetrics (FIGO) stage I to IV epithelial ovarian, fallopian, or peritoneal cancer were included. Patients with type 1 diabetes, incomplete records (including medication records) and any other cancer before their ovarian cancer diagnosis, as well as those diagnosed with diabetes more than 6 months after their ovarian cancer diagnosis, were excluded. Out of 568 patients, 48 (8.5%) patients with type 2 diabetes continuously used metformin, 34 (5.9%) patients with type 2 diabetes did not take metformin, 22 (3.9%) patients with type 2 diabetes discontinued metformin, and 464 (81.7%) ovarian cancer patients were nondiabetic controls. Longer progression-free survival (PFS) and overall survival (OS) were observed in ovarian cancer patients with diabetes who were taking metformin than in diabetic patients not taking metformin, diabetic patients who discontinued metformin, and nondiabetic ovarian cancer patients (P = .001). After adjusting for possible confounders, metformin use was associated with a lower risk for disease relapse [hazard ratio (HR) = 0.34; 95% confidence interval (CI): 0.27-0.67; P < .01] and disease-related death (HR = 0.29; 95% CI: 0.13-0.58, P = .03) among ovarian cancer patients with diabetes.Metformin use may decrease the risk for disease recurrence and death in patients with ovarian cancer, but the drug treatment must be continuous.

Indexed as

Antineoplastic AgentsDiabetes Mellitus, Type 2Disease-Free SurvivalFemaleHumansHypoglycemic AgentsMetforminMiddle AgedMultivariate AnalysisOvarian NeoplasmsProportional Hazards ModelsRetrospective StudiesTreatment OutcomeAntineoplastic AgentsHypoglycemic AgentsMetformin

Identifiers

PMID28723808
PMCPMC5521948
OpenAlexW2738988152

What OpenQuestion holds

Textfull text, public
LicenceCC BY-SA
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.