Evidence map›Paper›PMID 37397389›Full record

ArticleFrontiers in oncology2023

Metformin is associated with improved clinical outcomes in patients with melanoma: a retrospective, multi-institutional study.

Ryan C Augustin, Ziyu Huang, Fei Ding, Shuyan Zhai, Jennifer McArdle, Anthony Santisi, Michael Davis, Cindy Sander, Diwakar Davar, John M Kirkwood and 3 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in oncology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 5% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Life Factors and Melanoma: From the Macroscopic State to the Molecular Mechanism.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Review
  4. Review
  5. Mitochondrial bioenergetics and networks in melanoma: an update.Apoptosis : an international journal on programmed cell death · 2025
    Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. [Metformin suppresses hypoxia-inducible factor-1Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2024
    Article
  12. Article
  13. Review
  14. 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

13 authors at 3 institutions in 1 country.

Ryan C AugustinDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, United States.
Ziyu HuangDepartment of Biostatistics, UPMC Hillman Cancer Center, Pittsburgh, PA, United States.
Fei DingDepartment of Biostatistics, UPMC Hillman Cancer Center, Pittsburgh, PA, United States.
Shuyan ZhaiDepartment of Biostatistics, UPMC Hillman Cancer Center, Pittsburgh, PA, United States.
Jennifer McArdleUPMC Hillman Cancer Center, Pittsburgh, PA, United States.
Anthony SantisiDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, United States.
Michael DavisDepartment of Biomedical Informatics, University of Pittsburgh, Pittsburgh, PA, United States.
Cindy SanderUPMC Hillman Cancer Center, Pittsburgh, PA, United States.
Diwakar DavarUPMC Hillman Cancer Center, Pittsburgh, PA, United States.
John M KirkwoodDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, United States.
Greg M DelgoffeDepartment of Immunology, University of Pittsburgh, Pittsburgh, PA, United States.
Allison Betof WarnerMemorial Sloan Kettering Cancer Center, New York, NY, United States.
Yana G NajjarDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, United States.
UPMC Hillman Cancer Center · USUniversity of Pittsburgh · USMemorial Sloan Kettering Cancer Center · US

Funding

X-RAY CRYSTALLOGRAPHYP30CA008748 · NCI · SLOAN-KETTERING INSTITUTE FOR CANCER RES · PI Elisa de Stanchina · 1985 to 2026
$347.4M
Dissecting the role of hypoxia in T cell differentiation in cancerR01CA277473 · NCI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Greg M. Delgoffe, Yana Najjar · 2023 to 2026
$2.4M
NCI NIH HHS P30 CA008748NCI NIH HHS R01 CA277473
6 · The paper itself

Abstract

Background: Pre-clinical studies have shown that metformin reduces intratumoral hypoxia, improves T-cell function, and increases sensitivity to PD-1 blockade, and metformin exposure has been associated with improved clinical outcomes in various types of cancer. However, the impact of this drug in diabetic melanoma patients has not yet been fully elucidated. Methods: We reviewed 4,790 diabetic patients with stage I-IV cutaneous melanoma treated at the UPMC-Hillman Cancer Center and Memorial Sloan Kettering Cancer Center between 1996-2020. The primary endpoints included recurrence rates, progression free survival (PFS), and overall survival (OS) with and without metformin exposure. Tabulated variables included BRAF mutational status, immunotherapy (IMT) by type, and incidence of brain metastases. Results: The five-year incidence of recurrence in stage I/II patients was significantly reduced with metformin exposure (32.3% vs 47.7%, p=0.012). The five-year recurrence rate for stage III patients was also significantly reduced (58.3% vs 77.3%, p=0.013) in the metformin cohort. OS was numerically increased in nearly all stages exposed to metformin, though this did not reach statistical significance. The incidence of brain metastases was significantly lower in the metformin cohort (8.9% vs 14.6%, p=0.039). Conclusion: This is the first study to demonstrate significantly improved clinical outcomes in diabetic melanoma patients exposed to metformin. Overall, these results provide further rationale for ongoing clinical trials studying the potential augmentation of checkpoint blockade with metformin in advanced melanoma.

Indexed as

checkpoint blockademelanomametforminoxidative phosphorylationprogression-free survivaltumor infiltrating lymphocytetumor microenvironment (TME)

Identifiers

PMID37397389
PMCPMC10312386
OpenAlexW4380986374

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.