Basic Study
Copyright ©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Diabetes. Dec 15, 2023; 14(12): 1839-1848
Published online Dec 15, 2023. doi: 10.4239/wjd.v14.i12.1839
Diabetes mellitus and prostate cancer risk: A mendelian randomization analysis
Jian-Xu Yuan, Qing Jiang, Sheng-Jie Yu
Jian-Xu Yuan, Qing Jiang, Sheng-Jie Yu, Department of Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
Author contributions: Jiang Q designed the research plan; Yuan JX wrote the first draft; Yuan JX and Yu SJ participated in data collection and analysis; Yu SJ made revisions to the manuscript; all authors contributed to the article and approved the submitted version.
Conflict-of-interest statement: All authors declare that this study was conducted in the absence of any commercial or financial relationships that could be construed as potential conflicts of interest.
Data sharing statement: Publicly available datasets were analyzed in this study. The data are as follows: IEU OpenGWAS project:https://gwas.mrcieu.ac.uk/datasets/ukb-a-57/; https://gwas.mrcieu.ac.uk/datasets/ukb-a-306/.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Sheng-Jie Yu, MD, PhD, Associate Chief Physician, Associate Professor, Surgeon, Teacher, Department of Surgery, The Second Affiliated Hospital of Chongqing Medical University, No. 74-76 Linjiang Road, Chongqing 400010, China. bbyddh@sina.com
Received: September 2, 2023
Peer-review started: September 2, 2023
First decision: November 14, 2023
Revised: November 20, 2023
Accepted: December 1, 2023
Article in press: December 1, 2023
Published online: December 15, 2023
Abstract
BACKGROUND

Some studies have directed towards an association between diabetes mellitus (DM) and prostate cancer (PCa); however, this specific relationship remains inconclusive. In recent years, Mendelian randomization (MR) has become a widely used analytical method for inferring epidemiological causes.

AIM

To investigated the potential relationship between DM and PCa using MR.

METHODS

We downloaded relevant data on "diabetes" and "PCa" from the IEU OpenGWAS project database, performed three different methods to conduct MR, and carried out sensitivity analysis for verification.

RESULTS

The results indicated that DM was an independent risk factor for PCa. The odds ratio (OR) values obtained using the inverse variance weighted method in this study were as follows: OR = 1.018 (95% confidence interval: 1.004-1.032), P = 0.014.

CONCLUSION

We found that DM could increase the incidence rate of PCa.

Keywords: Prostate cancer, Diabetes mellitus, Mendelian randomization analysis, Risk factors, Genome-wide association study

Core Tip: Diabetes mellitus (DM) is a chronic metabolic disease caused by many factors. Prostate cancer (PCa) is a common malignant tumor in men and is the second leading cause of cancer death. The Mendelian randomization (MR) method uses genetic variation as an instrumental variable to detect and quantify causal relationships, which can avoid the impact of confounding factors on the accuracy of the research results. This makes it more reliable than observational study or even randomized controlled trial. This study aimed to clarify the relationship between DM and PCa using MR analysis. Through MR analysis of a large sample with three different methods, this study found that DM was an independent risk factor for PCa, providing new directions for the prevention and treatment of PCa.