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Association between SGLT2 inhibitors and genital cancer: a meta-analysis and mendelian randomization study
Bo Xu1,2,3,4,5,6, Yilin Liu1,2,3,4,6, Zunbo He7,8,9,10
1The First Affiliated Hospital, Hunan Provincial Clinical Medical Research Center for Drug Evaluation of Major Chronic Diseases, Hengyang Medical School, University of South China, Hengyang, 421001, Hunan, China.
Background:
Effects of sodium-glucose cotransporter 2 (SGLT2) inhibitors on genital cancer risk remains unclear.
Objective:
The objective of this study was to investigate the impact of SGLT2 inhibitors/SGLT2 inhibition on genital cancer risk.
Methods:
We systematically searched PubMed, Web of Science, EU Clinical Trials Register, and ClinicalTrials.gov for large randomized controlled trials up to June 4, 2025. The Mantel-Haenszel method was applied, with risk ratios (RRs) and 95% confidence intervals (CIs) used for dichotomous outcomes. In the Mendelian randomization study, genetic variants in SLC5A2 served as instrumental variables to investigate the causal relationship between SGLT2 inhibition and genital cancers.
Results:
A total of 15 studies (16 trials) involving 101,430 patients were included. SGLT2 inhibitors did not significantly reduce genital cancer risk compared to placebo (RR 1.10; 95% CI 0.93-1.31; P = 0.28; moderate certainty of evidence), with consistent findings across subgroup analyses. No significant effects of SGLT2 inhibitors were observed for cervical, endometrial, ovarian, prostate, uterine, penile, or vulvar cancers. Dapagliflozin potentially increased the risk of male genital cancers (RR 1.31; 95% CI 0.99-1.74; P = 0.06). SGLT2 inhibition significantly reduced testicular [odds ratio (OR) 0.012; 95% CI 0.001-0.220; P = 0.003] and cervical (OR 0.013; 95% CI 0.001-0.122; P = 1.615 × 10 - 4) cancer risks. Pooled results from both discovery and replication cohorts demonstrated that SGLT2 inhibition reduced cervical cancer risk (OR 0.016; 95% CI 0.002-0.116; P < 0.0001).
Conclusion:
SGLT2 inhibitors exhibited a neutral overall risk profile for genital cancers, while genetic evidence demonstrated beneficial effects specifically for cervical cancer.
Insights
Sodium-glucose cotransporter 2 (SGLT2) inhibitors show a neutral risk for most genital cancers. However, SGLT2 inhibition may reduce cervical cancer risk, according to genetic evidence.
Area of Science:
- Oncology
- Pharmacology
- Genetics
Background:
- The association between sodium-glucose cotransporter 2 (SGLT2) inhibitors and genital cancer risk is not well-established.
- This study addresses the uncertainty surrounding SGLT2 inhibitors' effects on various genital cancers.
Purpose of the Study:
- To investigate the impact of SGLT2 inhibitors and SGLT2 inhibition on the risk of developing genital cancers.
- To analyze the safety profile of SGLT2 inhibitors concerning oncological outcomes in the genital region.
Main Methods:
- Systematic literature search of major databases (PubMed, Web of Science, clinical trial registries) for large randomized controlled trials.
- Meta-analysis using Mantel-Haenszel methods to calculate risk ratios (RRs) and odds ratios (ORs) with 95% confidence intervals (CIs).
- Mendelian randomization study utilizing genetic variants in SLC5A2 to assess causal relationships between SGLT2 inhibition and genital cancers.
Main Results:
- SGLT2 inhibitors demonstrated a neutral overall risk for genital cancers (RR 1.10; 95% CI 0.93-1.31) across 15 studies (16 trials) with 101,430 patients.
- No significant effects were observed for cervical, endometrial, ovarian, prostate, uterine, penile, or vulvar cancers; however, dapagliflozin showed a potential increase in male genital cancer risk (RR 1.31; 95% CI 0.99-1.74).
- SGLT2 inhibition significantly reduced testicular cancer risk (OR 0.012; 95% CI 0.001-0.220) and demonstrated a strong protective effect against cervical cancer (OR 0.013; 95% CI 0.001-0.122).
Conclusions:
- Sodium-glucose cotransporter 2 (SGLT2) inhibitors have a neutral overall risk profile for genital cancers.
- Genetic evidence strongly supports a beneficial effect of SGLT2 inhibition in reducing cervical cancer risk.
- Further research may be warranted to explore specific drug effects and mechanisms in different genital cancer types.
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