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Chemical-Induced Skin Carcinogenesis Model Using Dimethylbenz[a]Anthracene and 12-O-Tetradecanoyl Phorbol-13-Acetate DMBA-TPA
Published on: December 19, 2019
Phosphodiesterase Type 5 Inhibitors and Risk of Skin Cancers in Men: A Meta-Analysis and Trial Sequential Analysis
Yi Patrick Lu1, Shujun Fan2, Zhen Liang1
1Department of Urology, Tianjin Medical University General Hospital, Tianjin, China.
Purpose:
We conducted a systematic review and meta-analysis to quantify the association between phosphodiesterase type 5 inhibitors (PDE5Is) use and skin cancers and we also examined whether down-expression of the PDE5A gene was related to worse prognosis for malignant melanoma (MM) patients.
Materials And Methods:
The PubMed, Cochrane Library, Web of Science, EMBASE, and ClinicalTrails.gov databases were searched. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to evaluate the association between PDE5Is use and risk of skin cancers. Cumulative meta-analysis and trial sequential analysis (TSA) were also conducted. Survival outcomes were analyzed online.
Results:
After pooling all 8 eligible studies comprising 7,479,852 subjects, we found that PDE5Is use was significantly associated with slightly increased risk of developing MM (OR: 1.13, 95% CI: 1.05 to 1.21, I²=67.1%), basal cell carcinoma (OR: 1.16, 95% CI: 1.13 to 1.19, I²=49.6%), and squamous cell carcinoma (OR: 1.07, 95% CI: 1.01 to 1.13, I²=0.0%). Totally, PDE5Is increased the risk of developing skin cancers (OR: 1.13, 95% CI: 1.09 to 1.17, I²=70.8%). TSA results showed that the sample size was enough to reach a positive conclusion.
Conclusions:
The use of PDE5Is may be slightly associated with increased risk of developing skin cancers. There should be a balance between drug benefits and potential safety issues. However, the pooled results should be considered tentative until confounding factors such as sun exposure and lifestyle are well-controlled in further studies.
Insights
Phosphodiesterase type 5 inhibitors (PDE5Is) use shows a slight association with an increased risk of skin cancers, including malignant melanoma. Further research is needed to control for confounding factors like sun exposure.
Area of Science:
- Oncology
- Dermatology
- Pharmacology
Background:
- Phosphodiesterase type 5 inhibitors (PDE5Is) are widely used for erectile dysfunction.
- The potential link between PDE5Is and skin cancer risk requires thorough investigation.
- Gene expression, specifically PDE5A, may influence malignant melanoma prognosis.
Purpose of the Study:
- To systematically review and meta-analyze the association between PDE5Is use and skin cancer risk.
- To investigate the correlation between PDE5A gene down-expression and malignant melanoma patient outcomes.
Main Methods:
- Searched major databases (PubMed, EMBASE, etc.) for relevant studies.
- Calculated odds ratios (ORs) and 95% confidence intervals (CIs) for skin cancer risk.
- Conducted cumulative meta-analysis and trial sequential analysis (TSA).
Main Results:
- PDE5Is use was linked to a slightly increased risk of malignant melanoma (OR: 1.13), basal cell carcinoma (OR: 1.16), and squamous cell carcinoma (OR: 1.07).
- Overall, PDE5Is use showed a significant association with a slightly higher risk of skin cancers (OR: 1.13).
- TSA confirmed sufficient sample size for a conclusive finding.
Conclusions:
- PDE5Is use may be associated with a modest increase in skin cancer risk.
- Balancing therapeutic benefits against potential safety concerns is crucial.
- Further studies controlling for sun exposure and lifestyle are necessary to confirm these findings.
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