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.

Abstract

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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