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Updated: Oct 6, 2025

Pharmacologic Induction of Epidermal Melanin and Protection Against Sunburn in a Humanized Mouse Model
Published on: September 7, 2013
The Challenge of Melanoma Chemoprevention
Craig A Elmets1,2,3,4, Andrzej Slominski2,3,4, Mohammad Athar5,3
1Department of Dermatology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama. celmets@uabmc.edu.
Abstract:
Melanoma is a treatment-resistant cancer of melanocytes. There is a serious unmet need for chemopreventive agents that can inhibit their evolution from preexisting dysplastic nevi. Low-dose aspirin and NSAIDs are potential chemopreventive candidates because they inhibit the enzyme COX-2 which has a number of procarcinogenic effects. Unfortunately, the clinical trial reported by Okwundu and colleagues in this issue of Cancer Prevention Research did not show an effect of aspirin on biomarkers associated with progression of premalignant dysplastic nevi to melanomas. Further clinical trials with other aspirin or NSAID biomarkers or clinical trials with other potential chemopreventive agents offer hope to those who are at increased risk for melanomas.See related article, p. 129.
Insights
Low-dose aspirin did not prevent melanoma progression from dysplastic nevi in a clinical trial. Further research is needed for effective melanoma chemoprevention agents.
Area of Science:
- Oncology
- Cancer Prevention
- Dermatology
Background:
- Melanoma is a difficult-to-treat cancer originating from melanocytes.
- There's a critical need for agents to prevent melanoma development from dysplastic nevi.
- Cyclooxygenase-2 (COX-2) inhibitors like aspirin and NSAIDs are explored for chemoprevention due to their anti-cancer properties.
Purpose of the Study:
- To evaluate the efficacy of low-dose aspirin in preventing the progression of premalignant dysplastic nevi to melanoma.
- To assess the impact of aspirin on biomarkers associated with melanoma development.
Main Methods:
- A clinical trial was conducted to investigate the effect of low-dose aspirin.
- Biomarkers related to the progression of dysplastic nevi to melanoma were monitored.
Main Results:
- The clinical trial did not demonstrate a significant effect of aspirin on the studied biomarkers.
- Aspirin did not inhibit the progression of premalignant dysplastic nevi to melanoma in this trial.
Conclusions:
- Low-dose aspirin is not effective in preventing melanoma progression from dysplastic nevi based on the evaluated biomarkers.
- Further clinical trials exploring different biomarkers, NSAIDs, or other chemopreventive agents are warranted for melanoma risk reduction.
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