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Updated: Aug 6, 2026

Cell Population Analyses During Skin Carcinogenesis
Published on: August 21, 2013
From carcinogenesis to clinical interventions for cancer prevention
1Division of Cancer Prevention, National Cancer Institute, National Institutes of Health, 6130 Executive Blvd., Suite 2040, Bethesda, MD 20892-7309, USA. pg37g@nih.gov
Abstract:
During the last three decades, the scientific community has made immense progress in acquiring the knowledge needed to prevent cancer. Pioneering research helped to identify potential causes of cancer, particularly environmental factors such as diet, and provided insight regarding their mechanisms-of-action. Concurrently, promising inhibitors of cancer that appeared able to either arrest or reverse cancer development by interfering with one or more steps in the process of carcinogenesis were identified and systematically evaluated for their potential as chemopreventive agents. Numerous agents determined to be safe and effective in preclinical trials have been and continue to be tested in Phase I,II, and III clinical interventions for cancers at various sites, including breast, colon, prostate, esophagus, mouth, lung, cervix, endometrium, ovary, liver, bladder, and skin. The development of valid intermediate biomarkers that can serve as surrogate endpoints for clinical disease is urgently needed to accelerate advances in clinical trials for cancer prevention.
Insights
Scientific advancements over 30 years have identified cancer causes and chemopreventive agents. Further research is needed to develop biomarkers for accelerating clinical trials in cancer prevention.
Area of Science:
- Oncology
- Preventive Medicine
- Molecular Biology
Background:
- Significant progress in understanding cancer causes, including environmental factors like diet, over the past three decades.
- Identification and evaluation of potential cancer inhibitors (chemopreventive agents) that interfere with carcinogenesis.
- Extensive preclinical and clinical trials (Phase I-III) are underway for various cancer types.
Purpose of the Study:
- To summarize the progress in cancer prevention research.
- To highlight the importance of chemopreventive agents.
- To emphasize the need for intermediate biomarkers in clinical trials.
Main Methods:
- Review of scientific literature on cancer causes and prevention.
- Analysis of preclinical and clinical trial data for chemopreventive agents.
- Discussion of the role of environmental factors and molecular mechanisms.
Main Results:
- Identification of key environmental factors contributing to cancer.
- Discovery of numerous safe and effective chemopreventive agents in preclinical studies.
- Ongoing clinical trials for a wide range of cancers.
Conclusions:
- The scientific community has made substantial progress in cancer prevention knowledge.
- Chemopreventive agents show promise but require further clinical validation.
- Development of valid intermediate biomarkers is crucial for accelerating cancer prevention clinical trials.
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