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Updated: May 20, 2026

Drug Repurposing Hypothesis Generation Using the "RE:fine Drugs" System
Published on: December 11, 2016
Natural-agent mechanisms and early-phase clinical development
Janet L Wang1, Kathryn A Gold, Scott M Lippman
1Baylor College of Medicine, Houston, TX, USA.
Abstract:
The evolution of chemoprevention research continues in exciting new directions. Large chemoprevention trials in unselected patients have often been negative, but this trend promises to be reversed by more-focused and novel trial designs emphasizing the identification of molecular targets and predictive biomarkers. Phase 0 designs, blood and tissue-based biomarkers, and surrogate endpoints are examples of important features of new prevention-trial design. Breakthroughs in the identification of novel mechanisms of carcinogenesis have contributed to a better understanding of key signaling pathways in cancer development. There has been substantial progress in elucidating molecular targets of promising synthetic and natural agents such as epigallocatechin gallate, indole-3-carbinol, myo-inositol, and deguelin, raising great optimism that biomarkers predicting efficacy, such as those associated with metformin effects, will be identified. This review will highlight several promising natural agents and how early clinical development may elucidate their role in personalized cancer chemoprevention.
Insights
Chemoprevention research is advancing with targeted trial designs and biomarkers to identify effective cancer prevention agents. This approach promises to reverse negative trends and enable personalized cancer prevention strategies.
Area of Science:
- Oncology
- Preventive Medicine
- Molecular Biology
Background:
- Chemoprevention research has faced challenges with large trials in unselected populations yielding negative results.
- Recent advances in understanding carcinogenesis and molecular signaling pathways offer new opportunities.
- The focus is shifting towards personalized approaches in cancer prevention.
Purpose of the Study:
- To review novel strategies in cancer chemoprevention research.
- To highlight promising natural and synthetic agents and their molecular targets.
- To discuss the role of biomarkers in predicting treatment efficacy for personalized cancer chemoprevention.
Main Methods:
- Review of current literature on chemoprevention trial designs.
- Analysis of molecular targets and signaling pathways in cancer development.
- Examination of natural and synthetic agents, including epigallocatechin gallate, indole-3-carbinol, myo-inositol, and deguelin.
- Discussion of biomarker identification for predicting agent efficacy.
Main Results:
- Novel trial designs, including Phase 0 studies, are improving the focus of chemoprevention research.
- Identification of molecular targets and predictive biomarkers is crucial for success.
- Several natural agents show promise, with ongoing research into their efficacy and biomarkers.
Conclusions:
- Personalized cancer chemoprevention is becoming a reality through targeted approaches.
- Biomarkers are essential for identifying individuals likely to benefit from specific chemopreventive agents.
- Early clinical development of natural agents holds significant promise for future cancer prevention strategies.
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