Related Experiment Videos
Special aspects of cancer prevention trials
1Hollings Cancer Center, Charleston, SC 29425.
Abstract:
The results of early cancer prevention trials now are being reported, and new trials have begun or are being designed. Initial trials used agents such as vitamins and minerals, generally regarded as safe. The trials in progress are using similar agents or macronutrient manipulation, but some have incorporated drugs with low but definite toxic potential, such as tamoxifen. Appropriate prevention trial design requires careful consideration of agent toxicity and the use of such agents in healthy individuals. Full disclosure of risks and benefits to potential subjects is necessary. Other considerations are study duration (usually very long) and subject number (usually very large), both of which increase the cost of a trial. Successful prevention trials must overcome these barriers through innovative design. Possible innovations include the use of intermediate marker end-points, the enrollment of subjects at high risk for a specific cancer, and the use of volunteers to help conduct trials.
Insights
Cancer prevention trials are evolving, incorporating agents with potential toxicity. Innovative trial designs are crucial for overcoming challenges like long duration and large subject numbers in cancer research.
Area of Science:
- Oncology
- Clinical Trials
- Preventive Medicine
Background:
- Early cancer prevention trials are yielding results, with new studies commencing.
- Initial trials focused on generally safe agents like vitamins and minerals.
- Current trials utilize similar agents, macronutrient manipulation, or drugs with known toxicities, such as tamoxifen.
Purpose of the Study:
- To highlight the evolving landscape of cancer prevention trials.
- To emphasize the need for careful consideration of agent toxicity and subject safety in trial design.
- To discuss innovative strategies for overcoming common barriers in cancer prevention research.
Main Methods:
- Review of early and ongoing cancer prevention trial designs.
- Analysis of agent selection, including vitamins, minerals, and pharmaceuticals like tamoxifen.
- Exploration of design considerations such as toxicity, duration, and subject numbers.
Main Results:
- Cancer prevention trials are progressing, with a shift towards agents possessing some level of toxicity.
- The design of appropriate trials necessitates a thorough assessment of potential risks and benefits for healthy participants.
- Significant challenges, including extended study durations and large participant cohorts, increase trial costs.
Conclusions:
- Innovative approaches are essential for the success of cancer prevention trials.
- Potential innovations include employing intermediate marker end-points and recruiting high-risk individuals.
- Utilizing volunteers can also aid in the efficient execution of these lengthy and complex trials.