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Updated: Jun 14, 2026

Development and Maintenance of a Preclinical Patient Derived Tumor Xenograft Model for the Investigation of Novel Anti-Cancer Therapies
Published on: September 30, 2016
Pharmacotherapy for inherited colorectal cancer
1The University of Texas MD Anderson Cancer Center, Department of Gastroenterology, Hepatology & Nutrition, 1515 Holcombe Blvd., Unit 1466, Houston, Texas, USA. plynch@mdanderson.org
Importance Of The Field:
An important recent consideration in the medical management of colorectal cancer risk has been the notion of primary prevention or 'chemoprevention' of adenomas. A number of promising agents, and even combinations of agents, have shown promise in clinical trials. This review is written in the interest of capturing the current state of chemoprevention in familial adenomatous polyposis (FAP). This will take a decidedly clinical perspective.
Areas Covered In This Review:
This review addresses mainly randomized clinical chemoprevention trials. A search using PubMed from 1980 to present was conducted.
What The Reader Will Gain:
The reader should gain an appreciation of the role that chemoprevention clinical trials in FAP has had in establishing a basis for clinically oriented use of selected drugs, mainly sulindac and celecoxib, as adjuncts to surgical and endoscopic treatment. In addition, the reader will see how FAP trials can provide a foundation for similar trials in nonfamilial adenomas.
Take-Home Message:
As a proving ground for new, potential chemopreventive agents, trials in FAP involved short-term (3- to 12-month) administration of drug. Endpoints generally involved measures of adenoma regression in the rectal segment retained post-colectomy.
Insights
Chemoprevention clinical trials in familial adenomatous polyposis (FAP) have established a basis for using drugs like sulindac and celecoxib. These trials also provide a foundation for studying chemoprevention in non-familial adenomas.
Area of Science:
- Gastroenterology and Oncology
- Clinical Pharmacology
Background:
- Primary prevention, or chemoprevention, of adenomas is a key consideration in managing colorectal cancer risk.
- Familial adenomatous polyposis (FAP) serves as a crucial model for studying chemoprevention strategies.
- Numerous agents and combinations have demonstrated potential in clinical trials.
Purpose of the Study:
- To review the current state of chemoprevention in familial adenomatous polyposis (FAP) from a clinical perspective.
- To highlight the role of FAP chemoprevention trials in guiding clinical drug use.
- To establish how FAP trials can inform future research in non-familial adenomas.
Main Methods:
- Focus on randomized clinical chemoprevention trials.
- Systematic literature search of PubMed from 1980 to present.
Main Results:
- Established the clinical utility of sulindac and celecoxib as adjuncts in FAP management.
- Demonstrated the value of FAP trials in providing a foundation for broader chemoprevention research.
- Highlighted the role of short-term drug administration (3-12 months) in assessing adenoma regression.
Conclusions:
- FAP trials are essential for evaluating new chemopreventive agents.
- Adenoma regression in retained rectal segments is a key endpoint.
- Findings from FAP studies can be extrapolated to non-familial adenoma chemoprevention.
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