How Are
Cancer Prevention Clinical Trials
Different
From Other Cancer Studies?
There are different types
of cancer clinical trials or studies. They include:
- chemoprevention trials
designed to help people who have not previously had cancer;
- chemoprevention trials
designed to prevent a new type of cancer from developing in
people who have had cancer;
- early detection trials
to find cancer, especially in its early stages;
- treatment trials to test
new treatments in people who have cancer; and
- quality of life studies
to improve comfort and quality of life for people who have
cancer.
Some studies, such as treatment
clinical trials and quality-of-life studies, are for people
who already have cancer. Certain chemoprevention trials are
for people who are cancer survivors who want to lower their
risk for getting another cancer. This booklet describes cancer
prevention trials or studies for people who haven't had cancer.
People in these trials are usually healthy people who want to
lower their risk for the disease.
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National Cancer Institute
April 1999
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