Doctors all over the country are conducting many types of clinical trials (research studies in which people volunteer to take part). Clinical trials are designed to answer important questions and to find out whether new approaches are safe and effective.

Research already has led to advances that have helped people live longer, and research continues. Doctors are trying to find better ways to care for people with esophageal cancer:

• Surgery: Surgeons are studying whether small cuts can be used instead of long incisions. The surgeon makes small cuts in the neck, chest, and abdomen. The surgeon sees inside the chest with a laparoscope, and the cancer-containing esophagus is removed.
  
  
• Chemotherapy and biological therapy: NCI is sponsoring a study of biological therapy (a monoclonal antibody) combined with chemotherapy.
  
  
• Supportive care: Doctors are also testing ways to manage the problems caused by cancer and its treatment.

Even if the people in a trial do not benefit directly, they may still make an important contribution by helping doctors learn more about cancer and how to control it. Although clinical trials may pose some risks, doctors do all they can to protect their patients.

If you're interested in being part of a clinical trial, talk with your doctor. You may want to read the NCI booklet Taking Part in Cancer Treatment Research Studies ¹. It describes how treatment studies are carried out and explains their possible benefits and risks.

NCI's Web site includes a section on clinical trials at http://www.cancer.gov/clinicaltrials. It has general information about clinical trials as well as detailed information about specific ongoing studies of cancer. NCI's Information Specialists at 1-800-4-CANCER or at LiveHelp ² at http://www.cancer.gov/help can answer questions and provide information about clinical trials.

Glossary Terms

Treatment to boost or restore the ability of the immune system to fight cancer, infections, and other diseases. Also used to lessen certain side effects that may be caused by some cancer treatments. Agents used in biological therapy include monoclonal antibodies, growth factors, and vaccines. These agents may also have a direct antitumor effect. Also called biological response modifier therapy, biotherapy, BRM therapy, and immunotherapy.

A thin, tube-like instrument used to look at tissues and organs inside the abdomen. A laparoscope has a light and a lens for viewing and may have a tool to remove tissue.

A type of protein made in the laboratory that can locate and bind to substances in the body, including tumor cells. There are many kinds of monoclonal antibodies. Each monoclonal antibody is made to find one substance. Monoclonal antibodies are being used to treat some types of cancer and are being studied in the treatment of other types. They can be used alone or to carry drugs, toxins, or radioactive materials directly to a tumor.