SCIENCE REPORT - Blood Test For Ovarian Cancer

（单词翻译）

SCIENCE REPORT - February 28, 2002: Blood Test For Ovarian Cancer

By Nancy Steinbach
This is the VOA Special English Science Report.

American medical researchers say they have developed a simple blood test that can tell if a woman has ovarian
cancer. Cancer of the ovaries is one of the most difficult cancers to find and cure. That is because there has been
no effective way to tell if a woman has the disease¹ until it has spread throughout² the body.

Researchers say about twenty-four-thousand American women are found to have ovarian cancer every year.
About fourteen-thousand of them die each year. Cancer experts say that ninety percent of women with ovarian
cancer could be cured if the cancer was found early.

Researchers at the National Cancer Institute and the Food and Drug Administration³ developed the new test. It
requires a very small amount of blood and gives results in thirty minutes. The test looks for a group of proteins
that is present in the blood of women with ovarian cancer. The researchers reported their work in the British
publication⁴ The Lancet.

In the study, the researchers took blood from fifty women known⁵ to have ovarian cancer and fifty women without
the disease. They examined the blood samples using a computer program developed by the Correlogic Systems
Company of Bethesda, Maryland. The computer program found a group of five proteins in the blood samples of
all the cancer victims⁶.

The researchers then looked for that protein group in one-hundred-sixteen other blood samples. Fifty of the blood
samples were from women with ovarian cancer. Sixty-six were from women without the disease. The researchers
did not know which samples came from which women. The test correctly identified all fifty cases of ovarian
cancer, including eighteen that were in the earliest forms of the disease. However, the test falsely identified three
healthy women as having ovarian cancer.

The researchers now plan to do more tests involving larger numbers of women. They say it will be several years
before the test could be used for all women. They say it will most likely be used first for women who have a
greater than normal chance of developing⁷ ovarian cancer.

The researchers say their testing method could be used to find other cancers, too. They are working to develop
similar tests to find cancers of the pancreas, breast⁸ and prostate.

This VOA Special English Science Report was written by Nancy Steinbach.

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