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Friday, July 10, 1998 Published at 18:40 GMT 19:40 UK


Health

New cancer test 'better than smears'

New test could replace cervical smears

A new test that detects a sexually transmitted virus blamed for most cases of cervical cancer works better at detecting cancer than the widely used Pap smear test, researchers claim.

The test checks for the human papilloma virus (HPV), also known as human wart virus. The virus, which causes genital warts, is the main cause of cervical cancer in women.

Researchers at a conference on the subject in Montreal said 26% of Americans are infected with the virus. About 1% of them have genital warts, 5% have pre-cancerous lesions and 20% have latent infections which have no symptoms at all.

More sensitive

Attila Lorinez and colleagues at Georgetown University in Washington said a new HPV test, called Hybrid Capture, was more sensitive than the Pap smear in catching cervical cancer and the pre-cancerous changes that can develop into cancer.

His team reviewed tests of more than 10,000 women in Costa Rica whose average age was 37. They had the Pap test that most adult women now have every year or so, plus the new HPV test.

The Pap test detected 92% of the cancers and 78% of pre-cancerous cases, Lorinez told the International Conference of Human Papillomavirus Infections and Cervical Cancer.

But the Hybrid Capture test, made by US company Digene Corp, detected all the cancers and 90% of pre-cancerous lesions, known as dysplasias.

Better for older women

"The HPV test was 10 to 15% more sensitive than Pap smears," Lorinez said in a statement. The older the woman, the better it worked, he said.

The U.S. Food and Drug Administration approved Digene's test last September. It is also approved for use in Europe. The company also wants to use its technology for other tests for sexually transmitted diseases such as chlamydia.



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Internet Links

Imperial Cancer Research Fund

Cancerhelp UK

Digene Corporation


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