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Groups question use of DNA alternative to Pap smear

– A high-tech screening tool for cervical cancer is facing pushback from more than a dozen patient groups, who warn that the genetic test could displace a simpler, cheaper and more established mainstay of women’s health: the Pap smear.

The new test from Roche uses DNA to detect the human papillomavirus, or HPV, which causes nearly all cases of cervical cancer. While such technology has been available for years, Roche now wants the FDA to approve its test as a first-choice option for cervical cancer screening, bypassing the decades-old Pap test.

But a number of women’s groups – including the American Medical Women’s Association and Our Bodies Ourselves – warn that moving to a DNA-based testing model would be a “radical shift” in medical practice that could lead to confusion, higher costs and overtreatment.

“It replaces a safe and effective, well-established screening tool and regimen that has prevented cervical cancer successfully in the U.S. with a new tool and regimen not proven to work in a large U.S. population,” state the groups in a letter to FDA Commissioner Dr. Margaret Hamburg.

The letter, dated Monday, is signed by 17 patient advocacy groups, including Consumers Union, the Cancer Prevention and Treatment Fund and the National Alliance for Hispanic Health.

Chief among the advocates’ concerns is that HPV-only testing could lead to overtreatment of younger women who carry the virus but have little risk of developing actual cancer. Most sexually active young people will contract HPV, though their bodies usually eliminate the virus within a few months. Only yearslong infections develop into cancer.

“Unfortunately, the HPV test by itself isn’t very useful because so many young women have HPV that will disappear without any treatment,” said Diana Zuckerman of the Cancer Prevention and Treatment Fund. “Having an HPV test without also getting a Pap smear to check for problems is going to scare a lot of women who are not developing cervical cancer.”

An FDA spokeswoman said the agency could not comment on the letter since it deals with a product under review.

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