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At-home test could boost screening for cervical cancer

AFP Relax News

Published on MSD Connect: November 2019

An at-home, non-invasive screening for cervical pre-cancer could increase compliance with recommended follow-up tests, according to research presented Monday at a cancer conference. The new screening, called the S5 test, is based on a urine sample or a vaginal swab that women can collect themselves at home and have sent to a lab.

Person giving a urine sample to a doctor

Researchers look for a change in DNA associated with a human gene and the four most dangerous types of the human papillomavirus (HPV), a common sexually transmitted infection linked to cervical cancer. The protocol was developed by Belinda Nedjai of the Molecular Epidemiology Lab at Queen Mary University to increase the compliance of women who do not return to the clinic after an abnormal test result.

“These are typically older women who find the follow-up painful,” she said.

“The test is considerably less invasive than those requiring a speculum,” Nedjai told AFP. “It's also fast – after samples are sent to the lab, it takes only hours to do the screening.”

“These women can give a swab, or a urine sample and we can test them,” she said. “It's going to be beneficial.”

Currently, the gold standard for cervical-cancer screening is an HPV test and a pap smear, usually following a positive HPV result. Patients with an abnormal pap smear are then referred for another screening, called a colposcopy.

A win-win process

“The S5 screening could reduce the number of women sent for a colposcopy,” Nedjai said.

It was tested on 620 patients at Royal London Hospital who had an abnormal pap smear or positive HPV test.

“We found that the S5 classifier – with or without HPV testing – worked well in both urine and vaginal samples,” said Nedjai, who unveiled the findings today at the National Cancer Research Institute (NCRI) Cancer Conference in Glasgow.

“It distinguished between women who had no pre-cancerous lesions and those who had (higher-risk) lesions.”

“In patients with HPV, an S5 urine test was better at correctly identifying women with pre-cancer lesions than testing for a high-risk type of HPV,” she said. Vaginal samples worked equally well.

As a standalone test in patients who had not been screened for HPV, the pre-cancer was identified at least 85 percent of positive cases. Cervical screening is at a 20-year low in Britain, according to Public Health England, which launched a campaign earlier this year to promote screening.

Nedjai explained there's still a lot of research that needs to be done before the S5 test could be used in place of HPV testing. Implementation of the S5 test may be fast-tracked in low- and medium-income countries where cervical cancer screening is not available, Nedjai said. “For them, it's a win-win process.”

There were more than 311,000 deaths from cervical cancer in 2018, and about 90 percent were in less-developed countries, according to the World Health Organization.

The research has not yet been submitted for peer-reviewed publication.

The NCRI Cancer Conference runs from November 3 to 5.

This article was originally published by AFP Relax News, 4 November 2019.

This article was from AFP Relax News and was legally licensed through the NewsCred publisher network. Please direct all licensing questions to legal@newscred.com.

Minor grammatical and translational editorial changes may have been made to this article by MSD, which has no impact on the content of the article. This is to ensure all articles remain as relevant as possible to UK Healthcare Professionals.

GB-NON-02035 | Date of Preparation: December 2019

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