Cervical screening every five years just as good as very three


Cervical screening frequency could be changed to every 5 years instead of 3

Researchers have called the results ‘reassuring’ (Picture: Getty)

Screening people for cervical cancer every five years instead of every three could still prevent as many cases of cancer, a new study suggests.

Researchers at King’s College London (KCL) have said screening women and people with a cervix aged 24 to 49 who test negative for human papillomavirus (HPV) at five-year intervals is just as effective as screening every three years.

The study published in the British Medical Journal today looked at data on 1.3 million women in England.

It found that those aged 24 to 49, were less likely to develop cervical lesions, abnormal changes in the cells that line the cervix known as CIN3+ and cervical cancer three years after a negative HPV screen compared to a negative smear test.

Invitations for cervical screenings in England are currently sent out to women and people with a cervix aged 25 to 49 every three years and every five years to those aged 50 to 64.

The researchers at KCL said that high-risk HPV DNA is found in more than 99% of all cervical cancers.

Before 2019 cytology tests, otherwise known as smear tests, checked cervical cells for abnormalities first but now samples are tested for HPV first.

The KCL team said that because an HPV infection comes before abnormal cells develop, HPV testing detects more people at risk of cervical cancer.


File photo dated 19/05/08 of a woman looking at matter under a microscope. There has been a steep rise in rates of cervical cancer among women aged 25 to 29, a charity has warned. PA Photo. Issue date: Wednesday January 22, 2020. Cancer Research UK said new figures show a decade-long lack of progress in tackling the disease, with worryingly low numbers of women attending screening. See PA story HEALTH Cervical. Photo credit should read: David Davies/PA Wire

Before 2019 smear test samples were checked for abnormal cells first now they are screened for HPV first (Picture: PA)

Lead author Dr Matejka Rebolj, senior epidemiologist at KCL, said the results were ‘very reassuring’.

‘They build on previous research that shows that following the introduction of HPV testing for cervical screening, a five-year interval is at least as safe as the previous three-year interval,’ she added.

‘Changing to five-yearly screening will mean we can prevent just as many cancers as before, while allowing for fewer screens.’

Researchers from KCL, the University of Manchester, and the NHS analysed data from the NHS Cervical Screening Programme in England and followed those attending screening for two rounds, the first from 2013-2016 with a follow up by end of 2019.

They found that people under 50 eligible for screening who had a negative HPV screen in the first round had a lower risk of detection of CIN3+ in the second round compared to cytology tests.

The study found that 1.21 in 1,000 people had a detection of CIN3+ after a negative HPV screen compared to 4.52 in 1,000 people after a negative cytology.

Dr Rebolj said: ‘This monumental study relied on a multidisciplinary team including those in the NHS Cervical Screening Programme in England, working with women undergoing screening and their samples, and our academic partners.

‘This partnership provides evidence that will best serve the millions of women invited for screening throughout most of their adult lives.

‘These promising results show most women and people with a cervix do not need to be screened as frequently as they are now.’

Michelle Mitchell, Cancer Research UK’s chief executive, said: ‘This large study shows that offering cervical screening using HPV testing effectively prevents cervical cancer, without having to be screened as often.

‘This builds on findings from years of research showing HPV testing is more accurate at predicting who is at risk of developing cervical cancer compared to the previous way of testing.

‘As changes to the screening programmes are made, they will be monitored to help ensure that cervical screening is as effective as possible for all who take part.

‘It’s important to remember, screening is for people without symptoms. So, if you notice any unusual changes for you, do not wait for a screening invitation – speak to your doctor.’

Get in touch with our news team by emailing us at [email protected].

For more stories like this, check our news page.

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