Delays to cancer surgery and other treatment caused by the Covid-19 crisis could result in thousands of additional deaths linked to the pandemic in England, a major new study reports.
New modelling has revealed the extent of the impact that disruption to the cancer care and diagnosis pathway could have on the survival of cancer patients.
Many cancer patients may end up experiencing delays of several months to their cancer treatment in the context of the pandemic - including in operations to remove tumours. Those patients whose cancer will have progressed during the delay and who might otherwise have been effectively cured by surgery could now be at risk of their cancer coming back and shortening their lives.
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Scientists at The Institute of Cancer Research, London, analysed existing Public Health England data on delays to cancer surgery on patients' five-year survival rates to estimate the effect of three-month or six-month delays, respectively.
Their modelling, which factored in the risk of hospital-acquired Covid-19-infection, showed dramatic differences in the impact of delay on cancer survival depending on patients' age, their cancer type and whether it was earlier- or later-stage cancer.
The team found that a delay of three months across all 94,912 patients who would have had surgery to remove their cancer over the course of a year would lead to an additional 4,755 deaths. Taking into account the length of time that patients are expected to live after their surgery, the delay would amount to 92,214 years of life lost.
They estimated that surgery for cancer affords on average 18.1 life years per patient, of which on average 1.0 years are lost for a three-month delay or 2.2 years are lost with a six-month delay. Considering healthcare resource more broadly, they compared this with hospital treatment for Covid-19, from which on average 5.1 life years were currently gained per patient.
The new study was published in Annals of Oncology today (Wednesday), and was funded by The Institute of Cancer Research (ICR) itself, with support from Cancer Research UK.
Study leader Professor Clare Turnbull, Professor of Cancer Genomics at The Institute of Cancer Research, London, said:
"The Covid-19 crisis has put enormous pressure on the NHS at every stage of the cancer pathway, from diagnosis right across to surgery and other forms of treatment. Our study shows the impact that delay to cancer treatment will have on patients, with England, and the UK more widely, potentially set for many thousands of attributable cancer deaths as a result of the pandemic.