Home > Publications database > Making colonoscopy-based screening more efficient: a 'gateopener' approach. |
Journal Article | DKFZ-2022-02371 |
; ; ; ;
2023
Wiley-Liss
Bognor Regis
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Please use a persistent id in citations: doi:10.1002/ijc.34317
Abstract: Screening colonoscopy for early detection and prevention of colorectal cancer (CRC) is mostly used inefficiently. Here, we assessed the potential of an innovative approach to colonoscopy-based screening, by use of a single, low threshold fecal immunochemical test (FIT) as a 'gateopener' for screening colonoscopy. Using COSIMO, a validated simulation model, we modelled scenarios including either direct invitation to screening colonoscopy or an alternative approach involving mailing a single ('gateopener') FIT along with an invitation to colonoscopy contingent on a FIT value above a low threshold yielding a 50% positivity rate (i.e., every other pre-test will be positive). Under plausible assumptions on screening offer adherence, we found that such 'gateopener screening' (use of screening colonoscopy contingent on a positive, low threshold gateopener FIT) approximately doubled cancer detection rates versus conventional screening. In those spared from screening colonoscopy due to a negative gateopener FIT pretest, numbers needed to screen were 10-times higher versus those for individuals with a positive FIT, peaking in >2000 and >3800 (hypothetically) needed colonoscopies to detect one case of cancer in men and women, respectively. Gateopener screening resulted in 42-51% and 59-65% more prevented CRC cases and deaths, respectively. In summary, by directing colonoscopy capacities to those most likely to benefit, offering screening colonoscopy contingent on a 'gateopener' low-threshold FIT would substantially enhance efficiency of colonoscopy screening.
Keyword(s): colonoscopy ; colorectal cancer ; fecal immunochemical testing ; modelling ; screening
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