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Chile has paid for preventive gallbladder removal in 35 to 49 year olds with stones since 2006 without a design that can show whether it prevents cancer deaths. Targeting the operation by region, ancestry and risk score, with an evaluation built in, would answer the question the world's only such programme has left open for twenty years.
The GES programme has issued 284,139 notifications since 2006. Standardised gallbladder cancer mortality has fallen, but was falling before the programme, and the 2019 analysis found the targeted age group's mortality decline doubled (4 to 8 percent per period) without a national break in trend. High-incidence areas do not receive proportionally more operations. Genetic work shows Mapuche ancestry raises risk independently of stones and body mass index, and exome studies show Chilean tumours carry the lowest mutation burden of five countries studied. A risk-based redesign (region, ancestry-informed score, sex, typhoid history) with a stepped-wedge or regression-discontinuity evaluation would make the programme both more efficient and, for the first time, measurable.
Targeted therapy prevalence estimates from one country may not hold in another, so a UK cohort, with its own ancestry mix, would need its own molecular survey before assuming HER2 or other rates from Asian or Latin American series.
The only national prophylactic cholecystectomy programme in the world has run for nearly twenty years without a design that can show whether it works. Targeting by region and risk, and building in an evaluation, is the obvious next step.
The most rigorous evaluation of the Chilean programme available; read alongside Mardones and Frenz (2019) and Samaniego and colleagues (2024).
Together with the 2024 evaluation and the American Journal of Epidemiology analysis, this is the evidence base for whether a prophylactic cholecystectomy policy prevents gallbladder cancer deaths: suggestive in the target age band, not yet convincing nationally.
Shares Prophylactic (preventive) cholecystectomy, Screening, Gallbladder cancer roadmap: from a chance finding at gallstone surgery to a disease with its own trials, Prevention we already have is not deployed and the tag gallbladder-evidence.
Shares Prophylactic (preventive) cholecystectomy, Screening, Gallbladder cancer roadmap: from a chance finding at gallstone surgery to a disease with its own trials, Prevention we already have is not deployed and the tag gallbladder-evidence.
Shares Prophylactic (preventive) cholecystectomy, Gallbladder cancer roadmap: from a chance finding at gallstone surgery to a disease with its own trials, National Cancer Institute (NIH), Gallbladder cancer and the tag gallbladder-evidence.
Shares Prophylactic (preventive) cholecystectomy, Screening, Gallbladder cancer roadmap: from a chance finding at gallstone surgery to a disease with its own trials, Gallbladder cancer and the tag gallbladder-evidence.
Shares Screening, Gallbladder cancer roadmap: from a chance finding at gallstone surgery to a disease with its own trials, Gallbladder cancer and the tag gallbladder-evidence.
Shares Screening, Gallbladder cancer roadmap: from a chance finding at gallstone surgery to a disease with its own trials, Gallbladder cancer and the tag gallbladder-evidence.
Shares Prophylactic (preventive) cholecystectomy, Gallbladder cancer and the tag gallbladder-evidence.
Shares Screening, Gallbladder cancer roadmap: from a chance finding at gallstone surgery to a disease with its own trials, Gallbladder cancer and the tag gallbladder-evidence.