Abstract
Background & aimsHyperglycemia is associated with an increased risk of gallbladder cancer (GBC), potentially by inhibiting gallbladder motility and inducing prolonged cholestasis. Although intermediate hyperglycemia (or prediabetes) is highly reversible, evidence is lacking about whether prediabetes persistence or remission is associated with an altered GBC risk. MethodsThis nationwide cohort study included 6058,662 adults without diabetes or cancer who underwent national health examinations twice in 2-year intervals between 2009 (S1) and 2011 (S2) and were followed-up until 2018. Prediabetes was defined as a fasting plasma glucose level of 100–125 mg/dL. We categorized changes in prediabetes status into: stable normoglycemia, new-onset prediabetes, prediabetes remission, and persistent prediabetes groups. GBC risk was estimated using Cox proportional hazards models, after adjusting for potential confounders. ResultsDuring 38.6 million person-years (median 6.4 years) of follow-up, 1349 new GBC cases were identified. Among 1409,474 individuals with prediabetes at S1, 768,515 achieved prediabetes remission at S2, outnumbering the 640,959 individuals with persistent prediabetes. GBC incidence probability was consistently higher among individuals with persistent prediabetes than in individuals with stable normoglycemia or prediabetes remission (all log-rank P < 0.01). Compared with stable normoglycemia, persistent prediabetes was associated with increased GBC risk (adjusted hazard ratio [aHR], 95 % CI: 1.21, 1.04 to 1.41). The aHRs of GBC were 1.14 (95 % CI, 0.99 to 1.33) and 1.03 (95 % CI, 0.88 to 1.21) for new-onset prediabetes and prediabetes remission, respectively. ConclusionsIndividuals with persistent prediabetes had a significantly increased risk of GBC, whereas those with prediabetes remission had no increased risk. Achieving prediabetes remission has a significant potential to reduce the risk of GBC.
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