CLAIM CARD
The dose-response meta-analytic signal in Shen 2025 suggests that the protective association for colorectal neoplasms may be related to cumulative metformin exposure, an inference supported by the inclusion of dose as a variable in the analysis. However, without the underlying pharmacokinetic data from the trials included in Shen 2025's meta-analysis, it is impossible to correlate specific plasma concentrations with the observed clinical effect. The mechanistic link between oral dose, systemic exposure, and the downstream chemopreventive effect remains an area requiring further direct investigation.
Evidence grade: exploratory
Contradiction status: none
Publication: 5f566366-fb20-4402-ba24-c1117573f97f
Provenance: Derivation Web chain
Citation Support
source_1Zaveri 2026source_2Wu 2026source_3Hong 2026source_4Lee 2026source_5Seo 2026