MR analysis confirmed that downregulation of PRR4 expression is a risk factor for CRSwNP (OR = 0.99951, P = 0.04280), with the caveat that the very small effect size and borderline significance indicate limited evidence strength at present.
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Multi-omics integration and <i>in vitro</i> validation identify IL4R, IMPA2, and PRR4 as key therapeutic targets in chronic rhinosinusitis with nasal polyps.
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MR analysis preliminarily suggested that IL4R and IMPA2 may be potential risk factors for CRSwNP, while PRR4 may serve as a potential protective factor, though the effect sizes were modest (OR values close to 1) and P values were borderline significant (0.043–0.045), indicating limited evidence strength.