ArticleOral health & preventive dentistry2026
Association Between Oral Cavity Cancer and Lymphoma: A Bidirectional Mendelian Randomization Analysis.
Article in Oral health & preventive dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeEmerging evidence suggests a potential association between oral cavity cancer (OCC) and lymphoma. This study aimed to investigate whether this association reflects a causal relationship. MATERIALS AND
methodsA two-sample bidirectional Mendelian randomization (MR) approach was utilized to screen genetic instrumental variables (IVs) obtained from genome-wide association studies (GWAS) of OCC and lymphoma, applied various MR methods (inverse variance weighted [IVW] as the main method) to assess the causal relationship between the two malignancies, and performed sensitivity, heterogeneity, and pleiotropic tests to evaluate reliability.
resultsNo bidirectional causal association between OCC and Hodgkin lymphoma (HL) or overall non-Hodgkin lymphoma (NHL) was found. Subgroup analysis also showed that no noteworthy bidirectional causal relationship between OCC and NHL subtypes. However, we identified a statistically significant inverse correlation between mature T/NK-cell lymphoma and OCC (IVW: odds ratio [OR] 0.985, 95% confidence interval [CI]: 0.820-0.978, p=0.013). Patients initially diagnosed with mature T/NK-cell lymphoma would have a decreased risk of OCC.
conclusionThis MR study ruled out the causal relationship between OCC and lymphoma. Future multiethnic studies with substantial sample sizes are need to replicate our findings.
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