Clinical, cosmetic and investigational dermatology · 2025
Celiac Disease as a Genetic Predisposing Factor for Dermatitis Herpetiformis: A Two-Sample Mendelian Randomization Analysis.
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Su Yani, Xu Peng, Zhang Ming, Wen Pengfei, Xu Ke, Xie Jiale, Wan Xianjie, Liu Lin, Yang Zhi, Yang Mingyi
Аннотация
OBJECTIVE: Observational studies have consistently highlighted a robust clinical association between celiac disease (CD) and dermatitis herpetiformis (DH). Building on this foundation, the present study aims to investigate whether this observed relationship is underpinned by a causal genetic mechanism, providing insights into the potential hereditary basis of their connection.
METHODS: This study employed bidirectional two-sample Mendelian randomization (MR) analysis to investigate the potential genetic causality between CD and DH, utilizing genome-wide association study (GWAS) summary data. To comprehensively examine the genetic relationship between CD and DH, we applied multiple MR methodologies. Furthermore, to enhance the robustness and credibility of our results, we conducted extensive sensitivity analyses.
RESULTS: The fixed-effects inverse variance weighted (IVW) analysis revealed a significant positive genetic causal relationship between CD and DH (P = 0.001, odds ratio [OR] 95% confidence interval [CI]: 1.546 [1.195-1.999]). In contrast, no significant genetic causality was found in the reverse direction, from DH to CD (P = 0.113, OR 95% CI: 1.039 [0.991-1.090]). Notably, the MR analysis revealed no evidence of heterogeneity, further reinforcing the reliability of the fixed-effects IVW model. Additionally, sensitivity analyses confirmed the stability and robustness of the results, further validating the integrity of the conclusions drawn from the MR analysis.
CONCLUSION: The results of our study indicate that CD acts as a genetic susceptibility factor for the development of DH. Furthermore, the occurrence of DH in individuals with a history of CD appears to be attributed to a causal genetic relationship, suggesting that the genetic predisposition linked to CD may drive the manifestation of DH.
METHODS: This study employed bidirectional two-sample Mendelian randomization (MR) analysis to investigate the potential genetic causality between CD and DH, utilizing genome-wide association study (GWAS) summary data. To comprehensively examine the genetic relationship between CD and DH, we applied multiple MR methodologies. Furthermore, to enhance the robustness and credibility of our results, we conducted extensive sensitivity analyses.
RESULTS: The fixed-effects inverse variance weighted (IVW) analysis revealed a significant positive genetic causal relationship between CD and DH (P = 0.001, odds ratio [OR] 95% confidence interval [CI]: 1.546 [1.195-1.999]). In contrast, no significant genetic causality was found in the reverse direction, from DH to CD (P = 0.113, OR 95% CI: 1.039 [0.991-1.090]). Notably, the MR analysis revealed no evidence of heterogeneity, further reinforcing the reliability of the fixed-effects IVW model. Additionally, sensitivity analyses confirmed the stability and robustness of the results, further validating the integrity of the conclusions drawn from the MR analysis.
CONCLUSION: The results of our study indicate that CD acts as a genetic susceptibility factor for the development of DH. Furthermore, the occurrence of DH in individuals with a history of CD appears to be attributed to a causal genetic relationship, suggesting that the genetic predisposition linked to CD may drive the manifestation of DH.