Journal of cosmetic dermatology · 2025
Association of Vitiligo With Autoimmune Disorders: A Bidirectional Two-Sample and Summary-Based Mendelian Randomization Study.
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Huang Jiangfeng, Jiang Ling, Hu Yibo, Fu Chuhan, Zhang Keyi, Wen Yaqing, Zhou Shu, Huang Jinhua, Chen Jing, Zeng Qinghai
Аннотация
BACKGROUND: The existence of a definite direct causal relationship between vitiligo and diverse autoimmune disorders remains unknown due to the influence of confounding factors and potential reverse causality.
METHODS: Mendelian randomization (MR) is a technique employed to explore causal connections between two phenotypes. In our research, bidirectional two-sample MR analyses were utilized to evaluate the causal connections between vitiligo and multiple autoimmune diseases (systemic lupus erythematosus, Graves' disease, inflammatory bowel disease, alopecia areata [AA], type 1 diabetes mellitus [T1MD], and rheumatoid arthritis [RA]). Furthermore, we utilized summary-based Mendelian randomization (SMR) analysis to search for common susceptibility loci between two diseases that reciprocally elevate each other's risk. Finally, colocalization analyses were used to validate the robustness of the selected genes.
RESULTS: There was an indication of potential causation between RA and vitiligo (IVW OR = 1.19; 95% CI = 1.05-1.13; p = 0.008). Furthermore, evident causal connections exist between vitiligo and AA (IVW OR = 1.14; 95% CI = 1.04-1.26; p = 0.008), T1MD (IVW OR = 1.14; 95% CI = 1.06-1.23; p < 0.001), and RA (IVW OR = 1.08; 95% CI = 1.03-1.13; p < 0.001). In SMR analyses and colocalization analyses, we identified three shared genes associated with both vitiligo and RA, including: FCRL3, FADS1, and FADS2.
CONCLUSION: Our findings demonstrated that vitiligo and RA mutually act as risk factors for each other. Additionally, vitiligo had significant causal relationships with AA and type 1 diabetes.
METHODS: Mendelian randomization (MR) is a technique employed to explore causal connections between two phenotypes. In our research, bidirectional two-sample MR analyses were utilized to evaluate the causal connections between vitiligo and multiple autoimmune diseases (systemic lupus erythematosus, Graves' disease, inflammatory bowel disease, alopecia areata [AA], type 1 diabetes mellitus [T1MD], and rheumatoid arthritis [RA]). Furthermore, we utilized summary-based Mendelian randomization (SMR) analysis to search for common susceptibility loci between two diseases that reciprocally elevate each other's risk. Finally, colocalization analyses were used to validate the robustness of the selected genes.
RESULTS: There was an indication of potential causation between RA and vitiligo (IVW OR = 1.19; 95% CI = 1.05-1.13; p = 0.008). Furthermore, evident causal connections exist between vitiligo and AA (IVW OR = 1.14; 95% CI = 1.04-1.26; p = 0.008), T1MD (IVW OR = 1.14; 95% CI = 1.06-1.23; p < 0.001), and RA (IVW OR = 1.08; 95% CI = 1.03-1.13; p < 0.001). In SMR analyses and colocalization analyses, we identified three shared genes associated with both vitiligo and RA, including: FCRL3, FADS1, and FADS2.
CONCLUSION: Our findings demonstrated that vitiligo and RA mutually act as risk factors for each other. Additionally, vitiligo had significant causal relationships with AA and type 1 diabetes.