Causal association between serum total bilirubin and cholelithiasis: a bidirectional two-sample Mendelian randomization study
BackgroundObservational studies about the association between serum total bilirubin and cholelithiasis are inconsistent. Hence, it is essential to reevaluate the association between serum total bilirubin and cholelithiasis and to verify whether such association is causal or not.MethodsWe selected si...
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Frontiers Media S.A.
2023-07-01
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| Series: | Frontiers in Endocrinology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fendo.2023.1178486/full |
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| author | Yang Sun Shaojie Yang Wanlin Dai Zhuyuan Zheng Xiaolin Zhang Yuting Zheng Jingnan Wang Shiyuan Bi Yunlong Duan Shuodong Wu Jing Kong |
| author_facet | Yang Sun Shaojie Yang Wanlin Dai Zhuyuan Zheng Xiaolin Zhang Yuting Zheng Jingnan Wang Shiyuan Bi Yunlong Duan Shuodong Wu Jing Kong |
| author_sort | Yang Sun |
| collection | DOAJ |
| description | BackgroundObservational studies about the association between serum total bilirubin and cholelithiasis are inconsistent. Hence, it is essential to reevaluate the association between serum total bilirubin and cholelithiasis and to verify whether such association is causal or not.MethodsWe selected single-nucleotide polymorphisms (SNPs) that are strongly associated with exposure as instrumental variable and conducted a bidirectional two-sample Mendelian randomization (MR) study to explore the causal association between serum total bilirubin and cholelithiasis. We implemented the inverse-variance weighted approach as a primary analysis to combine the Wald ratio estimates. Four additional analyses, namely, MR-Egger regression, weighted median, weighted mode, and MR–pleiotropy residual sum and outlier (PRESSO), were utilized to investigate the causal association and the influence of potential pleiotropy.ResultsA total of 116 SNPs were selected as valid instrumental variables to estimate the causal association of serum total bilirubin on cholelithiasis, and causal association between genetically determined serum total bilirubin and cholelithiasis was demonstrated [beta = 0.10; 95% confident interval (CI), 0.07 to 0.14; p < 0.001]. Likewise, the other methods, namely, the weighted median (beta = 0.12; 95% CI, 0.08 to 0.15; p < 0.001), MR-Egger (beta = 0.11; 95% CI, 0.08 to 0.15; p < 0.001), weighted mode (beta = 0.11; 95% CI, 0.08 to 0.15; p < 0.001), and MR-PRESSO approaches, further confirmed that this result (p = 0.054) indicates similar results. In addition, seven SNPs were selected as instrumental variable to estimate causal association of cholelithiasis on serum total bilirubin, and the result supported the causal effect of cholelithiasis to serum total bilirubin (beta = 0.12; 95% CI, 0.09 to 0.15; p < 0.001). At the same time, the other methods, namely, the weighted median (beta = 0.10; 95% CI, 0.06 to 0.13; p < 0.001), MR-Egger (beta = 0.12; 95% CI, 0.07 to 0.18; p = 0.007), weighted mode (beta = 0.09; 95% CI, 0.03 to 0.14, p = 0.019), and MR-PRESSO methods, further confirmed this result (p < 0.001).ConclusionOur MR study revealed that the serum total bilirubin was causally associated with the risk of cholelithiasis, and the genetic predisposition to cholelithiasis was causally associated with the increased serum total bilirubin levels. |
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| spelling | doaj.art-a5f036697c674db2bdd415e9229ffd9a2023-07-04T13:57:00ZengFrontiers Media S.A.Frontiers in Endocrinology1664-23922023-07-011410.3389/fendo.2023.11784861178486Causal association between serum total bilirubin and cholelithiasis: a bidirectional two-sample Mendelian randomization studyYang Sun0Shaojie Yang1Wanlin Dai2Zhuyuan Zheng3Xiaolin Zhang4Yuting Zheng5Jingnan Wang6Shiyuan Bi7Yunlong Duan8Shuodong Wu9Jing Kong10Biliary Surgery (2nd General) Unit, Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, ChinaBiliary Surgery (2nd General) Unit, Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, ChinaInnovation Institute of China Medical University, Shenyang, ChinaBiliary Surgery (2nd General) Unit, Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, ChinaBiliary Surgery (2nd General) Unit, Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, ChinaBiliary Surgery (2nd General) Unit, Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, ChinaBiliary Surgery (2nd General) Unit, Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, ChinaBiliary Surgery (2nd General) Unit, Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, ChinaBiliary Surgery (2nd General) Unit, Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, ChinaBiliary Surgery (2nd General) Unit, Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, ChinaBiliary Surgery (2nd General) Unit, Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, ChinaBackgroundObservational studies about the association between serum total bilirubin and cholelithiasis are inconsistent. Hence, it is essential to reevaluate the association between serum total bilirubin and cholelithiasis and to verify whether such association is causal or not.MethodsWe selected single-nucleotide polymorphisms (SNPs) that are strongly associated with exposure as instrumental variable and conducted a bidirectional two-sample Mendelian randomization (MR) study to explore the causal association between serum total bilirubin and cholelithiasis. We implemented the inverse-variance weighted approach as a primary analysis to combine the Wald ratio estimates. Four additional analyses, namely, MR-Egger regression, weighted median, weighted mode, and MR–pleiotropy residual sum and outlier (PRESSO), were utilized to investigate the causal association and the influence of potential pleiotropy.ResultsA total of 116 SNPs were selected as valid instrumental variables to estimate the causal association of serum total bilirubin on cholelithiasis, and causal association between genetically determined serum total bilirubin and cholelithiasis was demonstrated [beta = 0.10; 95% confident interval (CI), 0.07 to 0.14; p < 0.001]. Likewise, the other methods, namely, the weighted median (beta = 0.12; 95% CI, 0.08 to 0.15; p < 0.001), MR-Egger (beta = 0.11; 95% CI, 0.08 to 0.15; p < 0.001), weighted mode (beta = 0.11; 95% CI, 0.08 to 0.15; p < 0.001), and MR-PRESSO approaches, further confirmed that this result (p = 0.054) indicates similar results. In addition, seven SNPs were selected as instrumental variable to estimate causal association of cholelithiasis on serum total bilirubin, and the result supported the causal effect of cholelithiasis to serum total bilirubin (beta = 0.12; 95% CI, 0.09 to 0.15; p < 0.001). At the same time, the other methods, namely, the weighted median (beta = 0.10; 95% CI, 0.06 to 0.13; p < 0.001), MR-Egger (beta = 0.12; 95% CI, 0.07 to 0.18; p = 0.007), weighted mode (beta = 0.09; 95% CI, 0.03 to 0.14, p = 0.019), and MR-PRESSO methods, further confirmed this result (p < 0.001).ConclusionOur MR study revealed that the serum total bilirubin was causally associated with the risk of cholelithiasis, and the genetic predisposition to cholelithiasis was causally associated with the increased serum total bilirubin levels.https://www.frontiersin.org/articles/10.3389/fendo.2023.1178486/fullMendelian randomizationtotal bilirubincholelithiasiscausal associationbidirectionaltwo-sample |
| spellingShingle | Yang Sun Shaojie Yang Wanlin Dai Zhuyuan Zheng Xiaolin Zhang Yuting Zheng Jingnan Wang Shiyuan Bi Yunlong Duan Shuodong Wu Jing Kong Causal association between serum total bilirubin and cholelithiasis: a bidirectional two-sample Mendelian randomization study Frontiers in Endocrinology Mendelian randomization total bilirubin cholelithiasis causal association bidirectional two-sample |
| title | Causal association between serum total bilirubin and cholelithiasis: a bidirectional two-sample Mendelian randomization study |
| title_full | Causal association between serum total bilirubin and cholelithiasis: a bidirectional two-sample Mendelian randomization study |
| title_fullStr | Causal association between serum total bilirubin and cholelithiasis: a bidirectional two-sample Mendelian randomization study |
| title_full_unstemmed | Causal association between serum total bilirubin and cholelithiasis: a bidirectional two-sample Mendelian randomization study |
| title_short | Causal association between serum total bilirubin and cholelithiasis: a bidirectional two-sample Mendelian randomization study |
| title_sort | causal association between serum total bilirubin and cholelithiasis a bidirectional two sample mendelian randomization study |
| topic | Mendelian randomization total bilirubin cholelithiasis causal association bidirectional two-sample |
| url | https://www.frontiersin.org/articles/10.3389/fendo.2023.1178486/full |
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