目的采用孟德尔随机化(MR)研究探讨2型糖尿病(T2DM)、1型糖尿病(T1DM)、体质指数(BMI)与甲状腺乳头状癌之间的因果关系。
方法以公开发表的全基因组关联研究(GWAS)作为数据源,筛选出与暴露相关的单核苷酸多态性(SNPs)作为工具变量,采用两样本MR法中的逆方差加权(IVW)、加权中位数、MR-Egger、简单模式和加权模式法评估T2DM、T1DM、BMI与甲状腺乳头状癌之间的因果关联。通过异质性分析、多效性分析及敏感性分析评估结果的可靠性和稳定性。
结果针对T2DM、T1DM、BMI,最终分别筛选出118、76、486个强工具变量进行两样本MR分析。在5种MR分析方法中,IVW分析的T2DM与甲状腺乳头状癌因果关系的结果有统计学意义[比值比( OR)=1.147(95% CI:1.026~1.282), P=0.016],其余4种分析方法的遗传效应值 β与IVW的 β方向相同;异质性分析、多效性分析及敏感性分析结果均显示 P>0.05。T1DM[IVW法: OR=1.000(95% CI:0.952~1.051), P=0.994]与甲状腺乳头状癌、BMI[IVW法: OR=1.214(95% CI:0.923~1.598), P=0.166]与甲状腺乳头状癌均无明确的因果关系。
结论T2DM与甲状腺乳头状癌之间存在因果关联,即T2DM会增加甲状腺乳头状癌发生的风险。T1DM、BMI与甲状腺乳头状癌均无明确的因果关系。
ObjectiveTo investigate the causal relationship between type 2 diabetes mellitus (T2DM), type 1 diabetes mellitus (T1DM), body mass index (BMI) and papillary thyroid cancer using Mendelian randomization(MR) study.
MethodsPublicly available genome-wide association studies (GWAS) were used as the data source to screen single nucleotide polymorphisms significantly associated with exposure factors (instrumental variables), and the inverse variance weighting (IVW), weighted median, MR-Egger analysis, simple mode, and weighted mode of two-sample MR were used to assess the causal association between T2DM, T1DM, BMI and papillary thyroid cancer. The reliability and stability of the results were assessed by heterogeneity analysis, multiple validity analysis and sensitivity analysis.
ResultsA total of 118 strong instrumental variables for T2DM, 76 for T1DM, and 486 for BMI were screened respectively to conduct two-sample MR analysis. Among the 5 MR analysis methods, the results of the IVW method showed that T2DM was significantly associated with papillary thyroid cancer (odds ratio ( OR)=1.147, 95% CI: 1.026-1.282; P=0.016), and the genetic effect values ( β values) of the other 4 analysis methods and IVW method were in the same direction; the results of heterogeneity analysis, multiplicity analysis and sensitivity analysis showed all P>0.05. T1DM (IVW method: OR=1.000, 95% CI: 0.952-1.051; P=0.994) and papillary thyroid cancer, BMI (IVW method: OR=1.214, 95% CI: 0.923-1.598; P=0.166) and papillary thyroid cancer were not clearly causally related.
ConclusionsThere is a causal association between T2DM and papillary thyroid cancer, and T2DM increases the risk of papillary thyroid cancer. There is no clear causal association between T1DM, BMI and papillary thyroid cancer.
王嘉文,林秋玉,姜楠,等. 2型糖尿病与甲状腺乳头状癌关系的两样本孟德尔随机化研究[J]. 中华核医学与分子影像杂志,2025,45(03):164-168.
DOI:10.3760/cma.j.cn321828-20240528-00180版权归中华医学会所有。
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王嘉文:研究实施,数据处理、论文撰写;林秋玉:研究指导、论文修改;姜楠、赵爽言、王宇鑫、郭莹:数据分析、图形建立;林承赫:研究指导、论文审阅

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