吉林大学学报(医学版) ›› 2025, Vol. 51 ›› Issue (2): 479-485.doi: 10.13481/j.1671-587X.20250222

• 临床研究 • 上一篇    

胰岛素样生长因子1与结直肠癌因果关系的两样本孟德尔随机化研究

穆华夏1,卜伟晓1,丁淑婷1,高梦瑶1,苏维强1,张震1,薄其付2,刘峰2,石福艳1,王清华1,孔雨佳1(),王素珍1()   

  1. 1.山东第二医科大学公共卫生学院卫生统计学教研室,山东 潍坊 261053
    2.山东第二医科大学附属医院肿瘤科,山东 潍坊 261041
  • 收稿日期:2024-05-30 接受日期:2024-07-11 出版日期:2025-03-28 发布日期:2025-04-22
  • 通讯作者: 孔雨佳,王素珍 E-mail:yujia_kyj80@163.com;wangsz@wfmc.edu.cn
  • 作者简介:穆华夏(1995-),女,安徽省淮南市人,在读硕士研究生,主要从事流行病与卫生统计学方面的研究。
  • 基金资助:
    国家自然科学基金青年项目(82003560);山东省科技厅自然科学基金面上项目(ZR2020MH340);陕西省科技厅科技计划项目(2024SF-YBXM-256);山东省教育厅大学生创新创业基金项目(S202410438047);山东第二医科大学大学生创新创业基金项目(X2024374)

Two sample Mendelian randomization study on causal relationship between insulin-like growth factor-1 and colorectal cancer

Huaxia MU1,Weixiao BU1,Shuting DING1,Mengyao GAO1,Weiqiang SU1,Zhen ZHANG1,Qifu BO2,Feng LIU2,Fuyan SHI1,Qinghua WANG1,Yujia KONG1(),Suzhen WANG1()   

  1. 1.Department of Health Statistics,School of Public Health,Shandong Second Medical University,Weifang 261053,China
    2.Department of Oncology,Affiliated Hospital,Shandong Second Medical University,Weifang 261041,China
  • Received:2024-05-30 Accepted:2024-07-11 Online:2025-03-28 Published:2025-04-22
  • Contact: Yujia KONG,Suzhen WANG E-mail:yujia_kyj80@163.com;wangsz@wfmc.edu.cn

摘要:

目的 基于双向两样本孟德尔随机化(MR)分析,探索胰岛素样生长因子1(IGF-1)与结直肠癌(CRC)之间的因果关联。 方法 基于已公开的全基因组关联研究(IEU OpenGWAS)项目的公开汇总数据进行双向两样本MR分析,采用逆方差加权法(IVW)作为主要分析方法,采用加权中位数法(WM)、MR-Egger回归法、加权众数法(WME)和简单众数法(SM)进行辅助分析,以评估IGF-1对CRC的因果影响;通过敏感性分析检查结果的稳健性。 结果 以IGF-1作为暴露因素共筛选到386个单核苷酸多态性(SNPs)作为工具变量(IVs)。MR分析,IGF-1与CRC之间存在正向因果关联,比值比(OR)为1.178,95%置信区间(CI)为1.092~1.272,P<0.001;且该因果关联在校正了身高后仍然存在[OR(95%CI)=1.214(1.111,1.327),P<0.001]。Cochran’s Q检验显示IV之间存在异质性(P<0.05),MR-Egger回归法未发现IV的水平多效性(P>0.05)。留一法逐个剔除SNPs后,结果显示该因果关联稳健。反向MR分析显示IGF-1与CRC之间不存在反向因果关系[OR(95%CI)=1.017(0.997,1.037),P=0.103]。 结论 IGF-1水平与CRC之间存在因果关联,高IGF-1水平是CRC的潜在风险因素。

关键词: 胰岛素样生长因子1, 结直肠癌, 孟德尔随机化, 身高, 单核苷酸多态性

Abstract:

Objective To explore the causal association between insulin-like growth factor-1(IGF-1) and colorectal cancer(CRC) based on two sample Mendelian randomization(MR) analysis. Methods A bidirectional two sample MR analysis was conducted based on publicly aggregated data from the IEU OpenGWAS project. The inverse variance weighted(IVW) method was used as the main analysis model to assess the causal relationship between IGF-1 and CRC. Additional analyses were performed using weighted median (WM), MR-Egger regression, weighted mode estimator (WME), and simple mode (SM) methods. Sensitivity analysis was performed to assess the robustness of the results. Results A total of 386 single nucleotide polymorphisms(SNPs)were selected as instrumental variables (IVs) with IGF-1 as the exposure factor. The MR analysis results revealed a positive causal association between IGF-1 and the risk of CRC [odds ratio (OR)=1.178, 95% confidence interval (CI): 1.092-1.272)](P<0.001), and the association remained significant after adjusting for height [OR(95%CI)=1.214(1.111, 1.327)](P<0.001). Cochran’s Q-test showed heterogeneity among the IVs(P<0.05), while the horizontal pleiotropy of IV was not detected by the MR-Egger regression(P>0.05). The leave-one-out analysis showed that the MR results were robust. Reverse MR analysis indicated no reverse causal relationship between IGF-1 and CRC [OR(95%CI):1.017(0.997, 1.037)](P=0.103). Conclusion There is a causal relationship between IGF-1 level and CRC, and elevated IGF-1 level could be a risk factor for CRC.

Key words: Insulin-like growth factor-1, Colorectal cancer, Mendelian randomization, Height, Single nucleotide polymorphism

中图分类号: 

  • R735.3