Association Between C-Reactive Protein and Risk of Amyotrophic Lateral Sclerosis: A Mendelian Randomization Study

Frontiers in Genetics

Xusheng Huang¹  Yahui Zhu¹  Jinghong Zhang¹  Mao Li¹ 

[1] Department of Neurology, The First Medical Center, Chinese PLA General Hospital, Beijing, China;Medical School of Chinese PLA, Beijing, China;

关键词: amyotrophic lateral sclerosis;    mendelian randomization;    C-reactive protein;    single-nucleotide polymorphisms;    causal relationship;   

DOI  :  10.3389/fgene.2022.919031

来源: DOAJ

【 摘 要 】

Background: Until now, the relationship between C-reactive protein (CRP) levels and amyotrophic lateral sclerosis (ALS) risk has not been fully established. It is necessary to assess whether there is a causal relationship between C-reactive protein levels and ALS risk.Objective and Methods: We aimed to determine whether CRP has causal effects on risk of ALS. In this present study, summary-level data for ALS (20,806 cases and 59,804 controls) was obtained from large analyses of genome-wide association studies. For instrumental variables, 37 single nucleotide polymorphisms that had been previously identified to be related to CRP levels were used, including 4 SNPs of conservative CRP genetic variants and 33 SNPs of liberal CRP genetic variants. MR estimates were calculated using the inverse-variance weighted method, supplemented by MR-Egger, weighted median, and MR-PRESSO methods.Results: There was no significant causal relationship between genetically predicted CRP levels and ALS risk (OR = 1.123, 95% CI = 0.963–1.309, p = 0.139) and results for the conservative CRP instruments were consistent (OR = 0.964, 95% CI = 0.830–1.119, p = 0.628). Pleiotropic bias was not observed in this study.Conclusions: This study suggests that genetically predicted CRP levels may not be a causal risk factor for ALS.

【 授权许可】

Unknown