Author(s)
Jun Li
Published 3 Projects
genomics Bioinformatics Expression Quantitative Trait Locus Causal Gene Genome Wide Association Study
Content
Video Abstract (AI generated) (01:57) Paper PreprintIsolating causal genes from enormous genome-wide association signals of complex phenotypes remains an open and challenging question. SMR (Summary-based Mendelian Randomization) is a widely used Mendelian randomization (MR) method for inferring causal genes by using a single expression quantitative trait locus (eQTL). In the present study, we explored more powerful MR methods based on multiple eQTLs. Among six representative multiple instrumental variable (IVs) based MR methods, original used in the epidemiological field, not all MR methods worked for the causal gene estimation. But we found the maximum-likelihood based MR method and weighted median-based MR method were preferable to the other four MR methods in terms of valid type 1 errors, acceptable statistical powers and robustness to linkage disequilibrium (LD) in eQTLs. Both of the MR methods were also much more powerful than the SMR. We recalibrated key parameters of the two MR methods in practices and developed a multiple IVs based MR analysis framework for causal gene estimation, named MACG and available at http://pmglab.top/kggsee. In the applications, MACG not only rediscovered many known causal genes of the schizophrenia and bipolar disorder, but also reported plenty of promising candidate causal genes. In conclusion, this study provided a powerful tool and encouraging exemplars of mining potential causal genes from huge amounts of GWAS signals with eQTLs. ### Competing Interest Statement The authors have declared no competing interest.
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Hailiang Huang. (2021, Oct 27).Systematic comparative analysis of Mendelian randomization methods for inferring causal genes of complex phenotypes and the application to psychiatric diseases[Video]. Scitok. https://scitok.com/project/p/b2833ac7
Jiang Lin. "Systematic comparative analysis of Mendelian randomization methods for inferring causal genes of complex phenotypes and the application to psychiatric diseases" Scitok, uploaded by Huang Hailiang, 27 Oct, 2021, https://scitok.com/project/pb2833ac7
Hailiang Huang. "Systematic comparative analysis of Mendelian randomization methods for inferring causal genes of complex phenotypes and the application to psychiatric diseases" Scitok. (Oct 27, 2021). https://scitok.com/project/p/b2833ac7
Hailiang Huang (Oct 27, 2021). Systematic comparative analysis of Mendelian randomization methods for inferring causal genes of complex phenotypes and the application to psychiatric diseases Scitok. https://scitok.com/project/p/b2833ac7
Hailiang Huang. Systematic comparative analysis of Mendelian randomization methods for inferring causal genes of complex phenotypes and the application to psychiatric diseases[video]. 2021 Oct 27. https://scitok.com/project/p/b2833ac7
@online{al2006link, title={ Systematic comparative analysis of Mendelian randomization methods for inferring causal genes of complex phenotypes and the application to psychiatric diseases }, author={ Huang, Hailiang }, organization={Scitok}, month={ Oct }, day={ 27 }, year={ 2021 }, url = {https://scitok.com/project/p/b2833ac7}, }