Humphrey Lab

Genetics of Neurodegeneration

Prioritizing Parkinson’s disease genes using population-scale transcriptomic data


Journal article


Yang I. Li, G. Wong, J. Humphrey, T. Raj
Nature Communications, 2017

Semantic Scholar DOI PubMedCentral PubMed
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APA   Click to copy
Li, Y. I., Wong, G., Humphrey, J., & Raj, T. (2017). Prioritizing Parkinson’s disease genes using population-scale transcriptomic data. Nature Communications.


Chicago/Turabian   Click to copy
Li, Yang I., G. Wong, J. Humphrey, and T. Raj. “Prioritizing Parkinson’s Disease Genes Using Population-Scale Transcriptomic Data.” Nature Communications (2017).


MLA   Click to copy
Li, Yang I., et al. “Prioritizing Parkinson’s Disease Genes Using Population-Scale Transcriptomic Data.” Nature Communications, 2017.


BibTeX   Click to copy

@article{yang2017a,
  title = {Prioritizing Parkinson’s disease genes using population-scale transcriptomic data},
  year = {2017},
  journal = {Nature Communications},
  author = {Li, Yang I. and Wong, G. and Humphrey, J. and Raj, T.}
}

Abstract

Genome-wide association studies (GWAS) have identified over 41 susceptibility loci associated with Parkinson’s Disease (PD) but identifying putative causal genes and the underlying mechanisms remains challenging. Here, we leverage large-scale transcriptomic datasets to prioritize genes that are likely to affect PD by using a transcriptome-wide association study (TWAS) approach. Using this approach, we identify 66 gene associations whose predicted expression or splicing levels in dorsolateral prefrontal cortex (DLFPC) and peripheral monocytes are significantly associated with PD risk. We uncover many novel genes associated with PD but also novel mechanisms for known associations such as MAPT, for which we find that variation in exon 3 splicing explains the common genetic association. Genes identified in our analyses belong to the same or related pathways including lysosomal and innate immune function. Overall, our study provides a strong foundation for further mechanistic studies that will elucidate the molecular drivers of PD. GWAS have identified over 41 susceptibility loci for Parkinson’s disease (PD). Here, the authors integrate PD GWAS summary statistics with transcriptome data from monocytes and DLFPC tissue in a TWAS approach and find 66 significant associations with PD risk highlighting lysosomal and innate immune functions.


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