Abstract
Most transcriptome-wide association studies (TWASs) so far focus on European ancestry and lack diversity. To overcome this limitation, we aggregated genome-wide association study (GWAS) summary statistics, whole-genome sequences and expression quantitative trait locus (eQTL) data from diverse ancestries. We developed a new approach, TESLA (multi-ancestry integrative study using an optimal linear combination of association statistics), to integrate an eQTL dataset with a multi-ancestry GWAS. By exploiting shared phenotypic effects between ancestries and accommodating potential effect heterogeneities, TESLA improves power over other TWAS methods. When applied to tobacco use phenotypes, TESLA identified 273 new genes, up to 55% more compared with alternative TWAS methods. These hits and subsequent fine mapping using TESLA point to target genes with biological relevance. In silico drug-repurposing analyses highlight several drugs with known efficacy, including dextromethorphan and galantamine, and new drugs such as muscle relaxants that may be repurposed for treating nicotine addiction.
Original language | English (US) |
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Pages (from-to) | 291-300 |
Number of pages | 10 |
Journal | Nature Genetics |
Volume | 55 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2023 |
Bibliographical note
Funding Information:Methodology development and meta-analyses were supported by the National Institutes of Health (NIH) grants (nos. R01HG008983 to D.J.L., R56HG011035 to D.J.L., B.J. and S.V., R01HG011035 to F.C., D.J.L., S.V. and X.W., R56HG012358 to D.J.L., R01GM126479 to D.J.L., R21AI160138 to D.J.L. and R03OD032630 to D.J.L. and B.J.). D.J.L. and X.W. and were in part supported by the Penn State College of Medicine’s Biomedical Informatics and Artificial Intelligence Program in the Strategic Plan. The views expressed in this manuscript are those of the authors and do not necessarily represent the views of the National Heart, Lung, and Blood Institute, the NIH or the US Department of Health and Human Services. Funding acknowledgement for participating cohorts is in Supplementary Text.
Funding Information:
Methodology development and meta-analyses were supported by the National Institutes of Health (NIH) grants (nos. R01HG008983 to D.J.L., R56HG011035 to D.J.L., B.J. and S.V., R01HG011035 to F.C., D.J.L., S.V. and X.W., R56HG012358 to D.J.L., R01GM126479 to D.J.L., R21AI160138 to D.J.L. and R03OD032630 to D.J.L. and B.J.). D.J.L. and X.W. and were in part supported by the Penn State College of Medicine’s Biomedical Informatics and Artificial Intelligence Program in the Strategic Plan. The views expressed in this manuscript are those of the authors and do not necessarily represent the views of the National Heart, Lung, and Blood Institute, the NIH or the US Department of Health and Human Services. Funding acknowledgement for participating cohorts is in .
Publisher Copyright:
© 2023, The Author(s).