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Fine-mapping genomic loci refines bipolar disorder risk genes.

medRxiv : the preprint server for health sciences

Authors: Maria Koromina, Ashvin Ravi, Georgia Panagiotaropoulou, Brian M Schilder, Jack Humphrey, Alice Braun, Tim Bidgeli, Chris Chatzinakos, Brandon Coombes, Jaeyoung Kim, Xiaoxi Liu, Chikashi Terao, Kevin S O 'Connell, Mark Adams, Rolf Adolfsson, Martin Alda, Lars Alfredsson, Till F M Andlauer, Ole A Andreassen, Anastasia Antoniou, Bernhard T Baune, Susanne Bengesser, Joanna Biernacka, Michael Boehnke, Rosa Bosch, Murray Cairns, Vaughan J Carr, Miquel Casas, Stanley Catts, Sven Cichon, Aiden Corvin, Nicholas Craddock, Konstantinos Dafnas, Nina Dalkner, Udo Dannlowski, Franziska Degenhardt, Arianna Di Florio, Dimitris Dikeos, Frederike Tabea Fellendorf, Panagiotis Ferentinos, Andreas J Forstner, Liz Forty, Mark Frye, Janice M Fullerton, Micha Gawlik, Ian R Gizer, Katherine Gordon-Smith, Melissa J Green, Maria Grigoroiu-Serbanescu, José Guzman-Parra, Tim Hahn, Frans Henskens, Jan Hillert, Assen V Jablensky, Lisa Jones, Ian Jones, Lina Jonsson, John R Kelsoe, Tilo Kircher, George Kirov, Sarah Kittel-Schneider, Manolis Kogevinas, Mikael Landén, Marion Leboyer, Melanie Lenger, Jolanta Lissowska, Christine Lochner, Carmel Loughland, Donald MacIntyre, Nicholas G Martin, Eirini Maratou, Carol A Mathews, Fermin Mayoral, Susan L McElroy, Nathaniel W McGregor, Andrew McIntosh, Andrew McQuillin, Patricia Michie, Vihra Milanova, Philip B Mitchell, Paraskevi Moutsatsou, Bryan Mowry, Bertram Müller-Myhsok, Richard Myers, Igor Nenadić, Markus M Nöthen, Claire O'Donovan, Michael O'Donovan, Roel A Ophoff, Michael J Owen, Chris Pantelis, Carlos Pato, Michele T Pato, George P Patrinos, Joanna M Pawlak, Roy H Perlis, Evgenia Porichi, Danielle Posthuma, Josep Antoni Ramos-Quiroga, Andreas Reif, Eva Z Reininghaus, Marta Ribasés, Marcella Rietschel, Ulrich Schall, Thomas G Schulze, Laura Scott, Rodney J Scott, Alessandro Serretti, Cynthia Shannon Weickert, Jordan W Smoller, Maria Soler Artigas, Dan J Stein, Fabian Streit, Claudio Toma, Paul Tooney, Eduard Vieta, John B Vincent, Irwin D Waldman, Thomas Weickert, Stephanie H Witt, Kyung Sue Hong, Masashi Ikeda, Nakao Iwata, Beata Świątkowska, Hong-Hee Won, Howard J Edenberg, Stephan Ripke, Towfique Raj, Jonathan R I Coleman, Niamh Mullins

Bipolar disorder (BD) is a heritable mental illness with complex etiology. While the largest published genome-wide association study identified 64 BD risk loci, the causal SNPs and genes within these loci remain unknown. We applied a suite of statistical and functional fine-mapping methods to these loci, and prioritized 22 likely causal SNPs for BD. We mapped these SNPs to genes, and investigated their likely functional consequences by integrating variant annotations, brain cell-type epigenomic annotations, brain quantitative trait loci, and results from rare variant exome sequencing in BD. Convergent lines of evidence supported the roles of , and in BD. These represent promising candidates for functional experiments to understand biological mechanisms and therapeutic potential. Additionally, we demonstrated that fine-mapping effect sizes can improve performance and transferability of BD polygenic risk scores across ancestrally diverse populations, and present a high-throughput fine-mapping pipeline (https://github.com/mkoromina/SAFFARI).

PMID: 38405768

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