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Identification of a missense variant in SPDL1 associated with idiopathic pulmonary fibrosis

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posted on 2021-03-05, 09:11 authored by Ryan Dhindsa, Johan Mattsson, Abhishek Nag, Quanli Wang, Louise Wain, Richard Allen, Eleanor Wigmore, Kristina Ibanez, Dimitrios Vitsios, Sri VV Deevi, Sebastian Wasilewski, Maria Karlsson, Glenda Lassi, Henric Olsson, Daniel Muthas, Alex Mackay, Lynne Murray, Simon Young, Carolina Haefliger, Toby Maher, Maria Belvisi, Gisli Jenkins, Philip Molyneaux, Adam Platt, Slavé Petrovski, FinnGen Consortium
Idiopathic pulmonary fibrosis (IPF) is a fatal disorder characterised by progressive, destructive lung scarring. Despite significant progress, the genetic determinants of this disease remain incompletely defined. Using next generation sequencing data from 752 individuals with sporadic IPF and 119,055 controls, we performed both variant- and gene-level analyses to identify novel IPF genetic risk factors. Our variant-level analysis revealed a novel rare missense variant in SPDL1 (NM_017785.5 p.Arg20Gln; p = 2.4 × 10 −7 , odds ratio = 2.87). This signal was independently replicated in the FinnGen cohort (combined p = 2.2 × 10 −20 ), firmly associating this variant as a novel IPF risk allele. SPDL1 encodes Spindly, a protein involved in mitotic checkpoint signalling during cell division that has not been previously described in fibrosis. Our results highlight a novel mechanism underlying IPF, providing the potential for new therapeutic discoveries in a disease of great unmet need.

History

Author affiliation

Department of Health Sciences, University of Leicester

Version

  • AM (Accepted Manuscript)

Published in

Communications Biology

Publisher

Nature Research (part of Springer Nature)

issn

2399-3642

Acceptance date

2021-02-07

Copyright date

2021

Available date

2021-06-29

Language

en

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