Oct 25, 2018

Identification of new therapeutic targets for osteoarthritis through genome-wide analyses of UK Biobank

BioRxiv : the Preprint Server for Biology
Ioanna TachmazidouEleftheria Zeggini

Abstract

Osteoarthritis is the most common musculoskeletal disease and the leading cause of disability globally. Here, we perform the largest genome-wide association study for osteoarthritis to date (77,052 cases and 378,169 controls), analysing 4 phenotypes: knee osteoarthritis, hip osteoarthritis, knee and/or hip osteoarthritis, and any osteoarthritis. We discover 64 signals, 52 of them novel, more than doubling the number of established disease loci. Six signals fine map to a single variant. We identify putative effector genes by integrating eQTL colocalization, fine-mapping, human rare disease, animal model, and osteoarthritis tissue expression data. We find enrichment for genes underlying monogenic forms of bone development diseases, and for the collagen formation and extracellular matrix organisation biological pathways. Ten of the likely effector genes, including TGFB1, FGF18, CTSK and IL11 have therapeutics approved or in clinical trials, with mechanisms of action supportive of evaluation for efficacy in osteoarthritis.

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Mentioned in this Paper

Bone Development
Genome-Wide Association Study
Bone Diseases, Developmental
Biochemical Pathway
CTSK protein, human
Immune Effector Cell
Degenerative Polyarthritis
Genes
Extracellular Matrix
Extracellular Matrix Organization

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