Pooled genome wide association detects association upstream of FCRL3 with Graves' disease

Jwu Khong, Kathryn Burdon, Yi Lu, Kate Laurie, Lefta Leonardos, Paul Baird, Srujana Sahebjada, John Walsh, Adam Gajdatsy, Peter Ebeling, Peter Hamblin, Rosemary Wong, Simon Forehan, Anthony Roberts, Spiros Fourlanos, Matthew Doogue, Dinesh Selva, Grant Montgomery, Stuart Macgregor, Jamie Craig

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    Abstract

    Background: Graves' disease is an autoimmune thyroid disease of complex inheritance. Multiple genetic susceptibility loci are thought to be involved in Graves' disease and it is therefore likely that these can be identified by genome wide association studies. This study aimed to determine if a genome wide association study, using a pooling methodology, could detect genomic loci associated with Graves' disease. Results: Nineteen of the top ranking single nucleotide polymorphisms including HLA-DQA1 and C6orf10, were clustered within the Major Histo-compatibility Complex region on chromosome 6p21, with rs1613056 reaching genome wide significance (p=5×10-8). Technical validation of top ranking non-Major Histo-compatablity complex single nucleotide polymorphisms with individual genotyping in the discovery cohort revealed four single nucleotide polymorphisms with p≤10-4. Rs17676303 on chromosome 1q23.1, located upstream of FCRL3, showed evidence of association with Graves' disease across the discovery, replication and combined cohorts. A second single nucleotide polymorphism rs9644119 downstream of DPYSL2 showed some evidence of association supported by finding in the replication cohort that warrants further study. Conclusions: Pooled genome wide association study identified a genetic variant upstream of FCRL3 as a susceptibility locus for Graves' disease in addition to those identified in the Major Histo-compatibility Complex. A second locus downstream of DPYSL2 is potentially a novel genetic variant in Graves' disease that requires further confirmation.

    Original languageEnglish
    Article number939
    Number of pages10
    JournalBMC Genomics
    Volume17
    Issue number1
    DOIs
    Publication statusPublished - 2016

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    Khong, J., Burdon, K., Lu, Y., Laurie, K., Leonardos, L., Baird, P., Sahebjada, S., Walsh, J., Gajdatsy, A., Ebeling, P., Hamblin, P., Wong, R., Forehan, S., Roberts, A., Fourlanos, S., Doogue, M., Selva, D., Montgomery, G., Macgregor, S., & Craig, J. (2016). Pooled genome wide association detects association upstream of FCRL3 with Graves' disease. BMC Genomics, 17(1), [939]. https://doi.org/10.1186/s12864-016-3276-z