RT Journal Article T1 Genomic Risk Score impact on susceptibility to systemic sclerosis. A1 Bossini-Castillo, Lara A1 Villanueva-Martin, Gonzalo A1 Kerick, Martin A1 Acosta-Herrera, Marialbert A1 López-Isac, Elena A1 Simeón, Carmen P A1 Ortego-Centeno, Norberto A1 Assassi, Shervin A1 International SSc Group, A1 Australian Scleroderma Interest Group (ASIG), A1 PRECISESADS Clinical Consortium, A1 PRECISESADS Flow Cytometry study group, A1 Hunzelmann, Nicolas A1 Gabrielli, Armando A1 de Vries-Bouwstra, J K A1 Allanore, Yannick A1 Fonseca, Carmen A1 Denton, Christopher P A1 Radstake, Timothy Rdj A1 Alarcón-Riquelme, Marta Eugenia A1 Beretta, Lorenzo A1 Mayes, Maureen D A1 Martin, Javier K1 autoimmune diseases K1 immune complex diseases K1 scleroderma K1 systemic AB Genomic Risk Scores (GRS) successfully demonstrated the ability of genetics to identify those individuals at high risk for complex traits including immune-mediated inflammatory diseases (IMIDs). We aimed to test the performance of GRS in the prediction of risk for systemic sclerosis (SSc) for the first time. Allelic effects were obtained from the largest SSc Genome-Wide Association Study (GWAS) to date (9 095 SSc and 17 584 healthy controls with European ancestry). The best-fitting GRS was identified under the additive model in an independent cohort that comprised 400 patients with SSc and 571 controls. Additionally, GRS for clinical subtypes (limited cutaneous SSc and diffuse cutaneous SSc) and serological subtypes (anti-topoisomerase positive (ATA+) and anti-centromere positive (ACA+)) were generated. We combined the estimated GRS with demographic and immunological parameters in a multivariate generalised linear model. The best-fitting SSc GRS included 33 single nucleotide polymorphisms (SNPs) and discriminated between patients with SSc and controls (area under the receiver operating characteristic (ROC) curve (AUC)=0.673). Moreover, the GRS differentiated between SSc and other IMIDs, such as rheumatoid arthritis and Sjögren's syndrome. Finally, the combination of GRS with age and immune cell counts significantly increased the performance of the model (AUC=0.787). While the SSc GRS was not able to discriminate between ATA+ and ACA+ patients (AUC GRS was successfully implemented in SSc. The model discriminated between patients with SSc and controls or other IMIDs, confirming the potential of GRS to support early and differential diagnosis for SSc. YR 2020 FD 2020-10-01 LK http://hdl.handle.net/10668/16358 UL http://hdl.handle.net/10668/16358 LA en DS RISalud RD Apr 7, 2025