RT Journal Article SR Electronic T1 Polygenic and multifactorial scores for pancreatic ductal adenocarcinoma risk prediction JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 369 OP 377 DO 10.1136/jmedgenet-2020-106961 VO 58 IS 6 A1 Alice Alessandra Galeotti A1 Manuel Gentiluomo A1 Cosmeri Rizzato A1 Ofure Obazee A1 John P Neoptolemos A1 Claudio Pasquali A1 Michael Nentwich A1 Giulia Martina Cavestro A1 Raffaele Pezzilli A1 William Greenhalf A1 Bernd Holleczek A1 Cornelia Schroeder A1 Ben Schöttker A1 Audrius Ivanauskas A1 Laura Ginocchi A1 Timothy J Key A1 Péter Hegyi A1 Livia Archibugi A1 Erika Darvasi A1 Daniela Basso A1 Cosimo Sperti A1 Maarten F Bijlsma A1 Orazio Palmieri A1 Viktor Hlavac A1 Renata Talar-Wojnarowska A1 Beatrice Mohelnikova-Duchonova A1 Thilo Hackert A1 Yogesh Vashist A1 Ondrej Strouhal A1 Hanneke van Laarhoven A1 Francesca Tavano A1 Martin Lovecek A1 Christos Dervenis A1 Ferenc Izbéki A1 Andrea Padoan A1 Ewa Małecka-Panas A1 Evaristo Maiello A1 Giuseppe Vanella A1 Gabriele Capurso A1 Jakob R Izbicki A1 George E Theodoropoulos A1 Krzysztof Jamroziak A1 Verena Katzke A1 Rudolf Kaaks A1 Andrea Mambrini A1 Ioannis S Papanikolaou A1 Richárd Szmola A1 Andrea Szentesi A1 Juozas Kupcinskas A1 Simona Bursi A1 Eithne Costello A1 Ugo Boggi A1 Anna Caterina Milanetto A1 Stefano Landi A1 Maria Gazouli A1 Ludmila Vodickova A1 Pavel Soucek A1 Domenica Gioffreda A1 Federica Gemignani A1 Hermann Brenner A1 Oliver Strobel A1 Markus Büchler A1 Pavel Vodicka A1 Salvatore Paiella A1 Federico Canzian A1 Daniele Campa YR 2021 UL http://jmg.bmj.com/content/58/6/369.abstract AB Background Most cases of pancreatic ductal adenocarcinoma (PDAC) are asymptomatic in early stages, and the disease is typically diagnosed in advanced phases, resulting in very high mortality. Tools to identify individuals at high risk of developing PDAC would be useful to improve chances of early detection.Objective We generated a polygenic risk score (PRS) for PDAC risk prediction, combining the effect of known risk SNPs, and carried out an exploratory analysis of a multifactorial score.Methods We tested the associations of the individual known risk SNPs on up to 2851 PDAC cases and 4810 controls of European origin from the PANcreatic Disease ReseArch (PANDoRA) consortium. Thirty risk SNPs were included in a PRS, which was computed on the subset of subjects that had 100% call rate, consisting of 839 cases and 2040 controls in PANDoRA and 6420 cases and 4889 controls from the previously published Pancreatic Cancer Cohort Consortium I–III and Pancreatic Cancer Case-Control Consortium genome-wide association studies. Additional exploratory multifactorial scores were constructed by complementing the genetic score with smoking and diabetes.Results The scores were associated with increased PDAC risk and reached high statistical significance (OR=2.70, 95% CI 1.99 to 3.68, p=2.54×10−10 highest vs lowest quintile of the weighted PRS, and OR=14.37, 95% CI 5.57 to 37.09, p=3.64×10−8, highest vs lowest quintile of the weighted multifactorial score).Conclusion We found a highly significant association between a PRS and PDAC risk, which explains more than individual SNPs and is a step forward in the direction of the construction of a tool for risk stratification in the population.Data are available upon reasonable request. Data may be obtained from a third party and are not publicly available. The data supporting the findings of this study are available upon reasonable request from the corresponding author. The data are not publicly available due to privacy or ethical restrictions. Sharing data will be conditional to approval by the PANDoRA steering committee and, if needed, to additional approval of the competent Institutional Review Boards.