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Boxplot showing the composite genetic risk of CD by CD disease behaviour, the range of the composite genetic risk of Crohn’s disease for patients with UC and CD. Patients with CD are stratified by CD disease behaviour. Montreal refers to the Montreal classification.15 Montreal B1: non-stricturing, non-penetrating Crohn’s disease; B2: fibrostenotic Crohn’s disease; B3: penetrating Crohn’s disease. CD, Crohn’s disease; UC, ulcerative colitis.
