SMAD3 gene variant is a risk factor for recurrent surgery in patients with Crohn's disease. Fowler SA, Ananthakrishnan AN, Gardet A, et al. SMAD3 gene variant is a risk factor for recurrent surgery in patients with Crohn’s disease. J Crohns Colitis. 2014;8(8):845-51. doi:10.1016/j.crohns.2014.01.003 Read more