by Roblin, X. et al.
Department of Gastroenterology, CHU Grenoble, Grenoble, France
Department of Gastroenterology, CHU Grenoble, Grenoble, France
A 6-TGN level of >400 pmol/8 x 10(8) erythrocytes in IBD patients with normal TPMT activity and steroid-dependent or active disease despite an optimal AZA regimen may predict refractoriness to this drug.
Am. J. Gastroenterol. 2008; 12:3115-22