Decreased sigmoidal ABCB1 (P-glycoprotein) expression in ulcerative colitis is associated with disease activity.

Ufer M, Häsler R, Jacobs G, Haenisch S, Lächelt S, Faltraco F, Sina C, Rosenstiel P, Nikolaus S, Schreiber S, Cascorbi I (2009); Pharmacogenomics., 10(12):1941-53. doi: 10.2217/pgs.09.128