GSTP1 and psoriasis: A subsequent study used 2D electrophoresis combined with liquid chromatography tandem mass spectrometry (LC-MS/MS) to identify 36 proteins elevated 2-fold in psoriasis lesions (e.g., GSTP1, SFN, PRDX2), which were functionally related to diverse processes, such as apoptosis, defense response, inflammatory response, redox balance and cell proliferation [20].