GSTP1 and neoplasm: Increased levels of GSH are significantly correlated with platinum resistance in several tumor models; increased levels of many of the enzymes, including GCLC, GSTA1, and GSTP1, are associated with platinum resistance in cell lines; and correlations between platinum resistance and elevated levels of GSTP1 were found in cancer patient samples, which correlated with poor survival (Supplementary Table S1).