MRP2 (ABCC2) was overexpressed (1.5-fold) in the tumours of patients who did not respond (P < 0.0001 Bonferroni post-test following Two-Way ANOVA; Two-way ANOVA Factors: Tumour response, P = 0.0025; Gene, P < 0.0001; Interaction, P = 0014) (Fig. 1). This evidence concerns the gene ABCC2 and neoplasm.