SLC2A4 and cancer: In contrast, PPP2R2A was the most deleted gene found in > 20% of samples across 17 cancers, followed by the deletion of SLC2A4 in 16 cancers and five additional genes (FOXO3, PPP2CB, PPP2R2D, PPP2R5C and PPP2R5E) in 15 cancer types (Fig. 1; Additional file 3).