DDIT4 and breast cancer: When the pooled dataset was stratified according to the molecular subtype of breast cancer, the logrank test indicated that DDIT4 expression over the median was significantly related with a poor prognosis in Luminal A (P = 0.03) (Fig. 2C); Luminal B (P = 0.01) (Fig. 2D) and in the Basal subtype (P = 3.8 × 10−7) (Fig. 2E).