PSPH and metastatic malignant neoplasm in the lymph nodes: In addition, lymph-node metastasis (hazard ratio: 2.799, 95% CI: 1.119–7.002, p = 0.028), tumoral PHGDH negativity (hazard ratio: 3.624, 95% CI: 1.500–8.757, p = 0.004), tumoral PSPH positivity (hazard ratio: 3.880, 95% CI: 1.495–10.07, p = 0.005), and stromal SHMT1 negativity (hazard ratio: 2.605, 95% CI: 1.024–6.626, p = 0.044) correlated with short OS in TNBC subtype.