GPX3 and metastatic malignant neoplasm in the lymph nodes: In BRCA, we used univariate analysis to find that risk factors for OS included higher GPX3 expression (p = 0.0170; HR = 1.410), M1 stage (p = 0.009; HR = 1.681), N1-3 stage (p < 0.001; HR = 2.285), T4 stage (p < 0.001; HR = 3.220), and lymph node metastasis (p < 0.001; HR = 2.208).