NHERF1 and metastatic malignant neoplasm in the lymph nodes: In view of the small size of sample A, we also conducted semi‐quantitative assays of apical and total NHERF1 intensity by IHC in TMAs of sample B. We found a positive correlation between total and apical NHERF1 intensity (r = 0.504; p < 0.01), although apical NHERF1 scores had a stronger inverse relationship with lymph node metastases (p < 0.001; data not shown).