MARCKS and metastatic malignant neoplasm in the lymph nodes: To ascertain whether phospho-MARCKS is associated with invasive/metastatic potential of breast cancer, we then validated the phospho-MARCKS signal abundance in another cohort of patients (n = 50) with various types of breast tumors, including primary and lymph node metastatic tumors (Figure 1B, left and Supplementary Table S1).