Breast cancer is the second leading cause of cancer deaths and is the most common cancer among women. Although a number of biomarkers are being used in clinical practice, significant number cases for breast cancers are detected late and difficult to treat. Therefore, new biomarkers are in need to improve diagnosis and the therapeutics for breast cancer. The emergence of proteomics technologies has facilitated researcher comprehensive differential expression analyses of proteins in healthy and cancer individuals. The most commonly used proteomic techniques in breast cancer research are...