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Table 4 Proteins chosen by BMA of linear models

From: Do serum biomarkers really measure breast cancer?

Protein

Biological Role

Higher Prevalence In

Normal vs. Cancer

  

MIF (macrophage migration inhibitory factor)

Inflammation, regulates macrophage function in host defense through the suppression of anti-inflammatory effects of glucocorticoids [64–66]

Cancer

MMP-9 (matrix metalloproteinase)

Breakdown and remodeling of extracellular matrix [67], regulates growth plate angiogenesis and apoptosis of hypertrophic chondrocytes [68]

Cancer

MPO (myeloperoxidase)

Inflammation, produces HOCl, modulates vascular signaling and vasodilatory functions of nitric oxide (NO) during acute inflammation [69]

Normal

sVCAM-1 (soluble vascular cell adhesion molecule 1)

Mediates leukocyte-endothelial cell adhesion and signal transduction, membrane-bound adhesion molecules and the process of vascular inflammation of the vessel wall [70]

Normal

ACTH (adrenocorticotropic hormone)

Stimulates secretion of adrenal corticosteroids [71]

Cancer

Normal vs. Benign

  

MIF (macrophage migration inhibitory factor)

Inflammation, regulates macrophage function in host defense through the suppression of anti-inflammatory effects of glucocorticoids [64–66]

Benign

MICA (MHC class I polypeptide-related sequence A)

Stress-induced antigen that is broadly recognized by intestinal epithelial gamma delta T cells, ligands for natural killer cells [72]

Benign

IL-5 (Interleukin 5)

Stimulates B cell growth, increases immunoglobulin secretion, mediates eosinophil activation [73]

Normal

IL-12 p40 (Interleukin 12, p40 chain)

Differentiation of naive T cells into Th1 cells, stimulates the growth and function of T cells, stimulates the production of interferon-gamma (IFN-γ) and [74, 75](TNF-α) from T and natural killer cells, and reduces IL-4 mediated suppression of IFN-γ [76]

Normal

MCP-1 (Monocyte chemotactic protein-1)

Induces recruitment of monocytes, T lymphocytes, eosinophils, and basophils and is responsible for many inflammatory reactions to disease [77]

Benign

Benign vs. Cancer

  

CA-125 (cancer antigen 125)

Marker for ovarian cancer [12, 81, 82]

Cancer

IFNa (Interferon type I)

Secreted by leukocytes, fibroblasts, or lymphoblasts in response to viruses [78] or interferon inducers; implicated in autoimmune diseases [79, 80]

Benign

MICA (MHC class I polypeptide-related sequence A)

Stress-induced antigen that is broadly recognized by intestinal epithelial gamma delta T cells, ligands for natural killer cells [72]

Benign