Table 2.

Proteins specifically present in preterm birth.

Extra cellular matrix and cell structure	CLSTN1 (calsyntenin 1), DSP (desmoplakin), FN1 (fibronectin 1), IGFBP-1 (insulin-like-growth-factor-binding protein 1), LAMA3 (laminin alpha 3), LUM (lumican), and THSD1 (thrombospondin 1)
Protease	CTSL2 (cathepsin L2), CST (cystatin), PAI-1 (plasminogen activator inhibitor-1), TIMP1 (tissue inhibitor of metalloproteinase 1), uPA (urokinase plasminogen activator), F2 (prothrombin fragment 2), and SLPI (secretory leukocyte peptidase inhibitor)
Innate immunity	defensin-1, defensin-2, S100A8 (Calgranulin A), S100A9 (Calgranulin B), and S100A12 (Calgranulin C)
Transporter	Transthyretin (TTR)