SERPINB5 and neoplasm: For TNM staging, a urinary maspin concentration value lower than 200 pg/mL suggest a pT value of 2 or 3, while a higher concentration of urinary maspin than 200 pg/mL suggest a pT = 4; for gross features, the salivary maspin concentration value higher than 200 pg/mL increase the probability of a vegetant tumor, while a salivary maspin concentration value lower than 200 pg/mL can exclude a mucinous compound.