Identification of a Novel Biomarker for Biliary Tract Cancer Using Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry

Table 6

Positive or negative status of 4204 Da peptide, CEA, and CA19-9 in patients with biliary tract cancer.

CEA (≥5 ng/mL)	CA19-9 (≥37 U/mL)	4204 Da peptide (≥322 A.U.)	Number of patients
−	−	−	4
−	−	+	15
−	+	−	6
+	−	−	2
+	+	−	3
+	−	+	2
−	+	+	18
+	+	+	12