Development of a biomarker-guided chemotherapy response model using combined CEA and CA19-9 profiles in esophageal cancer: A real-world pharmacotherapeutic study.
BACKGROUND Esophageal adenocarcinoma is associated with poor survival despite advances in systemic therapy. Readily available serum biomarkers may improve risk stratification; however, their combined role in biomarker-guided treatment decisions remains insufficiently investigated. OBJECTIVES To evaluate the prognosti...