“…The detection of proteomic biomarkers can be achieved through either tissue biopsy or liquid biopsy, with the latter offering advantages in terms of minimally invasive and convenient sampling [ 13 , 14 ]. Plasma proteins were the most common biomarkers of liquid biopsy and a series of differential plasma protein profiles related to chemotherapy effectiveness were performed in ovarian cancer [ 15 ], esophageal cancer [ 16 ], and locally advanced nasopharyngeal carcinoma [ 17 ]. However, a comprehensive screening of plasma proteins associated with NACT in AGC has not been systematically conducted.…”