Blood test may spare gastric cancer patients from unnecessary chemo

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Be able to provide a written informed consent form (ICF), and understand, agree to, and comply with the study requirements and assessment schedule. 2. Male or female aged 18 to 79 years. 3. Histologically confirmed gastric adenocarcinoma or adenocarcinoma of the gastroesophageal junction (GEJ), with clinical TNM staging (per the 8th edition of the AJCC/UICC Clinical TNM Staging for Gastric Cancer) as clinical Stage cIII to cIVa, and the primary gastric cancer lesion assessed to be amenable to curative resection. 4. ECOG PS ≤ 2, tolerable to surgical treatment, no surgical contraindications. 5. Females of childbearing potential must have a negative pregnancy test within 7 days prior to initiating neoadjuvant treatment. Males of reproductive potential and females of childbearing potential must agree to use adequate contraceptive measures during the study and for 24 months after the last dose of study medication. 6. Prior to neoadjuvant treatment, complete blood count (CBC) and biochemical tests must meet the following criteria: a) Absolute Neutrophil Count (ANC) ≥ 1.5 × 10⁹/L; b) Platelet Count (PLT) ≥ 75 × 10⁹/L; c) Hemoglobin (Hb) ≥ 80 g/L; d) Aspartate Aminotransferase (AST) and Alanine Aminotransferase (ALT) ≤ 2.5 × Upper Limit of Normal (ULN); e) Serum Creatinine (Cr) ≤ 1.5 × ULN, or Estimated Glomerular Filtration Rate (eGFR) ≥ 60 mL/min/1.73m²; f) Serum Albumin (ALB) ≥ 30 g/L; g) For subjects not receiving anticoagulant therapy: International Normalized Ratio (INR) or Prothrombin Time (PT) ≤ 1.5 × ULN, and Activated Partial Thromboplastin Time (APTT) ≤ 1.5 × ULN; for subjects receiving anticoagulant therapy: PT value must be within the expected therapeutic range for the anticoagulant used. 7. No antitumor treatment for the tumor involved in the current study has been administered prior to the initiation of neoadjuvant treatment. Exclusion Criteria: 1. Subjects for whom investigators consider that there are obvious contraindications to (neo)adjuvant treatment or who cannot tolerate (neo)adjuvant treatment. 2. Females of childbearing potential who have not undergone surgical sterilization or do not use adequate contraceptive measures, pregnant or lactating females, and males who plan to impregnate their partners in the near term. 3. Any severe or uncontrolled systemic disease, including but not limited to uncontrolled hypertension, active bleeding, diabetes mellitus, and others. 4. Severe chronic or active infections that require systemic antibacterial, antifungal, or antiviral therapy, including but not limited to tuberculosis (TB), human immunodeficiency virus (HIV) infection, and others. 5. History of previous malignant tumors or other malignant tumors currently present, except for basal cell or squamous cell skin cancer, superficial bladder cancer, prostatic/cervical/breast carcinoma in situ, and other such tumors that have been completely resected with no recurrence for at least 5 years. 6. Other circumstances that investigators deem inappropriate for study participation.