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OncoMatch/Clinical Trials/NCT06576921

Efficacy and Safety of Serplulimab Combined With Chemotherapy as Neoadjuvant Treatment for Locally Advanced Gastric Cancer or Adenocarcinoma of Esophagogastric Junction

Is NCT06576921 recruiting? Yes, currently enrolling (May 2026). This Phase 2 trial studies Serplulimab Combined With Chemotherapy for stomach neoplasms.

Phase 2RecruitingXijing HospitalNCT06576921Data as of May 2026

Treatment: Serplulimab Combined With ChemotherapyThis is a multicenter, double-blind, randomized, phase 2 trial to investigate the efficacy and safety of serlulimab combined with nab-paclitaxel plus SOX versus nab-paclitaxel plus SOX alone as neoadjuvant treatment for locally advanced GC or AEG. The goal of this clinical trial is to learn if serlulimab combined with nab-paclitaxel plus SOX as neoadjuvant treatment for locally advanced AEG/GC. It will also learn about the safety of serlulimab combined with nab-paclitaxel plus SOX. The main questions it aims to answer are: Does serlulimab increase the pCR of participants with locally advanced AEG/GC ? What medical problems do participants have when taking serlulimab? Researchers will compare to a placebo (a look-alike substance that contains no drug) to see if serlulimab combined with nab-paclitaxel plus SOX as neoadjuvant treatment for locally advanced AEG/GC. Participants will: Eligible patients were randomly assigned to receive serlulimab (4.5 mg intravenously on day 1) combined with chemotherapy (nap-paclitaxel 260 mg/m2 intravenously on days 1, OXA 130mg/ /m2, intravenously on days 1, and S-1 40 to 60 mg orally twice daily depending on BSA on days 1 to 14) or chemotherapy alone every 3 weeks for 3 preoperative cycles followed by 3 postoperative cycles. All patients will be followed for survival.

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Extracted eligibility criteria

Cancer type

Gastric Cancer

Biomarker criteria

Excluded: HER2 (ERBB2) overexpression or amplification

Positive Her-2 detection (IHC3+ or IHC2+ amplified by FISH detection)

Disease stage

Required: Stage T4N+M0

Clinical stage T3/T4N+M0 disease as assessed by CT/MRI, PET-CT, and laparoscopy, if feasible

Performance status

ECOG 0–1(Restricted strenuous activity)

Prior therapy

No prior treatment (treatment-naive required)
Max 0 prior lines

Cannot have received: chemotherapy

Cannot have received: radiotherapy

Cannot have received: hormone therapy

Cannot have received: targeted therapy

Cannot have received: immunotherapy

Lab requirements

Blood counts

white blood cell count ≥3.5 ×10^9/L, neutrophils ≥1.5 × 10^9/L, platelet count >100 × 10^9/L, and hemoglobin ≥90 g/L

Kidney function

serum creatinine (Cr) ≤1.5×ULN or creatinine clearance (Ccr) ≥60mL/min

Liver function

ALT and AST ≤2.5×ULN; total bilirubin (TBIL) ≤1.5×ULN (Gilbert syndrome patients, ≤3×ULN)

Acceptable bone marrow, hepatic, and renal function, including: ... see full text

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