ArticleFrontiers in immunology2025
Fruquintinib and sintilimab plus SOX as perioperative therapy for locally resectable advanced gastric/gastroesophageal junction adenocarcinoma: study protocol for a prospective, single-arm, phase II clinical trial.
Article in Frontiers in immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Synergizing radiotherapy and immunotherapy for locally advanced gastric cancer: evolving paradigms and future directions.Frontiers in immunology · 2026Review
- Impact of total gastrectomy plus perioperative PD-1 inhibitors on survival in locally advanced gastric cancer.Frontiers in oncology · 2026Article
- Immune checkpoint inhibitor therapy for gastric cancer: current status, therapeutic challenges, and future prospects.Frontiers in immunology · 2026Review
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6 authors.
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Abstract
Background: Locally advanced gastric/gastroesophageal junction (G/GEJ) adenocarcinoma faces high recurrence risks despite radical surgery. Perioperative chemotherapy (e.g., FLOT regimen) improves survival but has limited pathological complete response (pCR) rates and significant toxicity. Immunotherapy and anti-angiogenic agents show promise in advanced G/GEJ cancer. This trial evaluates fruquintinib (a VEGFR-1/2/3 inhibitor), sintilimab (PD-1 inhibitor), and SOX (oxaliplatin+S-1) as perioperative therapy for resectable locally advanced G/GEJ adenocarcinoma. Methods: This prospective, single-arm, phase II trial (N = 25) enrolls treatment-naïve adults (18-75 years) with histologically confirmed, resectable cT3-4aN+M0 G/GEJ adenocarcinoma (AJCC 8th edition). Patients receive 3 cycles of neoadjuvant therapy:Fruquintinib:4 mg orally, days 1-14 (21-day cycle). S-1: 80-120 mg orally twice daily (based on BSA), days 1-14. Oxaliplatin: 130 mg/m² IV, day 1. Sintilimab: 200 mg IV, day 1.Radical gastrectomy with D2 lymphadenectomy follows 4-6 weeks post-neoadjuvant therapy. Adjuvant therapy (3 cycles of sintilimab for pCR patients; 3 cycles of preoperative regimen for non-pCR) starts 4-6 weeks post-surgery. Endpoints: Primary: pCR rate (ypT0/Tis ypN0 per CAP criteria). Secondary: R0 resection rate, major pathological response (MPR, ≤10% residual tumor), 2-year event-free survival (EFS), 2-year overall survival (OS), safety (NCI CTCAE v5.0). Exploratory: Biomarker analysis of tumor microenvironment. Statistical Analysis: Sample size (25 patients) was calculated using Fisher's exact test (one-sided α = 0.05, power = 80%), assuming pCR improvement from 5% (historical control) to 20%. Efficacy analyses use intention-to-treat (ITT) population; safety analyses include patients receiving ≥1 neoadjuvant dose. Discussion: This is the first trial combining fruquintinib, sintilimab, and SOX in perioperative G/GEJ cancer. If successful, it may expand treatment options for locally advanced disease. Limitations include single-arm design and small sample size. Trial Registration: Chinese Clinical Trial Registry (ChiCTR2400084194).
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