Efficacy of Sintilimab Combined With Bevacizumab and XELOX/SOX in Initially Unresectable AFP-positive Gastric/Gastroesophageal Junction Adenocarcinoma

Официальное название

Conversion Therapy of Sintilimab Combined With Bevacizumab and XELOX/SOX for Initially Unresectable AFP-positive Gastric/Esophagogastric Junction Adenocarcinoma : A Multi-center, Single-arm, Phase II Trial (SOLIDS-02)

Обзор

Alpha-fetoprotein-producing gastric cancer (AFP-positive gastric cancer, AFP-GC), a rare and highly aggressive subtype of gastric cancer, accounts for 1.3% to 15% of all gastric cancer cases. Its clinical features are significantly different from those of common gastric cancer. Not only does it show abnormally elevated serum AFP levels, but it also has a stronger angiogenic ability, a higher rate of distant metastasis, and a poorer prognosis even after a upfront R0 surgery, making it a challenging problem in the field of gastric cancer treatment. Notably, patients with AFP-positive gastric cancer have a relatively low sensitivity to the traditional standard regimens. There is an urgent need to explore targeted treatment strategies to break through the efficacy bottleneck. Combination of sintilimab, bevacizumab and XELOX/SOX for initially unresectable AFP-positive gastric/esophagogastric junction adenocarcinoma could be a novel therapeutic strategy to increase response rate and therapeutic efficacy. This study is a multi-center, single-arm phase 2 clinical trial to evaluate efficacy, tolerability and safety of perioperative sintilimab in combination with bevacizumab and XELOX/SOX in initially unresectable AFP-positive gastric/esophagogastric junction adenocarcinoma.

Вмешательства

• Препарат Sintilimab
  Sintilimab, recombinant humanized anti-PD-1 monoclonal antibody for injection; 200mg iv drip，d1, q3w
• Препарат Bevacizumab
  7.5mg/kg，iv drip，d1, q3w
• Препарат Oxaliplatin
  130mg/m2，iv drip for 2h，d1, q3w
• Препарат Capecitabine
  1000mg/m2 twice daily, d1-14, q3w
• Препарат S-1
  40\~60mg Bid，d1\~14, q3w

Первичные конечные точки

• Objective response rate(ORR) [Срок оценки: From first dose to end of study treatment or last tumor assessment prior to conversion surgery or disease progression.Up to 24 weeks.]

Вторичные конечные точки (4)

• R0 resection rate [Срок оценки: From the initiation date of first cycle (each cycle is 21 days) to the date of operation.Up to 24 weeks.]
• Major pathological response rate [Срок оценки: From the initiation date of first cycle (each cycle is 21 days) to the date of operation.Up to 24 weeks.]
• One year progression-free survival (PFS) [Срок оценки: From the initiation date of first cycle (each cycle is 21 days) to the date of first documented progression or date of death from any cause, whichever came first, assessed up to 1 year.]
• One year overall survival(OS) [Срок оценки: The Kaplan-Meier survival from the initiation date of first cycle until death from any cause or the last follow-up date,assessed up to 1 year.]

Критерии участия

Критерии включения

• Signed informed consent;
• Patients age 18-75 years;
• Histologically CT/MRI confirmed cT3-4N+M0/1 gastric or GEJ adenocarcinoma; (M1 only includes type I liver metastasis of gastric cancer, according to the "Chinese Expert Consensus on Liver Metastasis of Gastric Cancer");
• Serum AFP levels > 2× upper limit of normal or AFP-positive by IHC staining;
• Adequate organ function
• ECOG 0-1, no surgery contraindications;
• Expected survival ≥3 months;

Критерии исключения

• HER2-positive status: IHC 3+, or IHC 2+/FISH+
• Prior chemotherapy, radiotherapy, anti-PD-1/PD-L1 therapy, surgery for gastric cancer;
• Signs of other distant metastases (e.g., peritoneal, lung, bone, supraclavicular lymph, etc.)
• Significant cardiovascular disease

--Current treatment with anti-viral therapy or HBV

• Pregnancy or breastfeeding
• History of malignancy within 5 years prior to screening
• Present or history of any autoimmune disease or immune deficiency;
• There are active gastric and duodenal ulcers, ulcerative colitis and other gastrointestinal diseases, or active bleeding in unresectable tumors.

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Распределение

Не применимо

Модель

Одна группа

Маскирование

Открытое

Основная цель

Лечение

Центры проведения

Список центров уточняется — проверьте первичный протокол.

Идентификаторы

NCT: NCT07515625 · SOLIDS study-02 · Shanghai Cancer Center

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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