Neoadjuvant Adebrelimab + DOS in Locally Advanced Resectable Gastric Cancer

NCT06475417 | Recruiting Phase 2 DMC

• 1 other identifier: 202404-05
• Study Type: interventional
• Target: 42
• Locations: 1 country
• Sites: 1

Brief Summary

To evaluate the efficacy and safety of adebrelimab combined DOS in neoadjuvant treatment of locally advanced resectable gastric cancer.

Conditions

Gastric Cancer

Keywords

Gastric Cancer; Resectable; Neoadjuvant; ICIs

Outcome Measures

Primary Outcomes (1)

• Pathological complete response rate（pCR）

  Pathological complete response rate according to Becker standard

  7 days after surgery

Secondary Outcomes (7)

• Major pathologic response (MPR)

  7 days after surgery

• Disease-free survival（DFS）

  Long term follow-up will continue until the death of the subject or the end of the study, at least three years

• R0 resection rate

  postoperative 6 hours

• Overall Survival（OS）

  Long term follow-up will continue until the death of the subject or the end of the study, at least three years

• Objective response rate（ORR）

  7 days before surgery

Study Arms (1)

Adebrelimab combined with DOS

EXPERIMENTAL

After signing the informed consent, they are screened to meet the inclusion criteria. After receiving the standard dose of adebrelimab combined with DOS regimen for 3 courses of treatment before surgery, and within 3-6 weeks after the completion of the third administration, preoperative imaging examination is used to evaluate the efficacy of new adjuvant treatment and the possibility of radical D2 resection, The patient underwent radical surgical treatment for gastric cancer and observed pCR.

Drug: Adebrelimab combined with DOS

Interventions

Adebrelimab combined with DOS DRUG

After signing the informed consent, they are screened to meet the inclusion criteria. After receiving the standard dose of adebrelimab combined with DOS regimen for 3 courses of treatment before surgery, and within 3-6 weeks after the completion of the third administration, preoperative imaging examination is used to evaluate the efficacy of new adjuvant treatment and the possibility of radical D2 resection, The patient underwent radical surgical treatment for gastric cancer and observed pCR

Adebrelimab combined with DOS

Eligibility Criteria

• Age: 18 Years - 75 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Participants will be recruited voluntarily and will provide informed consent before enrollment. They are expected to demonstrate good compliance and willingness to adhere to the study protocol, including attending follow-up visits as required.
• ）Age between 18 and 75 years, with no gender restrictions. 2）Histopathological confirmation of locally advanced gastric or gastroesophageal junction adenocarcinoma obtained through gastric endoscopic biopsy.
• ）Clinical staging consistent with T2-3N+M0 or T4aNanyM0, confirmed by imaging (CT/MRI) and endoscopic ultrasound.
• ）Eastern Cooperative Oncology Group (ECOG) performance status of 0-1. 5）Expected survival of at least 12 weeks. 3.Prior to treatment initiation, participants must meet the following criteria related to vital organ function within the preceding 7 days:
• Hematological parameters: Hemoglobin (Hb) ≥ 90 g/L, Absolute neutrophil count (ANC) ≥ 1.5 × 10\^9/L, Platelets (PLT) ≥ 80 × 10\^9/L (no recent blood transfusions within 14 days).
• Biochemical parameters: Total bilirubin (TBIL) ≤ 1.5 × upper limit of normal (ULN), Alanine aminotransferase (ALT) and Aspartate aminotransferase (AST) ≤ 2.5 × ULN, Serum creatinine (Cr) ≤ 1.5 × ULN or Creatinine clearance rate (CCr) ≥ 60 ml/min.
• Doppler ultrasound assessment: Left ventricular ejection fraction (LVEF) ≥ lower limit of normal (50%).
• Female participants of childbearing potential must agree to use effective contraception during the study and for 6 months after the end of the study period. They must provide negative serum or urine pregnancy tests within 7 days before enrollment and must not be lactating. Male participants must also agree to use effective contraception during the study and for 6 months following its conclusion.
• All participants must provide voluntary informed consent before participation in the study.

You may not qualify if:

• History of malignancies within the past 5 years, excluding cured cervical carcinoma in situ, non-melanoma skin cancer, and superficial bladder tumors.
• Patients with tumors invading adjacent organs (e.g., aorta or trachea), posing a high risk of bleeding or fistula formation.
• Subjects requiring systemic treatment with corticosteroids (\>10 mg prednisone or equivalent daily) or other immunosuppressive agents within 14 days prior to study treatment initiation, except for those with no active autoimmune disease who may receive inhaled or topical corticosteroids at doses equivalent to \>10 mg prednisone daily or adrenal replacement steroid doses.
• Patients with significant malnutrition requiring intravenous nutrition or continuous infusion therapy requiring hospitalization. Patients with well-controlled nutrition for ≥28 days before randomization may be included.
• Participants receiving live vaccines/attenuated vaccines within 30 days after the first treatment.
• Unresolved toxicities of grade ≥4 as per CTCAE 4.02 due to previous treatments, excluding alopecia and ≤grade 2 neuropathy caused by oxaliplatin.
• Allergic reactions or contraindications to any study drug components.
• Patients with severe and/or uncontrolled diseases, including hypertension, myocardial ischemia or infarction, arrhythmias, congestive heart failure, severe or uncontrolled diseases or active infections, renal failure, immunodeficiency diseases, poorly controlled blood glucose, seizures, history of interstitial lung disease, pulmonary fibrosis, or any condition interfering with the detection and management of suspected drug-related toxicities.
• Patients with current gastrointestinal diseases such as intestinal obstruction or those at risk of gastrointestinal bleeding, perforation, or obstruction.
• Patients who have undergone surgical treatment, incisional biopsy, or significant traumatic injury within 28 days prior to enrollment.
• Patients with any bleeding events of grade ≥3 per CTCAE within 4 weeks before enrollment, or those with unhealed wounds, ulcers, or fractures.
• Participants with thrombotic events (arterial or venous) within 3 months, such as cerebrovascular accidents, deep vein thrombosis, or pulmonary embolism.
• Subjects planning to undergo or who have previously undergone allogeneic organ or bone marrow transplantation, including liver transplantation.

Sponsors & Collaborators

• Tang-Du Hospital: lead
• Jiangsu Hengrui Pharmaceutical Co., Ltd.: collaborator

Study Sites (1)

Tangdu Hospital Affiliated to the Fourth Military Medical University

Xi'an, Shannxi, 710038, China

RECRUITING

MeSH Terms

Conditions

Stomach Neoplasms

Condition Hierarchy (Ancestors)

Gastrointestinal Neoplasms; Digestive System Neoplasms; Neoplasms by Site; Neoplasms; Digestive System Diseases; Gastrointestinal Diseases; Stomach Diseases

Central Study Contacts

Nan Wang, Dr

CONTACT

15719286297; wangnandoc@163.com

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 28, 2024
• First Posted: June 26, 2024
• Study Start: May 24, 2024
• Primary Completion: May 20, 2025
• Study Completion: April 26, 2026
• Last Updated: June 26, 2024

Record last verified: 2024-06

Data Sharing

• IPD Sharing: Will not share

Locations

CN (1)