Neoadjuvant Apatinib Combined With Sintilimab and Perioperative SOX Versus Neoadjuvant Sintilimab Combined With Perioperative SOX for Intestinal Type of Locally Advanced Gastric/Gastroesophageal Junction Adenocarcinoma

NCT ID: NCT06925243

Last Updated: 2025-04-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

682 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-04-15

Study Completion Date

2030-12-31

Brief Summary

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This study aims to compare the efficacy and safety of neoadjuvant apatinib combined with sintilimab and perioperative SOX chemotherapy versus neoadjuvant sintilimab combined with perioperative SOX chemotherapy in locally advanced intestinal-type gastric cancer/gastroesophageal junction adenocarcinoma. The primary questions include:

1. Whether the complete remission rate (pCR) of the apatinib combined with sintilimab and SOX regimen is higher than that of the sintilimab combined with SOX regimen.
2. The safety of the apatinib combined with sintilimab and SOX regimen.

Participants will be divided into:

1. Experimental Group: Participants will receive an intravenous injection of sintilimab (200 mg) combined with the SOX regimen (oxaliplatin 130 mg/m² and S-1, with the initial dose determined based on body surface area). Additionally, apatinib (250 mg) will be administered orally once daily during the first three neoadjuvant cycles.
2. Control Group: Participants will receive treatment with the sintilimab combined with the SOX regimen.

This treatment will be administered for three to four cycles prior to surgery, followed by radical surgery, including D2 or D2+ lymph node dissection. Surgery is scheduled four weeks after the last neoadjuvant therapy (NAT) cycle. Within 3 to 6 weeks post-surgery, patients will begin adjuvant SOX chemotherapy. Postoperative patients will receive four cycles of adjuvant SOX chemotherapy, administered every three weeks.

Detailed Description

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Conditions

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Gastric Cancer (Including Stomach and Gastroesophageal Junction [GEJ]) Neoadjuvant Therapy Adjuvant Chemotherapy pCR Rate MPR ORR,OS,PFS

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Neoadjuvant apatinib combined with sintilimab and perioperative SOX group

Participants will receive an intravenous injection of sintilimab (200 mg) combined with the SOX regimen (oxaliplatin 130 mg/m² and S-1, with the initial dose determined based on body surface area). Additionally, apatinib (250 mg) will be administered orally once daily during the first three neoadjuvant cycles. This treatment will be administered for three to four cycles prior to surgery, followed by radical surgery, including D2 or D2+ lymph node dissection. Within 3 to 6 weeks post-surgery, patients will begin adjuvant SOX chemotherapy. Postoperative patients will receive four cycles of adjuvant SOX chemotherapy, administered every three weeks.

Group Type EXPERIMENTAL

Neoadjuvant apatinib combined with sintilimab and perioperative SOX

Intervention Type DRUG

Sintilimab: 200mg, iv, day 1 Oxaliplatin: 130 mg/m², iv, day 1 S-1: 40-60 mg/m², po, day 1-14 (BSA \< 1.25 m², 40 mg bid, 1.25 m² ≤ BSA \< 1.5 m², 50 mg bid, BSA ≥ 1.5 m², 60 mg bid) Apatinib: 250mg, po, day1-21, for 3 cycles preoperatively

Neoadjuvant sintilimab combined with perioperative SOX group

Participants will receive an intravenous injection of sintilimab (200 mg) combined with the SOX regimen (oxaliplatin 130 mg/m² and S-1, with the initial dose determined based on body surface area). This treatment will be administered for three to four cycles prior to surgery, followed by radical surgery, including D2 or D2+ lymph node dissection. Within 3 to 6 weeks post-surgery, patients will begin adjuvant SOX chemotherapy. Postoperative patients will receive four cycles of adjuvant SOX chemotherapy, administered every three weeks.

Group Type ACTIVE_COMPARATOR

Neoadjuvant sintilimab combined with perioperative SOX

Intervention Type DRUG

Sintilimab: 200mg, iv, day 1 Oxaliplatin: 130 mg/m², iv, day 1 S-1: 40-60 mg/m², po, day 1-14 (BSA \< 1.25 m², 40 mg bid, 1.25 m² ≤ BSA \< 1.5 m², 50 mg bid, BSA ≥ 1.5 m², 60 mg bid)

Interventions

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Neoadjuvant apatinib combined with sintilimab and perioperative SOX

Sintilimab: 200mg, iv, day 1 Oxaliplatin: 130 mg/m², iv, day 1 S-1: 40-60 mg/m², po, day 1-14 (BSA \< 1.25 m², 40 mg bid, 1.25 m² ≤ BSA \< 1.5 m², 50 mg bid, BSA ≥ 1.5 m², 60 mg bid) Apatinib: 250mg, po, day1-21, for 3 cycles preoperatively

Intervention Type DRUG

Neoadjuvant sintilimab combined with perioperative SOX

Sintilimab: 200mg, iv, day 1 Oxaliplatin: 130 mg/m², iv, day 1 S-1: 40-60 mg/m², po, day 1-14 (BSA \< 1.25 m², 40 mg bid, 1.25 m² ≤ BSA \< 1.5 m², 50 mg bid, BSA ≥ 1.5 m², 60 mg bid)

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Type of Participant and Disease Characteristics

1. Patients must have a pathologically confirmed diagnosis of HER-2 negative tumor and intestinal type gastric or gastroesophageal junction adenocarcinoma according to Lauren's histological subtypes.
2. Patients must have previously untreated locally advanced gastric or gastroesophageal junction adenocarcinoma (stage cT2 to cT4), with lymph nodes ranging from N0 to N3 and no evidence of metastatic disease (M0).
3. Patients with Siewert type 2 or 3 tumors are eligible. Enrollment of participants with Siewert type 1 tumors will be limited to those for whom the planned treatment is perioperative chemotherapy and resection.
2. Demographics

1. Male or female subjects must be between the ages of ≥ 18 and ≤ 75 years at the time of signing the informed consent.
2. Expected Survival: The expected survival time must be ≥ 12 weeks.
3. Performance Status: Subjects must have an ECOG performance status of 0 or 1.
4. Male Contraception: Non-sterilized male subjects who are sexually active with a female partner of childbearing potential must use an effective method of contraception from Day 1 through 120 days after receipt of the final dose of the investigational product. It is strongly recommended for the female partner of a male subject to also use an effective method of contraception throughout this period.
5. Female subjects of childbearing potential must be willing to use adequate contraception methods throughout the study and for 120 days after the last dose of the study drug. The decision to discontinue contraception after this time point should be discussed with the attending physician. Periodic abstinence, contraceptive rhythm methods, and withdrawal are not acceptable forms of contraception.

* Females of childbearing potential are defined as those who are not surgically sterile (e.g., bilateral tubal ligation, bilateral oophorectomy, or complete hysterectomy) or postmenopausal (defined as 12 months with no menses without an alternative medical cause).
* Highly effective contraception methods, resulting in a low failure rate (i.e., less than 1% per year) when used consistently and correctly, are required. Acceptable methods include a combination of a hormonal method (e.g., contraceptive pill) and a barrier method (e.g., male condom plus spermicide) to prevent pregnancy.
* Barrier methods include male condom plus spermicide, copper T intrauterine device, and levonorgestrel-releasing intrauterine system.

ii.Hormonal methods include implants, hormone injection, combined pill, minipill, and patch.
* If a female subject becomes pregnant or suspects pregnancy during her participation in the study or her partner's participation, she must promptly inform her treating physician.
3. Organ Function

1. Blood Routine (no blood transfusion within 14 days): WBC ≥ 3.0 × 10\^9/L; ANC ≥ 1.5 × 10\^9/L; PLT ≥ 100 × 10\^9/L; HGB ≥ 80 g/L.
2. Hepatic Function: Total bilirubin (TBIL) ≤ 1.5 × ULN, or direct bilirubin ≤ ULN for those with total bilirubin levels 1.5 × ULN and ALT/AST levels ≤ 2.5 × ULN.
3. Renal Function: Creatinine (Cr) ≤ 1.5 × ULN or Creatinine Clearance (CrCl) ≥ 60 mL/min for those with Cr \> 1.5 × ULN.
4. Coagulation Function: INR ≤ 1.5 × ULN, APTT ≤ 1.5 × ULN.
5. Cardiac Function: Cardiac function will be assessed using electrocardiogram and color Doppler ultrasound, and subjects must have had no myocardial infarction within the last six months. Hypertension and other coronary heart diseases must be controllable.

* Females of childbearing potential are defined as those who are not surgically sterile (e.g., bilateral tubal ligation, bilateral oophorectomy, or complete hysterectomy) or postmenopausal (defined as 12 months with no menses without an alternative medical cause).
* Highly effective contraception methods, resulting in a low failure rate (i.e., less than 1% per year) when used consistently and correctly, are required. Acceptable methods include a combination of a hormonal method (e.g., contraceptive pill) and a barrier method (e.g., male condom plus spermicide) to prevent pregnancy.
* Barrier methods include male condom plus spermicide, copper T intrauterine device, and levonorgestrel-releasing intrauterine system.

iv.Hormonal methods include implants, hormone injection, combined pill, minipill, and patch.
* If a female subject becomes pregnant or suspects pregnancy during her participation in the study or her partner's participation, she must promptly inform her treating physician.
4. Informed Consent All subjects must provide written informed consent to participate in the study.
5. Other Inclusions

1. Prior Treatment: Patients must not have previously received any anti-tumor treatments, including radiotherapy, chemotherapy, targeted therapy, or immunotherapy.
2. Plan to proceed to surgery following pre-operative chemotherapy based on standard staging studies per local practice.

Be willing to provide tissue and blood sample from a tumor lesion at baseline and at time of surgery

Exclusion Criteria

1. Medical Conditions

1. Has a history of (non-infectious) pneumonitis that required steroids or has current pneumonitis.
2. Has a known additional malignancy that is progressing or has required active treatment within the past 5 years (except for cutaneous basal cell carcinoma, cutaneous squamous cell carcinoma, or carcinoma in situ that has undergone potentially curative therapy).
3. Has an active infection requiring systemic therapy.
4. Has an active autoimmune disease that has required systemic treatment in the past 2 years. (NOTE: Subjects with vitiligo, alopecia, Grave's disease, Type I diabetes mellitus, hypothyroidism (e.g., following Hashimoto's syndrome) only requiring hormone replacement on a stable dose (without adjustment in the first 4 weeks of study treatment), psoriasis or eczema not requiring systemic treatment (within the past 2 years), or conditions not expected to recur in the absence of an external trigger are not excluded.)
5. Has any complications requiring systemic treatment with corticosteroids such as prednisone (\> 10mg/day) or other immunosuppressive medications within 14 days prior to the first administration. Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is allowed.
6. History of primary immunodeficiency.
7. Has received a live vaccine or other immune-activating anti-tumor drugs (such as interferon, interleukin, thymosin, or immunotherapy) within 30 days prior to the first dose of study treatment.
8. Has a known history of active tuberculosis.
9. Known history of allogeneic organ transplantation and allogeneic hematopoietic stem cell transplantation.
10. Has a known severe allergy or hypersensitivity to sintilimab or apatinib or any of the study chemotherapy agents and/or to any of their excipients.
11. Presence of any of the following cardiovascular and cerebrovascular diseases or cardiovascular and cerebrovascular risk factors:

* Grade II or higher myocardial ischemia or myocardial infarction, poorly controlled arrhythmia (including QTc interval ≥ 480 ms), grade III or IV cardiac insufficiency, or left ventricular ejection fraction (LVEF) \< 50.0% as determined by ultrasonic cardiography.
* Cerebrovascular accident, transient ischemic attack, or other arteriovenous thrombotic, embolic, or ischemic events.
2. Prior/Concomitant Therapy

1. Subjects who have already enrolled in another clinical study, unless it is an observational, non-interventional clinical study, or they are in the follow-up period for an interventional study.
2. Subjects who have received any systemic or curative anti-tumor therapy, including radiotherapy, chemotherapy, targeted therapy.
3. Subjects who have previously received any anti-PD-1, anti-PD-L1 antibody, or any other antibody or drug therapy targeting T-cell co-stimulation or checkpoint pathway, e.g. ICOS or agonists (e.g., CD40, CD137, GITR, and OX40, etc.).

1. Confirmed HER-2 positive tumor will be excluded.
2. Patients could not provide tumor samples and blood samples.
3. Pregnant or lactating patients, as well as patients with childbearing potential who plan to be pregnant within 5 months after the study; Women of childbearing should receive a blood pregnancy test within 7 days before the study.
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Zuoyi Jiao

OTHER

Sponsor Role lead

Responsible Party

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Zuoyi Jiao

Medical Professor

Responsibility Role SPONSOR_INVESTIGATOR

Locations

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First Hospital of Lanzhou University

Lanzhou, Gansu, China

Site Status RECRUITING

Gansu Provincial Hospital

Lanzhou, Gansu, China

Site Status RECRUITING

Lanzhou University Second Hospital

Lanzhou, Gansu, China

Site Status RECRUITING

The Gastrointestinal Surgery Department, Sun Yat-sen University Cancer Center Gansu Hospital

Lanzhou, Gansu, China

Site Status RECRUITING

Countries

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China

Central Contacts

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Bo Long

Role: CONTACT

+86 130 0878 1208

Facility Contacts

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Da Zhao

Role: primary

+86-13893230123

Xiaoning Zhao

Role: primary

+86-18993113172

Bo Long

Role: primary

+86 130 0878 1208

Dengwen Wei

Role: primary

+86-13919916710

Other Identifiers

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LanzhouU2H-2025A-120

Identifier Type: -

Identifier Source: org_study_id

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