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Not yet recruitingNCT05218148Updated Apr 6, 2022

SOX Combined With Sintilimab and Trastuzumab Versus SOX Regimen in the Perioperative Treatment of HER2-positive Locally Advanced Gastric Adenocarcinoma

A Phase 2 interventional study of sintilimab and Trastuzumab in HER2-positive, Locally Advanced Solid Tumor and Immunotherapy, sponsored by Aiping Zhou. Not yet recruiting at 1 site in China. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2022-04-06.

Sponsored by Aiping Zhou · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Oct 2024, 2 years ago, but the record still lists the study as not yet recruiting.
Phase
Phase 2
Study type
Interventional
Enrollment
44
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

The SOX regimen has became the standard perioperative chemotherapy for locally advanced gastric cancer; The immune checkpoint inhibitors have become a standard treatment for advanced or metastatic gastric cancer;For HER2-positive locally advanced gastric cancer, some phase II studies have shown that chemotherapy combined with trastuzumab can further improve the pathological remission rate;This prospective phase II clinical trial was designed, using SOX combined with sintilimab and trastuzumab to treat HER2 positive locally advanced gastric or gastroesophageal junction adenocarcinoma patients.

Read the detailed description

This phase II trial is a single-arm and single-center clinical study. Neoadjuvant chemotherapy is a standard treatment for locally advanced gastric cancer. The SOX regimen has became the standard perioperative chemotherapy regimen for locally advanced gastric cancer. For HER2-positive locally advanced gastric cancer, the neoadjuvant treatment is still based on chemotherapy alone. Some phase II studies have shown that chemotherapy combined with trastuzumab can further improve the pathological response. But it has not yet become a standard treatment strategy.

In the field of gastric cancer, checkpoint inhibitors have become a standard treatment for advanced or metastatic gastric cancer. PD-1 monoclonal antibody (Sintilimab) + trastuzumab + chemotherapy (SOX regimen ) may be an ideal perioperative treatment for HER2-positive locally advanced gastric cancer.

02

Conditions studied

  • HER2-positive
  • Locally Advanced Solid Tumor
  • Immunotherapy
  • Sintilimab
  • S-1
  • Oxaliplatin
  • Gastric or Gastroesophageal Junction Adenocarcinoma

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03

In context

Adenocarcinoma

2,004 studies on the registry are indexed under Adenocarcinoma; 375 are open to participants now.

This study's planned enrollment of 44 is close to the median of 45 across 1,553 interventional studies indexed under Adenocarcinoma.

Browse Adenocarcinoma studies →

Lead sponsor

Aiping Zhou is the lead sponsor of 6 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Sign the informed consent form.
  • Locally advanced adenocarcinoma of the stomach or gastroesophageal junction (Siewert type II/III) confirmed by pathology or cytology.
  • The definition of a positive HER2 test result is as follows: IHC detects HER2 3+ or IHC detects HER2 2+ and FISH is positive.
  • Clinically, based on chest, abdomen and pelvic CT, gastroscopy, endoscopic ultrasonography, gastrointestinal contrast, ordinary ultrasound, or laparoscopy if possible, it is judged as T3-4a N+ or T4bN any gastric cancer or gastroesophageal junction cancer (refer to AJCC Article Version 8 in stages).
  • Patients have not received chemotherapy and/or immunotherapy and/or trastuzumab treatment and/or radiotherapy in the past.
  • Age 18-75 years old.
  • The Eastern Cooperative Oncology Group (ECOG) performance status score was 0 or 1, and there was no deterioration within 2 weeks before the first administration of the study drug.
  • Good organ function:

Blood routine: hemoglobin ≥90g/L, white blood cell ≥3.0×109/L, neutrophil ≥1.5×109/L, platelet ≥100×109/L; Renal function: creatinine≤1.5×upper limit of normal (UNL) or creatinine clearance ≥60ml/min; Liver function: total bilirubin (TBIL)≤1.5×upper limit of normal (UNL); ALT≤2.5×UNL, AST≤2.5×UNL.

Exclusion criteria

Exclusion Criteria:

  • The pathology is other types besides adenocarcinoma, such as squamous cell carcinoma, adenosquamous carcinoma, neuroendocrine carcinoma and so on.
  • Have received chemotherapy and/or radiotherapy in the past.
  • Have received any anti-PD-1, anti-PD-L1/L2 antibodies, anti-CTLA-4 antibodies and other immunotherapy in the past.
  • Have received any anti-HER2 therapy in the past.
  • Intra-abdominal dissemination or distant metastasis (M1).
  • Clinically significant ascites.
  • Known to have allergic reactions to oxaliplatin and any ingredients or excipients of Tiggio.
  • Known to have allergic reactions to any ingredients or excipients of Sintilimab and Trastuzumab.
  • Inability to swallow, intestinal obstruction, or other factors that affect the administration and absorption of the drug.
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Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
44 participants (estimated)

Study arms

  • Experimental
    Group A

    Group A: SOX regimen (oxaliplatin + Seggio) ) + sintilimab + trastuzumab; 3 cycles of treatment, followed by D2 radical resection, and 5 cycles of adjuvant chemotherapy with the original regimen after surgery

    Drug: sintilimab · Drug: Trastuzumab · Drug: S-1 plus oxaliplatin

  • Active comparator
    Group B

    Group B: SOX regimen, 3 cycles of treatment, followed by D2 radical resection, and 5 cycles of adjuvant chemotherapy with the original regimen after surgery

    Drug: S-1 plus oxaliplatin

Interventions

  • Drugsintilimab

    Sintilimab 200mg was administered as a 30-60 min intravenous (IV) infusion every 3 weeks.3 cycles before surgery and 5 cycles after surgery.

  • DrugTrastuzumab

    Trastuzumab was 8mg/kg for the first time, and 6mg/kg for the follow-up. 3 cycles before surgery and 5 cycles after surgery.

  • DrugS-1 plus oxaliplatin

    Oxaliplatin 130 mg/m2 was administered IV every 3 weeks. S-1 was given orally twice daily for the first 2 weeks of each 3-week cycle. The S-1 dose was 40 mg for body surface area (BSA) \< 1.25 m2, 50 mg for BSA 1.25 to \<1.5 m2 and 60 mg for BSA ≥1.5 m2. Body surface area \&lt;1.25m2: Tegio 40mg bid day 1 \~ 14; Body surface area 1.25 \~ \&lt;1.5m2: Tegio 50mg bid day 1 \~ 14; Body surface area ≥1.5m2: Tegio 60mg bid day 1 \~ 14; 3 cycles before surgery and 3 cycles after surgery.

06

What researchers measure

Primary outcomes

  1. Major pathological response rate (MPR)

    Proportion of subjects with residual tumor less than 10% or complete response

    Time frame: Up to 6 months

Secondary outcomes

  1. Pathological response rate (refer to Becker-TRG evaluation standard)

    TRG level 1-3: 1a: No tumor remains at all 1b: Less than 10% of the tumor remains 2: 10%-50% tumor residual 3: More than 50% of the tumor remains or there is no change in the tumor

    Time frame: Up to 3 years

  2. Objective response rate (ORR)

    Proportion of subjects with initial RECIST 1.1 measurable disease who have complete response (CR) or partial response (PR) according to iRECIST

    Time frame: Up to 3 years

  3. Disease-free survival (DFS)

    Time from Cycle 1 Day 1 treatment administration to the first documented event of: disease progression, disease recurrence following surgery (preferably biopsy proven), or death - whichever occurs first.

    Time frame: Up to 3 years

  4. Overall survival (OS)

    Time from Cycle 1 Day 1 treatment administration to death due to any cause.

    Time frame: Up to 3 years

  5. Incicende of Adverse Events (AEs)

    Number of patients with AE, treatment-related AE (TRAE), immune-related AEs (irAE), AE of special interest (AESI), serious adverse event (SAE) assessed by CTCAE v5.0.

    Time frame: Up to3 years

  6. Biomarker assessment

    To analyze the differences of gene and immune microenvironment biomarkers among patients with different curative effects, and further explore the relationship with the efficacy of clinical treatment. To analyze the correlation between peripheral blood indexes and the efficacy of clinical treatment.

    Time frame: Up to3 years

07

Study locations

1 site
  • Cancer Hospital & Institute, Chinese Academy of Medical Sciences
    Beijing, 100021, China
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 6, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05218148
Lead sponsor
Aiping Zhou
Responsible party
Aiping Zhou (Chief physician, Chinese Academy of Medical Sciences) — Sponsor-investigator
First posted
Feb 1, 2022
Start date
Apr 1, 2022 (estimated)
Primary completion
Oct 1, 2024 (estimated)
Completion
Dec 1, 2025 (estimated)
Last update
Apr 6, 2022

Study contacts

Aiping Zhou, doctor
Contact
zhouap1825@126.com
86 13691161998

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Mar 2022. You cannot join it, but the record below documents what was studied.

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