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Sintilimab Combined With Chemotherapy as Adjuvant Treatment for Phase III GC and GEJ

A Phase II Study of Sintilimab Combined With Chemotherapy as Postoperative Adjuvant Treatment for Phase III Gastric Adenocarcinoma (GC) and The Adenocarcinoma of Esophagogastric Junction (GEJ)

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06761846
Enrollment
70
Registered
2025-01-07
Start date
2025-01-17
Completion date
2028-12-31
Last updated
2026-04-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Esophagogastric Junction Adenocarcinoma, Gastric Adenocarcinoma

Brief summary

This study is a prospective, single-arm, phase II clinical study. Screening patients with stage III GC/GEJ adenocarcinoma after D2 or broader radical resection. After enrolling in the study, the subjects receive Sintilimab combined with oxaliplatin+Tegafur, Gimeracil and Oteracil Potassium Capsules (SOX) or oxaliplatin+Capecitabine (XELOX) , in which the combined chemotherapy is up to 8 cycles, and the total course of treatment was 16 cycles. The following-up of subjects includes adverse events、disease status、living conditions and the quality of life.

Detailed description

This study is a prospective, single-arm, phase II clinical study. Screening patients with stage III GC/GEJ adenocarcinoma after D2 or broader radical resection that meets the criteria for group entry and does not meet the exclusion criteria. After signing the informed consent, the subjects entered the trial group to receive adjuvant treatment with Sintilimab combined with chemotherapy (SOX or XELOX ), in which SOX or XELOX chemotherapy was up to 8 cycles, and the total course of treatment was 16 cycles. The efficacy is evaluated every 4 cycles during the study treatment. The frequency of follow-up after treatment is defined as: once every 3 months within 2 years after surgery, every 6 months for 2 to 5 years, and once a year after 5 years. The follow-up interval can be adjusted according to the clinical need. Safety follow-up is from the beginning of the first treatment to 30 days after the last medication.

Interventions

chemotherapy includes SOX and XELOX

Sponsors

Cancer Institute and Hospital, Chinese Academy of Medical Sciences
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Age ≥18. 2. Patients with histopathological confirmed gastric/GEJ adenocarcinoma. 3. The pTNM is confirmed between IIIA-IIIC and the PD-L1 CPS\>=1. 4. Patients treated with D2 surgery. 5. ECOG is 0 or 1. 6. Patients who could tolerate chemotherapy combined with immunotherapy. 7. Patients who are not pregnant and have no willing to get pregnant within 6 months after the treatment is over. 8. Patients who are willing to offer their postoperative tumor tissue and their peripheral blood samples. 9. Patients who are volunteer to sign the ICF.

Exclusion criteria

1. Patients who had received neoadjuvent treatments before surgery. 2. Patients who have discovered tumor relapse or metastasis before adjuvent treatment. 3. Patients who have other malignant tumors. 4. Patients who could not swallow the tablets and capsules. 5. Other conditions which the researchers think are not suitable for participate the study.

Design outcomes

Primary

MeasureTime frameDescription
3-year disease free survival(DFS) rateFrom the time of first dose of adjuvant treatment to the 3 years of the same dayThe disease free survival rate of 3 years after receiving the first dose of treatment

Secondary

MeasureTime frameDescription
DFSFrom the time of first dose of adjuvant treatment to the time when the subjects have confirmed disease progressdisease free survival
overall survival (OS)From the time of first dose of adjuvant treatment to the time when the subjects have died for all causesoverall survival
safetycollect all adverse events since the last medication up to 30 daystreatment safety and adverse events

Countries

China

Contacts

CONTACTLIN YANG, Doctor
linyangcicams@126.com010-13681015148
PRINCIPAL_INVESTIGATORLIN YANG, Doctor

Cancer Institute and Hospital, Chinese Academy of Medical Sciences

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 22, 2026