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A single-center prospective clinical study based on ctDNA-MRD monitoring to guide postoperative adjuvant chemotherapy for gastric cancer.

A single-center prospective clinical study based on ctDNA-MRD monitoring to guide postoperative adjuvant chemotherapy for gastric cancer.

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600118969
Enrollment
Unknown
Registered
2026-02-13
Start date
2026-02-28
Completion date
Unknown
Last updated
2026-02-16

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

Conditions

Gastric cancer or adenocarcinoma of the gastroesophageal junction

Interventions

ctDNA-MRD negative cohort:SOX regimen chemotherapy for 8 cycles.
ctDNA-MRD positive cohort ( randomized cohort ) Group A:SOX regimen chemotherapy for 8 cycles.
ctDNA-MRD positive cohort (randomized cohort) Group B:SOX regimen chemotherapy for 8 cycles,followed by S-1 oral treatment for 8 cycles.

Sponsors

Beijing Friendship Hospital ,Capital Medical University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1.Age greater than 18 years old, men and women are not limited. 2.Pathological diagnosis of gastric or gastroesophageal junction adenocarcinoma . 3.Radical R0 resection, pathological stage II or III ( according to AJCC 8th version ) . 4.physical condition score ( ECOG ) <=1. 5.Samples with complete follow-up data. 6.Patients or family members, who can understand the research program and are willing to participate in this study, provide written informed consent.

Exclusion criteria

Exclusion criteria: 1.Patients received systemic neoadjuvant chemotherapy or chemoradiotherapy before operation. 2.Pregnant or lactating female patients. 3.History of other malignant tumors in the past 5 years. 4.Any severe or uncontrolled systemic disease that the researchers believe may significantly affect the risk / benefit balance of patients, such as severe heart disease ( NYHA class III-IV ), active severe infection, decompensated liver disease / renal failure, etc. 5.Patients or family members can not understand the conditions and objectives of this study. 6.The researchers believe that is not suitable for the group.

Design outcomes

Primary

MeasureTime frame
Disease-Free Survival;

Secondary

MeasureTime frame
Overall Survival;Adverse events related to chemotherapy;

Countries

China

Contacts

Public ContactWeiDeng

Beijing Friendship Hospital ,Capital Medical University

dengweiwei@126.com+86 10 6313 8712

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 19, 2026