Clinical trial NCT06609759: Postoperative Adjuvant Therapy for Stage II-III Gastric Cancer
Official title: Efficacy and Safety of Postoperative Adjuvant Therapy for Stage II-III Gastric Cancer: a Prospective, Observational Study
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Stage II-III Gastric Cancer
Lead sponsor: Qilu Hospital of Shandong University
Sponsor class: OTHER
Collaborators: name: Shandong Provincial Hospital
name: Jinan Central Hospital
name: Yantai Yuhuangding Hospital
name: The Affiliated Hospital of Qingdao University
First posted: 2024-09-24
Enrollment: 197
Sex: ALL
Minimum age (years): 18
Maximum age (years): 75
Standard ages: ADULT
OLDER_ADULT
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: D2 gastrectomy followed by R0 resection, and postoperative pathology confirmed stage II-III gastric cancer

Brief summary: For patients with stage II-III gastric cancer after radical D2 resection and R0 resection, postoperative adjuvant therapy guided by ctDNA-MRD (MRD-GATE external cohort) was not inferior to the standard chemotherapy regimen (this cohort).


Eligibility criteria: Inclusion Criteria:

1. Patients who have undergone D2 gastrectomy, achieved R0 resection, and are pathologically diagnosed with stage II-III gastric cancer.
2. No preoperative neoadjuvant or adjuvant therapy received.
3. Voluntary participation with signed informed consent, demonstrating good compliance and willingness to cooperate with follow-up procedures.
4. Age between 18-75 years, with no gender restrictions.
5. Eastern Cooperative Oncology Group (ECOG) performance status of 0-1.
6. Estimated survival of 6 months or more.
7. Baseline hematological and biochemical parameters within specified limits: a. Hemoglobin ≥ 80g/L. b. Absolute neutrophil count ≥ 1.5×10\^9/L. c. Platelet count ≥ 100×10\^9/L. d. Aspartate or alanine aminotransferase ≤ 2.5 times the upper limit of normal. e. Alkaline phosphatase ≤ 2.5 times the upper limit of normal. f. Thyroid-stimulating hormone (TSH) ≤ 1 times the upper limit of normal (if abnormal, T3 and T4 levels must be normal).

Exclusion Criteria:

1. Pregnant or lactating women, or women of childbearing potential with a positive pregnancy test at baseline.
2. Evidence of postoperative recurrence or metastasis.
3. Previous anti-tumor therapy, including chemotherapy, radiotherapy, or immunotherapy.
4. Positive resection margins identified in postoperative pathology.
5. History of other malignancies within the past five years, except certain skin cancers, superficial bladder cancer, in situ cervical or breast cancer.
6. Uncontrolled pleural effusion, pericardial effusion, or ascites.
7. Severe cardiovascular conditions such as symptomatic coronary artery disease, congestive heart failure (grade ≥ II), uncontrolled arrhythmias, or myocardial infarction within the last 12 months.
8. Uncontrolled infection, severe kidney disease, or other significant concurrent diseases.
9. Allergic reactions to study drugs.
10. Receipt of any anti-tumor therapy within 4 weeks prior to enrollment.
11. Administration of live attenuated vaccines within 4 weeks prior to the first study treatment dose or plans to receive such vaccines during the study period.
12. Positive HIV antibody, active hepatitis B or C (with specific viral load criteria).
13. Positive for COVID-19 nucleic acid or antigen test.
14. Other conditions deemed by the investigator to potentially affect patient safety or trial compliance, including serious illnesses requiring treatment, severe laboratory abnormalities, or other social or family reasons.

Primary outcomes:
measure: 3-year Disease-Free Survival (DFS) rate
timeFrame: 3-year after the last subject participating in
Secondary outcomes:
measure: Rate of De-escalation Treatment
timeFrame: 3-year after the last subject participating in
measure: Disease-Free Survival (DFS)
timeFrame: 3-year after the last subject participating in
measure: Cumulative Risk of Recurrence
timeFrame: 3-year after the last subject participating in
measure: 3-year Overall Survival (OS) Rate
timeFrame: 3-year after the last subject participating in
Other outcomes:
Locations:
city: Jinan
country: China
facility: Qilu Hospital of Shandong Univertisy
state: Shandong
city: Jinan
country: China
facility: Shandong Provincial Hospital Affiliated to Shandong First Medical University
state: Shandong
city: Jinan
country: China
facility: Jinan Central Hospital,
state: Shandong
city: Qingdao
country: China
facility: The Affiliated Hospital of Qingdao University
state: Shandong
city: Yantai
country: China
facility: Yantai Yuhuangding Hospital
state: Shandong
Study officials:
References: