Probiotics for gastric cancer patients undergoing chemotherapy

Effect of Perioperative Probiotic Supplements on Postoperative Short-term Outcomes in Gastric Cancer Patients Receiving Neoadjuvant Chemotherapy: A Prospective, Randomized, Controlled, Multicenter Clinical Trial

Not applicable Interventional The Affiliated Hospital of Qingdao University · NCT05901779

This study is testing if taking probiotic supplements can help gastric cancer patients undergoing chemotherapy have fewer infections and better recovery after surgery.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment318 (estimated)
Ages18 Years to 80 Years
SexAll
SponsorThe Affiliated Hospital of Qingdao University Academic / other
Drugs / interventionschemotherapy
Locations1 site (Qingdao, Shandong)
Trial IDNCT05901779 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effects of probiotic supplements on patients with gastric cancer who are receiving neoadjuvant chemotherapy. It is a multicentre randomized controlled trial that divides participants into two groups: one receiving probiotics and the other receiving a placebo. The aim is to assess whether probiotics can reduce postoperative infections and improve short-term outcomes after surgery. The study will include patients aged 18-80 with confirmed gastric adenocarcinoma who meet specific eligibility criteria.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18-80 with histologically confirmed gastric adenocarcinoma who are scheduled to receive neoadjuvant chemotherapy.

Not a fit: Patients requiring emergency surgery, those with recent antibiotic use, or individuals with certain infections or autoimmune diseases may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved postoperative outcomes and reduced complications for gastric cancer patients undergoing chemotherapy.

How similar studies have performed: While previous studies have suggested potential benefits of probiotics in reducing postoperative complications, this is one of the first large-scale, multicentre trials specifically targeting gastric cancer patients receiving neoadjuvant chemotherapy.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* 18-80 years old
* male and female
* clinical stage was T3/4N+ evaluated by CT/MR/EUS at new diagnosis (before any anti-cancer treatment) , complete 2-4 cycles preoperative chemotherapy based on 5-FU (such as SOX, FLOX, ect.) at 3-6 weeks before surgery
* ASA grade was Ⅰ\~Ⅲ
* radical minimal-invasive gastrectomy via laparoscope or DaVinci is judged as possible
* histologically confirmed gastric adenocarcinoma
* ECOG score is 0\~1
* patients who provide a written informed consent before entering study screening

Exclusion Criteria:

* need emergency surgery due to performation and/or obstruction
* receive antibiotics and/or glucocorticoids within 14 days before surgery
* exist bacterial infection and/or autoimmune disease and/or IBD currently
* intolerance or allergic to probiotics
* upper abdominal surgery history
* use probiotics within 7 days before intervention, such as yogurt, ect.
* participate in other clinical trials currently
* severe mental illness
* can not participate in this trial due to severe illness of other organs evaluated by researchers, such as severe cardiac insufficiency (LVEF\<30%, NYHA\>Ⅱ, severe arrhythmia, congestive heart failure, myocardial infarction within 6 months), liver dysfunction (Child-Pugh C), renal dysfunction (need hemodialysis)
* need simultaneous surgery
* lactation or pregnancy
* refuse to participate in this trial

Where this trial is running

Qingdao, Shandong

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Gastric CancerNeoadjuvant Chemotherapy
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.