Clinical trial Recruiting at 1 site Observational Ages 18 and up

Gastric Cancer Clinicobiological Cohort Study

Official title: R-GASTIM - Clinicobiological Cohort of Gastric Cancers

Run by Centre Leon Berard · NCT07787052 · Data updated 2026-11-12

This study tests the tumor microenvironment in gastric and gastroesophageal junction cancers from patients who had surgery after standard neoadjuvant chemotherapy at a single center.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment60 (estimated)
SponsorCentre Leon Berard
Academic / other
Drugs / interventionschemotherapy
Locations1 site (Lyon)
StatusRecruiting
StartedSeptember 30, 2024
Main results expectedSeptember 30, 2027
Study endsSeptember 30, 2027
Registry record updatedAugust 26, 2026
Trial IDNCT07787052 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with histologically proven, non-metastatic resectable gastric or GEJ adenocarcinoma (Stage IB–III) who received standard neoadjuvant chemotherapy and have an available archival FFPE tumor block with at least 20% tumor cells, plus collected lymph nodes.

Probably not a fit

Patients who do not have an archival FFPE block or who decline participation may not contribute to the study findings.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinicobiological cohort collects tumor and lymph node tissue from adults with non-metastatic, resectable gastric or GEJ adenocarcinoma who have completed standard neoadjuvant chemotherapy. RNA sequencing and HyperIon analysis are used to characterize the tumor microenvironment, using samples obtained as part of routine care. The study aims to describe molecular and cellular features in relation to treatment response and surgical outcomes. Enrollment is limited to patients with available archival FFPE blocks and a confirmed post-therapy pathology response per TRG criteria. Participation is voluntary and linked to standard clinical management at Centre Léon Bérard.

Why it matters

Potential benefit: Findings could improve understanding of how the tumor microenvironment relates to treatment response and may inform future personalized approaches.

How similar studies have gone: Similar microenvironment studies in gastric cancer using RNA sequencing have yielded biologically informative results, though this specific clinicobiological approach is relatively unique to this institution.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult patients with histologically proven non-metastatic resectable gastric and gastroesophageal junction adenocarcinoma, Stage IB to III be treated with standard neoadjuvant chemotherapy
* Knwon response to neoadjuvant chemotherapy as per TRG criteria
* Surgery of primary tumor done at Centre Léon Bérard. Availability of archival FFPE tumor block from initial diagnosis with at least 20% of tumor cells and collected lymp nodes

Exclusion Criteria:

* Patient refusal to participate to this clinicobiological cohort

Where it's running

  • Centre Léon Bérard
    Lyon, France
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.