A Phase II Study of Adjuvant Immunotherapy Targeting KRAS G12D, KRAS G12V, or TP53 R175H for Participants With Advanced Gastrointestinal Malignancies
Public ClinicalTrials.gov record NCT06690281. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: Gastrointestinal (GI) cancer affects the organs (such as the stomach, large and small intestine, pancreas, colon, liver, and biliary system) of the digestive tract. In some participants who have had surgery for GI cancer, blood tests show that the cancer has spread despite being unable to be identified by scans. Certain gene mutations (changes) in GI cancer (such as KRAS or TP53) can be targeted by T cells, a type of immune cell, in individuals with specific HLA types (genes that help proteins in the body know what is self and non-self). Researchers want to see if they can stop GI cancer from returning or spreading in people with these gene mutations and specific HLA types. Objective: To test therapy with modified T-cells to prevent or delay the return of GI cancer after standard treatment. T-cells play a role in the body s immune system. Eligibility: People aged 18 to 72 years with GI cancer that was treated with standard therapy and is not seen on imaging scans. They must have specific gene mutations and HLA types. They also must have certain clinical or blood tests showing the cancer is spreading (elevating CA19-9 or detectable ctDNA). Design: Participants will be divided into 2 groups. Participants nor the study team can choose what Group to participate in; this is done by randomization , like flipping a coin. Participants will have a 1-to-1 chance of being in Group 1 or Group 2. Group 1 will receive T-cell therapy. Their own T-cells will be collected. In a lab, the cells will be combined with a virus that carries a protein to target cancer cells. Group 1 participants will stay in the hospital for 3 weeks or more. They will have chemotherapy, and their modified T-cells will be infused through a tube attached to a needle inserted into a vein. Group 1 participants will visit the clinic every 3 months for 1 year and then every 6 months for 5 years. Then they will have follow-up visits for another 10 years under a different protocol. Group 2 participants will not receive treatment with T-cells. They will visit the clinic every 3 months for 1 year and then every 6 months for 5 years.
Study identification
- NCT ID
- NCT06690281
- Recruitment status
- Withdrawn
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- Not listed
Conditions and interventions
Conditions
Interventions
- KRAS TCR-Transduced PBL Biological
- Aldesleukin Drug
- Fludarabine Drug
- Cyclophosphamide Drug
Biological · Drug
Eligibility (public fields only)
- Age range
- 18 Years to 72 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Sep 8, 2025
- Primary completion
- Sep 8, 2025
- Completion
- Sep 8, 2025
- Last update posted
- Sep 10, 2025
2025
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institutes of Health Clinical Center | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT06690281, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Sep 10, 2025 · Synced Sep 8, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT06690281 live on ClinicalTrials.gov.