Engineered immune cells take aim at Hard-to-Treat solid tumors
NCT ID NCT05437315
First seen Jun 25, 2026 · Last updated Aug 27, 2026 · Updated 3 times
Summary
This trial tests a new type of immune cell therapy called bi-specific CAR-T cells that target two proteins (GD2 and PSMA) found on some solid tumors. The study involves 60 patients whose tumors have not responded to standard treatments. Researchers will check safety and whether the cells shrink tumors.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- bi-4SCAR GD2/PSMA T cells (a type of immune cell therapy)
- What this could lead to
- If successful, this could offer a new treatment option for patients with certain solid tumors that have not responded to standard therapy.
- What could go wrong
- This is an early-phase trial (phase 1/2) with only 60 participants, so results may not apply broadly. CAR-T cell therapy can cause serious side effects like cytokine release syndrome.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 1/2
Runs two stages together: safety and dose first, then whether the treatment works.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Dec 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2030
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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1 year to 75 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Patients with tumors have received standard first-line therapy and have been judged to be non-resectable, metastatic, progressive or recurrent. 2. The expression status of GD2 or PSMA antigens in the tumor tissue will be determined for eligibility. Positive expression is defined by GD2 and PMSA antibody staining results based on immunohistochemistry or flow cytometry analyses. 3. Body weight greater than or equal to 10 kg. 4. Age: ≥1 year and ≤ 75 years of age at the time of enrollment. 5. Life expectancy: at least 8 weeks. 6. Prior Therapy: There is no limit to the number of prior treatment regimens. Any grade 3 or 4 non-hematologic toxicity of any previous therapy must be resolved to grade 2 or less. 7. Participant must not have received hematopoietic growth factors for at least 1 week prior to mononuclear cells collection. 8. At least 7 days must have elapsed since the completion of therapy with a biologic agent, selected targeted agent or a metronomic non-myelosuppressive regimen. 9. At least 4 weeks must have elapsed since prior therapy that included a monoclonal antibody. 10. At least 1 week since any radiation therapy at the time of study entry. 11. Karnofsky/jansky score of 60% or greater. 12. Cardiac function: Left ventricular ejection fraction greater than or equal to 40/55 percent. 13. Pulse Ox greater than or equal to 90% on room air. 14. Liver function: defined as alanine transaminase (ALT) \<3x upper limit of normal (ULN), aspartate aminotransferase (AST) \<3x ULN; serum bilirubin and alkaline phosphatase \<2x ULN. 15. Renal function: Patients must have serum creatinine less than 3 times upper limit of normal. 16. Marrow function: White blood cell count ≥1000/ul, Absolute neutrophil count ≥500/ul, Absolute lymphocyte count ≥500/ul, Platelet count ≥25,000/ul (not achieved by transfusion). 17. Patients with known bone marrow metastatic disease will be eligible for study as long as they meet hematologic function criteria, and the marrow disease does not have hematologic toxicity. 18. For all patients enrolled in this study, themselves or their parents or legal guardians must sign an informed consent and assent. Exclusion Criteria: 1. Existing severe illness (e.g. significant cardiac, pulmonary, hepatic diseases, etc.) or major organ dysfunction, or greater than grade 2 hematologic toxicity. 2. Untreatable central nervous system (CNS) metastasis: Patients with previous CNS tumor involvement that has been treated and is stable for at least 6 weeks following completion of therapy are eligible. 3. Previous treatment with other genetically engineered GD2 or PSMA-specific CAR T cells or antibody therapy. 4. Active HIV, Hepatitis B virus (HBV), Hepatitis C virus (HCV) infection or uncontrolled infection. 5. Patients who require systemic corticosteroid or other immunosuppressive therapy. 6. Evidence of tumor potentially causing airway obstruction. 7. Inability to comply with protocol requirements. 8. Insufficient CAR T cells availability.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Shenzhen Geno-immune Medical Institute
Shenzhen, Guangdong, 518000, China
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- Mining Responders' tumors for clues to a universal cancer therapy
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