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Multi-center Study of TBI-1301 (INN: Mipetresgene Autoleucel; Mip-cel) in Patients With NY-ESO-1 Positive Synovial Sarcoma

Multi-center Study of TBI-1301 (INN: Mipetresgene Autoleucel; Mip-cel) in Patients With NY-ESO-1 Positive Synovial Sarcoma

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07174427
Enrollment
5
Registered
2025-09-16
Start date
2026-01-05
Completion date
2032-03-01
Last updated
2026-02-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Synovial Sarcomas

Keywords

adoptive cell transfer, NY-ESO-1, T cell receptor, ex vivo gene therapy, synovial sarcoma

Brief summary

The purpose of this study is to verify the safety and the efficacy of TBI-1301 for NY-ESO-1 expressing synovial sarcoma when administered following cyclophosphamide/fludarabine pre-treatment.

Interventions

BIOLOGICALTBI-1301

Split dose of TBI-1301 is administered intravenously for 2 days following cyclophosphamide/fludarabine pre-treatment.

DRUGCyclophosphamide

Cyclophosphamide (750mg/m2/day x 2 days Intravenous (IV)) is administered as pre-treatment medication of TBI-1301.

DRUGFludarabine

Fludarabine (30mg/m2/day x 2 days Intravenous (IV)) is administered as pre-treatment medication of TBI-1301.

Sponsors

Takara Bio Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. ≥ 18 years of age 2. Histologically confirmed synovial sarcoma 3. Surgically unresectable tumor 4. Progressing or recurrent synovial sarcoma which has been treated with 1-4 regimens of systemic chemotherapies including anthracycline 5. HLA-A\*02:01 or HLA-A\*02:06 positive 6. Tumor that express NY-ESO-1 by immunohistochemistry 7. Measurable lesions that are evaluable by the RECIST ver1.1 8. ECOG Performance Status of 0, 1 or 2 9. No treatment such as chemotherapy and be expected to recover fully from the previous treatment at the time of the lymphocytes collection for manufacturing 10. Life expectancy ≥ 16 weeks after consent 11. No severe damage on the major organs (bone marrow, heart, lung, liver, kidney, etc) and meet the following lab value criteria; Total bilirubin ≤ 1.5 x upper limit of normal (ULN); AST(GOT), ALT(GPT) \< 3.0 x ULN; Creatinine \< 1.5 x ULN; 2,500/μL \< WBC ≤ULN; Hemoglobin ≥ 8.0g/dL; Platelets ≥ 75,000/μL 12. Patients must be able to understand the study contents and to give a written consent at his/her free will.

Exclusion criteria

1. Patients with the following conditions are excluded from the study; Unstable angina, cardiac infarction, or heart failure; Uncontrolled diabetes or hypertension; Active infection; Obvious interstitial pneumonia or lung fibrosis by chest X-ray; Active autoimmune disease requiring steroids or immunosuppressive therapy. 2. Active metastatic tumor cell invasion into CNS 3. Active multiple cancer 4. Positive for HBs antigen or HBV-DNA observed in serum 5. Positive for HCV antibody and HCV-RNA observed in serum 6. Positive for antibodies against HIV or HTLV-1 7. History of serious hypersensitivity reactions to bovine or murine derived substances. 8. History of hypersensitivity reaction to ingredients or excipients of investigational drugs used in this study 9. History of hypersensitivity reaction to antibiotics used in manufacturing for the investigational drug used in this study. 10. History of treatment with cell therapy or gene therapy 11. Alcohol or drug dependence that may interfere with study participation 12. Pregnant females, lactating females (except when they cease and do not resume lactation) or female and male patients who cannot agree to practice the adequate birth control from the consent to 6 months after infusion of the investigational drug. 13. Clinically significant systemic illness that in the judgment of the PI or sub-investigator would compromise the patient's ability to tolerate protocol therapy or significantly increase the risk of complications.

Design outcomes

Primary

MeasureTime frameDescription
Objective response rate52 weeksEvaluate response rate by measuring response using RECIST v1.1

Countries

Japan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 19, 2026