Clinical trial · Interventional
Study to Evaluate Safety and Antitumor Activity of Lete-Cel (GSK3377794) in HLA-A2+ Participants With NY-ESO-1 Positive Previously Untreated Advanced (Metastatic or Unresectable) Synovial Sarcoma and Myxoid/Round Cell Liposarcoma
Evaluation of Safety and Antitumor Activity of Lete-Cel (GSK3377794) in HLA-A2+ Participants With NY-ESO-1 Positive Previously Untreated Advanced (Metastatic or Unresectable) Synovial Sarcoma and Myxoid/Round Cell Liposarcoma
NCT05993299CI-TRIAL-00125394completedPhase 2Results postedClinicalTrials.gov clinicaltrialsProvenance
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
This trial will evaluate safety and efficacy of human engineered T-cell therapies, in participants with advanced tumors. This trial is a sub study of the Master study NCT03967223.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Neoplasms | Neoplasm | ONTOLOGY_EXACT | 0.90 |
Interventions
Interventions (3)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Cyclophosphamide | Drug | Cyclophosphamide | ALIAS |
| Fludarabine | Drug | Fludarabine | ALIAS |
| Letetresgene autoleucel | Drug | Letetresgene Autoleucel | ALIAS |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- Letetresgene autoleucel
- interventionNames
- Drug: Letetresgene autoleucel
- Drug: Cyclophosphamide
- Drug: Fludarabine
Primary outcomes (1)
- measure
- Overall Response Rate (ORR)
- timeFrame
- Up to approximately 36 months
- description
- ORR is defined as the percentage of participants with a confirmed complete response (CR) or confirmed partial response (PR) via investigator assessment per Response Evaluation Criteria in Solid Tumors Criteria (RECIST) version 1.1 relative to the total number of participants in the analysis population. CR is defined as disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to less than (\<)10 millimeters (mm). PR is defined as at least a 30% decrease in the sum of the diameters of target lesions, taking as a reference, the baseline sum of the diameters (e.g., percent change from baseline). 95% CI is based on Clopper-Pearson exact confidence interval.
Secondary outcomes (13)
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 10 Years
Show eligibility criteria text
Inclusion Criteria: * Participant must be greater than or equal to 10 years of age on the day of signing informed consent. * Participant scheduled to receive clinical drug product supply must also weigh ≥40 kg * Participant must be positive for HLA-A\*02:01, HLA-A\*02:05, and/or HLA-A\*02:06 alleles by a designated central laboratory * Participant's tumor is positive for NY-ESO-1 expression by a designated central laboratory. * Participant has a diagnosis of synovial sarcoma (SS) or myxoid/round cell liposarcoma (MRCLS) * Performance status: dependent on age - Lansky \> 60, Karnofsky \> 60, Eastern * Cooperative Oncology Group 0-1. * Participant must have adequate organ function and blood cell counts, within 7 days prior to leukapheresis. * At time of treatment, participant has measurable disease according to RECIST v1.1. * Male or female. Contraception requirements will apply at the time of leukapheresis and treatment. * Consultation for prior history per protocol specifications. Exclusion Criteria: * Central nervous system metastases. * Any other prior malignancy that is not in complete remission. * Clinically significant systemic illness (.(Serious active infections or significant cardiac, pulmonary, hepatic or other organ dysfunction, that in the judgment of the Investigator would compromise the participant's ability to tolerate protocol therapy or significantly increase the risk of complications) * Prior or active demyelinating disease. * History of chronic or recurrent (within the last year prior to leukapheresis) severe autoimmune or immune mediated disease (e.g. Crohn's disease, systemic lupus) requiring steroids or other immunosuppressive treatments. * Previous treatment with genetically engineered NY-ESO-1-specific T cells. * Previous NY-ESO-1 vaccine or NY-ESO-1 targeting antibody. * Prior gene therapy using an integrating vector. * Previous allogeneic hematopoietic stem cell transplant. * Washout periods for prior radiotherapy and systemic chemotherapy must be followed. * Participant had major surgery in less than or equal to 28 days of first dose of study intervention. * Prior radiation exceeds protocol specified limits.
References
Publications (0)
Data not yet available
No reference posted for this study.