About this trial
This Phase 1/2 study evaluates the safety, tolerability, and preliminary efficacy of target-selected CAR-natural killer (CAR-NK) cells in adults with relapsed or refractory B2 thymoma or thymic carcinoma. Participants undergo centralized tumor antigen assessment (CD30, CD5, and mesothelin). Based on the dominant and clinically actionable antigen expression profile, each participant is assigned to one of three parallel cohorts (CD30-CAR-NK, CD5-CAR-NK, or mesothelin-CAR-NK). All cohorts use the same lymphodepleting conditioning regimen followed by CAR-NK infusion(s).
Eligibility criteria
Qualifiers
Age 18 to 75 years at the time of consent.
Histologically confirmed B2 thymoma or thymic carcinoma that is unresectable, metastatic, or recurrent.
Relapsed or refractory after at least 1 prior systemic therapy (including a platinum-based regimen for thymic carcinoma when appropriate) or no standard curative option available.
Tumor antigen positivity for at least one of the following by central laboratory assessment: CD30, CD5, or mesothelin. Cohort assignment is based on the dominant target (pre-specified algorithm) and feasibility of manufacturing/availability.
Disqualifiers
Active central nervous system involvement by malignancy requiring immediate therapy.
Prior gene-modified cellular therapy (e.g., CAR-T, CAR-NK) within 90 days or unresolved ≥Grade 2 toxicity from prior cellular therapy.
Uncontrolled infection, including active tuberculosis, or uncontrolled hepatitis B or C infection; known uncontrolled HIV infection.
Clinically significant autoimmune disease requiring systemic immunosuppression (e.g., >10 mg/day prednisone equivalent) within 14 days of conditioning, except for stable endocrine replacement.
Trial design
Treatments tested in this trial
- Cyclophosphamide
- Fludarabine
- EB-CAR30-NK
- EB-CAR5-NK
- EB-CARMSLN-NK
- Rimiducid (AP1903)