An Open-Label, Multicenter Phase 1/2 Study of Allogeneic Dual-Target CSPG4/GD2 CAR-NK Cells (EB-DTKN-401) in Adults With Unresectable or Metastatic Cutaneous Melanoma or Metastatic Uveal Melanoma
This is a first-in-human, open-label, multicenter phase 1/2 study evaluating the safety, feasibility, recommended phase 2 dose (RP2D), and preliminary antitumor activity of allogeneic dual-target CSPG4/GD2 CAR-NK cells (EBDTKN-401) after lymphodepleting chemotherapy in adults with unresectable or metastatic cutaneous melanoma or metastatic uveal melanoma whose disease has progressed after standard therapy
• Age 18-75 years at consent.
• Histologically confirmed unresectable/metastatic cutaneous melanoma or metastatic uveal melanoma.
• Disease progression after standard therapy, intolerance to standard therapy, or no remaining standard option expected to provide meaningful benefit. For cutaneous melanoma: prior anti-PD-1/L1 (with or without antiCTLA-4) unless contraindicated; if BRAF V600-mutant, prior BRAF/MEK inhibitor therapy or documented unsuitability. For uveal melanoma: prior tebentafusp if HLA-A\*02:01-positive and eligible, or documented unsuitability/unavailability plus at least one prior systemic therapy.
• Tumor demonstrates CSPG4 and/or GD2 expression in archival or fresh tissue by central testing (suggested positivity threshold: at least 25% viable tumor cells by IHC or equivalent validated assay).
• At least 1 measurable lesion by RECIST v1.1.
• ECOG performance status 0-1.
• Adequate bone marrow, renal, hepatic, cardiac, and pulmonary function per protocol.
• Life expectancy of at least 12 weeks.
• Treated, stable brain metastases are allowed if neurologically stable for at least 4 weeks and not requiring escalating corticosteroids.
• Willingness to use effective contraception and comply with protocol-required visits, blood sampling, and requested biopsies.