About this trial
Phase 1/2 study evaluates the safety, feasibility, and preliminary antitumor activity of allogeneic dual-target CD70/CAIX CAR-NK cells after fludarabine/cyclophosphamide lymphodepletion in adults with advanced or metastatic clear cell RCC that has progressed after standard therapy. The study is designed to determine a recommended dose and schedule, characterize hepatobiliary safety, and explore whether CD70-high, CAIX-high, or dual-high tumors derive the greatest benefit. Biomarker-defined activity signals will be used to guide whether later development should prioritize CD70, CAIX/CA9, or continued dual-targeting.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Written informed consent and willingness to comply with protocol procedures.
Age >= 18 years at the time of consent.
Histologically confirmed unresectable or metastatic clear cell RCC, or RCC with a clear-cell component, with radiographic progression after standard therapy.
Prior exposure to at least one PD-1 / PD-L1-based regimen and at least one VEGF-pathway targeted regimen, or documented intolerance / unsuitability for available standard systemic options.
Disqualifiers
Active, untreated, or symptomatic central nervous system metastases, leptomeningeal disease, or uncontrolled seizure disorder.
Prior gene-modified cellular therapy (including prior CAR-T, CAR-NK, CAR-NKT, or TCR-engineered therapy) within the protocol-defined washout window.
Prior allogeneic stem cell transplant or solid organ transplant with ongoing clinically significant immunosuppression.
Active autoimmune disease requiring systemic immunosuppressive treatment; physiologic replacement doses are permitted.
Trial design
Single group
Treatments tested in this trial
EB-701/CA9-NK
Biological/Vaccinedual-target allogeneic CAR-NK cells (single infusion on Day 0; optional second infusion on Day 15 if safety criteria are met)
Fludarabine
Druglymphodepletion
Treatment groups
Trial outcomes
Primary outcomes
Incidence of dose-limiting toxicities (DLTs)
Incidence of dose-limiting toxicities (DLTs) during the DLT window, graded by CTCAE v5.0
Determination of recommended phase 2 dose
Secondary outcomes
Objective response rate (ORR) per RECIST 1.1 by independent radiologic review
Overall Survival (OS)
Overall Survival (OS) is the length of time from diagnosis or treatment start that patients remain alive
Sponsors and contacts
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