A Phase 1/2 interventional study of EB-NK-301 and Fludarabine in Advanced Solid Tumors, Metastatic Solid Tumors and TROP2-Expressing Solid Tumors, sponsored by Beijing Biotech. Recruiting at 1 site in China. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2026-05-15.
Sponsored by Beijing Biotech · Phase 1/2, Interventional, and Treatment
study evaluates EB-NK-301, an investigational off-the-shelf allogeneic CAR-NK cell product targeting TROP2, in adults with advanced or metastatic solid tumors that express TROP2 and have progressed after standard therapy.
The primary goals are to assess safety and tolerability, identify dose-limiting toxicities (DLTs), and determine a recommended Phase 2 dose (RP2D). Secondary goals include preliminary anti-tumor activity, persistence of infused CAR-NK cells, and exploratory immune biomarkers.
Study Overview: The study includes two parts. Part A (dose escalation) uses a standard dose-escalation design to evaluate multiple dose levels of EB-NK-301 after lymphodepleting chemotherapy. Part B (dose expansion) enrolls additional participants at the selected RP2D to further characterize safety and to estimate preliminary efficacy within selected tumor-type cohorts.
Treatment Plan: Participants receive lymphodepleting chemotherapy (fludarabine and cyclophosphamide) followed by intravenous EB-NK-301 infusions. Participants are monitored closely for cytokine release syndrome (CRS), immune effector cell-associated neurotoxicity syndrome (ICANS), infusion reactions, and other adverse events.
Assessments: Tumor imaging is performed every 8 weeks during the first 12 months, then every 12 weeks as clinically indicated. Blood samples are collected to assess CAR-NK cell persistence, cytokines, and other immune biomarkers.
Follow-up: Participants are followed for safety and survival for up to 24 months after first infusion.
Beijing Biotech is the lead sponsor of 32 studies on the registry; 32 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Sequential dose escalation of EB-NK-301 following lymphodepleting chemotherapy to evaluate safety, DLTs, and identify RP2D.
Biological: EB-NK-301 · Drug: Fludarabine
Expansion cohorts at the RP2D in selected TROP2-expressing tumor types to further assess safety and preliminary efficacy.
Biological: EB-NK-301 · Drug: Fludarabine
Investigational allogeneic CAR-NK cell product targeting TROP2, administered by intravenous infusion.
Also known as: TROP2-CAR NK
Lymphodepleting chemotherapy administered prior to EB-NK-301 infusion to facilitate immune cell engraftment and persistence.
Incidence of dose-limiting toxicities (DLTs) (CTCAE v5.0)
Time frame: 28 days
Incidence and severity of treatment-emergent adverse events (AEs)
Time frame: 12 months
Recommended Phase 2 dose (RP2D) of EB-NK-301
Time frame: 6 months
Objective response rate (ORR) per RECIST 1.1
Time frame: 12 months
Duration of response (DoR)
Time frame: 24 months
Overall survival (OS)
Time frame: 24 months
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