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RecruitingNCT07589530SOLID-NKUpdated May 15, 2026

Phase 1/2 Study of EB-NK-301 (Allogeneic TROP2-CAR NK Cells) in Advanced TROP2-Expressing Solid Tumors

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

From the registry’s dates

  • Started Mar 2026; still recruiting 7 months later.
Phase
Phase 1/2
Study type
Interventional
Enrollment
60
Allocation
Non-randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

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.

Read the detailed description

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.

02

Conditions studied

  • Advanced Solid Tumors
  • Metastatic Solid Tumors
  • TROP2-Expressing Solid Tumors

Keywords

  • Solid tumors
  • Immunotherapy
  • Adoptive cell therapy
  • Natural killer cells
  • NK cell therapy
  • CAR-NK
  • Dose escalation
  • Dose expansion
  • TROP2
03

In context

Lead sponsor

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.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age 18 to 75 years at the time of informed consent.
  • Histologically or cytologically confirmed advanced or metastatic solid tumor with documented TROP2 expression (per local testing or central confirmation).
  • Disease progression on, intolerance to, or ineligibility for available standard therapy.
  • At least one measurable lesion per RECIST 1.1.
  • ECOG performance status 0 to 1.
  • Adequate organ function (hematologic, renal, hepatic) within protocol-defined limits.
  • Life expectancy ≥ 12 weeks.
  • Willingness to use effective contraception during study participation and for a protocol-defined period after last infusion (if of childbearing potential).
  • Ability to understand and willingness to sign written informed consent.

Exclusion criteria

Exclusion Criteria:

  • Active central nervous system (CNS) metastases or leptomeningeal disease (unless treated and clinically stable for ≥ 4 weeks).
  • Prior allogeneic hematopoietic stem cell transplant or solid organ transplant.
  • Uncontrolled active infection, including uncontrolled hepatitis B, hepatitis C, or HIV infection.
  • Active autoimmune disease requiring systemic immunosuppression.
  • Clinically significant cardiovascular disease (e.g., recent myocardial infarction or stroke within 6 months, uncontrolled arrhythmia).
  • Receipt of another investigational agent within 2 weeks (or 5 half-lives, whichever is longer) prior to lymphodepleting chemotherapy.
  • Prior gene-modified cellular therapy within 3 months prior to enrollment.
  • Systemic corticosteroid therapy > 10 mg/day prednisone equivalent within 7 days prior to lymphodepletion (excluding physiologic replacement).
  • Pregnant or breastfeeding.
05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
60 participants (estimated)

Study arms

  • Experimental
    Dose Escalation

    Sequential dose escalation of EB-NK-301 following lymphodepleting chemotherapy to evaluate safety, DLTs, and identify RP2D.

    Biological: EB-NK-301 · Drug: Fludarabine

  • Experimental
    Dose Expansion

    Expansion cohorts at the RP2D in selected TROP2-expressing tumor types to further assess safety and preliminary efficacy.

    Biological: EB-NK-301 · Drug: Fludarabine

Interventions

  • BiologicalEB-NK-301

    Investigational allogeneic CAR-NK cell product targeting TROP2, administered by intravenous infusion.

    Also known as: TROP2-CAR NK

  • DrugFludarabine

    Lymphodepleting chemotherapy administered prior to EB-NK-301 infusion to facilitate immune cell engraftment and persistence.

06

What researchers measure

Primary outcomes

  1. Incidence of dose-limiting toxicities (DLTs) (CTCAE v5.0)

    Time frame: 28 days

  2. Incidence and severity of treatment-emergent adverse events (AEs)

    Time frame: 12 months

  3. Recommended Phase 2 dose (RP2D) of EB-NK-301

    Time frame: 6 months

Secondary outcomes

  1. Objective response rate (ORR) per RECIST 1.1

    Time frame: 12 months

  2. Duration of response (DoR)

    Time frame: 24 months

  3. Overall survival (OS)

    Time frame: 24 months

07

Study locations

1 of 1 sites recruiting
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 15, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07589530
Lead sponsor
Beijing Biotech
Responsible party
Sponsor
First posted
May 15, 2026
Start date
Mar 2, 2026
Primary completion
Feb 14, 2027 (estimated)
Completion
Mar 17, 2028 (estimated)
Last update
May 15, 2026

Study contacts

shan S Lu, Phd
Contact
Seni-Lu@beijing-biotech.com
+86 13076790030

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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