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Dual-Target CAR-NK Cells Targeting Mesothelin (MSLN) and MUC1 in Advanced Pancreatic Ductal Adenocarcinoma (DUAL-NK-PDAC)

31. maj 2026 opdateret af: Beijing Biotech

A Phase 1/2, Open-label, Biomarker-guided, Dose-escalation and Expansion Study of Dual-targeting CAR-NK Cells Directed Against Mesothelin (MSLN) and MUC1, With an Exploratory CLDN18.2/MUC1 Dual-target Cohort, in Patients With Unresectable or Metastatic Pancreatic Ductal Adenocarcinoma (PDAC)

This example study evaluates the safety, tolerability, and preliminary anti-tumor activity of investigational, dual-targeting chimeric antigen receptor natural killer (CAR-NK) cell products for patients with advanced pancreatic ductal adenocarcinoma (PDAC). Participants are assigned to one of two biomarker-defined cohorts based on tumor antigen expression: (A) Mesothelin (MSLN) and/or MUC1, or (B) Claudin 18.2 (CLDN18.2) and/or MUC1. The study uses a dose-escalation followed by dose-expansion design to define a recommended Phase 2 dose (RP2D) and to estimate response rates in each cohort.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

  • Rationale: PDAC is characterized by aggressive biology, antigen heterogeneity, and an immunosuppressive tumor microenvironment. Dual-targeting CAR designs aim to reduce antigen-escape by enabling recognition of either target antigen on tumor cells.
  • Investigational products: Two off-the-shelf (allogeneic) CAR-NK products are evaluated. EB-DNK101 targets MSLN and MUC1. EB-DNK102 targets CLDN18.2 and MUC1. Both products are engineered to enhance persistence and incorporate an inducible safety switch .
  • Target assessment and cohort assignment: Tumor tissue (archival or fresh biopsy) is tested centrally by immunohistochemistry (IHC) for MSLN, MUC1, and CLDN18.2. Participants are assigned to Arm A (MSLN/MUC1) or Arm B (CLDN18.2/MUC1) based on predefined positivity thresholds. If more than one cohort is eligible, assignment prioritizes the strongest antigen expression and product availability.
  • Conditioning and administration: Participants receive lymphodepleting chemotherapy followed by intravenous infusion of the assigned CAR-NK product.

Repeat infusions (up to 3 total) may be permitted in the absence of prohibitive toxicity and with at least stable disease. Safety monitoring: Participants are monitored closely for cytokine release syndrome (CRS), immune effector cell-associated neurotoxicity syndrome (ICANS), infusion reactions, and other adverse events.

Dose-limiting toxicities (DLTs) are assessed during the first 28 days after first infusion.

  • Efficacy and biomarker assessments: Tumor response is assessed by imaging (RECIST v1.1) at regular intervals (every 8 weeks). Exploratory endpoints include CAR-NK expansion/persistence, cytokine profiling, and association of antigen density with response.
  • Target down-selection plan: After completion of Part 1 and an initial subset of Part 2 expansion participants, an internal scientific review compares antigen prevalence, manufacturability, safety, and preliminary activity across cohorts to prioritize the lead dual-target construct for subsequent confirmatory development.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

42

Fase

  • Fase 2
  • Fase 1

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

    • Guangdong
      • Shenzhen, Guangdong, Kina, 518036
        • Rekruttering
        • Peking University Shenzhen Hospital
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Age 18 to 75 years at the time of consent.
  • Histologically or cytologically confirmed pancreatic ductal adenocarcinoma (PDAC).
  • Unresectable locally advanced or metastatic disease with progression after at least 1 prior standard systemic therapy regimen, or intolerance/ineligibility for standard therapy.
  • At least 1 measurable lesion per RECIST v1.1.
  • Tumor antigen expression by central IHC (archival or fresh biopsy): • Arm A eligibility: MSLN positive and/or MUC1 positive. • Arm B eligibility: CLDN18.2 positive and/or MUC1 positive. (Example threshold: IHC 2+ or 3+ staining in >=50% of tumor cells, or H-score above protocol-defined cutoff.)
  • ECOG performance status 0-1.
  • Adequate organ function (example): ANC >= 1.0 x 10^9/L; platelets >= 75 x 10^9/L; hemoglobin >= 8 g/dL; AST/ALT <= 3x ULN (<= 5x ULN with liver metastases); total bilirubin <= 1.5x ULN; creatinine clearance >= 50 mL/min.
  • Life expectancy >= 12 weeks.
  • Negative pregnancy test for individuals of childbearing potential; agreement to use effective contraception during study participation and for a protocol-defined follow-up period.
  • Ability to understand and willingness to sign written informed consent.

Exclusion Criteria:

  • Active or untreated CNS metastases or carcinomatous meningitis.
  • Clinically significant uncontrolled infection (including uncontrolled bacterial, fungal, or viral infection).
  • Known active hepatitis B or hepatitis C with detectable viral load; known uncontrolled HIV infection.
  • Prior allogeneic hematopoietic stem cell transplant or solid organ transplant.
  • Prior gene-modified cellular therapy (e.g., CAR-T/CAR-NK) within 6 months or prior therapy targeting the same antigen(s) Ongoing requirement for systemic immunosuppressive therapy (e.g., chronic corticosteroids above physiologic replacement).
  • Clinically significant cardiovascular disease (e.g., recent myocardial infarction, uncontrolled arrhythmia, or NYHA class III/IV heart failure) within a protocol-defined period.
  • Active autoimmune disease requiring systemic treatment in the past 2 years (replacement therapy allowed).
  • Pregnant or breastfeeding.
  • Any medical, psychiatric, or social condition that, in the investigator's opinion, would interfere with safe participation or interpretation of results.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Arm A: EB-DNK101 (MSLN/MUC1 Dual-CAR NK)
Participants with PDAC whose tumors express MSLN and/or MUC1 per central IHC are assigned to Arm A.
Allogeneiske CAR-NK-celler udviklet med en dobbelterkendelses-CAR, der retter sig mod MSLN og MUC1. Administreres som en IV-infusion på dag 0 (dosisniveauafhængig).
Andre navne:
  • MSLN/MUC1 Dual-CAR NK, Dual-target CAR-NK (MSLN/MUC1)
Allogeneic CAR-NK cells engineered with a dual-recognition CAR targeting CLDN18.2 and MUC1. Administered as an IV infusion on Day 0 (dose level dependent).
Andre navne:
  • CLDN18.2/MUC1 Dual-CAR NK, Dual-target CAR-NK (CLDN18.2/MUC1)

fludarabine (Days -5 to -3) and cyclophosphamide (Days -5 to

-4) prior to CAR-NK infusion.

Andre navne:
  • Fludarabine + Cyclofosfamid, Konditioneringsregime
Eksperimentel: Arm B: EB-DNK102 (CLDN18.2/MUC1 Dual-CAR NK)
Participants with PDAC whose tumors express CLDN18.2 and/or MUC1 per central IHC are assigned to Arm B.
Allogeneiske CAR-NK-celler udviklet med en dobbelterkendelses-CAR, der retter sig mod MSLN og MUC1. Administreres som en IV-infusion på dag 0 (dosisniveauafhængig).
Andre navne:
  • MSLN/MUC1 Dual-CAR NK, Dual-target CAR-NK (MSLN/MUC1)
Allogeneic CAR-NK cells engineered with a dual-recognition CAR targeting CLDN18.2 and MUC1. Administered as an IV infusion on Day 0 (dose level dependent).
Andre navne:
  • CLDN18.2/MUC1 Dual-CAR NK, Dual-target CAR-NK (CLDN18.2/MUC1)

fludarabine (Days -5 to -3) and cyclophosphamide (Days -5 to

-4) prior to CAR-NK infusion.

Andre navne:
  • Fludarabine + Cyclofosfamid, Konditioneringsregime

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Maksimal tolereret dosis (MTD)
Tidsramme: 12 måneder
12 måneder
Forekomst af dosisbegrænsende toksiciteter (DLT'er)
Tidsramme: 28 dage
28 dage
Forekomst og sværhedsgrad af behandlingsrelaterede bivirkninger (TEAEs)
Tidsramme: 12 måneder
12 måneder

Sekundære resultatmål

Resultatmål
Tidsramme
Disease Control Rate (DCR)
Tidsramme: 12 måneder
12 måneder
Objektiv responsrate (ORR) ifølge RECIST v1.1
Tidsramme: 12 måneder
12 måneder
Varighed af respons (DOR)
Tidsramme: 24 måneder
24 måneder

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

2. marts 2026

Primær færdiggørelse (Anslået)

14. april 2027

Studieafslutning (Anslået)

17. marts 2028

Datoer for studieregistrering

Først indsendt

31. maj 2026

Først indsendt, der opfyldte QC-kriterier

31. maj 2026

Først opslået (Faktiske)

4. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

4. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

31. maj 2026

Sidst verificeret

1. maj 2026

Mere information

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