Dual-Targeting CAR-NK Cells Targeting Mesothelin (MSLN) and MUC1 in Advanced Pancreatic Ductal Adenocarcinoma
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)
Beijing Biotech
42 participants
Feb 2, 2026
INTERVENTIONAL
Conditions
Summary
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.
Eligibility
Inclusion Criteria10
- 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 Criteria5
- 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)
Interventions
Allogeneic CAR-NK cells engineered with a dual-recognition CAR targeting MSLN and MUC1. Administered as an IV infusion on Day 0 (dose level dependent).
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)
Example regimen: fludarabine (Days -5 to -3) and cyclophosphamide (Days -5 to -4) prior to CAR-NK infusion.
Locations(1)
View Full Details on ClinicalTrials.gov
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NCT07480928