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Dual-Targeting CAR-NK Cells in Biomarker-Selected Advanced Colorectal Cancer (DUO-CRC-NK-111)

10. maj 2026 opdateret af: Beijing Biotech

A Phase 1/2, Biomarker-Assigned, Open-Label Dose Escalation and Expansion Study of Allogeneic Dual-Target CAR-NK Cells Targeting CEA (CEACAM5) and/or GUCY2C (GCC) With an Exploratory HER2/ERBB2-Positive Cohort in Subjects With Advanced or Metastatic Colorectal Cancer

This Phase 1/2 study evaluates the safety, tolerability, and preliminary anti-tumor activity of an allogeneic dual-target chimeric antigen receptor natural killer (CAR-NK) cell product in adults with advanced or metastatic colorectal cancer (CRC). Participants are assigned to one of three dual-target arms based on tumor antigen co-expression: (1) CEA+GUCY2C, (2) CEA+HER2, or (3) GUCY2C+HER2. Following dose escalation, the most suitable target pair (based on safety, feasibility, and early efficacy/biomarker signals) will be selected for dose expansion.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Colorectal cancer remains a major cause of cancer-related morbidity and mortality. CAR-NK therapy is being explored as a potentially safer, 'off-the-shelf' adoptive cell therapy platform with lower risk of graft-versus-host disease and typically less severe cytokine release than CAR-T in early experiences.

Target selection for solid tumors is limited by tumor heterogeneity and on-target/off-tumor expression. To reduce antigen escape and increase tumor selectivity, this study tests dual-target recognition against CRC-associated antigens: CEA (CEACAM5) and GUCY2C (GCC), with a HER2/ERBB2-positive subset as an exploratory population. GUCY2C is frequently retained in primary and metastatic CRC and is a well-established CRC target antigen. HER2 amplification/overexpression occurs in a minority of metastatic CRC and can be identified by validated IHC/ISH or genomic assays.

Biomarker assessment and target-pair selection: Tumor tissue (archival or fresh) is tested by central laboratory immunohistochemistry (IHC) for CEA and GUCY2C, and by HER2 testing per colorectal cancer criteria (IHC with reflex amplification testing as needed). Participants must meet co-expression thresholds for one antigen pair and are assigned accordingly. After Part A (dose escalation), a prespecified selection algorithm will nominate the target pair for expansion using a composite score including DLT rate, feasibility/manufacturing success, ORR/DCR signals, CAR-NK persistence, and evidence of target engagement. Treatment plan: Participants receive lymphodepleting chemotherapy followed by infusion of the assigned dual-target CAR-NK cells. A second infusion in the same cycle may be permitted in selected dose levels if safety criteria are met. Hospitalization/close monitoring is required during the early post-infusion period.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

48

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:

  • Histologically confirmed colorectal adenocarcinoma that is unresectable or metastatic and has progressed after, is intolerant to, or is ineligible for standard therapies.
  • Measurable disease per RECIST v1.1 (unless in minimal residual disease (MRD) or post-resection cohorts if a future amendment is planned).
  • Tumor antigen co-expression meeting central lab thresholds for one of the following pairs: CEA+GUCY2C, CEA+HER2, or GUCY2C+HER2.
  • ECOG performance status 0-1.
  • Adequate organ function (hematologic, renal, hepatic, and cardiac) as defined in protocol.
  • Recovered to Grade ≤1 from prior therapy-related toxicities (except stable Grade 2 neuropathy or alopecia).
  • Life expectancy ≥ 12 weeks.
  • Willingness to use effective contraception during study and for a protocol-defined period after cell infusion.

Exclusion Criteria:

  • Active, uncontrolled infection (including uncontrolled HBV/HCV) or known uncontrolled HIV infection.
  • Active CNS metastases that are symptomatic or require escalating steroids. (Stable treated CNS disease may be allowed per protocol.)
  • Prior gene-modified cellular therapy (CAR-T/CAR-NK/TCR-T) within 6 months, or any prior therapy that in the investigator's judgment increases risk of severe toxicity.
  • Clinically significant autoimmune disease requiring systemic immunosuppression within the past 6 months.
  • Concurrent anti-cancer therapy (other than protocol-permitted bridging) during the DLT window.
  • Pregnant or breastfeeding.
  • Significant cardiovascular disease (e.g., recent MI, uncontrolled arrhythmia), uncontrolled pulmonary disease, or other severe comorbidity that would increase risk.
  • Known hypersensitivity to study chemotherapy components (fludarabine/cyclophosphamide) or required supportive medications.
  • Any condition that, in the investigator's opinion, would interfere with study participation, safety monitoring, 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: CEA+GUCY2C Dual CAR-NK
CRC with tumor co-expression of CEA (CEACAM5) and GUCY2C (GCC) above prespecified thresholds
ogeneic dual-target CAR-NK cells manufactured from cord blood-derived NK cells, genetically engineered to express a tandem (dual-binding) CAR, an IL-15 support element (e.g., membrane-bound IL-15 or IL-15/IL-15R fusion), and an inducible suicide switch
Lymphodepleting chemotherapy ( fludarabine and cyclophosphamide) administered pre-infusion to facilitate CAR-NK cell engraftment.
Eksperimentel: CEA+HER2 Dual CAR-NK
CRC with CEA expression and HER2/ERBB2 positivity
ogeneic dual-target CAR-NK cells manufactured from cord blood-derived NK cells, genetically engineered to express a tandem (dual-binding) CAR, an IL-15 support element (e.g., membrane-bound IL-15 or IL-15/IL-15R fusion), and an inducible suicide switch
Lymphodepleting chemotherapy ( fludarabine and cyclophosphamide) administered pre-infusion to facilitate CAR-NK cell engraftment.
Eksperimentel: GUCY2C+HER2 Dual CAR-NK
CRC with GUCY2C expression and HER2/ERBB2 positivity
ogeneic dual-target CAR-NK cells manufactured from cord blood-derived NK cells, genetically engineered to express a tandem (dual-binding) CAR, an IL-15 support element (e.g., membrane-bound IL-15 or IL-15/IL-15R fusion), and an inducible suicide switch
Lymphodepleting chemotherapy ( fludarabine and cyclophosphamide) administered pre-infusion to facilitate CAR-NK cell engraftment.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
Forekomsten af dosisbegrænsende toksiciteter (DLT'er) graderet ved CTCAE v5.0.
Tidsramme: 28 dage
28 dage
Maksimalt tolererede dosis (MTD)
Tidsramme: 28 dage
28 dage
Objektiv responsrate (ORR) ved RECIST v1.1 i ekspansionskohorten.
Tidsramme: 12 uger
12 uger

Sekundære resultatmål

Resultatmål
Tidsramme
Progressionsfri overlevelse (PFS)
Tidsramme: 24 måneder
24 måneder
Forekomst og sværhedsgrad af bivirkninger
Tidsramme: 24 måneder
24 måneder
Disease control rate (DCR) and duration of response (DoR) by RECIST v1.1.
Tidsramme: 24 months
24 months

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. februar 2026

Primær færdiggørelse (Anslået)

14. marts 2027

Studieafslutning (Anslået)

17. marts 2028

Datoer for studieregistrering

Først indsendt

10. maj 2026

Først indsendt, der opfyldte QC-kriterier

10. maj 2026

Først opslået (Faktiske)

15. maj 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

15. maj 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

10. maj 2026

Sidst verificeret

1. maj 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • EB-CARNK-CRC-111

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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