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Behandling og sekundær forebyggelse af venøs tromboembolisme (VTE) hos voksne deltagere med solide og hematologiske cancerformer (ROXI-CAT-II)

3. november 2026 opdateret af: Regeneron Pharmaceuticals

Et 2-delt, fase 3, multicentrisk, randomiseret, åben-label, aktivt kontrolleret studie til vurdering af effektivitet og sikkerhed af REGN7508, en monoklonal antistof mod faktor XI, til behandling og sekundær forebyggelse af venøs tromboemboli hos deltagere med solide og hematologiske kræftformer (ROXI-CAT-II)

This study is researching an experimental drug called REGN7508 (called "study drug") and will consist of 2 parts: Part 1 and Part 2. The study is focused on participants with or without cancer who develop blood clots in certain veins (called Deep Vein Thrombosis [DVT]) that block blood flow (Part 1) or focused on participants with cancer who develop blood clots in certain veins (DVT) or the lungs (also called Pulmonary Embolism [PE]) (Part 2).

The aim of the study is to see how safe and effective the study drug is at treating and preventing further blood clots in participants with or without cancer (Part 1) or in participants with cancer (Part 2) compared with another treatment (apixaban).

The study is looking at several other research questions, including:

  • What side effects may happen from taking the study drug
  • How much study drug is in the blood at different times
  • Whether the body makes antibodies against the study drug (which could make the drug less effective or could lead to side effects)

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

1600

Fase

  • Fase 3

Kontakter og lokationer

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

Studiekontakt

Studiesteder

      • Sofia, Bulgarien, 1618
        • Rekruttering
        • Arensia Exploratory Medicine, Multiprofile Hospital for Active Treatment Sveta Sofia
    • Florida
      • Hialeah, Florida, Forenede Stater, 33013
        • Trukket tilbage
        • Bioresearch Partner- Hialeah Hospital
    • New York
      • New York, New York, Forenede Stater, 10021
        • Rekruttering
        • Memorial Sloan Kettering Cancer Center
    • Texas
      • El Paso, Texas, Forenede Stater, 79902
        • Trukket tilbage
        • El Paso Medical Research Institute (Medresearch Inc)
    • Kanagawa
      • Isehara-Shi, Kanagawa, Japan, 259-1193
        • Rekruttering
        • Tokai University Hospital
    • Tokyo
      • Shinjuku, Tokyo, Japan, 160-0023
        • Rekruttering
        • Tokyo Medical University Hospital
    • Yamaguchi
      • Ube, Yamaguchi, Japan, 755-8505
        • Rekruttering
        • Yamaguchi University Hospital
    • Bucharest
      • Bucharest, Bucharest, Rumænien, 022328
        • Rekruttering
        • Institute of Oncology Bucharest
    • Cluj
      • Cluj-Napoca, Cluj, Rumænien, 400015
        • Rekruttering
        • Arensia Exploratory Medicine, The Oncology Institute "Prof. Dr. Ion Chiricuta"
      • Busan, Sydkorea, 48108
        • Rekruttering
        • Inje University, Haeundae Paik Hospital
      • Seoul, Sydkorea, 06351
        • Rekruttering
        • Samsung Medical Center
      • Seoul, Sydkorea, 3080
        • Rekruttering
        • Seoul National University Hospital
      • Seoul, Sydkorea, 03722
        • Rekruttering
        • Yonsei University Health System, Severance Hospital
    • Gyeonggi-do
      • Yongin-si, Gyeonggi-do, Sydkorea, 16995
        • Rekruttering
        • Yonsei University Health System, Yongin Severance Hospital

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

18 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Key Inclusion Criteria:

  1. Has an Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 to 2 at the time of screening and day 1 prior to first dose of study intervention

  2. In Part 1 participants with cancer and Part 2 participants: Histologically confirmed diagnosis of malignant solid or select hematologic tumor (other than basal-cell or squamous-cell carcinoma of the skin alone) as described in the protocol

  3. Part 1 additional criteria:

    1. Has newly diagnosed symptomatic lower extremity DVT or incidentally-detected proximal lower extremity DVT (eg, popliteal or femoral) within 5 days (120 hours) of randomization (with imaging confirmation)
    2. Anticoagulation therapy with a therapeutic dose of a Direct Oral Anticoagulant (DOAC) for at least 3 months is indicated for the newly diagnosed proximal lower extremity DVT
  4. Part 2 additional criteria:

    1. Newly diagnosed VTE within 5 days (120 hours) of randomization (with imaging confirmation) as described in the protocol
    2. Anticoagulation therapy with a therapeutic dose of a DOAC for at least 6 months is indicated for newly diagnosed VTE

Key Exclusion Criteria:

  1. Is at high risk of intracranial bleeding in the opinion of the investigator

  2. Known bleeding conditions (eg, Hemophilia A or B, von Willebrand's disease), hemorrhagic tumor sites, or other conditions with a high risk for bleeding (eg, hepatic disease associated with coagulopathy)

  3. Contraindication to anticoagulation in the opinion of the investigator

  4. Life expectancy of < 6 months

  5. Part 1 participants with cancer and Part 2 additional exclusion criteria:

    1. Has acute leukemia or myelodysplastic syndrome
    2. Has primary brain tumor
    3. Has brain metastases as described in the protocol
  6. Part 1 additional exclusion criteria:

    1. Has a symptomatic PE
    2. Has an asymptomatic (incidentally-diagnosed) PE in a segmental or larger pulmonary artery
  7. Part 2 additional exclusion criteria: PE leading to hemodynamic instability as described in the protocol

Note: Other Protocol Defined Inclusion/ Exclusion Criteria Apply

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: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Aktiv komparator: Apixaban

Administered per the protocol

Eksperimentel: REGN7508

Administered per the protocol

Andre navne:
  • cenvacibart

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Occurrence of Treatment-Emergent Adverse Events (TEAEs)
Tidsramme: Approximately 6 months

Part 1

Approximately 6 months
Severity of TEAEs
Tidsramme: Approximately 6 months

Part 1

Approximately 6 months
Time-to-first event of centrally adjudicated recurrent VTE [DVT (symptomatic or asymptomatic [proximal] or Non-fatal PE (symptomatic or asymptomatic [in a segmental or larger pulmonary artery] )or VTE-related death)]
Tidsramme: Up to approximately 3.5 years

Part 2

Up to approximately 3.5 years
Time-to-first event of centrally adjudicated International Society of Thrombosis and Hemostasis (ISTH)-defined major bleeding or Clinically Relevant Non-Major (CRNM) bleeding
Tidsramme: Up to approximately 3.5 years

Part 2

Up to approximately 3.5 years

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Percent inhibition of Factor XI functional Coagulant activity (FXI:C)
Tidsramme: Approximately 3 months

Part 1

Approximately 3 months
Fold change from baseline in activated Partial Thromboplastin Time (aPTT)
Tidsramme: Approximately 3 months

Part 1

Approximately 3 months
Functional REGN7508 concentration
Tidsramme: Approximately 3 months

Part 1

Approximately 3 months
Factor XI (FXI) concentration
Tidsramme: Approximately 3 months

Part 1

Approximately 3 months
Occurrence of Anti-Drug Antibody (ADA) to REGN7508
Tidsramme: Up to approximately 3.5 years

Part 1 and Part 2

Up to approximately 3.5 years
Magnitude of ADA to REGN7508
Tidsramme: Up to approximately 3.5 years

Part 1 and Part 2

Up to approximately 3.5 years
Time-to-first centrally adjudicated event of DVT (symptomatic or asymptomatic [proximal])
Tidsramme: Up to approximately 3.5 years

Part 2

Up to approximately 3.5 years
Time-to-first centrally adjudicated event of Non-fatal PE (symptomatic or asymptomatic [in a segmental or larger pulmonary artery])
Tidsramme: Up to approximately 3.5 years

Part 2

Up to approximately 3.5 years
Time-to-first centrally adjudicated event of VTE-related death
Tidsramme: Up to approximately 3.5 years

Part 2

Up to approximately 3.5 years
Time-to-first event of centrally adjudicated venous thromboembolic events other than DVT and PE
Tidsramme: Up to approximately 3.5 years

Part 2

Up to approximately 3.5 years
Time-to-first event of centrally adjudicated Arterial Thromboembolism (ATE)
Tidsramme: Up to approximately 3.5 years

Part 2

Up to approximately 3.5 years
Time-to-first event of centrally adjudicated recurrent VTE and bleeding events [DVT (symptomatic or asymptomatic [proximal] or Non-fatal PE (symptomatic or asymptomatic) or VTE-related death) or bleeding (ISTH-defined major bleeding or CRNM bleeding)]
Tidsramme: Up to approximately 3.5 years

Part 2

Up to approximately 3.5 years
Occurrence of TEAEs
Tidsramme: Up to approximately 3.5 years

Part 2

Up to approximately 3.5 years
Severity of TEAEs
Tidsramme: Up to 3.5 approximately years

Part 2

Up to 3.5 approximately years

Samarbejdspartnere og efterforskere

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

Sponsor

Efterforskere

  • Studieleder: Clinical Trial Management, Regeneron Pharmaceuticals

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)

26. august 2026

Primær færdiggørelse (Anslået)

18. juli 2031

Studieafslutning (Anslået)

18. juli 2031

Datoer for studieregistrering

Først indsendt

5. marts 2026

Først indsendt, der opfyldte QC-kriterier

19. marts 2026

Først opslået (Faktiske)

25. marts 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

5. november 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

3. november 2026

Sidst verificeret

1. november 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • R7508-CAT-2396
  • 2024-519299-16-00 (Ctis)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

All Individual Patient Data (IPD) that underlie publicly available results will be considered for sharing.

IPD-delingstidsramme

When Regeneron has:

  • received marketing authorization from major health authorities (e.g., FDA, European Medicines Agency (EMA), Pharmaceuticals and Medical Devices Agency (PMDA), etc.) for the product and indication or has globally discontinued development of the product for all indications on or after April 2020 and has no plans for future development
  • made the study results publicly available (e.g., scientific publication, scientific conference, clinical trial registry)
  • the legal authority to share the data, and
  • ensured the ability to protect participant privacy

IPD-delingsadgangskriterier

Qualified researchers can submit a proposal for access to individual patient or aggregate level data from a Regeneron-sponsored clinical trial through Vivli. Regeneron's Independent Research Request Evaluation Criteria can be found at: https://www.regeneron.com/sites/default/files/Regeneron-External-Data-Sharing-Policy-and-Independent-Research-Request-Evaluation-Criteria.pdf

IPD-deling Understøttende informationstype

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • ANALYTIC_CODE
  • CSR

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .