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Study of Petosemtamab Plus Chemotherapy Versus Cetuximab Plus Chemotherapy in RAS and BRAF Wild-type, Unresectable or Metastatic, Left-sided Colorectal Cancer (LiGeR-CRC1)

8. September 2026 aktualisiert von: Genmab

A Randomized, Open-label, Phase 3 Trial of Petosemtamab in Combination With mFOLFOX6 or FOLFIRI Versus Cetuximab in Combination With mFOLFOX6 or FOLFIRI as First-line Treatment for Participants With RAS and BRAF Wild-type, Unresectable or Metastatic, Left-sided Colorectal Cancer

The purpose of this trial is to evaluate how well petosemtamab in combination with chemotherapy works against colorectal cancer located on the left side of the colon that cannot be safely removed by surgery or has spread to other parts of the body.

Participants will receive either petosemtamab + doctor's choice of chemotherapy (mFOLFOX6 or FOLFIRI) or standard-of-care cetuximab + doctor's choice of chemotherapy (mFOLFOX6 or FOLFIRI). No participants will be given placebo.

The treatment duration will be different for every participant. If a participant's cancer stays the same or gets better, and there are not any serious problems, participants can keep getting study treatment for as long as the study is open.

Participants will be asked to attend 2 visits at the study clinic for each cycle (duration of cycle is 4 weeks). During visits, there will be various tests (such as blood draws) and procedures (such as imaging) to monitor whether the study treatment is safe and effective. The overall study duration (including screening, treatment, and follow-up) will be different for every participant.

Studienübersicht

Status

Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This Phase 3, randomized, open-label, global trial is designed to assess the efficacy and safety of petosemtamab plus investigator's choice (IC) chemotherapy (fluorouracil + leucovorin (calcium folinate) + oxaliplatin [mFOLFOX6] or fluorouracil + leucovorin (calcium folinate) + irinotecan [FOLFIRI]) versus standard of care (SOC) (ie, cetuximab + IC chemotherapy [mFOLFOX6 or FOLFIRI]) as 1L therapy in participants with unresectable or metastatic left-sided colorectal cancer.

Studientyp

Interventionell

Einschreibung (Geschätzt)

960

Phase

  • Phase 3

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studienorte

    • PR
      • Manati, PR, Puerto Rico, 00674
        • Rekrutierung
        • PanOncology
    • Georgia
      • Savannah, Georgia, Vereinigte Staaten, 31405
        • Rekrutierung
        • Low Country Cancer Care Associates_Savannah_1
      • Warner Robins, Georgia, Vereinigte Staaten, 31088
        • Rekrutierung
        • Central Georgia Cancer Care - Warner Robins Office
    • Indiana
      • Indianapolis, Indiana, Vereinigte Staaten, 46260
        • Rekrutierung
        • Hematology-Oncology of Indiana, P.C.
    • Missouri
      • Springfield, Missouri, Vereinigte Staaten, 65807
        • Rekrutierung
        • Oncology Hematology Associates - Springfield_Springfield_2
    • Washington
      • Olympia, Washington, Vereinigte Staaten, 98502
        • Rekrutierung
        • Vista Oncology

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

Key Inclusion Criteria:

  • Histologically or cytologically confirmed left-sided colorectal adenocarcinoma that is unresectable or metastatic.
  • Must have documented KRAS and NRAS wild type (wt) colorectal cancer (CRC), as determined by medical record of results from local testing or as assessed by central testing. Local testing must have been conducted in accordance with local guidelines using an Food and Drug Administration (FDA)-approved test or a laboratory-developed test that is validated in a Clinical Laboratory Improvement Amendments (CLIA)-certified laboratory (sites in the United States) or an accredited local laboratory (sites outside of the United States). Next-generation sequencing (NGS)-based test results from tumor tissue are required for determining eligibility. Polymerase chain reaction (PCR)-based tests, sanger sequencing, or pyrosequencing test results are not allowed.
  • Has not received any prior systemic therapy for unresectable or metastatic CRC.
  • Must be eligible for treatment with mFOLFOX6 (if assigned to receive mFOLFOX6) or FOLFIRI (if assigned to receive FOLFIRI) according to local regulatory approvals and SOC guidelines.

Key Exclusion Criteria:

  • BRAF mutation, and/or microsatellite instability-high (MSI-H)/deficient mismatch repair (dMMR) and/or protocol specified tumor status as documented by local test results in the medical record or from central testing or known documented activating HRAS mutation identified prior to enrollment from local testing results in the medical record, if available.
  • Prior exposure to any agents that target epidermal growth factor receptor (EGFR) (including but not limited to protein products, monoclonal antibodies, tyrosine kinase inhibitors, or antisense oligonucleotide therapy).
  • Known complete dihydropyrimidine dehydrogenase (DPD) deficiency or known homozygous/compound heterozygous dihydropyrimidine dehydrogenase gene (DPYD) variants associated with complete loss of DPD activity. Testing for DPD deficiency should be performed per local guidelines.
  • For a participant who is to receive FOLFIRI: known to be homozygous for the UGT1A1*28 or *6 alleles or compound or double heterozygous for the UGT1A1*28 and *6 alleles. Testing for UGT1A1 should be done in accordance with local guidelines.
  • Participants with non-colorectal adenocarcinomatous disease.

Note: Other protocol-defined Inclusion and Exclusion criteria may apply.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Petosemtamab + IC Chemotherapy
Participants will receive petosemtamab and IC chemotherapy (mFOLFOX6 or FOLFIRI).
Intravenous infusion
Fluorouracil + leucovorin (calcium folinate) + irinotecan via intravenous infusion.
Fluorouracil + leucovorin (calcium folinate) + oxaliplatin via intravenous infusion.
Aktiver Komparator: Cetuximab + IC Chemotherapy
Participants will receive cetuximab + IC chemotherapy (mFOLFOX6 or FOLFIRI).
Fluorouracil + leucovorin (calcium folinate) + irinotecan via intravenous infusion.
Fluorouracil + leucovorin (calcium folinate) + oxaliplatin via intravenous infusion.
Intravenous infusion

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Zeitfenster
Progression-free Survival (PFS) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 as Assessed by Blinded Independent Central Review (BICR)
Zeitfenster: Up to approximately 35 months
Up to approximately 35 months
Objective Response Rate (ORR) per RECIST v1.1 as Assessed by BICR
Zeitfenster: Up to approximately 35 months
Up to approximately 35 months

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Zeitfenster
Overall Survival (OS)
Zeitfenster: Up to approximately 62 months
Up to approximately 62 months
Duration of Response (DOR) per RECIST v1.1 as Assessed by BICR
Zeitfenster: Up to approximately 62 months
Up to approximately 62 months
Disease Control Rate (DCR) per RECIST v1.1 as Assessed by BICR
Zeitfenster: Up to approximately 62 months
Up to approximately 62 months
Progression-free Survival after First Subsequent Therapy (PFS2)
Zeitfenster: Up to approximately 62 months
Up to approximately 62 months
Curative Resection (R0) Rate
Zeitfenster: Up to approximately 62 months
Up to approximately 62 months
Number of Participants with Adverse Events (AEs)
Zeitfenster: Up to approximately 62 months
Up to approximately 62 months
Change from Baseline in Symptoms and Functioning, as Measured by European Organisation for Research and Treatment of Cancer (EORTC) Quality-of-life Questionnaire (QLQ)-F17
Zeitfenster: Baseline up to approximately 62 months
Baseline up to approximately 62 months
Change from Baseline in Symptoms and Functioning, as Measured by EORTC QLQ-CR29
Zeitfenster: Baseline up to approximately 62 months
Baseline up to approximately 62 months
Time to Worsening in Symptoms and Functioning, as Measured by EORTC QLQ-F17
Zeitfenster: Up to approximately 62 months
Up to approximately 62 months
Time to Worsening in Symptoms and Functioning, as Measured by EORTC QLQ-CR29
Zeitfenster: Up to approximately 62 months
Up to approximately 62 months
Overall Side Effect Burden, as Measured by EORTC Item 168
Zeitfenster: Up to approximately 62 months
Up to approximately 62 months

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Ermittler

  • Studienleiter: Study Official, Genmab

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

11. August 2026

Primärer Abschluss (Geschätzt)

1. Juli 2029

Studienabschluss (Geschätzt)

1. September 2031

Studienanmeldedaten

Zuerst eingereicht

9. Juli 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

9. Juli 2026

Zuerst gepostet (Tatsächlich)

14. Juli 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

9. September 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

8. September 2026

Zuletzt verifiziert

1. September 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • GCT1158-08
  • 2026-525883-17 (Andere Kennung: EU CT Number)

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Ja

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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