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En undersøgelse til evaluering af effekten af GDC-4198 alene og i kombination med kastet stridende versus abemaciclib og girestrant i deltagere med lokalt avanceret eller metastatisk østrogenreceptor-positiv (ER+), human epidermal vækstfaktor receptor-negativ (HER2-) brystkræftkræft (MoonROSE)

22. oktober 2026 opdateret af: Genentech, Inc.

En fase IB/II-multicenter, åben-mærket, randomiseret undersøgelse, der evaluerer sikkerheden, farmakokinetikken og aktiviteten af GDC-4198 alene og i kombination med kastetestrant i sammenligning med Abemaciclib og girestrant i deltagere med lokalt avanceret eller metastatisk østrogenreceptor-positiv, HER2-negativ brystkræft, der har tidligere fremskridt under eller efter en CDK4/6/6 6. Inhibitor

The purpose of this study is to assess the safety of GDC-4198 alone and in combination with giredestrant and also the efficacy of GDC-4198 + giredestrant versus abemaciclib + giredestrant in participants with locally advanced or metastatic ER+, HER2- breast cancer. The study consists of 2 phases: Phase Ib and Phase II. Phase Ib will evaluate the safety and pharmacokinetics (PK) of GDC-4198 alone and in combination with giredestrant. Phase II stage will compare the activity and safety of GDC-4198 and giredestrant with abemaciclib and giredestrant.

Participants from Study RGT-419B_01-101 (NCT05304962) who are experiencing clinical benefit with GDC-4198, as determined by the investigator, may enroll in this study and continue receiving GDC-4198 at their current dose level following closure of Study RGT-419B_01-101.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

285

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

  • Navn: Fastest response: use the inquiry form. https://www.gene.com/contact-us/submit-medical-inquiry

Undersøgelse Kontakt Backup

  • Navn: Reference Study ID Number: GO46021 https://forpatients.roche.com/ No attachments to email below.
  • Telefonnummer: 888-662-6728 (U.S. Only)
  • E-mail: global-roche-genentech-trials@gene.com

Studiesteder

    • New South Wales
      • Darlinghurst, New South Wales, Australien, 2010
        • Rekruttering
        • St Vincent's Hospital Sydney
    • South Australia
      • Adelaide, South Australia, Australien, 5000
        • Rekruttering
        • Cancer Research SA
      • São Paulo, Brasilien, 01246-000
        • Rekruttering
        • Instituto Do Câncer Do Estado de São Paulo Octávio Frias de Oliveira - ICESP
      • São Paulo, Brasilien, 01323-001
        • Rekruttering
        • Beneficencia Portuguesa de Sao Paulo
    • Pernambuco
      • Recife, Pernambuco, Brasilien, 50040-000
        • Rekruttering
        • Hospital do Cancer de Pernambuco - HCP
    • Rio Grande do Sul
      • Ijuí, Rio Grande do Sul, Brasilien, 98700-000
        • Rekruttering
        • ONCOSITE Centro de Pesquisa Clínica Em Oncologia
      • Porto Alegre, Rio Grande do Sul, Brasilien, 90560-030
        • Rekruttering
        • Hospital de Clinicas de Porto Alegre (HCPA) - PPDS
      • Porto Alegre, Rio Grande do Sul, Brasilien, 90035-074
        • Rekruttering
        • Irmandade Da Santa Casa de Misericordia de Porto Alegre
    • British Columbia
      • Vancouver, British Columbia, Canada, V5Z 4E6
        • Rekruttering
        • BC Cancer Vancouver Centre
    • Ontario
      • Toronto, Ontario, Canada, M5G 2M9
        • Rekruttering
        • Princess Margaret Hospital
    • Alabama
      • Huntsville, Alabama, Forenede Stater, 35805-2606
        • Rekruttering
        • Clearview Cancer Institute - Huntsville
    • Arizona
      • Tucson, Arizona, Forenede Stater, 85724-0001
        • Rekruttering
        • University of Arizona Cancer Center
    • California
      • Duarte, California, Forenede Stater, 91010
        • Rekruttering
        • City of Hope
      • Irvine, California, Forenede Stater, 92618
        • Rekruttering
        • City of Hope - Orange County Lennar Foundation Cancer Center
      • La Jolla, California, Forenede Stater, 92093-1503
        • Rekruttering
        • UC San Diego Moores Cancer Center
      • San Diego, California, Forenede Stater, 92103-1911
        • Rekruttering
        • University of California San Diego Medical Center
      • San Francisco, California, Forenede Stater, 94158
        • Rekruttering
        • UCSF Helen Diller Family CCC
    • Colorado
      • Aurora, Colorado, Forenede Stater, 80124-5316
        • Rekruttering
        • University of Colorado Cancer Center
    • Florida
      • Miami, Florida, Forenede Stater, 33136-1002
        • Rekruttering
        • Sylvester Comprehensive Cancer Center
      • Tampa, Florida, Forenede Stater, 33612
        • Rekruttering
        • Moffitt Cancer Center
    • Georgia
      • Atlanta, Georgia, Forenede Stater, 30322-1013
        • Rekruttering
        • Winship Cancer Institute of Emory University
    • Illinois
      • Zion, Illinois, Forenede Stater, 60099
        • Rekruttering
        • City of Hope® Cancer Center Chicago
    • Maine
      • Detroit, Maine, Forenede Stater, 48201-2013
        • Rekruttering
        • Barbara Ann Karmanos Cancer Institute
    • Maryland
      • Annapolis, Maryland, Forenede Stater, 21401
        • Rekruttering
        • Maryland Oncology Hematology - Annapolis
    • Massachusetts
      • Boston, Massachusetts, Forenede Stater, 02114
        • Rekruttering
        • Massachusetts General Hospital
    • Missouri
      • St Louis, Missouri, Forenede Stater, 63110-1010
        • Rekruttering
        • Washington University Siteman Cancer Center
    • New Jersey
      • New Brunswick, New Jersey, Forenede Stater, 08901-1914
        • Rekruttering
        • Rutgers Cancer Institute of New Jersey
    • New York
      • East Patchogue, New York, Forenede Stater, 11772
        • Rekruttering
        • New York Cancer & Blood Specialists
      • The Bronx, New York, Forenede Stater, 10461
        • Rekruttering
        • Montefiore Einstein Cancer Center
    • North Carolina
      • Charlotte, North Carolina, Forenede Stater, 28204
        • Rekruttering
        • Levine Cancer Institute
      • Charlotte, North Carolina, Forenede Stater, 28204
        • Rekruttering
        • Novant Health Cancer Institute
      • Winston-Salem, North Carolina, Forenede Stater, 27103-3224
        • Rekruttering
        • Novant Health Oncology Specialists
    • Ohio
      • Canton, Ohio, Forenede Stater, 44708
        • Rekruttering
        • Cleveland Clinic Mercy Hospital
      • Cleveland, Ohio, Forenede Stater, 44195-0001
        • Rekruttering
        • Cleveland Clinic Taussig Cancer Center
    • Oregon
      • Eugene, Oregon, Forenede Stater, 97401
        • Rekruttering
        • Oncology Associates of Oregon, P.C
    • Pennsylvania
      • Hershey, Pennsylvania, Forenede Stater, 17033-2360
        • Rekruttering
        • Penn State Health Milton S. Hershey Medical Center
      • Philadelphia, Pennsylvania, Forenede Stater, 19104
        • Rekruttering
        • University of Pennsylvania - Abramson Cancer Center
      • Pittsburgh, Pennsylvania, Forenede Stater, 15213-3108
        • Rekruttering
        • UPMC - Hillman Cancer Center
    • Tennessee
      • Mount Juliet, Tennessee, Forenede Stater, 37122
        • Rekruttering
        • Tennesse Oncology - Mt. Juliet Clinic
      • Nashville, Tennessee, Forenede Stater, 37204-3609
        • Rekruttering
        • Vanderbilt Breast Center at One Hundred Oaks
    • Texas
      • Dallas, Texas, Forenede Stater, 75246-2003
        • Rekruttering
        • Texas Oncology (Worth) - USOR
    • Utah
      • Salt Lake City, Utah, Forenede Stater, 84013
        • Rekruttering
        • University of Utah Huntsman Cancer Institute
    • Virginia
      • Norfolk, Virginia, Forenede Stater, 23502-2800
        • Rekruttering
        • Virginia Oncology Associates (Norfolk) - USOR
      • Caen, Frankrig, 14076
        • Rekruttering
        • Centre Francois Baclesse
      • Lille, Frankrig, 59020
        • Rekruttering
        • Centre Oscar Lambret
      • Rennes, Frankrig, 35042
        • Rekruttering
        • Centre Eugene Marquis
    • Champagne-Ardenne
      • Reims, Champagne-Ardenne, Frankrig, 51100
        • Rekruttering
        • Institut Jean Godinot
    • Val-de-Marne
      • Villejuif, Val-de-Marne, Frankrig, 94805
        • Rekruttering
        • Gustave Roussy
    • Emilia-Romagna
      • Bologna, Emilia-Romagna, Italien, 40138
        • Rekruttering
        • Azienda Ospedaliero Universitaria Di Bologna_Policlinico S Orsola Malpighi-Via Albertoni
      • Meldola, Emilia-Romagna, Italien, 47014
        • Rekruttering
        • Istituto Romagnolo per lo Studio dei Tumori Dino Amadori - IRST S.r.l - PPDS
    • Lombardy
      • Bergamo, Lombardy, Italien, 24127
        • Rekruttering
        • Asst Papa Giovanni XXIII
      • Brescia, Lombardy, Italien, 25123
        • Rekruttering
        • ASST degli Spedali Civili di Brescia - Spedali Civili di Brescia
      • Milan, Lombardy, Italien, 20132
        • Rekruttering
        • Ospedale San Raffaele S.r.l. - PPDS
      • Fuzhou, Kina, 350014
        • Rekruttering
        • Fujian Cancer Hospital
      • Nanning, Kina, 530201
        • Rekruttering
        • Guangxi Cancer Hospital of Guangxi Medical University
    • SD
      • Jinan, SD, Kina, 250117
        • Rekruttering
        • Shandong Cancer Hospital
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, Kina, 201321
        • Rekruttering
        • Fudan University Shanghai Cancer Center - Pudong Campus
    • Tianjin Municipality
      • Tianjin, Tianjin Municipality, Kina, 300060
        • Rekruttering
        • Tianjin Medical University Cancer Institute & Hospital
      • Barcelona, Spanien, 08035
        • Rekruttering
        • Instituto de Investigacion Oncologica Vall dHebron (VHIO) - EPON
      • Madrid, Spanien, 28041
        • Rekruttering
        • Hospital Universitario 12 de Octubre
      • Madrid, Spanien, 28007
        • Rekruttering
        • Hospital Beata Maria Ana
      • Madrid, Spanien, 28007
        • Rekruttering
        • Hospital General Universitario Gregorio Maranon
      • Valencia, Spanien, 46010
        • Rekruttering
        • Hospital Clinico Universitario de Valencia
    • Barcelona
      • L'Hospitalet de Llobregat, Barcelona, Spanien, 08908
        • Rekruttering
        • ICO l?Hospitalet ? Hospital Duran i Reynals
      • Seongnam-si, Sydkorea, 13620
        • Rekruttering
        • Seoul National University Bundang Hospital
      • Seoul, Sydkorea, 03080
        • Rekruttering
        • Seoul National University Hospital
      • Seoul, Sydkorea, 06351
        • Rekruttering
        • Samsung Medical Center
      • Seoul, Sydkorea, 6591
        • Rekruttering
        • The Catholic University of Korea, Seoul St. Mary's Hospital
      • Seoul, Sydkorea, 3722
        • Rekruttering
        • Severance Hospital, Yonsei University Health System
      • Seoul, Sydkorea, 05505
        • Rekruttering
        • Asan Medical Center.
    • Seoul Teugbyeolsi
      • Seoul, Seoul Teugbyeolsi, Sydkorea, 6273
        • Rekruttering
        • Gangnam Severance Hospital, Yonsei University Health System
      • Dresden, Tyskland, 01307
        • Rekruttering
        • Universitaetsklinikum Carl Gustav Carus an der TU Dresden
      • Hamburg, Tyskland, 20251
        • Rekruttering
        • Universitatsklinikum Hamburg-Eppendorf
      • Heidelberg, Tyskland, 69120
        • Rekruttering
        • Uniklinikum Heidelberg
    • Baden-Wurttemberg
      • Tübingen, Baden-Wurttemberg, Tyskland, 72076
        • Rekruttering
        • Universitatsklinikum Tubingen
    • Lower Saxony
      • Hanover, Lower Saxony, Tyskland, 30625
        • Rekruttering
        • Medizinische Hochschule Hannover
    • North Rhine-Westphalia
      • Essen, North Rhine-Westphalia, Tyskland, 45136
        • Rekruttering
        • KEM - Evang. Huyssens-Stiftung Essen-Huttrop

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

Inclusion Criteria:

  • Histologically and/or cytologically confirmed adenocarcinoma of the breast that is locally advanced or metastatic.
  • Previously documented ER+ and HER2- tumor according to American Society of Clinical Oncology (ASCO)/ College of American Pathologists (CAP) or European Society of Medical Oncology (ESMO) guidelines or any national guidelines with criteria conforming to ASCO/CAP or ESMO guidelines.
  • Disease progression during or after treatment with an approved cyclin-dependent kinase 4/6 (CDK4/6) inhibitor and approved endocrine therapy (ET) in the locally advanced or metastatic setting.
  • Measurable or non-measurable evaluable, disease per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1).
  • Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1.
  • Life expectancy >= 6 months.
  • Current participant enrolled in Study RGT-419B_01-101 who is experiencing clinical benefit from GDC-4198, as determined by the investigator, at the time of consent and enrollment in this study.

Exclusion Criteria:

  • Advanced, symptomatic, visceral spread that is at risk of life-threatening complications in the short term appropriate for treatment with cytotoxic chemotherapy at time of entry into the study, as per national or local treatment guidelines.
  • Have received more than one-line of therapy for locally advanced or metastatic disease.
  • Have received prior chemotherapy for metastatic breast cancer.
  • Treatment with an approved oral ET within 7 days prior to initiation of study drug; treatment with fulvestrant or an approved CDK4/6 inhibitor within 21 days prior to initiation of study drug.
  • Malabsorption condition or other gastrointestinal (GI) conditions/surgeries that the investigator assesses may significantly interfere with enteral absorption
  • History of malignancy within 3 years prior to screening, except for cancer under investigation in this study and malignancies with a negligible risk of metastasis or death.
  • Known allergy or hypersensitivity to any component of the study treatments.

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: Sekventiel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Phase Ib: Dose-Finding Stage

Participants will receive GDC-4198 as monotherapy and in combination with giredestrant, 30 milligrams (mg), orally, daily, as per a pre-defined dosing regimen during each cycle until unacceptable toxicity or disease progression and/or loss of clinical benefit. (1 cycle=28 days). Participants from study RGT-419B_01-101 will continue receiving GDC-4198 at their current dose level following closure of study RGT-419B_01-101.

GDC-4198 will be administered orally.

Andre navne:
  • RGT-419B
  • RO7840734

Giredestrant will be administered orally.

Andre navne:
  • GDC-9545
  • RO7197597
Eksperimentel: Phase II: Arm A

Participants will receive GDC-4198, higher dose, in combination with giredestrant, 30 mg, orally, daily, as per a pre-defined dosing regimen during each cycle until unacceptable toxicity or disease progression and/or loss of clinical benefit. (1 cycle=28 days).

GDC-4198 will be administered orally.

Andre navne:
  • RGT-419B
  • RO7840734

Giredestrant will be administered orally.

Andre navne:
  • GDC-9545
  • RO7197597
Eksperimentel: Phase II: Arm B

Participants will receive GDC-4198, lower dose, in combination with giredestrant, 30 mg, orally, daily, as per a pre-defined dosing regimen during each cycle until unacceptable toxicity or disease progression and/or loss of clinical benefit. (1 cycle=28 days).

GDC-4198 will be administered orally.

Andre navne:
  • RGT-419B
  • RO7840734

Giredestrant will be administered orally.

Andre navne:
  • GDC-9545
  • RO7197597
Eksperimentel: Phase II: Arm C

Participants will receive abemaciclib, 150 mg twice daily, in combination with giredestrant, 30 mg, orally, daily, as per a pre-defined dosing regimen during each cycle until unacceptable toxicity or disease progression and/or loss of clinical benefit. (1 cycle=28 days).

Giredestrant will be administered orally.

Andre navne:
  • GDC-9545
  • RO7197597

Abemaciclib will be administered orally.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Fase IB: Antal deltagere med dosisbegrænsende toksicitet (DLTS)
Tidsramme: Fra dag 1 til dag 28 af cyklus 1 (1 cyklus = 28 dage)
Fra dag 1 til dag 28 af cyklus 1 (1 cyklus = 28 dage)
Fase II: Progression-fri overlevelse (PFS)
Tidsramme: Op til 36 måneder
Op til 36 måneder
Phase Ib: Incidence and Severity of Adverse Events (AEs)
Tidsramme: Up to 36 months

Severity of AEs determined according to the CTCAE v5.0 grading scale

Up to 36 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Fase IB: Objektiv responsrate (ORR)
Tidsramme: Op til 36 måneder
Op til 36 måneder
Fase IB: Clinical Benefit Rate (CBR)
Tidsramme: Op til 36 måneder
Op til 36 måneder
Fase II: Orr
Tidsramme: Op til 36 måneder
Op til 36 måneder
Fase II: Varighed af respons (DOR)
Tidsramme: Op til 36 måneder
Op til 36 måneder
Fase II: CBR
Tidsramme: Op til 36 måneder
Op til 36 måneder
Fase II: Samlet overlevelse (OS)
Tidsramme: Op til 36 måneder
Op til 36 måneder
Fase II: OS -sats efter 6 måneder og 12 måneder
Tidsramme: Måned 6, måned 12
Måned 6, måned 12
Fase II: PFS -sats efter 6 måneder og 12 måneder
Tidsramme: Måned 6, måned 12
Måned 6, måned 12
Fase II: Plasmakoncentration af GDC-4198
Tidsramme: Op til 36 måneder
Op til 36 måneder
Fase II: Anbefalet dosis af GDC-4198
Tidsramme: Op til 36 måneder
Op til 36 måneder
Phase II: Incidence and Severity of Adverse Events (AEs)
Tidsramme: Up to 36 months

Severity of AEs determined according to the CTCAE v5.0 grading scale

Up to 36 months

Samarbejdspartnere og efterforskere

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

Sponsor

Samarbejdspartnere

Efterforskere

  • Studieleder: Clinical Trials, Hoffmann-La Roche

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

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)

7. oktober 2025

Primær færdiggørelse (Anslået)

31. august 2028

Studieafslutning (Anslået)

31. august 2028

Datoer for studieregistrering

Først indsendt

31. juli 2025

Først indsendt, der opfyldte QC-kriterier

31. juli 2025

Først opslået (Faktiske)

3. august 2025

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

26. oktober 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

22. oktober 2026

Sidst verificeret

1. oktober 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • GO46021
  • 2025-521128-31-00 (Ctis)
  • 2025 (U.S. NIH-bevilling/kontrakt)

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

JA

IPD-planbeskrivelse

For eligible studies, qualified researchers may request access to individual patient level clinical data. See Roche's commitment to transparency of clinical study information here: https://go.roche.com/data_sharing

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 .