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    Phase III: Giredestrant in Early Breast Cancer (novERA Breast Cancer)

    Clinical Trial Overview Inclusion and Exclusion Criteria Study Site Locations Enrollment and Resources
    Clinical Trial Overview

    Clinical Trial Overview

    Recruiting

    A Phase IIIb, Single-Arm, Open-Label Study Evaluating Adherence, Tolerability, and Patient Reported Outcomes (PRO) of Giredestrant in Patients With ER+/HER2- Early Breast Cancer Who Are Intolerant to Adjuvant Aromatase Inhibitor Therapy

    Objective

    The purpose of this study is to understand treatment adherence and patient-reported outcomes of switching to giredestrant due to prior aromatase inhibitor (AI) intolerance. Giredestrant will be administered as adjuvant endocrine therapy for participants with low-, medium-, and high-risk, Stage I-III, histologically confirmed, estrogen receptor positive (ER+), human epidermal growth factor receptor 2 negative (HER2-), early breast cancer (eBC), as defined by the investigator. Participants will enroll if considered to be intolerant to a prior adjuvant AI therapy.

    Primary Endpoints

    • Incidence of Participants Who Have Discontinued Giredestrant for Any Reason at 12 Months
    • Incidence and Severity of Adverse Events, with Severity Determined According to the National Cancer Institute Common Terminology Criteria of Adverse Events, version 6.0 (NCI CTCAE v6.0)

    Secondary Endpoints

    • Percentage of Participants Achieving an Improvement in Individual Endocrine Therapy-specific Symptoms at 6 and 12 Months, Using the FACT-ES Questionnaire
    • Percentage of Participants Categorized as Improved, Stable, or Worsening in Endocrine Therapy-specific Symptom Burden at 6 and 12 Months, Using the FACT-ES Questionnaire
    • Percentage of Participants Categorized as Improved, Stable, or Worsened in Pain-related Burden at 6 and 12 Months, Using the BPI-SF Questionnaire
    • Percentage of Participants Achieving an Improvement in Global Treatment Bother at 6 and 12 Months, Using the FACT-ES Questionnaire's GP5 Item
    • Percentage of Participants Categorized as Improved, Stable, or Worsened in Domain-specific Physical Well-Being at 6 and 12 Months, Using the FACT-ES Questionnaire
    • Percentage of Participants Categorized as Improved, Stable, or Worsened in Domain-specific Functional Well-Being at 6 and 12 Months, Using the FACT-ES Questionnaire
    • Percentage of Participants Categorized as Improved, Stable, or Worsened in Global Health-Related Quality of Life (HRQoL) at 6 and 12 Months, Using the FACT-ES Questionnaire

    Giredestrant

    Other names: RG6171; RO7197597; GDC-9545

    Modality: Selective estrogen receptor degrader/downregulator (SERD)

    Disease/Condition: Early Breast Cancer

    View Molecule

    ADDITIONAL RESOURCES

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    View Related Clinical Trials

    ID: NCT07541079

    View on ClinicalTrials.gov
    Inclusion and Exclusion Criteria

    Inclusion and Exclusion Criteria

    Inclusion Criteria
    • Considered appropriate for treatment with endocrine therapy (ET)
    • Histologically confirmed diagnosis of ER+/HER2-, Stage I-III (low-/medium-/high-risk) early breast cancer (eBC)
    • Documented ER+ tumor according to American Society of Clinical Oncology (ASCO)/College of American Pathologists (CAP), defined as ≥1% of tumor cells stained positive
    • Documented HER2- tumor according to ASCO/CAP
    • Postmenopausal females at the time of signing the Informed Consent Form
    • Documented use of a prior adjuvant aromatase inhibitor (AI) (i.e., anastrozole, exemestane, or letrozole) for a total of ≥6 months
    • Documented use of an adjuvant AI (i.e., anastrozole, exemestane, or letrozole) for the consecutive ≥3 months immediately prior to consent
    • Participant and investigator agree that current symptoms on AI are intolerable and warrant a switch in therapy to attempt sustained treatment
    • Documented Grade 2 or 3 adverse events, per NCI CTCAE v6.0, determined by the investigator to be associated with AI therapy's intolerance
    • Participant and investigator planning the first switch from an AI
    • Has completed the following: (neo)adjuvant chemotherapy (if administered), definitive surgery of primary breast tumor(s) and/or axillary lymph nodes dissection (ALND) and/or sentinel lymph node biopsy (SLNB) and/or radiotherapy
    • Eastern Cooperative Oncology Group Performance (ECOG) Performance Status 0 or 1
    Exclusion Criteria
    • Participation within 6 months before enrollment in any other clinical study involving an investigational adjuvant treatment including anti-cancer agents
    • Diagnosis of rheumatoid arthritis, psoriatic arthritis, or other inflammatory connective tissue disease
    • Any prior fulvestrant or any oral selective estrogen receptor degraders (SERDs)
    • Have active cardiac disease or history of cardiac dysfunction
    • Have clinically significant liver disease consistent with Child-Pugh Class B or C, including active hepatitis (e.g., hepatitis B virus [HBV] or hepatitis C virus [HCV]), current alcohol abuse, cirrhosis, or positive test for viral hepatitis
    • Treatment with strong CYP3A inhibitors or inducers within 14 days or 5 drug elimination half-lives (whichever is longer) prior to initiation of study treatment
    • Have had any serious medical condition or abnormality in clinical laboratory tests that, in the investigator's judgment, precludes an individual's safe participation in and completion of the study

    ADDITIONAL RESOURCES

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    Submit Medical Inquiry
    View Related Clinical Trials

    ID: NCT07541079

    View on ClinicalTrials.gov
    Study Site Locations

    Study Site Locations

    Explore the map to find active sites closest to your location or search by your ZIP code.

    ADDITIONAL RESOURCES

    Contact an MSL
    Submit Medical Inquiry
    View Related Clinical Trials

    ID: NCT07541079

    View on ClinicalTrials.gov

    1 Results

      Enrollment and Resources

      Enrollment & Resources

      Enrollment

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      ADDITIONAL RESOURCES

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      ID: NCT07541079

      View on ClinicalTrials.gov

      Resources

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      Information is consistent with ClinicalTrials.gov as of July 31, 2026. Products under investigation have not been approved for use outside of the clinical trial setting. This information is presented only for the purposes of providing an overview of clinical trials and should not be construed as a recommendation for use of any product for unapproved purposes.

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      • AD
        Alzheimer's disease

      • ABC
        advanced breast cancer

      • bADLs
        Basic activities of daily living

      • ISLT
        International Shopping List Test

      • MCI
        Mild cognitive impairment

      • CV
        coefficient of variation

      • HEX
        cell hexagonality

      • nAMD
        neurovascular age-related macular degeneration

      • PDS
        Port Delivery System

      • Q24W
        once every 24 weeks

      • BMI
        Body mass index

      • HbA1c
        hemoglobin A1C

      • HOMA-IR
        Homeostasis Model Assessment of Insulin Resistance

      • NLM
        National Library of Medicine

      • QUICKI
        Quantitative Insulin Sensitivity Check Index

      • SGLT-2
        sodium-glucose cotransporter-2

      • SMBG
        Self-Monitored Blood Glucose

      • T1DM
        Type 1 Diabetes Mellitus

      • T2DM
        Type 2 diabetes mellitus

      • AE
        adverse events

      • AESI
        Adverse Events of Special Interest

      • MDD
        major depressive disorder

      • PHQ-9
        Patient Health Questionnaire-9

      • SAE
        serious adverse events

      • ABR
        Annualized Bleed Rate

      • CBR
        clinical benefit rate

      • CDK4/6i
        cyclin-dependent kinase 4 and 6 inhibitor

      • CNS
        central nervous system

      • CR
        complete response

      • DoR
        duration of response

      • ER
        estrogen receptor

      • HER2
        human epidermal growth factor receptor 2

      • HER2-
        human epidermal growth factor receptor 2-negative

      • HR
        hormone receptor

      • HR+
        hormone receptor-positive

      • HRQoL
        health-related quality of life

      • mut
        mutated

      • NIS
        non-interventional study

      • ORR
        objective response rate

      • OS
        overall survival

      • PFS
        progression-free-survival

      • PIK3CA
        phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha

      • PIK3CAm
        PIK3CA-mutated

      • PK
        pharmacokinetics

      • PROs
        patient-reported outcomes

      • SD
        stable disease

      • SoC
        standard of care

      • VWD
        von Willebrand disease

      • WHO
        World Health Organization

      • T2D
        Type 2 diabetes

      • T1D
        Type 1 Diabetes

      • ADA
        anti-drug antibody

      • DXA
        Dual-energy X-ray Absorptiometry

      • ASCVD
        atherosclerotic cardiovascular disease

      • FGF21
        fibroblast growth factor 21

      • SHTG
        severe hypertriglyceridemia

      • TG
        triglycerides

      • MASH
        metabolic dysfunction-associated steatohepatitis

      • NAFLD
        non-alcoholic fatty liver disease

      • NAS
        NAFLD Activity Score

      • NASH
        nonalcoholic steatohepatitis

      • pmMS
        partial modified Mayo

      • CD
        Crohn's disease

      • CMV
        cytomegalovirus

      • HIV
        human immunodeficiency virus

      • HBV
        Hepatitis B

      • HCV
        Hepatitis C

      • TB
        tuberculosis

      • UC
        ulcerative colitis

      • TL1A
        tumor necrosis factor-like ligand 1A

      • mMS
        modified Mayo Score

      • APS
        average daily abdominal pain scores in the past week

      • CDAI
        Crohn’s Disease Activity Index

      • IBDQ
        Inflammatory Bowel Disease Questionnaire

      • SF
        stool frequency subscore

      • PBO
        Placebo

      • EASI
        Eczema Area and Severity Index

      • IGA
        Investigator Global Assessment

      • NRS
        Numerical Rating Scale

      • IM
        intramuscular

      • IL
        intralesional

      • PDE-4
        Phosphodiesterase-4

      • ACE
        angiotensin-converting enzyme

      • ARBs
        angiotensin II receptor blockers

      • ASO
        Antisense Oligonucleotide

      • CKD-EPI
        Chronic Kidney Disease Epidemiology Collaboration

      • eGFR
        Estimated Glomerular Filtration Rate

      • FACIT-F
        Functional Assessment of Chronic Illness Therapy-Fatigue subscale

      • g/day
        gram per day

      • g/g
        gram per gram

      • GIP
        Glucose-dependent Insulinotropic Polypeptide

      • GLP-1
        Glucagon-like Peptide-1

      • IgAN
        IgA nephropathy

      • mg/day
        milligrams per day

      • TEAEs
        Treatment-Emergent Adverse Events

      • UPCR
        Urine Protein-to-Creatinine Ratio

      • AEs
        Adverse events

      • ALT
        Alanine aminotransferase

      • AST
        Aspartate aminotransferase

      • C-SSRS
        Columbia-Suicide Severity Rating Scale

      • DMT
        Disease-modifying therapy

      • ECG
        Electrocardiogram

      • EDSS
        Expanded Disability Status Scale

      • Gd
        Gadolinium

      • IPMSSG
        International Pediatric Multiple Sclerosis Study Group

      • MRI
        Magnetic resonance imaging

      • MS
        Multiple sclerosis

      • PD
        Pharmacodynamic

      • PPMS
        Primary progressive multiple sclerosis

      • RMS
        Relapsing multiple sclerosis

      • SI
        Suicidal ideation

      • SPMS
        Secondary progressive multiple sclerosis

      • CYP3A4
        cytochrome-p450-3a4

      • ADAS-Cog-13
        Alzheimer's Disease Assessment Scale-Cognition 13

      • ADAs
        Anti-drug antibodies

      • ADCS-ADL
        Alzheimer's Disease Cooperative Study Activities of Daily Living Inventory

      • ARIA
        Amyloid-related imaging abnormalities

      • CDR-GS
        Clinical Dementia Rating, Global Score

      • CDR-SB
        Clinical Dementia Rating, Sum of Boxes

      • CSF
        Cerebrospinal fluid

      • GFAP
        Glial fibrillar acidic protein

      • iADRS
        Integrated Alzheimer's Disease Rating Scale

      • IRR
        Infusion-related reactions

      • MMSE
        Mini-Mental State Examination

      • PET
        Positron emission tomography

      • RBANS DMI
        Repeatable Battery for the Assessment of Neuropsychological Status Delayed Memory Index

      • EORTC QLQ-C30
        European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire

      • PRO-CTCAE
        Patient-Reported Outcomes Common Terminology Criteria for Adverse Events

      • TTCD
        Time to Confirmed Deterioration

      • AJCC
        American Joint Committee on Cancer Staging System

      • ECOG
        Eastern Cooperative Oncology Group

      • FFPE
        formalin-fixed, paraffin-embedded

      • RECIST
        Response Evaluation Criteria in Solid Tumors

      • NSCLC
        non-small cell lung cancer

      • BICR
        blinded independent central review

      • CD137
        Cluster of Differentiation 137

      • EORTC QLQ-LC13
        European Organisation for Research and Treatment of Cancer Quality-of-Life Questionnaire-Supplemental Lung Cancer Module

      • KRAS G12C
        Kirsten rat sarcoma viral oncogene homolog G12C

      • PD-L1
        Programmed death-ligand 1

      • RAS
        RAt Sarcoma

      • RT
        Radiation therapy

      • DOCR
        duration of complete response

      • DFS
        disease-free survival

      • EFSeff
        event-free survival efficacy causes

      • FACT-Lym LymS
        lymphoma subscale within the functional assessment of cancer therapy-Lymphoma questionnaire

      • IPI
        international prognostic index

      • IRF
        Independent Review Facility

      • Pola-R-CHP
        polatuzumab vedotin plus rituximab, cyclophosphamide, doxorubicin, and prednisone

      • LBCL
        large B-cell lymphoma

      • PROMIS-29
        Patient-Reported Outcomes Measurement Information System-29

      • ESR1nmd
        ESR1 no-mutation-detected

      • IV
        intravenous

      • II
        2

      • ECD
        endothelial cell density

      • III
        3

      • SC
        Subcutaneous

      +