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    Summary
    EudraCT Number:2022-001087-10
    Sponsor's Protocol Code Number:ELA-0121
    National Competent Authority:Spain - AEMPS
    Clinical Trial Type:EEA CTA
    Trial Status:Ongoing
    Date on which this record was first entered in the EudraCT database:2022-07-06
    Trial results
    Index
    A. PROTOCOL INFORMATION
    B. SPONSOR INFORMATION
    C. APPLICANT IDENTIFICATION
    D. IMP IDENTIFICATION
    D.8 INFORMATION ON PLACEBO
    E. GENERAL INFORMATION ON THE TRIAL
    F. POPULATION OF TRIAL SUBJECTS
    G. INVESTIGATOR NETWORKS TO BE INVOLVED IN THE TRIAL
    N. REVIEW BY THE COMPETENT AUTHORITY OR ETHICS COMMITTEE IN THE COUNTRY CONCERNED
    P. END OF TRIAL
    Expand All   Collapse All
    A. Protocol Information
    A.1Member State ConcernedSpain - AEMPS
    A.2EudraCT number2022-001087-10
    A.3Full title of the trial
    An Open-label Multicenter Phase 1b-2 Study of Elacestrant as Monotherapy and in Combination with Abemaciclib in Women and Men with Brain Metastasis from Estrogen Receptor Positive, HER-2 Negative Breast Cancer (ELECTRA)
    Estudio de fase 1b-2, sin enmascaramiento, multicéntrico, en el que se evalúa elacestrant en monoterapia y en combinación con abemaciclib en mujeres y varones con metástasis cerebrales causadas por un cáncer de mama con receptores de estrógeno y sin sobreexpresión del receptor HER2 (ELECTRA)
    A.3.1Title of the trial for lay people, in easily understood, i.e. non-technical, language
    This study has 2 phases: a Phase 1b evaluation of elacestrant in combination with abemaciclib followed by a randomized Phase 2 evaluation of elacestrant alone or in combination with abemaciclib in women and men with brain metastases from ER positive, HER-2 negative breast cancer.
    Este estudio tiene 2 fases: una evaluación de Fase 1b de elacestrant en combinación con abemaciclib seguida de una evaluación randomizada de Fase 2 de elacestrant solo o en combinación con abemaciclib en mujeres y hombres con metástasis cerebrales causadas por un cáncer de mama con receptores de estrógeno y HER-2 negativo.
    A.3.2Name or abbreviated title of the trial where available
    ELECTRA
    A.4.1Sponsor's protocol code numberELA-0121
    A.7Trial is part of a Paediatric Investigation Plan No
    A.8EMA Decision number of Paediatric Investigation Plan
    B. Sponsor Information
    B.Sponsor: 1
    B.1.1Name of SponsorStemline Therapeutics, Inc
    B.1.3.4CountryUnited States
    B.3.1 and B.3.2Status of the sponsorCommercial
    B.4 Source(s) of Monetary or Material Support for the clinical trial:
    B.4.1Name of organisation providing supportStemline Therapeutics, Inc
    B.4.2CountryUnited States
    B.5 Contact point designated by the sponsor for further information on the trial
    B.5.1Name of organisationStemline Therapeutics, Inc
    B.5.2Functional name of contact pointClinical Development
    B.5.3 Address:
    B.5.3.1Street Address750 Lexington Avenue, 4th Floor
    B.5.3.2Town/ cityNew York
    B.5.3.3Post code10022 NY
    B.5.3.4CountryUnited States
    B.5.4Telephone number+13013460961
    B.5.6E-mailkgrzegorzewski@stemline.com
    D. IMP Identification
    D.IMP: 1
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation No
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product nameElacestrant
    D.3.4Pharmaceutical form Film-coated tablet
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNElacestrant
    D.3.9.1CAS number 722533-56-4
    D.3.9.2Current sponsor codeRAD1901
    D.3.9.4EV Substance CodeSUB184531
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number100
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    D.3.11.3.3Tissue Engineered Product No
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) No
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product No
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.IMP: 2
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation No
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product nameElacestrant
    D.3.4Pharmaceutical form Film-coated tablet
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNElacestrant
    D.3.9.1CAS number 722533-56-4
    D.3.9.2Current sponsor codeRAD1901
    D.3.9.4EV Substance CodeSUB184531
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number400
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    D.3.11.3.3Tissue Engineered Product No
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) No
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product No
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.IMP: 3
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation Yes
    D.2.1.1.1Trade name Verzenios®
    D.2.1.1.2Name of the Marketing Authorisation holderEli Lilly Nederland B.V.
    D.2.1.2Country which granted the Marketing AuthorisationEuropean Union
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product nameAbemaciclib
    D.3.2Product code LY2835219
    D.3.4Pharmaceutical form Film-coated tablet
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNAbemaciclib
    D.3.9.1CAS number 1231929-97-7
    D.3.9.4EV Substance CodeSUB171907
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number50
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    D.3.11.3.3Tissue Engineered Product No
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) No
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product No
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.IMP: 4
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation Yes
    D.2.1.1.1Trade name Verzenios®
    D.2.1.1.2Name of the Marketing Authorisation holderEli Lilly Nederland B.V.
    D.2.1.2Country which granted the Marketing AuthorisationEuropean Union
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product nameAbemaciclib
    D.3.2Product code LY2835219
    D.3.4Pharmaceutical form Film-coated tablet
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNAbemaciclib
    D.3.9.1CAS number 1231929-97-7
    D.3.9.4EV Substance CodeSUB171907
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number100
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    D.3.11.3.3Tissue Engineered Product No
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) No
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product No
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.IMP: 5
    D.1.2 and D.1.3IMP RoleTest
    D.2 Status of the IMP to be used in the clinical trial
    D.2.1IMP to be used in the trial has a marketing authorisation Yes
    D.2.1.1.1Trade name Verzenios®
    D.2.1.1.2Name of the Marketing Authorisation holderEli Lilly Nederland B.V.
    D.2.1.2Country which granted the Marketing AuthorisationEuropean Union
    D.2.5The IMP has been designated in this indication as an orphan drug in the Community No
    D.2.5.1Orphan drug designation number
    D.3 Description of the IMP
    D.3.1Product nameAbemaciclib
    D.3.2Product code LY2835219
    D.3.4Pharmaceutical form Film-coated tablet
    D.3.4.1Specific paediatric formulation No
    D.3.7Routes of administration for this IMPOral use
    D.3.8 to D.3.10 IMP Identification Details (Active Substances)
    D.3.8INN - Proposed INNAbemaciclib
    D.3.9.1CAS number 1231929-97-7
    D.3.9.4EV Substance CodeSUB171907
    D.3.10 Strength
    D.3.10.1Concentration unit mg milligram(s)
    D.3.10.2Concentration typeequal
    D.3.10.3Concentration number150
    D.3.11 The IMP contains an:
    D.3.11.1Active substance of chemical origin Yes
    D.3.11.2Active substance of biological/ biotechnological origin (other than Advanced Therapy IMP (ATIMP) No
    The IMP is a:
    D.3.11.3Advanced Therapy IMP (ATIMP) No
    D.3.11.3.1Somatic cell therapy medicinal product No
    D.3.11.3.2Gene therapy medical product No
    D.3.11.3.3Tissue Engineered Product No
    D.3.11.3.4Combination ATIMP (i.e. one involving a medical device) No
    D.3.11.3.5Committee on Advanced therapies (CAT) has issued a classification for this product No
    D.3.11.4Combination product that includes a device, but does not involve an Advanced Therapy No
    D.3.11.5Radiopharmaceutical medicinal product No
    D.3.11.6Immunological medicinal product (such as vaccine, allergen, immune serum) No
    D.3.11.7Plasma derived medicinal product No
    D.3.11.8Extractive medicinal product No
    D.3.11.9Recombinant medicinal product No
    D.3.11.10Medicinal product containing genetically modified organisms No
    D.3.11.11Herbal medicinal product No
    D.3.11.12Homeopathic medicinal product No
    D.3.11.13Another type of medicinal product No
    D.8 Information on Placebo
    E. General Information on the Trial
    E.1 Medical condition or disease under investigation
    E.1.1Medical condition(s) being investigated
    Brain Metastasis from Estrogen Receptor Positive, HER-2 Negative Breast Cancer
    Metástasis cerebrales causadas por un cáncer de mama con receptores de estrógeno y negativo para HER-2
    E.1.1.1Medical condition in easily understood language
    Brain Metastasis from Estrogen Receptor Positive, HER-2 Negative Breast Cancer
    Metástasis cerebrales causadas por un cáncer de mama con receptores de estrógeno y negativo para HER-2
    E.1.1.2Therapeutic area Diseases [C] - Cancer [C04]
    MedDRA Classification
    E.1.2 Medical condition or disease under investigation
    E.1.2Version 20.0
    E.1.2Level LLT
    E.1.2Classification code 10027475
    E.1.2Term Metastatic breast cancer
    E.1.2System Organ Class 100000004864
    E.1.3Condition being studied is a rare disease No
    E.2 Objective of the trial
    E.2.1Main objective of the trial
    Phase 1b
    Determine the recommended Phase 2 dose (RP2D) of this combination in patients with metastatic estrogen receptor (ER) positive, human epidermal growth factor receptor-2 (HER-2) negative breast cancer.

    Randomized Phase 2
    Evaluate the efficacy of elacestrant, alone and in combination with abemaciclib, in terms of ORR (per RECIST version 1.1) in ER positive, HER-2 negative breast cancer in patients with brain metastases.
    Fase 1b
    Determinar la dosis recomendada de esta combinación para la fase 2 (DRF2) en pacientes con cáncer de mama con expresión de receptores de estrógenos (ER) y sin sobreexpresión del receptor del factor de crecimiento epidérmico de tipo 2 (HER-2) metastásico.

    Fase 2 aleatorizada
    Evaluar la eficacia de elacestrant, en monoterapia y en combinación con abemaciclib, desde el punto de vista de la TRO (de acuerdo con los criterios RECIST, versión 1.1) en pacientes con cáncer de mama positivo para ER y negativo para HER-2 y metástasis cerebrales.
    E.2.2Secondary objectives of the trial
    Phase 1b
    • Characterize the safety of elacestrant in combination with abemaciclib.
    • Describe the plasma pharmacokinetics (PK) of elacestrant as well as abemaciclib and its metabolites.
    • Evaluate the efficacy of elacestrant in combination with abemaciclib, in terms of objective response rate (ORR) per RECIST version 1.1, duration of response (DoR), clinical benefit rate (CBR), progression-free survival (PFS), and overall survival (OS).

    Randomized Phase 2
    • Evaluate the efficacy of elacestrant, alone and in combination with abemaciclib, in terms of:
    o Intracranial response rate (RR), per RECIST version 1.1.
    o Intracranial RR, per the Response Assessment in Neuro-Oncology (RANO) Working Group criteria (Wen et al., 2017) as adapted to the assessment of brain metastases (RANO-BM).
    o DoR, CBR, PFS, OS.
    • Describe the plasma PK of elacestrant, as well as abemaciclib and its metabolites.
    The following are the main secondary objectives.
    Fase 1b
    •Caracterizar la seguridad de elacestrant en combinación con abemaciclib.
    •Describir la farmacocinética (FC) plasmática de elacestrant, y la de abemaciclib y sus metabolitos.
    •Evaluar la eficacia de elacestrant en combinación con abemaciclib según la tasa de respuesta objetiva (TRO) de acuerdo con los criterios RECIST versión 1.1, la duración de la respuesta (DdR), la tasa de beneficio clínico (TBC), la supervivencia sin progresión (SSP) y la supervivencia global (SG).

    Fase 2 aleatorizada
    •Evaluar la eficacia de elacestrant, en monoterapia y en combinación con abemaciclib, desde el punto de vista de:
    oLa tasa de respuesta (TR) intracraneal, de acuerdo con los criterios RECIST version 1.1.
    oLa TR intracraneal según los criterios RANO, adaptados a la evaluación de las metástasis cerebrales (RANO-BM).
    oLa DdR, la TBC, la SSP, la SG.
    oDescribir la FC plasmática de elacestrant, así como de abemaciclib y sus metabolitos.
    Estos son los principales objetivos secundarios.
    E.2.3Trial contains a sub-study No
    E.3Principal inclusion criteria
    1. Patient has signed the informed consent form before any study-related activities according to local guidelines.
    2. Women or men aged ≥18 years, at the time of informed consent signature.
    − Female patients may be either postmenopausal or premenopausal or perimenopausal. Postmenopausal status is defined by:
    a) Age ≥60 years
    b) Age <60 years and amenorrhea for 12 or more months (in the absence of chemotherapy, tamoxifen, toremifene, or ovarian suppression) or a follicle-stimulating hormone (FSH) value >40 mIU/mL and an estradiol value <40 pg/mL (140 pmol/L) or in postmenopausal ranges per local reference ranges
    c) Documentation of prior surgical sterilization (i.e., bilateral tubal ligation, total hysterectomy, or bilateral oophorectomy, at least 1 month before first dose of trial therapy).
    − Premenopausal or perimenopausal women must be concurrently given a luteinizing hormone-releasing hormone (LHRH) agonist starting at least 4 weeks before the start of trial therapy and is planning to continue LHRH during the study.
    − For perimenopausal women to be considered of non-childbearing potential, FSH levels must be >40 mIU/ml.
    3. Patient must have ER positive, HER-2 negative tumor status as confirmed by local laboratory testing either from a fresh biopsy or from an archival tissue obtained no more than 2 years prior to signing of the informed consent form. For Phase 1b, the presence of brain metastases is allowed but not required for eligibility, in this case, at least 1 measurable lesion outside the brain is required.
    − ER and HER-2 testing must be performed in the following manner:
    o Documentation of ER positive tumor with ≥ 1% staining by immunohistochemistry (IHC) as defined in the 2010 or 2020 American Society for Clinical Oncology (ASCO) recommendations for ER testing (Hammond et al, 2010; Allison et al, 2020), with or without progesterone receptor (PGR) positivity
    o HER-2 negative tumor with an IHC result of 0 or 1+ for cellular membrane protein expression or an in situ hybridization negative result as defined in the 2013 or 2018 ASCO recommendations for HER-2 testing (Wolff et al, 2013; Wolff et al, 2018)
    4. In Phase 2, patients must have at least one active and measurable brain metastasis per RECIST version 1.1
    − Any of the following qualifies brain metastases as active:
    a) Newly diagnosed brain metastasis in patients who never received prior central nervous system (CNS)-directed therapy
    b) Newly diagnosed brain metastasis outside any area that was previously subjected to CNS-directed therapy
    c) Brain metastases that are progressing in an area that has previously been subjected to CNS-directed therapy.
    − For lesions, including brain metastases, to qualify as measurable, and possibly be selected as target lesions, per RECIST version 1.1, the longest diameter must be ≥10 mm by CT or MRI).
    5. Patients must be off corticosteroids or receiving a stable or decreasing corticosteroid dose at the time of starting trial therapy. The dose must be ≤2.0 mg/day of dexamethasone or equivalent.
    6. Any neurological symptoms of brain metastases must be stable for at least 4 weeks before starting trial therapy.
    7. Patient has received prior therapy in the metastatic setting including:
    − At least one endocrine therapy
    − Up to two chemotherapy regimens
    − Up to two prior cyclin-dependent kinase (CDK) 4/6 inhibitors, not including abemaciclib
    o If recurrence was observed while on adjuvant therapy or within 12 months of end of adjuvant therapy, this therapy will be counted as part of required prior therapy for eligibility
    o Toxicity from prior therapy must be resolved to National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 5.0 Grade ≤1, with the exception of alopecia and peripheral sensory neuropathy (Grade ≤2).
    8. Patient has documented intra- and/or extra-cranial radiological progression or recurrence while on or after the most recent therapy.
    9. Patient has an Eastern Cooperative Oncology Group (ECOG) performance status of ≤2.
    10. Patient has adequate bone marrow and organ function, as defined by the following laboratory values (in the absence of transfusion of red blood cells or platelets or the use of growth factors within the preceding 4 weeks):
    a. Absolute neutrophil count (ANC) ≥1.5 × 109/L
    b. Platelets ≥100 × 109/L
    c. Hemoglobin ≥9.0 g/dL
    d. Potassium, sodium, calcium (corrected for serum albumin) and magnesium CTCAE Grade ≤1 (if screening assessments are abnormal, these assessments may be repeated up to 2 times; subjects may receive appropriate supplementation or treatment prior to reassessment).
    e. Creatinine clearance (per Cockcroft-Gault formula [Appendix E]) ≥50 mL/min
    f. Serum albumin ≥3.0 g/dL (≥30 g/L)
    The following are the main inclusion criteria.
    1. El paciente debe firmar el documento de consentimiento informado antes de realizar ninguna de las actividades relacionadas con el estudio, de conformidad con las directrices locales.
    2. Mujeres o varones de ≥18 años de edad en el momento de firmar el documento de consentimiento.
    Las pacientes pueden encontrarse en el período posmenopáusico, premenopáusico o perimenopáusico. Una mujer se encuentra en el período posmenopáusico si:
    a) Tiene ≥60 años de edad
    b) Tiene <60 años de edad y ha presentado amenorrea al menos durante 12 meses (sin haber recibido quimioterapia, tamoxifeno o toremifeno ni haberse sometido a inhibición de la función ovárica) o presenta un valor de la hormona estimulante de los folículos > 40 mUI/ml (140 pmol/l) o dicho valor se encuentra en los intervalos
    posmenopáusicos de acuerdo con los intervalos de referencia locales
    c) Documentación de esterilización quirúrgica previa
    3. La paciente debe presentar un tumor ER positivo y HER-2 negativo confirmado mediante pruebas analíticas en un laboratorio local, ya sea a partir de una biopsia reciente o de un tejido de archivo obtenido como máximo 2 años antes de la firma del documento de consentimiento informado.
    − La determinación de la expresión de ER y de la ausencia de sobreexpresión del HER-2 debe realizarse de la siguiente manera:
    o Documentación de la expresión de receptores de estrógenos (≥1 % de las células con tinción en la prueba de inmunohistoquímica [IHQ]), de acuerdo con las recomendaciones para la prueba de ER de la American Society for Clinical Oncology (ASCO) (del año 2010 o del año 2020), con o sin expresión de receptores de progesterona (RPG).
    o Ausencia de sobreexpresión del receptor HER-2, con un resultado en la prueba de IHQ de 0 o 1+ en relación con el grado de expresión de la proteína en la membrana celular, o un resultado negativo en la prueba de hibridación in situ, de acuerdo con las recomendaciones de la ASCO (del año 2013 o 2018) para la prueba del HER-2
    4. En la fase 2, los pacientes deben presentar al menos una metástasis cerebral activa y medible de acuerdo con los criterios RECIST, versión 1.1
    − Si el paciente presenta cualquiera de las siguientes condiciones se considerará que las metástasis cerebrales son activas:
    a) Metástasis cerebrales diagnosticadas recientemente en pacientes que nunca han recibido tratamiento dirigido al sistema nervioso central (SNC)
    b) Metástasis cerebral diagnosticada recientemente fuera de cualquier área que haya recibido previamente un tratamiento dirigido al SNC
    c) Metástasis cerebrales que estén progresando en un área que haya recibido previamente un tratamiento dirigido al SNC.
    Para que las lesiones se consideren medibles (incluidas las metástasis cerebrales) y posiblemente se seleccionen como lesiones diana de acuerdo con los criterios RECIST versión 1.1, el diámetro más largo debe ser ≥10 mm de acuerdo con los resultados de una TC o una RMN).
    5. Los pacientes no deben estar recibiendo corticoesteroides o estar recibiendo una dosis estable o decreciente de corticoesteroides cuando se inicie el tratamiento del estudio. La dosis debe ser
    ≤2,0 mg/día de dexametasona o equivalente.
    6. Cualquier síntoma neurológico de las metástasis cerebrales debe permanecer estable al menos durante las 4 semanas anteriores al inicio del tratamiento del studio.
    7. El paciente ha recibido un tratamiento previo para las metástasis, incluidos:
    -Al menos una hormonoterapia
    -Hasta dos tratamientos quimioterápicos
    - Hasta dos inhibidores de las cinasas dependientes de ciclinas (CDK) 4/6, sin incluir abemaciclib.
    o Si durante el tratamiento adyuvante o en el transcurso de los 12 meses posteriores a la finalización de dicho tratamiento adyuvante se observó una recidiva, este tratamiento se contabilizará como parte del tratamiento previo requerido para determinar la elegibilidad
    del paciente
    o La toxicidad de los tratamientos previos debe haberse resuelto, es decir, haber alcanzado un grado ≤1 según los criterios CTCAE versión 5.0, salvo los casos de alopecia y de neuropatía sensorial periférica (grado ≤2).
    8. El paciente presenta progresión o recurrencia radiológica intra y/o extracraneal documentada durante el tratamiento más reciente o después de este.
    9. El paciente presenta una categoría funcional ECOG ≤2.
    10. El paciente presenta una función medular y orgánica aceptables de acuerdo con los siguientes valores analíticos (sin haber recibido transfusiones de glóbulos rojos o plaquetas ni factores de crecimiento en las 4 semanas anteriores):
    a. Recuento absoluto de neutrófilos (RAN) ≥1,5 × 109/l
    b. Plaquetas ≥100 × 109/l
    c. Hemoglobina ≥9,0 g/dl
    d. Las concentraciones de potasio, sodio, calcio (corregido en función de la concentración dealbúmina sérica) y magnesio deben presentar un grado CTCAE ≤1
    e. Aclaramiento de creatinina ≥50 ml/min, de acuerdo con la fórmula de Cockcroft-Gault
    f. Concentración de albúmina sérica ≥3,0 g/dl (≥30 g/l)
    E.4Principal exclusion criteria
    1. Immediate CNS-specific treatment is likely to be required, per the treating physician’s assessment.
    2. Patient has leptomeningeal metastases, defined as having positive CSF cytology or unequivocal radiologic or clinical evidence of leptomeningeal involvement.
    3. Breast cancer treatment-naïve patients in the metastatic setting. Patients who experience a recurrence while on adjuvant therapy or within 12 months of end of adjuvant therapy are allowed.
    4. Prior therapy with elacestrant or abemaciclib in the metastatic setting. Note: use of abemaciclib in the adjuvant setting is allowed if the last treatment administration was more than 12 months prior to first recurrence.
    5. Patient has a concurrent malignancy or malignancy within 3 years of enrollment, with the exception of adequately treated basal or squamous cell skin cancer, superficial bladder cancer, carcinoma in situ of the cervix or second primary breast cancer.
    6. Currently participating in another breast cancer intervention clinical study. Patients who are being followed for overall survival for another clinical trial with no therapy and study intervention are allowed.
    7. Prior anti-cancer or investigational drug treatment within the following windows:
    • Fulvestrant treatment (last injection) <42 days before first dose of study drug
    • Any other endocrine therapy <14 days before first dose of study drug
    • Chemotherapy or other anti-cancer therapy <21 days before first dose of study drug
    • Any investigational anti-cancer drug therapy within <28 days or <5 half-lives, whichever is shorter.
    • Bisphosphonates or RANKL inhibitors initiated or dose changed <3 months prior to first dose of study drug.
    8. Radiation therapy (other than CNS directed) within 14 days before the first dose of study drug.
    9. Uncontrolled significant active infections.
    • Patients with hepatitis B virus (HBV) and/or hepatitis C virus (HCV) infection must have undetectable viral load during screening.
    • Patients known to be HIV+ are allowed as long as they have undetectable viral load at baseline.
    10. Major surgery within 4 weeks of starting trial therapy.
    11. Inability to take oral medication, or history of malabsorption syndrome or any other uncontrolled gastrointestinal condition.
    12. Females of childbearing potential who:
    − Within 28 days of study entry, did not use a highly effective method of contraception, which includes any of the following:
    a. Intrauterine device
    b. Double-barrier contraception
    c. Total abstinence
    d. Have a vasectomized partner with confirmed azoospermia.
    − Do not agree to use a highly effective method of contraception, as described above, throughout the entire study period and for 28 days after trial therapy discontinuation.
    13. Men who do not agree abstain from donating sperm or to use a highly effective method of contraception during the treatment period and for 120 days thereafter. Highly effective methods include any of the following:
    a. Double-barrier contraception
    b. Total abstinence
    c. Vasectomized with confirmed azoospermia
    d. Female partner with intrauterine device.
    14. Females who are breastfeeding or pregnant.
    15. Known intolerance to either study drug or any of the excipients.
    16. Patient is currently receiving or received any of the following medications prior to first dose of trial therapy:
    a. Known strong or moderate inducers or inhibitors of cytochrome P450 (CYP) 3A4 within 21 days prior to initiating trial therapy
    b. Herbal preparations/medications. These include, but are not limited to, St. John’s wort, kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng within 21 days prior to initiating trial therapy
    c. Vaccination, including but not limited to vaccination against COVID-19, during the 7 days prior to randomization.
    17. Any medical or other condition that in the opinion of the investigator(s) would preclude the patient’s participation in a clinical study.
    18. Evidence of ongoing alcohol or drug abuse.
    1. El paciente requiera probablemente un tratamiento inmediato específico para el SNC, de acuerdo con la evaluación del médico responsable.
    2. El paciente presenta metástasis leptomeníngeas, que vienen definidas por un resultado positivo en un estudio citológico del LCR o por signos clínicos o radiológicos inequívocos de afectación
    leptomeníngea.
    3. Pacientes que no hayan recibido tratamiento para las metástasis del cáncer de mama. Podrán participar los pacientes que experimenten una recidiva mientras reciben tratamiento adyuvante
    o en el transcurso de los 12 meses posteriores a la finalización de dicho tratamiento adyuvante.
    4. Tratamiento previo con elacestrant o abemaciclib para tratar las metástasis.
    5. El paciente presenta una neoplasia maligna de forma concurrente o ha presentado una neoplasia maligna en el transcurso de los 3 años anteriores al reclutamiento, salvo los casos de cáncer de piel de células basales o escamosas adecuadamente tratado, cáncer de vejiga superficial, carcinoma in situ del cuello uterino o un segundo cáncer primario de mama.
    6. Participar actualmente en otro estudio clínico de intervención en la indicación de cáncer de mama. Se permite la participación de pacientes a los que se les esté realizando seguimiento para
    determinar la supervivencia global en otro estudio clínico en el que no se realice ninguna intervención terapéutica.
    7. Haber recibido anteriormente un tratamiento antineoplásico o con un medicamento en fase de investigación en los siguientes períodos:
    •Tratamiento con fulvestrant (última inyección) <42 días antes de la primera dosis del medicamento del estudio
    •Cualquier otra hormonoterapia <14 días antes de la primera dosis del medicamento del estudio
    • Quimioterapia u otro tratamiento antineoplásico <21 días antes de la primera dosis del medicamento del estudio
     Cualquier tratamiento antineoplásico en investigación en un plazo de <28 días o <5 semividas, el período más corto
    •Bisfosfonatos o inhibidores del RANKL cuya administración se haya iniciado o cuya dosis se haya modificado <3 meses antes de la primera dosis del medicamento del estudio.
    8. Radioterapia (distinta de la dirigida al SNC) en el transcurso de los 14 días anteriores a la primera dosis del medicamento del estudio.
    9. Infecciones activas significativas sin controlar.
    •Los pacientes con infección por VHB y/o VHC deben presentar una carga vírica indetectable durante la selección.
    • Los pacientes que se sepa que presentan VIH pueden participar siempre que presenten una carga vírica indetectable durante el período inicial.
    10. Haberse sometido a una intervención de cirugía mayor en el transcurso de las 4 semanas anteriores al inicio del tratamiento del estudio.
    11. Incapacidad de tomar medicamentos orales, o antecedentes de síndrome de malabsorción o cualquier otra enfermedad gastrointestinal sin controlar.
    12. Mujeres que puedan quedarse embarazadas y que:
    •En el transcurso de los 28 días anteriores a la inclusión en el estudio no hayan utilizado un método anticonceptivo muy eficaz, incluidos cualquiera de los siguientes:
    a. Dispositivo intrauterino
    b. Anticoncepción de doble barrera
    c. Abstinencia total
    d. Que la pareja se haya sometido a una vasectomía con azoospermia confirmada.
    •No estén de acuerdo en utilizar un método anticonceptivo muy eficaz durante todo el período de estudio y los 28 días posteriores a la interrupción del tratamiento del estudio.
    13. Varones que no acepten abstenerse de donar esperma o utilizar un método anticonceptivo muy eficaz durante el período de tratamiento y los 120 días posteriores. Los métodos anticonceptivos
    muy eficaces incluyen cualquiera de los siguientes:
    a. Anticoncepción de doble barrera
    b. Abstinencia total
    c. Vasectomía, con azoospermia confirmada
    d. Pareja femenina con dispositivo intrauterino.
    14. Mujeres en período de lactancia o embarazadas.
    15. Intolerancia conocida al medicamento del estudio o a cualquiera de los excipientes.
    16. El paciente recibe en la actualidad o ha recibido alguno de los siguientes medicamentos antes de
    la primera dosis del tratamiento del estudio:
    a. Inductores o inhibidores fuertes o moderados conocidos del citocromo P450 (CYP)3A4 en el transcurso de los 21 días anteriores al inicio del tratamiento del estudio
    b. Preparados/medicamentos herbarios. Estos incluyen, entre otros, la hierba de San Juan, la kava, la efedra (ma huang), el gingko biloba, la deshidroepiandrosterona, el yohimbe, la palma enana americana y el ginseng en el transcurso de los 21 días anteriores al inicio del tratamiento del estudio.
    c. Haber recibido alguna vacuna en el transcurso de los 7 días anteriores a la aleatorización
    17. Cualquier enfermedad o trastorno que, en opinión del investigador, impida que el paciente participe en un estudio clínico.
    18. Indicios de presentar en la actualidad toxicomanías o alcoholismo.
    E.5 End points
    E.5.1Primary end point(s)
    Phase 1b:
    The primary study endpoint is determination of the RP2D based on the observed number of DLTs during the first cycle.

    Randomized Phase 2:
    − ORR per blinded independent central review.
    Fase 1b:
    El criterio principal de valoración del estudio es la determinación de la DRF2 de acuerdo con el número de TLD observadas durante el primer ciclo.

    Fase 2 aleatorizada
    - TRO de acuerdo con una revisión central e independiente de datos enmascarados.
    E.5.1.1Timepoint(s) of evaluation of this end point
    Phase 1b: Cycle 1 (28 days)
    Randomized Phase 2: throughout the study duration (based on CT/MRI scans performed every 8 weeks until radiological disease progression)
    Fase 1b: Ciclo 1 (28 días)
    Fase 2 aleatorizada: a lo largo de la duración del estudio (basado en tomografías computarizadas/resonancias magnéticas realizadas cada 8 semanas hasta la progresión radiológica de la enfermedad)
    E.5.2Secondary end point(s)
    Phase 1b:
    − AEs and serious adverse events (SAEs) as well as changes in clinical laboratory values, vital signs measurements and ECG parameters.
    − Plasma PK parameters including, but not limited to, the area under the plasma concentration-time curve over the dosing interval (AUC0-tau), Cmax, time of the maximum observed plasma concentration (Tmax), and Ctrough.
    − ORR, DoR, CBR, PFS, and OS.

    Randomized Phase 2:
    − Intracranial RR per blinded independent central review; defined as the proportion of patients achieving a best overall response of confirmed PR+CR, based on intracranial lesions (per RECIST version 1.1).
    − Intracranial RR per blinded independent central review; defined as the proportion of patients achieving a best overall response of confirmed PR+CR, based on intracranial lesions (per RANO criteria [Wen et al., 2017]). All radiological measurements and assessments will be provided by independent central review; the clinical components required by RANO criteria will be derived from the electronic case report form.
    − DoR, CBR, and PFS per blinded independent central review.
    − ORR, intracranial RR (per RECIST version 1.1 [Appendix C]), intracranial RR (per RANO criteria [Wen et al., 2017]), DoR, CBR, PFS, and OS, per local investigator’s assessment.
    − Plasma PK parameters including, but not limited to AUC0-tau, Cmax, Tmax, and Ctrough.
    − Change in patients’ responses to EORTC QLQ-C30, EORTC QLQ-BN20, and EQ-5D-5L.
    − Change in patients’ responses to MMSE-2, HVLT-R: learning and memory, and NANO scale.
    − AEs and SAEs as well as changes in clinical laboratory values, vital signs measurements and ECG parameters.
    Fase 1b:
    - AA y acontecimientos adversos graves (AAG), así como los cambios en los valores de los análisis clínicos, las constantes vitales y los parámetros del ECG.
    - Parámetros de FC plasmática, entre los que se incluyen el área bajo la curva de concentración plasmática-tiempo a lo largo del intervalo de administración (ABC0-tau), la Cmáx, el tiempo transcurrido hasta la concentración plasmática máxima observada (Tmáx) y la Cmín.
    - La TRO, la DdR, la TBC, la SSP y la SG.

    Fase 2 aleatorizada:
    - TR intracraneal de acuerdo con una revisión central e independiente de datos enmascarados, definida como la proporción de pacientes que alcancen una mejor respuesta global de RP+RC confirmada, de acuerdo con lesiones intracraneales y según los criterios RECIST versión 1.1.
    - TR intracraneal de acuerdo con una revisión central e independiente de datos enmascarados, definida como la proporción de pacientes que alcancen una mejor respuesta global de RP+RC confirmada, de acuerdo con lesiones intracraneales y según los criterios RANO
    (Wen et al., 2017). Todas las mediciones y evaluaciones radiológicas se realizarán mediante una revisión central e independiente; los componentes clínicos requeridos de acuerdo con los criterios
    RANO se obtendrán a partir del cuaderno electrónico de recogida de datos.
    - DdR, TBC y SG, de acuerdo con una revisión central e independiente de datos enmascarados.
    - TRO, TR intracraneal (según los criterios RECIST versión 1.1), TR intracranial (según los criterios RANO [Wen et al., 2017]), DdR, TBC, SSP y SG, de acuerdo con la evaluación del investigador local.
    - Parámetros de FC plasmática, entre los que se incluyen, el ABC0-tau, la Cmáx, el Tmáx y la Cmín.
    - Cambio en las respuestas de los pacientes al EORTC QLQ C30, al EORTC QLQ BN20 y al EQ-5D-5L.
    - Cambio en las respuestas de los pacientes al MMSE-2, HVLT-R: aprendizaje y memoria, y a la escala NANO.
    - AA y AAG, así como los cambios en los valores de los análisis clínicos, las constantes vitales y los parámetros del ECG.
    E.5.2.1Timepoint(s) of evaluation of this end point
    Phase 1b:
    Safety throughout the study duration
    Plasma PK based on samples collected on Cycle 1 Day 15
    Radiological response throughout the study duration (based on CT/MRI scans performed every 8 weeks until radiological disease progression)

    Randomized Phase 2:
    Radiological response throughout the study duration (based on CT/MRI scans performed every 8 weeks until radiological disease progression)
    Plasma PK based on samples collected on Cycle 1 Day 15 (only 10 patients in Arm B)
    QoL and neurocognitive questionnaires administered on each cycle Day 1 and at the end of treatment visit
    Safety throughout the study duration
    Fase 1b:
    Seguridad a lo largo de la duración del studio
    Plasma PK basado en muestras obtenidas en el Ciclo 1 Día 15
    Respuesta radiológica a lo largo de la duración del estudio (basado en tomografías computarizadas/resonancias magnéticas realizadas cada 8 semanas hasta la progresión radiológica de la enfermedad)

    Fase 2 aleatorizada:
    Respuesta radiológica a lo largo de la duración del estudio (basado en TAC/RMN realizadas cada 8 semanas hasta la progresión radiológica de la enfermedad)
    Farmacocinética plasmática basada en muestras recolectadas en el Día 15 del Ciclo 1 (solo 10 pacientes en el Grupo B)
    QoL y cuestionarios neurocognitivos administrados en cada ciclo Día 1 y al final de la visita de tratamiento
    Seguridad a lo largo de la duración del estudio
    E.6 and E.7 Scope of the trial
    E.6Scope of the trial
    E.6.1Diagnosis No
    E.6.2Prophylaxis No
    E.6.3Therapy No
    E.6.4Safety Yes
    E.6.5Efficacy Yes
    E.6.6Pharmacokinetic Yes
    E.6.7Pharmacodynamic Yes
    E.6.8Bioequivalence No
    E.6.9Dose response Yes
    E.6.10Pharmacogenetic No
    E.6.11Pharmacogenomic No
    E.6.12Pharmacoeconomic No
    E.6.13Others No
    E.7Trial type and phase
    E.7.1Human pharmacology (Phase I) Yes
    E.7.1.1First administration to humans No
    E.7.1.2Bioequivalence study No
    E.7.1.3Other Yes
    E.7.1.3.1Other trial type description
    Phase 1b evaluation of elacestrant in combination with abemaciclib
    E.7.2Therapeutic exploratory (Phase II) Yes
    E.7.3Therapeutic confirmatory (Phase III) No
    E.7.4Therapeutic use (Phase IV) No
    E.8 Design of the trial
    E.8.1Controlled No
    E.8.1.1Randomised Yes
    E.8.1.2Open Yes
    E.8.1.3Single blind No
    E.8.1.4Double blind No
    E.8.1.5Parallel group No
    E.8.1.6Cross over No
    E.8.1.7Other No
    E.8.2 Comparator of controlled trial
    E.8.2.1Other medicinal product(s) Information not present in EudraCT
    E.8.2.2Placebo Information not present in EudraCT
    E.8.2.3Other Information not present in EudraCT
    E.8.2.4Number of treatment arms in the trial2
    E.8.3 The trial involves single site in the Member State concerned No
    E.8.4 The trial involves multiple sites in the Member State concerned Yes
    E.8.4.1Number of sites anticipated in Member State concerned7
    E.8.5The trial involves multiple Member States Yes
    E.8.5.1Number of sites anticipated in the EEA27
    E.8.6 Trial involving sites outside the EEA
    E.8.6.1Trial being conducted both within and outside the EEA Yes
    E.8.6.2Trial being conducted completely outside of the EEA No
    E.8.6.3If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned
    Korea, Republic of
    United States
    France
    Spain
    Germany
    Italy
    United Kingdom
    E.8.7Trial has a data monitoring committee Yes
    E.8.8 Definition of the end of the trial and justification where it is not the last visit of the last subject undergoing the trial
    The study will be closed within 6 months of the cutoff date for the survival analysis. If a patient is still receiving trial therapy, he/she will continue to be provided with study treatment, until treatment discontinuation or until elacestrant is approved for marketing in his/her country.
    El estudio se cerrará dentro de los 6 meses posteriores a la fecha límite para el análisis de supervivencia. Si un paciente todavía está recibiendo el medicamento en investigación, se le seguirá proporcionando el tratamiento del estudio, hasta que se interrumpa el tratamiento o hasta que se apruebe la comercialización de elacestrant en su país.
    E.8.9 Initial estimate of the duration of the trial
    E.8.9.1In the Member State concerned years5
    E.8.9.1In the Member State concerned months0
    E.8.9.1In the Member State concerned days0
    E.8.9.2In all countries concerned by the trial years5
    E.8.9.2In all countries concerned by the trial months0
    E.8.9.2In all countries concerned by the trial days0
    F. Population of Trial Subjects
    F.1 Age Range
    F.1.1Trial has subjects under 18 No
    F.1.1.1In Utero No
    F.1.1.2Preterm newborn infants (up to gestational age < 37 weeks) No
    F.1.1.3Newborns (0-27 days) No
    F.1.1.4Infants and toddlers (28 days-23 months) No
    F.1.1.5Children (2-11years) No
    F.1.1.6Adolescents (12-17 years) No
    F.1.2Adults (18-64 years) Yes
    F.1.2.1Number of subjects for this age range: 40
    F.1.3Elderly (>=65 years) Yes
    F.1.3.1Number of subjects for this age range: 66
    F.2 Gender
    F.2.1Female Yes
    F.2.2Male Yes
    F.3 Group of trial subjects
    F.3.1Healthy volunteers No
    F.3.2Patients Yes
    F.3.3Specific vulnerable populations Yes
    F.3.3.1Women of childbearing potential not using contraception No
    F.3.3.2Women of child-bearing potential using contraception Yes
    F.3.3.3Pregnant women No
    F.3.3.4Nursing women No
    F.3.3.5Emergency situation No
    F.3.3.6Subjects incapable of giving consent personally No
    F.3.3.7Others No
    F.4 Planned number of subjects to be included
    F.4.1In the member state9
    F.4.2 For a multinational trial
    F.4.2.1In the EEA 42
    F.4.2.2In the whole clinical trial 106
    F.5 Plans for treatment or care after the subject has ended the participation in the trial (if it is different from the expected normal treatment of that condition)
    Standard of Care.
    Estándar de tratamiento.
    G. Investigator Networks to be involved in the Trial
    N. Review by the Competent Authority or Ethics Committee in the country concerned
    N.Competent Authority Decision Authorised
    N.Date of Competent Authority Decision2022-11-21
    N.Ethics Committee Opinion of the trial applicationFavourable
    N.Ethics Committee Opinion: Reason(s) for unfavourable opinion
    N.Date of Ethics Committee Opinion2022-11-18
    P. End of Trial
    P.End of Trial StatusOngoing
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