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Elacestrant in Patients With ER+ HER2- ESR1-mutated Locally Advanced or Metastatic Breast Cancer (ELENI)

24 juin 2026 mis à jour par: iOMEDICO AG

Elacestrant in Patients With ER+ HER2- ESR1-mutated Locally Advanced or Metastatic Breast Cancer: a Multicenter, National, Prospective Non-interventional Study

The objective of this non-interventional study (NIS) is to evaluate prevalence of ESR1 mutation after endocrine therapy in the palliative setting, quality of life, tolerability, and safety and to describe treatment detail and adverse event (AE) management in postmenopausal women with locally advanced and/or metastatic ER+ HER2- ESR1-mutated breast cancer and second line treatment with elacestrant according to SmPC (Summary of product characteristics) in a real-world setting.

Aperçu de l'étude

Statut

Recrutement

Les conditions

Intervention / Traitement

Type d'étude

Observationnel

Inscription (Estimé)

500

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Lieux d'étude

  • Allemagne
      • Freiburg im Breisgau, Allemagne, 79110
        • Recrutement
        • Praxis für interdisziplinäre Onkologie & Hämatologie
        • Contact:
      • Paderborn, Allemagne, 33098
        • Recrutement
        • St. Louise Frauen- und Kinderklinik
        • Contact:
      • Ravensburg, Allemagne, 88212
        • Recrutement
        • Gemeinschaftspraxis für Hämatologie und Onkologie
        • Contact:

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte
  • Adulte plus âgé

Accepte les volontaires sains

Non

Méthode d'échantillonnage

Échantillon de probabilité

Population étudiée

Postmenopausal women with locally advanced and/or metastatic estrogen receptor-positive (ER+) human epidermal growth factor receptor 2-negative (HER2)- breast cancer with disease progression on endocrine therapy and cyclin-dependent kinase inhibitor (CDKi) and intention for second line (2L) treatment with elacestrant according to summary of product characteristics (SmPC).

La description

Inclusion Criteria:

  • Signed and dated informed consent form
  • Postmenopausal women
  • Age ≥18 years
  • Eastern Cooperative Oncology Group Performance Status (ECOG) < 2
  • Locally advanced and/or metastatic ER+ HER2- breast cancer
  • Histologically proven ER positivity (defined as ≥1% staining by immunohistochemistry (IHC))
  • Histologically proven HER2 negativity (defined as a IHC0 or IHC1+ score by IHC or a negative result by in situ hybridization (ISH), optionally combined with a IHC2+ score)
  • Disease progression following first line ET + CDKi
  • No more than one prior ET line in the advanced/metastatic setting and intention for 2nd-line treatment with elacestrant according to current elacestrant SmPC as assessed by the treating physician (ESR1 testing can be done after inclusion)
  • For patients with proven ESR1mut: Study inclusion the latest 2 weeks after start of elacestrant treatment

Exclusion Criteria

  • Prior chemotherapy in the advanced/metastatic setting
  • Contraindications according to elacestrant SmPC, except for ESR1 test result for patients included prior to ESR1 testing.
  • Participation in an interventional clinical trial within 30 days prior to enrolment or simultaneous participation in an interventional clinical trial (except follow-up phase)

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

Cohortes et interventions

Groupe / Cohorte
Intervention / Traitement
ESR1 wildtype
Patients with a ESR1 wildtype tumor
Médicament: Standard of care (Investigator Choice)
Treatment decision of investigator
ESR1 mutated
Patients with a ESR1 mutated tumor
Médicament: Elacestrant
According to the Summary of Product Characteristics (SmPC)
Autres noms:
  • Orserdu®

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Change from baseline in EORTC global health scale
Délai: From Time of enrollment until month 11
Change from baseline quality of life (QoL) over time for the global health scale of the EORTC QLQ- C30 questionnaire The EORTC QLQ- C30 global health scale ranges from 0 to 100, with higher scores indicating better quality of life.
From Time of enrollment until month 11

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Évaluer les paramètres de prise de décision en matière de traitement par les médecins à l'aide d'un questionnaire
Délai: Référence
Fréquence de paramètres distincts affectant le choix thérapeutique ; questionnaire rempli par le médecin traitant.
Référence
Time to deterioration in global health scale (EORTC QLQ-C30)
Délai: From Time of enrollment until month 11
Time to deterioration in global health scale of EORTC QLQ-C30 The EORTC QLQ- C30 global health scale ranges from 0 to 100, with higher scores indicating better quality of life.
From Time of enrollment until month 11
Time to deterioration in functional scores (EORTC QLQ-C30)
Délai: From Time of enrollment until month 11
Time to deterioration in functional scores of EORTC QLQ-C30. The EORTC QLQ- C30 functional score ranges from 0 to 100, with higher scores indicating better quality of life.
From Time of enrollment until month 11
Time to deterioration in symptom scores (EORTC QLQ-C30)
Délai: From Time of enrollment until month 11
Time to deterioration in symptom scores of EORTC QLQ-C30 The EORTC QLQ- C30 symptom score ranges from 0 to 100, with lower scores indicating better quality of life.
From Time of enrollment until month 11
Change from baseline in functional and symptom scores
Délai: From Time of enrolment until up to 11 months after enrolment.
Change from baseline in functional and symptom scores of EORTC QLQ-C30 The EORTC QLQ- C30 functional and symptom scores ranges from 0 to 100, with higher scores indicating better quality of life (for functional scores), and lower indication better quality of life for symptom scores.
From Time of enrolment until up to 11 months after enrolment.
Change from baseline in visual analogue scale (VAS)
Délai: From Time of enrollment until month 11.
Change from baseline in EQ-5D-5L visual analogue scale (VAS); The EQ-5D-5L VAS ranges from 0 to 100, with higher scores indicating better quality of life.
From Time of enrollment until month 11.
Change from baseline in index value
Délai: From Time of enrollment until month 11.
Change from baseline in EQ-5D-5L Index Value The EQ-5D-5L index value ranges from -0.661 to 1, with higher scores indicating better quality of life.
From Time of enrollment until month 11.
Change from baseline in all scales of EQ-5D-5L
Délai: From Time of enrollment until month 11.
Change from baseline in all scales of EQ-5D-5L The scales of EQ-5D-5L range from 1 to 5, with lower scores indicating better quality of life.
From Time of enrollment until month 11.
Prevalence of ESR1 mutation
Délai: Baseline
Assess prevalence of ESR1mut in patients intended for elacestrant treatment as well as the testing methodology and results for ESR1 mutations.
Baseline
Drug safety: Frequency
Délai: From time of treatment start until 30 days after end of elacestrant treatment
Frequency of specific (serious) adverse drug reactions ((S)ADRs) (nausea, vomiting, decreased appetite)
From time of treatment start until 30 days after end of elacestrant treatment
Drug safety: Incidence of adverse events
Délai: From time of treatment start until 30 days after end of elacestrant treatment
Incidence of (serious) adverse events ((S)AEs), (serious) adverse drug reactions ((S)ADRs)
From time of treatment start until 30 days after end of elacestrant treatment
Drug safety: Change from baseline in AST (Aspartate Aminotransferase)
Délai: From time of treatment start until 30 days after end of elacestrant treatment (max. 24 months)
Change from baseline in AST
From time of treatment start until 30 days after end of elacestrant treatment (max. 24 months)
Drug safety: Change from baseline in ALT (Alanine Aminotransferase)
Délai: From time of treatment start until 30 days after end of elacestrant treatment (max. 24 months)
Change from baseline in ALT
From time of treatment start until 30 days after end of elacestrant treatment (max. 24 months)
Drug safety: Change from baseline in bilirubin
Délai: From time of treatment start until 30 days after end of elacestrant treatment (max. 24 months)
Change from baseline in bilirubin
From time of treatment start until 30 days after end of elacestrant treatment (max. 24 months)
Patients and disease characteristics: Age
Délai: Baseline
Assess patients characteristics in patients with intention for treatment with elacestrant: Age (descriptive statistics, categorical (</≥ 65))
Baseline
Patients and disease characteristics: Body mass index (BMI)
Délai: Baseline
Assess patients characteristics in patients with intention for treatment with elacestrant: BMI (descriptive statistics, categorical (underweight, normal weight, overweight, obese))
Baseline
Patients and disease characteristics: ECOG Performance status
Délai: Baseline
Assess patients characteristics in patients with intention for treatment with elacestrant: ECOG Performance status
Baseline
Patients and disease characteristics: CCI (Charlson score and contributing diseases)
Délai: Baseline
Assess patients characteristics in patients with intention for treatment with elacestrant: CCI (Charlson score and contributing diseases)
Baseline
Patients and disease characteristics: Time since diagnosis
Délai: Baseline
Assess disease characteristics in patients with intention for treatment with elacestrant: Time since diagnosis (descriptive statistics)
Baseline
Patients and disease characteristics: TNM staging
Délai: Baseline
Assess disease characteristics in patients with intention for treatment with elacestrant: TNM staging (including AJCC) at initial diagnosis
Baseline
Patients and disease characteristics: Metastatic sites
Délai: Baseline
Assess disease characteristics in patients with intention for treatment with elacestrant: • Metastatic sites at inclusion
Baseline
Patients and disease characteristics: Tumor Grading
Délai: Baseline
Assess disease characteristics in patients with intention for treatment with elacestrant: Tumor Grading at initial diagnosis and inclusion
Baseline
Patients and disease characteristics: HR and HER2 status
Délai: Baseline
Assess disease characteristics in patients with intention for treatment with elacestrant: HR status and HER2 status at initial diagnosis and at inclusion
Baseline
Patients and disease characteristics: Prior adjuvant chemotherapy
Délai: Baseline
Assess disease characteristics in patients with intention for treatment with elacestrant: Prior adjuvant chemotherapy
Baseline
Patients and disease characteristics: Prior adjuvant endocrine therapy
Délai: Baseline
Assess disease characteristics in patients with intention for treatment with elacestrant: Prior adjuvant endocrine therapy
Baseline
Patients and disease characteristics: prior CDKi/endocrine therapy in the palliative setting
Délai: Baseline
Assess disease characteristics in patients with intention for treatment with elacestrant: Type and duration of prior CDKi/endocrine therapy in the palliative setting (descriptive statistics, categorical ≤6 months / >6 months; ≤12 months / >12 months)
Baseline
Patients and disease characteristics: Disease site
Délai: At time of enrollment
Assess disease characteristics in patients with intention for treatment with elacestrant: Disease site (bone-only / visceral / non-visceral (not bone-only)) at inclusion
At time of enrollment
Patients and disease characteristics: concomitant diseases
Délai: Baseline
Assess disease characteristics in patients with intention for treatment with elacestrant: concomitant diseases
Baseline
Use of concomitant medication
Délai: max. 24 months; from the patient-specific study start to end of study (during elacestrant treatment)
Assess the use of concomitant medication during treatment with elacestrant.
max. 24 months; from the patient-specific study start to end of study (during elacestrant treatment)
Frequency of first subsequent systemic antineoplastic therapy for ESR1wt patients and ESR1mut patients without elacestrant treatment
Délai: max. 24 months; at patient patient-specific start of treatment
Assess second-line treatments for all patients by ESR1 status (Frequency of first subsequent systemic antineoplastic therapy for ESR1wt patients and ESR1mut patients without elacestrant treatment (refers to first treatment received starting from second line)
max. 24 months; at patient patient-specific start of treatment
Details on treatment with elacestrant: reason for end of treatment
Délai: max. 24 months; from the patient-specific study start to end of study (during elacestrant treatment)
Assess reason for end of treatment (treatment with elacestrant)
max. 24 months; from the patient-specific study start to end of study (during elacestrant treatment)
Details on treatment with elacestrant: dose intensity
Délai: max. 24 months; from the patient-specific study start to end of study (during elacestrant treatment)
Assess dose intensity (treatment with elacestrant) as prescribed by the treating physician
max. 24 months; from the patient-specific study start to end of study (during elacestrant treatment)
Details on treatment with elacestrant: frequency and type of dose modification
Délai: max. 24 months; from the patient-specific study start to end of study (during elacestrant treatment)
Assess Frequency and type of dose modifications (dose reductions, interruptions) compared to SmPC of elacestrant.
max. 24 months; from the patient-specific study start to end of study (during elacestrant treatment)
Details on treatment with elacestrant: reasons for dose modifications and interruptions
Délai: max. 24 months; from the patient-specific study start to end of study (during elacestrant treatment)
Assess reasons for dose modifications and interruptions (elacestrant treatment)
max. 24 months; from the patient-specific study start to end of study (during elacestrant treatment)
Treatments following elacestrant therapy: Type of first subsequent systemic antineoplastic therapy
Délai: max. 24 months; from the patient-specific end of elacestrant treatment until end of study
Details on treatments following elacestrant therapy (Type of first subsequent systemic antineoplastic therapy)
max. 24 months; from the patient-specific end of elacestrant treatment until end of study
Treatments following elacestrant therapy: Frequency of first subsequent systemic antineoplastic therapy
Délai: max. 24 months; from the patient-specific end of elacestrant treatment until end of study
Details on treatments following elacestrant therapy:Frequency of first subsequent systemic antineoplastic therapy for ESR1mut patients (refers to first treatment received after Elacestrant so starting from third line)
max. 24 months; from the patient-specific end of elacestrant treatment until end of study

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

iOMEDICO AG

Collaborateurs

Berlin Chemie AG

Les enquêteurs

  • Chercheur principal: Thomas Decker, Professor, Gemeinschaftspraxis für Hämatologie und Onkologie GbR Ravensburg
  • Chercheur principal: Michael Patrick Lux, Professor, St. Louise Frauen- und Kinderklinik Paderborn

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

19 juin 2026

Achèvement primaire (Estimé)

1 juin 2028

Achèvement de l'étude (Estimé)

1 juin 2028

Dates d'inscription aux études

Première soumission

2 décembre 2025

Première soumission répondant aux critères de contrôle qualité

29 avril 2026

Première publication (Réel)

4 mai 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

25 juin 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

24 juin 2026

Dernière vérification

1 juin 2026

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • IOM-090506

Plan pour les données individuelles des participants (IPD)

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