Clinical trial · Interventional
Open-label, Phase II, Study of Everolimus Plus Letrozole in Postmenopausal Women With ER+, HER2- Metastatic or Locally Advanced Breast Cancer
An Open-label, Phase II, Single-arm Study of Everolimus in Combination With Letrozole in the Treatment of Postmenopausal Women With Estrogen Receptor Positive HER2 Negative Metastatic or Locally Advanced Breast Cancer
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
The purpose of this study was to assess the efficacy and safety of first-line treatment with everolimus plus letrozole in postmenopausal women with estrogen receptor-positive (ER+), human epidermal growth factor receptor 2 negative (HER2-) locally advanced or metastatic breast cancer. Moreover, the study also aimed to investigate the efficacy and safety of second line treatment with everolumus plus examestane in participants whose disease progressed during everolimus plus letrozole therapy.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Hormone Receptor Positive Breast Cancer | Breast Neoplasm | ONTOLOGY_EXACT | 0.90 |
Interventions
Interventions (5)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Alcohol-free dexamethasone mouth rinse (Stomatitis sub-study) | Drug | — | UNRESOLVED |
| Everolimus | Drug | Everolimus | ALIAS |
| Exemestane | Drug | Exemestane | ALIAS |
| Letrozole | Drug | Letrozole | ALIAS |
| Standard of care to treat stomatitis (Stomatitis sub-study) | Drug | — | UNRESOLVED |
Design
Arms and outcomes
Arms (1)
- type
- EXPERIMENTAL
- label
- Everolimus+letrozole/exemestane (first line and second line treatment)
- description
- Participants received everolimus in combination with letrozole as first-line treatment. Only participants who had disease progression in the first line setting (core phase) were offered second-line treatment (everolimus in combination with exemestane)
- interventionNames
- Drug: Everolimus
- Drug: Letrozole
- Drug: Exemestane
- Drug: Alcohol-free dexamethasone mouth rinse (Stomatitis sub-study)
- Drug: Standard of care to treat stomatitis (Stomatitis sub-study)
Primary outcomes (1)
- measure
- First-line Treatment: Progression-free Survival (PFS)
- timeFrame
- From the date of enrollment to the date of first documented progression or deaths, assessed up to approximately 2.8 years
- description
- PFS in the first line setting is defined as the time from the date of enrollment to the date of first documented progression based on local radiology review or death due to any cause. If a participant did not progress or was not known to have died at the date of the analysis cut-off or start of another antineoplastic therapy, the PFS date was censored to the date of last adequate tumor assessment prior to cut-off date or start of antineoplastic therapy. The median PFS was estimated and presented along with 95% confidence intervals. The primary analysis of PFS for first line was performed 12 months after the last patient's recruitment.
Eligibility
Eligibility (as posted)
- Sex
- Female
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * Patients with metastatic or locally advanced, unresectable breast cancer not amenable to curative treatment by surgery or radiotherapy * Histological or cytological confirmation of ER+/ HER2- breast cancer * Postmenopausal women * No prior treatment for metastatic breast cancer Exclusion Criteria: * Patients with only non-measurable lesions other than bone metastases (e.g., pleural effusion, ascites, etc) * Patients who had received prior hormonal or any other systemic therapy for metastatic breast cancer. Patients might have received prior neoadjuvant or adjuvant endocrine therapy. In the case of neoadjuvant or adjuvant NSAI (letrozole/anastrozole) therapy patients must have completed therapy at least 1 year prior to study enrollment. * Previous treatment with mTOR inhibitors. * Known hypersensitivity to mTOR inhibitors, e.g., sirolimus (rapamycin). Other protocol-defined inclusion/exclusion criteria might apply
References
Publications (1)
- DERIVEDRoyce M, Bachelot T, Villanueva C, Ozguroglu M, Azevedo SJ, Cruz FM, Debled M, Hegg R, Toyama T, Falkson C, Jeong J, Srimuninnimit V, Gradishar WJ, Arce C, Ridolfi A, Lin C, Cardoso F. Everolimus Plus Endocrine Therapy for Postmenopausal Women With Estrogen Receptor-Positive, Human Epidermal Growth Factor Receptor 2-Negative Advanced Breast Cancer: A Clinical Trial. JAMA Oncol. 2018 Jul 1;4(7):977-984. doi: 10.1001/jamaoncol.2018.0060. PMID 29566104