NCT06492616 · Stemline Therapeutics, Inc.
A Study of Elacestrant Versus Standard Endocrine Therapy in Women and Men With ER+,HER2-, Early Breast Cancer With High Risk of Recurrence
(ELEGANT)
What this study is about
The primary goal of this study is to evaluate the effectiveness of elacestrant versus standard endocrine therapy in participants with node-positive, Estrogen Receptor-positive (ER+), Human Epidermal Growth Factor-2 negative (HER2-) early breast cancer with high risk of recurrence.
View original scientific description
The primary goal of this study is to evaluate the effectiveness of elacestrant versus standard endocrine therapy in participants with node-positive, Estrogen Receptor-positive (ER+), Human Epidermal Growth Factor-2 negative (HER2-) early breast cancer with high risk of recurrence.
Interventions
DRUG
Elacestrant
Administered as oral tablets
DRUG
Anastrozole
Administered as oral tablets
DRUG
Letrozole
Administered as oral tablets
DRUG
Exemestane
Administered as oral tablets
DRUG
Tamoxifen
Administered as oral tablets
Primary outcome measures
Invasive Breast Cancer-Free Survival (IBCFS)
Time frame: Up to 5 years
Assessed by the time from date of randomization to the date of first occurrence of: * Ipsilateral invasive breast tumor recurrence * Local/regional invasive breast cancer recurrence * Distant recurrence * Contralateral invasive breast cancer, or * Death attributable to any cause
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Histopathologically or cytologically confirmed ER-positive (≥ 10% by immunohistochemistry \[IHC\]), HER2-negative \[IHC = 0 or 1, or (IHC = 2 and in situ hybridization \[ISH\]-negative)\] on tumor biopsy or final surgical pathology specimen early stage resected invasive breast cancer without evidence of recurrence or distant metastases, per local laboratory, according to the American Society of Clinical Oncology (ASCO)/College of American Pathologists (CAP) guidelines
- Participants considered at high risk of recurrence at initial staging
- Participants who have received at least 24 months but not more than 60 months of endocrine therapy (AIs or tamoxifen) with or without a CDK 4 and CKD 6 inhibitor (CDK4/6i)
- Participants who received prior CDK4/6i or a poly adenosine diphosphate-ribose polymerase (PARP) inhibitor must have already completed or discontinued these treatments. Key
Exclusion criteria
- Participants with inflammatory breast cancer
Where
- Daphne, Alabama
- Chandler, Arizona
- Gilbert, Arizona
- Scottsdale, Arizona
- Tucson, Arizona
- Springdale, Arkansas
- Bakersfield, California
- Berkeley, California
- Beverly Hills, California
- Duarte, California
- Fremont, California
- Irvine, California
And 125 more locations — see the full list below.
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 8, 2026 · Source of record for eligibility and locations