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This study evaluates the safety of the drug Elacestrant in patients with ER-positive/HER2-negative, ESR1-mutated metastatic breast cancer. Postmenopausal women aged 18 and older whose disease has progressed after at least one line of hormone therapy can take part. It is a study without an assigned phase and is still enrolling participants.
The summary above is a plain-language rendering of the official record. The original English title is shown for reference.
Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.
Inclusion Criteria: * 1\. must have a histologically or cytologically confirmed diagnosis of breast cancer with evidence of locally advanced disease unsuitable for excision or radical radiotherapy, or evidence of metastatic disease unsuitable for radical treatment. * 2\. female ≥ 18 years of age * 3\. female subjects must be postmenopausal (meeting any of the following criteria is sufficient) a) Has undergone oophorectomy. b) Age ≥ 60 years. c) 40 years old \< age ≤ 60 years old with 1 year of menopause. d) Age \<60 years and receiving ovarian suppression therapy. * 4\. ER-positive and HER2-negative status and ESR1-mutation positive must be confirmed. * 5\. must have progressed on at least one line of endocrine therapy prior to enrollment, including monotherapy or combination therapy. * 6\. have normal organ function (as assessed by the investigator). Exclusion Criteria: * 1\. women who are pregnant or breastfeeding * 2\. known difficulties in tolerating oral medications, or conditions that interfere with the absorption of oral medications or allergies to medications and their excitements * 3\. other conditions that make enrollment in the study unsuitable, at the discretion of the investigator