本研究的主要目的是量度 imlunestrant 与标准激素治疗相比，在雌激素受体阳性（ER+）及人类表皮受体2阴性（HER2-）的早期乳腺癌参与者中的疗效。参与者必须已接受激素治疗两至五年，且其癌症复发风险必须高于平均水平。参与研究时间可长达10年。
适应症：Breast Neoplasms
入组条件
纳入标准
- Have a diagnosis of ER+, HER2- early-stage, resected, invasive breast cancer without evidence of distant metastasis.
- Participants must have received at least 24 months but not more than 60 months of any adjuvant ET, from time of adjuvant ET initiation.
- Participants may have received (neo) adjuvant chemotherapy and/or targeted therapy with a CDK4/6- or PARP- inhibitor.
- Must have an increased risk of disease recurrence based on clinical-pathological risk features.
- Have a Performance Status of 0 or 1 on the Eastern Cooperative Oncology Group scale.
- Have adequate organ function.
排除标准
- Have any evidence of metastatic disease (including contralateral ALN) or inflammatory breast cancer at primary breast cancer diagnosis.
- Participants with more than a 6-month consecutive gap in therapy during the course of prior adjuvant ET.
- Participants who have completed or discontinued prior adjuvant ET \>6 months prior to screening.
- Participants with a history of previous breast cancer are excluded, with the exception of ipsilateral DCIS treated by locoregional therapy alone ≥5 years ago.
- Pregnant, breastfeeding, or expecting to conceive or father children within the projected duration of the trial, starting with the screening visit through 180 days after the last dose of study intervention.
- Participant has previously received ET of any duration for breast cancer prevention (tamoxifen or AIs) or raloxifene.
- Participants with a history of any other cancer.
- Have serious preexisting medical conditions that, in the judgment of the investigator, would preclude participation in this study.
入组条件维持 ClinicalTrials.gov 原始英文登记资料，实际入组资格以研究团队的正式评估与受试者知情同意书为准。资料来源：ClinicalTrials.gov，每两周自动更新，最后同步：2026年10月8日。