About this trial
The study will evaluate the safety and efficacy of YL202, when compared with treatment of physician's choice (eribulin, capecitabine, vinorelbine, gemcitabine or sacituzumab govitecan) in participants with unresectable locally advanced, recurrent or metastatic hormone receptor-positive and human epidermal growth factor receptor 2-negative (HR+/HER2-) breast cancer who had failed at least one line of chemotherapy.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Have been informed of the study before the start of the study and voluntarily sign name and date on the informed consent form.
Histologically and/or cytologically confirmed locally advanced or metastatic HR+/HER2- breast cancer who are not candidates for curative surgery or radiotherapy.
Patients who had failed at least one line of systemic chemotherapy in unresectable locally advanced, recurrent, or metastatic stage.
Have at least 1 extracranial measurable lesion as a target lesion per RECIST 1.1.
Disqualifiers
Have prior treatment with an agent targeting HER3.
Have prior treatment with topoisomerase I inhibitor or an ADC that consists of topoisomerase I inhibitor.
Have insufficient washout period for prior anticancer therapy prior to first dose of the study drug.
Have major surgery (excluding diagnostic surgery) within 4 weeks prior to the first dose of study drug or anticipation of major surgery during the study.
Trial design
Parallel
Treatments tested in this trial
YL202
DrugIV infusion on day 1 of each 21 day cycle
Eribulin
Drug1.4 mg/m2, IV infusion on day 1 and Day 8 of each 21 day cycle
Capecitabine
Drug1000 or 1250 mg/m2, po, bid, from day 1 to Day 14 of each 21 day cycle
Gemcitabine
Drug1000 mg/m2, IV infusion on day 1 and Day 8 of each 21 day cycle
Vinorelbine
Drug25 mg/m2, IV infusion on day 1 and Day 8 of each 21 day cycle
Sacituzumab govitecan
Drug10 mg/kg, IV infusion on day 1 and Day 8 of each 21 day cycle
Treatment groups
Trial outcomes
Primary outcomes
Progression-free survival (PFS) assessed by BIRC per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1.
PFS is defined as time from randomization until disease progression or death due to any cause.
Secondary outcomes
Overall Survival (OS)
OS is defined as time from randomization until the date of death due to any cause.
Progression-free survival (PFS) assessed by the investigators per RECIST V 1.1
PFS is defined as time from randomization until disease progression or death due to any cause.
Objective Response Rate (ORR)
Objective response rate is defined as the proportion of participants who have a CR or PR, as determined by the BICR/Investigator assessment, per RECIST 1.1.
Duration of Response (DoR)
Duration of response is defined as the time from the date of first documented confirmed response until disease progression, as determined by BICR/Investigator assessment or death due to any cause.
Sponsors and contacts
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