HER3-mutant and HER2-not amplified metastatic breast cancer
Conditions
Brief summary
Clinical benefit rate (CBR), defined as the proportion of patients who achieved a complete response (CR), a partial response (PR), or had stable disease (SD) for 24 weeks or more, according to the investigator-assessed RECIST v1.1 criteria.
Detailed description
Progression-free survival (PFS), defined as the time from inclusion to progression or death; Objective response rate, defined as the proportion of patients who achieved a CR or PR according to the investigator-assessed RECIST v1.1 criteria; and duration of response, defined as the time between the first observation of a PR or a CR, and progressive disease or death, Adverse Events (AEs) and Serious Adverse Events (SAEs), per CTCAE v5.0, considered by the investigator as related to trastuzumab or tucatinib., QLQ-C30 QoL questionnaire with the QLQ-BR42 module will be filled at inclusion, at cycles 1 and 3 and at the end of the treatment., Exploratory: relationship between biomarkers (including, but not limited to, DNA, RNA and proteins analyses) in blood, plasma, and/or tumor and either (1) presence of an ERBB3 mutation and (2) treatment efficacy.
Interventions
Sponsors
Eligibility
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Clinical benefit rate (CBR), defined as the proportion of patients who achieved a complete response (CR), a partial response (PR), or had stable disease (SD) for 24 weeks or more, according to the investigator-assessed RECIST v1.1 criteria. | — |
Secondary
| Measure | Time frame |
|---|---|
| Progression-free survival (PFS), defined as the time from inclusion to progression or death; Objective response rate, defined as the proportion of patients who achieved a CR or PR according to the investigator-assessed RECIST v1.1 criteria; and duration of response, defined as the time between the first observation of a PR or a CR, and progressive disease or death, Adverse Events (AEs) and Serious Adverse Events (SAEs), per CTCAE v5.0, considered by the investigator as related to trastuzumab or tucatinib., QLQ-C30 QoL questionnaire with the QLQ-BR42 module will be filled at inclusion, at cycles 1 and 3 and at the end of the treatment., Exploratory: relationship between biomarkers (including, but not limited to, DNA, RNA and proteins analyses) in blood, plasma, and/or tumor and either (1) presence of an ERBB3 mutation and (2) treatment efficacy. | — |
Countries
France