About this trial
This a phase 1 study to evaluate the safety and preliminary efficacy of cisplatin combined with bortezomib in patients with recurrent or metastatic breast cancer.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Women aged 18 years and above with pathologically confirmed recurrent or metastatic advanced breast cancer ;
The patient has tumor specimens (formalin-fixed, paraffin-embedded or fresh pre-treated recurrent tumor tissue);
Patients who have failed standard treatment in the late stage;
At least one measurable lesion;
Disqualifiers
Patients with acute active hepatitis B or acute active hepatitis C;
Any serious underlying disease, comorbidity and active infection
Currently receiving other anti-tumor treatments;
History of epilepsy or epileptic-induced condition;
Trial design
Sequential
Treatments tested in this trial
Bortezomib (B)
Drug1.3mg/m2, IV, D1, D4, D8 and D11, every 3 weeks
Cisplatin (CDDP)
Drug50mg/m2, IV, D1-3, every 3 weeks
Bortezomib (B)
Drug1.5mg/m2, IV, D1, D4, D8 and D11, every 3 weeks
Bortezomib (B)
Drug1.7mg/m2, IV, D1, D4, D8 and D11, every 3 weeks
Cisplatin (CDDP)
Drug70mg/m2, IV, D1-3, every 3 weeks
Treatment groups
6
Treatment groupsSee each treatment group below.
Trial outcomes
Primary outcomes
Dose-limiting toxicities (DLTs)
The DLT assessment period is from day 1 to day 21 of the subject's first dose plus 24 hours after the second dose, that is, 22 days. Each dose group must first enroll 3 subjects. If no DLT occurs in the first cycle (within 28 days after the first dose), the dose will be increased to the next cohort; if 1 subject develops DLT, 3 subjects will be added to the cohort, and if no DLT occurs in the last 3 subjects, the dose will be increased to the next dose. If 2 or more subjects in 3 or 6 subjects in a dose group develop DLT, the dose escalation will be stopped, and the previous dose of the dose will be the MTD. DLT is defined as a treatment-related adverse event of Grade 3 or higher, based on the Common Terminology Criteria for Adverse Events (CTCAE) v5.0.
Maximum Tolerated Dose (MTD)
If 2 or more subjects in 3 or 6 subjects in a dose group develop DLT, the dose escalation will be stopped , and the previous dose of the dose will be the MTD. If the MTD is not reached in this trial, the researchers will discuss whether to continue the subsequent escalation trial.
Secondary outcomes
Progression- free survival ( PFS )
PFS assessed by investigators according to RECIST version 1.1 criteria.
Objective Response Rate (ORR)
ORR assessed by investigators according to RECIST version 1.1 criteria.
Disease Control Rate (DCR)
DCR assessed by investigators according to RECIST version 1.1 criteria.
Area Under the Curve (AUC)
The area under the plasma concentration-time curve (AUC) will be measured to evaluate the systemic exposure of bortezomib and cisplatin. Blood samples will be collected at specified time points to calculate AUC using non-compartmental analysis.
Sponsors and contacts
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