Share
Save
Evaluating the Efficacy and Safety of Bevacizumab, Carboplatin, Gemcitabine and Atezolizumab in Breast Cancer
The study hypothesise that the combination of carboplatin, gemcitabine, bevacizumab and atezolizumab may be synergistic and improve outcomes for patients with early relapsed TNBC by overcoming mechanisms of immune resistance and thus potentiating greater and more durable responses to immune checkpoint inhibitor therapy. Early relapsing TNBC represents a high priority, unmet need whereby effective therapeutic strategies are urgently needed.
Study details:
This is a multi-center, single arm phase II study designed to evaluate the efficacy and safety of atezolizumab plus bevacizumab plus carboplatin plus gemcitabine in patients with locally recurrent, inoperable or metastatic recurrent PD-L1 positive or stromal TIL positive TNBC (Triple Negative Breast Cancer). Assessment of Programmed death-ligand 1 (PD-L1) status will be available centrally for patients in which PD-L1 testing or stromal TIL testing has not been performed or is not available. In such cases, patients will be required to sign a pre-screening consent form allowing collection and testing of archival tumour samples for PD-L1 status.
Patient's that are PD-L1 positive and who fulfil the remaining study eligibility criteria will then be offered participation into the main BELLA study. Following confirmation of eligibility and registration to the main study, patients will receive treatment as outlined in Table 1 until disease progression according to RECIST 1. 1, unacceptable toxicity or patient withdrawal.
In the absence of disease progression, the discontinuation of atezolizumab, bevacizumab, carboplatin or gemcitabine (owing to AEs) can occur independently. In the event of ongoing clinical benefit but disease progression, treatment continuation may occur if approved by the CPI. Table 1:.
Order Treatment Dose Dose Frequency Route of Administration. 1. Atezolizumab 1200 mg Day 1 of each 21 day cycle IV.
2. Bevacizumab 15 mg/kg Day 1 of each 21 day cycle IV. 3.
Gemcitabine 1000 mg/m2 Day 1 and 8 of each 21 day cycle IV. 4. Carboplatin AUC 5 Day 1 of each 21 day cycle IV.
Tumour response will be evaluated according to RECIST 1. 1. Any evaluable and measurable disease must be documented at screening and re-assessed every 6 weeks from cycle 1 - day 1, regardless of any dose delays.
CT or MRI scans should include chest, abdomen, and pelvis. CT or MRI scans of the brain should be completed at screening and subsequently performed if clinically indicated. At the Investigator's discretion, CT or MRI scans may be repeated at any time if progressive disease is suspected.
Imaging based assessments should always be completed rather than clinical assessment to determine response. Patients who discontinue treatment for any reason will have an End of Treatment visit 30 days after the last dose of treatment after which, patients will move into the follow-up phase of the study where they will be assessed on a 3 monthly basis. Patients with progressive disease will be followed for survival only and patients who discontinue treatment for other reasons will be followed for progression and survival.
All patients will be followed up for 2 years after the last patient has been commenced treatment. There will be 31 patients recruited into the study. If a patient does not receive any protocol treatments for any reason, that patient will be replaced in the study.
There are no requirements for follow-up on patients who do not commence treatment. It is expected that it will take 24 months to accrue the required 31 evaluable patients. Patients will be followed up until 2 years after the last patient has commenced treatment.
Translational Research:. 1. Pre-treatment archival FFPE sample collected at pre-screening or screening for the main study will be tested retrospectively at the completion of the trial for.
Quantification of PD-L1 expression and Quantification of TILs on H\&E slides. 2. Two fresh tumour tissue samples to be collected if deemed clinically feasible by the investigator: an "on-treatment" tumour sample should be collected during cycle 1, days 15-21 and a "post-progression" tumour sample should be collected ≥ 14 days after the last dose of bevacizumab, and prior to commence of a new therapy.
On-treatment FFPE sample will be tested for. Quantification of PD-L1 expression Quantification of TILs on H\&E slides. 3.
A whole blood sample will also be taken prior to the start of treatment, prior to day 1 of cycle 3, and at disease progression (EoT visit) for future research purposes for the assessment of biomarkers of immune activation in peripheral blood mononuclear cells. Optional biomarker research:. 1.
If the patient has consented to the Optional Biomarker Study, an additional whole blood sample will be taken on Cycle 1 Day 1 prior starting the treatment for germline whole-genome SNP genotyping to be performed retrospectively. 2. If the patient has consented to the Optional Biomarker Study, stool samples for microbiome analysis will be collected prior to the start of treatment, prior to day 1 of cycle 3, and at disease progression (EoT visit).
Microbiome analysis will be performed retrospectively.
Eligibility criteria
Researchers look for people who fit a certain description, called eligibility criteria. See if you qualify.
Inclusion criteria
Exclusion criteria
Eligibility
Age eligible for study : 18 and older
Healthy volunteers accepted : No
Gender eligible for study: All
Things to know
Study dates
Study start: 2021-03-01
Primary completion: 2025-09-01
Study completion finish: 2025-09-30
Study type
TREATMENT
Phase
PHASE2
Trial ID
NCT04739670
Intervention or treatment
DRUG: Atezolizumab
DRUG: Bevacizumab
DRUG: Gemcitabine
DRUG: Carboplatin
Conditions
- • Metastatic Triple Negative Breast Cancer
Find a site
Closest Location:
Royal North Shore
Research sites nearby
Select from list below to view details:
Royal North Shore
St Leonards, New South Wales, Australia
Mater Health
South Brisbane, Queensland, Australia
Monash Health
Melbourne, Victoria, Australia
Peter MacCallum Cancer Centre
Melbourne, Victoria, Australia
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Participant Group/Arm | Intervention/Treatment |
---|---|
EXPERIMENTAL: Atezolizumab, Bevacizumab, Gemcitabine and Carboplatin
| DRUG: Atezolizumab
|
What is the study measuring?
Primary outcome
Primary Outcome Measure | Primary Outcome Description | Primary Outcome Time Frame |
---|---|---|
Progression-free survival (PFS) | PFS is measured from treatment commencement to the first progression by RECIST 1.1, or death from any cause, whichever occurs first. | Assessed after commencement of treatment, until the last registered patient has been followed up for 2 years. |
Secondary outcome
Secondary Outcome Measure | Secondary Outcome Description | Secondary Outcome Time Frame |
---|---|---|
Adverse events (AEs) | AEs using the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) v5.0 | Through completion of treatment, maximum 30 months |
Objective Response Rate(ORR) | ORR, defined as the proportion of patients with an objective response (CR or PR) at any stage after commencement of treatment using RECIST 1.1 criteria | Through Study completion, until the last registered patient has been followed up for 2 years. |
Duration of response (DOR) | DOR is the time between the date of first response (CR/PR per RECIST1.1) to the date of first progression per RECIST1.1. Patients who died without progression will be censored on the date of their last tumour assessment. | Through Study completion, until the last registered patient has been followed up for 2 years. |
Overall survival (OS) | OS is the time from treatment commencement to the date of death due to any cause. | Through Study completion, until the last registered patient has been followed up for 2 years. |
Frequently Asked Questions
Please note: some questions and answers are submitted by anonymous patients or using AI, and have not been verified by Clinrol
No questions submitted. Be the first to ask a question!