The purpose of this study is to determine the toxicity and anti-tumor activity of nab-paclitaxel 100mg/m\^2 administered weekly in a 4-week cycle as first line therapy to patients with metastatic breast cancer who received taxanes as part of their adjuvant therapy and patients who did not receive taxanes as part of their adjuvant therapy.
This is an open-label, phase II study to determine the toxicity and antitumor activity of ABI-007 100 mg/m2 administered weekly for 3 weeks followed by a rest week (4-week cycle) as first line therapy to patients with metastatic breast cancer in the following 2 cohorts: Patients who have received a taxane as part of their adjuvant therapy, and patients who did not receive a taxane as part of their adjuvant therapy. Patients will be assessed for antitumor response every 8 weeks. The last subject received study treatment 11DEC2012. The study was terminated on 31 May 2013 via a notification letter to all investigators on 14 May 2013.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
123
100 mg/m\^2 ABI-007 weekly for 3 weeks followed by 1 week rest
BC Cancer Agency-Burnaby
Burnaby, British Columbia, Canada
Lions Gate Hospital
North Vancouver, British Columbia, Canada
B.C.C.A Vancouver Island Center
Victoria, British Columbia, Canada
Percentage of Participants With Objective Confirmed Complete or Partial Overall Response According to Response Evaluation Criteria in Solid Tumors (RECIST) Version 1.0 Based on Investigator and Independent Reviewers
Overall response rate (ORR) is complete response (CR) + partial response (PR). Complete response (CR): The disappearance of all known disease and no new sites or disease related symptoms confirmed at least 4 weeks after initial documentation. All sites must be assessed, including non-measurable sites, such as effusions, or markers. Disappearance of all non-target lesions. The normalization of tumor marker level confirmed at least 4 weeks after initial documentation. Partial response (PR): At least a 30% decrease in the sum of the longest diameters of target lesions, taking as a reference the baseline sum of the longest diameters confirmed at least 4 weeks after initial documentation. PR is also recorded when all measurable disease has completely disappeared, but a non-measurable component (i.e., ascites) is still present but not progressing. As well as persistence of one or more non-target lesion(s) and/or the maintenance of tumor marker level above the normal limits
Time frame: Every 8 weeks from study start until disease progression; Up to 61 months
Percentage of Participants With Disease Control
Disease control was defined as stable disease (SD) for ≥ 16 weeks or complete response (CR) or partial response (PR). Response was evaluated by the Investigator and by an independent reviewer using Response Evaluation Criteria in Solid Tumors (RECIST) guidelines version 1.0. See Outcome #1 for definitions of CR and PR. RECIST defines SD for target lesions as neither sufficient shrinkage to qualify for partial response nor sufficient increase to qualify for progressive disease, no occurrence of progression disease for non-target lesions, and no new lesions.
Time frame: Every 8 weeks from study start until disease progression; Up to 61 months
Progression-free Survival (PFS)
PFS was defined as the time from the first dose of study drug to the start of progression or patient death (any cause), whichever occurred first. Participants who did not have progression or did not die were censored at the last known time the participant was progression free. Participants who initiated other anticancer therapy prior to progression were censored at the time when new anticancer therapy was initiated.
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Dr. H. Bliss Murphy Cancer Center
St. John's, Newfoundland and Labrador, Canada
The Royal Victoria Hospital
Barrie, Ontario, Canada
London Regional Cancer Centre
London, Ontario, Canada
Mount Sinai Hospital
Toronto, Ontario, Canada
St. Michael's Hospital
Toronto, Ontario, Canada
Toronto Synnybrook Cancer Centre
Toronto, Ontario, Canada
Windsor Regional Hospital
Windsor, Ontario, Canada
...and 4 more locations
Time frame: Study start until disease progression, death, or up to data cut off of 31 May 2013; up to 61 months
Duration of Response Based on Independent Reviewer Assessment
Duration of response was defined as progression-free survival in responders, i.e. as the time between the start of a complete response (CR) or partial response (PR) and the start of progressive disease (PD) or patient death from any cause, whichever occurred first. Participants who did not have progression or had not died were censored at the last known time the participant was progression free. Participants who had initiated other anticancer therapy prior to progression were censored at the time when new anticancer therapy was initiated. CR and PR were defined in outcome #1. Progressive disease was defined as at least a 20% increase in the sum of the longest diameters of target lesions; or the appearance of one or more new lesions; or the unequivocal progression of a non-target lesion. Response was evaluated using Response Evaluation Criteria in Solid Tumors (RECIST).
Time frame: Initial response until disease progression; or until data cut off 31 May 2013; up to 61 months
Duration of Response Based on Investigator Assessment
Duration of response was defined as progression-free survival in responders, i.e. as the time between the start of a complete response (CR) or partial response (PR) and the start of progressive disease (PD) or patient death from any cause, whichever occurred first. Participants who did not have progression or had not died were censored at the last known time the participant was progression free. Participants who had initiated other anticancer therapy prior to progression were censored at the time when new anticancer therapy was initiated. Complete response (CR) and partial response (PR) were defined in outcome #1. Progressive disease was defined as at least a 20% increase in the sum of the longest diameters of target lesions; or the appearance of one or more new lesions; or the unequivocal progression of a non-target lesion. Response was evaluated using Response Evaluation Criteria in Solid Tumors (RECIST).
Time frame: Initial response until disease progression; or until data cut off 31 May 2013; up to 61 months
Patient Survival
Participant survival was the time from the first dose of study drug to participant death from any cause. Participants who did not die were censored at the last known time the participant was alive.
Time frame: Study start until death, or until data cut-off 31 May 2013; up to 61 months
Number of Participants Experiencing Dose Reductions, Interruptions, or Dose Delays of Study Drug
The number of participants with dose reductions, dose interruptions and dose delays that occurred during the treatment period. Dose reductions, interruptions and delays are typically caused by clinically significant laboratory abnormalities and /or treatment emergent adverse events/toxicities.
Time frame: Day 1 of study drug to Day 940; data cut off 31 May 2013
Number of Participants With Treatment-Emergent Adverse Events
Count of study participants who had at least one treatment-emergent adverse event (TEAE) defined as any adverse event that began or worsened in grade after the start of study drug through 30 days after the last dose of study drug. The National Cancer Institute (NCI)'s Common Terminology Criteria for AEs (CTCAE) was used to grade AE severity: severity grade 3= severe and undesirable AE. Severity grade 4= life-threatening or disabling AE. Severity grade 5 = death.
Time frame: Day 1 to Day 940