Study of Albumin-bound Paclitaxel (Abraxane) in Combination With Carboplatin and Herceptin in Patients With Advanced Breast Cancer

Percentage of participants who achieved an objective confirmed complete or partial overall response based on Response Evaluation Criteria in Solid Tumors (RECIST) version 1.0. A complete response (CR) is the disappearance of all known disease and no new sites or disease related symptoms confirmed at least 4 weeks after initial documentation. A partial response (PR) is 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, or with the persistence of one or more non-target lesions and/or the maintenance of tumor marker level above the normal limits.

Total response was defined as the percentage of participants with stable disease (SD) for ≥ 16 weeks or complete or partial overall response. Stable disease was defined as neither sufficient shrinkage to qualify for partial response nor sufficient increase to qualify for progressive disease. Progressive disease is at least a 20% increase in the sum of the longest diameters of target lesions, taking as reference the smallest sum of the longest diameters recorded since the treatment started; or the appearance of one or more new lesions; or the unequivocal progression of a non-target lesion.

Time to disease progression was measured from the date of first dose of study drug to the start of disease progression. Patients who did not have disease progression at the end of follow-up were censored at the last known time that the patient was evaluated for progression. Progression is at least a 20% increase in the sum of the longest diameters of target lesions, taking as reference the smallest sum of the longest diameters recorded since the treatment started; or the appearance of one or more new lesions; or the unequivocal progression of a non-target lesion. Time to disease progression was summarized using Kaplan-Meier methods.

Duration of response was evaluated by measuring progression-free survival for participants with a complete response or partial response. Progression-free survival was defined as the time from the first dose of study drug to the start of progression or patient death (whichever occurred first). Participants who did not have progression or were still alive were censored at the last known time the patient was progression free. Patients that initiated other anticancer therapy prior to progression were censored at the time when new anticancer therapy was initiated. Progression is at least a 20% increase in the sum of the longest diameters of target lesions, taking as reference the smallest sum of the longest diameters recorded since the treatment started; or the appearance of one or more new lesions; or the unequivocal progression of a non-target lesion.

Overall survival was defined as the time from the day of randomization to patient death (due to any cause), as assessed by post study follow-up on a monthly basis for 3 months and every 3 months. Participants still alive were censored at the last known time that the patient was alive. Patient survival was estimated using Kaplan-Meier methods.

A Treatment-emergent AE was any AE that began or worsened after the start of study drug through 30 days after the last dose of study drug or end of study whichever is later. A treatment related toxicity was one considered by the investigator to be possibly, probably or definitely related to study drug. AEs were graded according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events v3.0 (CTCAE) on the following scale: Grade 1 = mild, Grade 2 = moderate, Grade 3 = severe, Grade 4 = life-threatening, Grade 5 = death. A serious adverse event (SAE) is any untoward medical occurrence at any dose that: is fatal or life-threatening; results in persistent or significant disability or incapacity; requires or prolongs in-patient hospitalization; is a congenital anomaly/birth defect in the offspring of a patient; and conditions not included in the above that may jeopardize the patient or may require intervention to prevent one of the outcomes listed above