A Study of Dasatinib (BMS-354825) in Patients With Advanced 'Triple-negative' Breast Cancer

The number of participants whose best response was CR, PR or SD (per the RECIST) at or after 16 weeks on study: CR: disappearance of all target/non-target lesions; PR: >=30% decrease in the sum of the LDs of target lesions relative to baseline sum LD; SD: neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD; PD: appearance of new lesion/s, or >=20% increase in the sum of the LD of target lesions, relative to the smallest sum LD recorded since treatment start, or unequivocal progression of existing non-target lesions.

The percentage of participants whose best response was CR, PR or SD (per the RECIST) at or after 16 weeks on study: CR: disappearance of all target/non-target lesions; PR: >=30% decrease in the sum of the LDs of target lesions relative to baseline sum LD; SD: neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD; PD: appearance of new lesion/s, or >=20% increase in the sum of the LD of target lesions, relative to the smallest sum LD recorded since treatment start, or unequivocal progression of existing non-target lesions.

PFS:time from first dose until the date that progressive disease (PD) or clinical PD (cPD) observed,per RECIST criteria.PD:appearance of new lesion/s,or >=20% increase in the sum of the LD of target lesions,relative to smallest sum LD recorded since treatment start,or unequivocal progression of existing non-target lesions;cPD:deterioration related to disease requiring treatment discontinuation,but without radiographic PD.Participants who died without PD were considered to have PD on the date of death.For participants who neither progressed nor died,date of the last tumor assessment was used.

Mean number of weeks of CR/PR (time from first date of CR/PR until first date PD observed. Tumor response defined per RECIST: CR: disappearance of all target/non-target lesions; PR: >=30% decrease in sum of LDs of target lesions relative to baseline sum LD; PD: appearance of new lesion or >=20% increase in sum of LD of target lesions relative to smallest sum LD or unequivocal progression of existing non-target lesions. Participants who died without reported PD were considered to have PD on date of death. For participants who neither progressed nor died, date of last tumor assessment used.

Mean plasma concentration was obtained directly from the concentration-time data.

Mean plasma concentration was obtained directly from the concentration-time data.

Collagen Type IV is a measure of anti-angiogenic activity. Plasma samples for assessment of change in concentration of Collagen Type IV were obtained and analyzed by enzyme-linked immunosorbent assay.

VEGFR2 is a measure of anti-angiogenic activity. Plasma samples for assessment of change in concentration of VEGFR2 were obtained and analyzed by enzyme-linked immunosorbent assay.

Tumor markers are indicators of tumor activity which may be used to predict clinical benefit and circulating biomarkers may reveal key mechanisms of action. Tissue staining was performed for caveolin, phospho-caveolin, EphA2 and insulin-like growth factor binding protein 2 (IGFBP2) markers using immunohistochemistry assays.

Pharmacogenomic analysis included the assessment of the relationship between clinical benefit and mRNA expression levels and between clinical benefit and protein phosphorylation. Tumor mRNA expression was analyzed in all available tissues. mRNA was extracted from 96 formalin-fixed paraffin-embedded tissue (FFPET) samples, amplified, and fluorescently labeled. Gene expression profiling was conducted using Affymetrix Human Genome U133A 2.0 DNA microarrays. mRNA expression is reported as quantile normalized RMA values.

An AE was defined as any new untoward medical occurrence or worsening of a pre-existing medical condition (even if not caused by the study drug). An SAE was defined as an AE that resulted in death, was life-threatening, required hospitalization (or prolongation of existing hospitalization), or was an important medical event.

AE=any new untoward medical occurrence/worsening of pre-existing medical condition.SAE=AE that resulted in death, was life-threatening, required hospitalization (or prolongation of existing hospitalization), or was an important medical event. Drug-related SAEs or AEs are those events with relationship to study therapy of certain, probable or possible.AEs were graded using the National Cancer Institute (NCI) Common Toxicity Criteria (CTC), v3: Grade 1=mild, 2=moderate, 3=severe, 4=life threatening, 5=death.Participants who discontinued the study due to any drug-related AEs were also recorded.

Most frequent drug-related AEs are those AEs with frequency >=25% in either group. Drug-related AEs are those events with relationship to study therapy of certain, probable or possible.

Abnormalities were graded according to the NCI CTC, version 3.0: Grade 1 = mild, Grade 2 = moderate, Grade 3 = severe, Grade 4 = life threatening. Grades 3 and 4 criteria are defined as follows: Granulocytes: Grade 3 <1.0 - 0.5 x 10^9/L; Grade 4, <0.5 x 10^9/L. Hemoglobin: Grade 3, <8.0 - 6.5 g/dL; Grade 4, <6.5 g/dL. Platelets: Grade 3, <50.0 - 25.0 x 10^9/L; Grade 4, <25.0 x 10^9/L. Leukocytes: Grade 3, <2.0 - 1.0 x 10^9/L; Grade 4, <1.0 x 10^9/L.

PT is a measure of the clotting ability of the blood. Abnormalities were graded according to the NCI CTC, version 3.0: Grade 1=mild, Grade 2=moderate, Grade 3=severe, Grade 4=life-threatening and 5=death.

PTT is a measure of the clotting ability of the blood. Abnormalities were graded according to the NCI CTC, version 3.0: Grade 1=mild, Grade 2=moderate, Grade 3=severe, Grade 4=life-threatening and 5=death.

Abnormalities were graded according to the NCI CTC, version 3.0: Grade 1 = mild, Grade 2 = moderate, Grade 3 = severe, Grade 4 = life threatening. Grade 3 and 4 criteria are defined as follows: ALT, AST and alkaline phosphatase: Grade 3: >5-20 x upper limit of normal (ULN), Grade 4: >20 x ULN.

Abnormalities were graded according to the NCI CTC, version 3.0: Grade 1 = mild, Grade 2 = moderate, Grade 3 = severe, Grade 4 = life threatening. Grade 3 and 4 criteria are defined as follows: Calcium: Grade 3-4 : <6.0 - <7.0 or >12.5 - >13.5 mg/dL, Potassium: Grade 3-4 : <2.5 - <3.0 or >6.0 - >7.0 mEq/L, Magnesium: Grade 3-4 : <0.6 - <0.8 or >2.46 - >6.6 mEq/L, Sodium:< 120- 130 or >155 - >160 mEq/L.

Abnormalities were graded according to the NCI CTC, version 3.0: Grade 1 = mild, Grade 2 = moderate, Grade 3 = severe, Grade 4 = life threatening. Grade 3 and 4 criteria are defined as follows: Creatinine: Grade 3-4 : > 3.0 -6.0 ULN (upper limit of normal),Bicarbonate: Grade 3-4: <16 -<22 mEq/L, Phosphorous: Grade 3-4 : <1.0 - <2.0 mg/dL, Bilirubin, total: Grade 3-4: >3.0 - >10.0 ULN.

ECGs were performed and all recordings were evaluated by the investigator. Abnormalities, if present at any study time point, were listed. The following ECG variables were collected: heart rate, PR interval, QRS width, and QT interval. Abnormalities in ECGs were defined by reference to institutional reports.

Vital signs included systolic and diastolic blood pressure and heart rate. The investigator used his or her judgement to decide whether or not the values were abnormal.