Statement: 16/179  patients in the primary trial Experienced Cardiac Events, with the majority of those coming from cohort 2.
Primary_evidence: Outcome Measurement:    Number of Participants Who Experienced Cardiac Events (Level 1 or 2), or Inability to Administer Trastuzumab Either During the 8 Cycles of Chemotherapy or According to Package Insert for a Total Duration of 1 Year   Cardiac events defined as:   Level 1: Cardiac death due to heart failure (HF), myocardial infarction or arrhythmia, or probable cardiac death defined as sudden, unexpected death within 24 hours of a definite or probable cardiac event, or severe symptomatic HF, concomitant with a left ventricular ejection fraction (LVEF) drop of >10 percentage points from baseline and to 50% LVEF   Level 2: Asymptomatic systolic dysfunction or mildly symptomatic HF concomitant with an LVEF drop of >10 percentage points from baseline and to <50% LVEF; the LVEF drop was to have been confirmed within 3-4 weeks.   Time frame: 8 cycles of chemotherapy and subsequently one year of planned trastuzumab treatment Results 1:    Arm/Group Title: Pegylated Liposomal Doxorubicin (PLD) Based Regimen   Arm/Group Description: PLD 35 mg/m^2 IV over 60 minutes + cyclophosphamide 600 mg/m^2 IV over 30-90 minutes given every 21 days + trastuzumab 2 mg/kg IV over 30 minutes (first dose 4 mg/kg IV over 90 minutes) given once weekly for 4 courses (12 weeks) followed by Paclitaxel 80 mg/m^2 IV over 60 minutes with trastuzumab 2 mg/kg IV over 30 minutes given weekly for 12 weeks (4 courses)   Overall Number of Participants Analyzed: 120   Measure Type: Number   Unit of Measure: Participants  5 Results 2:    Arm/Group Title: Doxorubicin Based Regimen   Arm/Group Description: doxorubicin 60 mg/m^2 intravenous (IV) push + cyclophosphamide 600 mg/m^2 IV over 30-90 minutes given every 21 days for 4 courses (12 weeks) followed by Paclitaxel 80 mg/m^2 IV over 60 minutes with trastuzumab 2 mg/kg IV over 30 minutes (first administration 4 mg/kg IV over 90 minutes) given weekly for 12 weeks (4 courses)   Overall Number of Participants Analyzed: 59   Measure Type: Number   Unit of Measure: Participants  11