The purpose of this study is to compare the incidence of cardiac dysfunction in subjects with human epidermal growth factor receptor 2 (HER2) positive breast cancer treated with either doxorubicin or pegylated liposomal doxorubicin (PLD), both in combination with trastuzumab.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
181
doxorubicin 60 mg/m\^2 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)
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)
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
Number of Participants Who Experienced Cardiac Events (Level 1 or 2) or Inability to Administer Trastuzumab During the 8 Cycles of Chemotherapy
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: During the 8 courses of chemotherapy
Number of Participants Who Experienced Cardiac Events (Level 1 or 2) or Inability to Administer Trastuzumab During 1 Year of Trastuzumab Therapy
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.
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Time frame: During 1 year of trastuzumab therapy
Number of Participants Who Survived Without Relapse
Relapse-free survival would have been determined by Kaplan-Meier method. This was not calculated, since the 2 year follow-up was curtailed.
Time frame: Approximately 2 years