Combination Therapy With MYOCET® (Doxorubicin HCL Liposome for Injection) in Participants With HER2-Positive Breast Cancer

The pCR of breast was based upon histologic examination, as confirmed by a central panel of experts, of resected tissue .

CR: Disappearance of the lesions and no new lesions. In case of bone metastasis a CR is represented by the normalization of radiography or the complete sclerotic healing of lytic area.

PR: In the case of bidimensionally measurable lesions/tumors, a decrease by at least 50% of the sum of the products of the largest perpendicular diameters of each individual lesion/tumor. In the case of unidimensionally measurable lesions a decrease by at least 50% in the largest linear tumour measurement. In the case of non-measurable but evaluable lesions an appreciable change of lesions referable to disease improvement. For bone lesions partial decrease in size or recalcification of lytic areas. No lesion should have progressed and no new lesion should appear.

Occurrence of Class III or IV (NYHA) CHF has been reported. Class III: Participants with cardiac disease resulting in marked limitation of physical activity. They are comfortable at rest. Less than ordinary activity causes fatigue, palpitation, dyspnea, or anginal pain. Class IV: Participants with cardiac disease resulting in inability to carry on any physical activity without discomfort. Symptoms of heart failure or the anginal syndrome may be present even at rest. If any physical activity is undertaken, discomfort is increased.

The LVEF is a fraction of blood (in percent) pumped out of the left ventricle of the heart (the main pumping chamber). LVEF was measured using multigated acquisition (MUGA) or echocardiography.

An adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. A serious adverse event (SAE) was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. AEs included both SAEs and non-serious AEs. The TEAE was an AE that began or worsened after treatment with study drug. A summary of other non-serious AEs and all SAEs, regardless of causality is located in the 'Reported AE section'.

Progression was defined as a 25% or more increase in the size of the lesion or appearance of new lesion. If the participant did not develop an event (disease progression or death), the participant was censored at the last known tumor assessment date (or last follow-up visit without progression documented).

The pCR of breast and node was based upon histologic examination, as confirmed by a central panel of experts, of breast tissue resected.

AEs were recorded and graded per the NCI CTCAE scale. The NCI CTCAE is a toxicity scale used to grade the severity of adverse events experienced with cancer treatment. Grade 1= Mild; Grade 2= Moderate; Grade 3= Severe; Grade 4= Life-threatening or disabling; Grade 5= Death related to AE. For summaries for the toxicity grade, participants were counted once at the greatest NCI CTCAE grade.