PRE-REGISTRATION ELIGIBILITY CRITERIA PRE-REGISTRATION ELIGIBILITY CRITERIA: PRE-REGISTRATION EXCLUSION CRITERIA EXCLUSION CRITERIA FOR PRE-REGISTRATION: PRE-REGISTRATION EXCLUSION CRITERIA PRE-REGISTRATION ELIGIBILITY PRE-REGISTION ELIGIBILITY ELIGIBILITY CRITERIA FOR PRE-REGISTRATION EXCLUSION CRITERIA FOR PRE-REGISTRATION PRE-REGISTRATION (PRE-SURGERY) ELIGIBILITY CRITERIA Pre-registration eligibility criteria continue to be met PRE-REGISTRATION ELIGIBILITY CRITERIA PRE-REGISTRATION ELIGIBILITY CRITERIA PRE-REGISTRATION EXCLUSION CRITERIA: Prior chemotherapy for this cancer (excluding initiation of best practice chemotherapy to be given as standard of care, which may be initiated after the pre-registration bone marrow collection but before final confirmation of eligibility and randomization) PRE-REGISTRATION EXCLUSION CRITERIA: Previous treatment with trastuzumab or any other Her2 targeted therapy REGISTRATION EXCLUSION CRITERIA: Prior chemotherapy for this cancer (excluding initiation of best practice chemotherapy to be given as standard of care, which may be initiated after the pre-registration bone marrow collection but before final confirmation of eligibility and randomization) PRE-REGISTRATION EXCLUSION CRITERIA PRE-REGISTRATION ELIGIBILITY CRITERIA: Pre-procedure Exclusion Criteria PATIENT PRE-REGISTRATION ELIGIBILITY CRITERIA: PRE-REGISTRATION EXCLUSION PRE-REGISTRATION EXCLUSION: PRE-REGISTRATION EXCLUSION CRITERIA PRE-REGISTRATION EXCLUSION CRITERIA PRE-REGISTRATION EXCLUSION CRITERIA PRE-REGISTRATION EXCLUSION CRITERIA PRE-REGISTRATION ELIGIBILITY CRITERIA