History of clinically significant or uncontrolled cardiac disease, including congestive heart failure (New York Heart Association functional classification >= 3), angina, myocardial infarction or ventricular arrhythmia. Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or Class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to enrollment Has a clinically significant cardiovascular disease such as unstable angina, myocardial infarction, or acute coronary syndrome within ?180 days prior to start of study treatment, symptomatic or uncontrolled arrhythmia, congestive heart failure, or any Class 3 or 4 cardiac disease as defined by the New York Heart Association Functional Classification Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization. Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association functional classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to enrollment on the study Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization Clinically significant cardiovascular disease such as unstable angina, myocardial infarction, or acute coronary syndrome within =<180 days prior to registration, symptomatic or uncontrolled arrhythmia, congestive heart failure, or any class 3 or 4 cardiac disease as defined by the New York Heart Association Functional Classification Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome =< 6 months prior to pre-randomization Clinically significant cardiovascular disease with uncontrolled arrhythmia, New York Association class 3 or 4 congestive heart failure, history of myocardial infarction within 6 months, or prolonged corrected QT (QTc) > 500 msec Any life-threatening illness, medical condition, or organ system dysfunction, including but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, active autoimmune disorder, or psychiatric illness/social situations that, in the investigator’s opinion, could compromise the subject’s safety or put the study outcomes at undue risk; currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to enrollment Clinically significant cardiovascular disease with uncontrolled arrhythmia, New York Association class 3 or 4 congestive heart failure, history of myocardial infarction within 6 months, or prolonged corrected QT (QTc) > 500 msec Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association functional classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to start of first study treatment Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to enrollment Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization History of clinically significant or uncontrolled cardiac disease, including congestive heart failure, angina, myocardial infarction, arrhythmia, including New York Heart Association functional classification of three Currently active clinically significant cardiovascular disease, such as uncontrolled arrhythmia, congestive heart failure, any class 3 or 4 cardiac disease, as defined by the New York Heart Association Functional Classification, or history of myocardial infarction within 6 months prior to first dose with study drug Currently active clinically significant cardiovascular disease such as uncontrolled arrhythmia, congestive heart failure, or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification, or history of myocardial infarction unstable angina, or acute coronary syndrome within 6 months prior to enrollment in the study Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Function Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to screening Currently active clinically significant cardiovascular disease such as uncontrolled arrhythmia, congestive heart failure, or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification, or history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization Currently active, clinically significant cardiovascular disease such as uncontrolled or symptomatic arrhythmias, class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification, or history of myocardial infarction, unstable angina or acute coronary syndrome within 6 months of screening Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, or psychiatric illness/social situations that would limit compliance with study requirements; currently active clinically significant cardiovascular disease such as uncontrolled arrhythmia, congestive heart failure or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification, or history of myocardial infarction, unstable angina or acute coronary syndrome within 6 months prior to randomization Currently active clinically significant cardiovascular disease such as uncontrolled arrhythmia, congestive heart failure, or any class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification, or history of myocardial infarction, unstable angina or acute coronary syndrome within 6 months prior to on-study registration Has a clinically significant cardiovascular disease such as unstable angina, myocardial infarction, or acute coronary syndrome within ?180 days prior to start of study treatment, symptomatic or uncontrolled arrhythmia, congestive heart failure, or any Class 3 or 4 cardiac disease as defined by the New York Heart Association Functional Classification Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or Class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization. Patients with a cardiac ejection fraction (as measured by either multi gated acquisition scan [MUGA] or echocardiogram) < 45% are excluded; currently active clinically significant cardiovascular disease such as uncontrolled arrhythmia, congestive heart failure, any class 3 or 4 cardiac disease as defined by the New York Heart Association Functional Classification, or history of myocardial infarction within 6 months prior to first dose with study drug Significant or uncontrolled intercurrent condition including, but not limited to:\r\n* Infection other than HIV, hepatitis B, or hepatitis C that is symptomatic or requires systemic treatment\r\n* Opportunistic infection within 60 days prior to enrollment\r\n* Currently active clinically significant cardiovascular disease such as uncontrolled arrhythmia, congestive heart failure, any class 3 or 4 cardiac disease as defined by the New York Heart Association Functional Classification, or history of myocardial infection within 6 months prior to enrollment\r\n* History of stroke or intracranial hemorrhage within 6 months prior to enrollment\r\n* History of class B or class C cirrhosis, per the modified Child-Pugh classification\r\n* Psychiatric illness that would limit compliance Currently active clinically significant cardiovascular disease such as uncontrolled arrhythmia, congestive heart failure, or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification, or history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to first dose with study drug Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to enrollment Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization EXCLUSION CRITERIA (PRIOR TO IBRUTINIB ADMINISTRATION): Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 3 or 4 congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or class 2 or higher congestive heart failure as defined by the New York Heart Association Functional Classification; or a history of myocardial infarction, unstable angina, or acute coronary syndrome within 6 months prior to randomization