Patients who have undergone major surgery within days or subcutaneous venous access device placement within days prior to study enrollment Major surgery, defined as any surgical procedure that involves general anesthesia and a significant incision (i.e. larger than that required for placement of central venous access, percutaneous feeding tube, or biopsy) within days of the first dose of study drug Minor surgery/subcutaneous venous access device placement within days prior to first dose of protocol therapy Central line placement or subcutaneous port placement is not considered major surgery but must be placed at least days prior to study drug administration. Major surgery, defined as any surgical procedure that involves general anesthesia and a significant incision (i.e., larger than what is required for placement of central venous access, percutaneous feeding tube, or biopsy),within days prior to randomization or anticipated surgery during the study period The patient has undergone major surgery within days prior to enrollment, or subcutaneous venous access device placement within days prior to enrollment The patient has undergone major surgery within days prior to enrollment, or subcutaneous venous access device placement within days prior to enrollment Have had major surgery within days of starting therapy. Placement of a venous access device within days of starting therapy is allowed. Central line placement or subcutaneous port placement is not considered major surgery but must be placed at least days prior to study drug administration No major surgery within days prior to randomization, or subcutaneous venous access device placement within days prior to randomization Have undergone major surgery within days (? days) prior to randomization or subcutaneous venous access device placement within days (? days) prior to randomization. Major surgery, defined as any surgical procedure that involves general anesthesia and a significant incision (i.e., larger than what is required for placement of central venous access, percutaneous feeding tube) within days of CD Minor surgical procedure(s) within days of enrollment or randomization, or not yet recovered from prior surgery (placement of central venous access device, fine needle aspiration, or endoscopic biliary stent ? day before enrollment or randomization is acceptable) have experienced any of the following: a major surgical procedure, significant traumatic injury, non-healing wound, peptic ulcer, or bone fracture less than or equal to days prior to enrollment, or placement of a subcutaneous venous access device less than or equal to days prior to the first dose of study treatment unless the procedure is of low risk of bleeding in the judgment of the investigator Undergone major surgery within days prior to first dose of study drug or have subcutaneous venous access device placement within days prior to first dose. Additional Exclusion Criteria For Part D The participant underwent major surgery within days prior to randomization or central venous access device placement within days prior to randomization. Central line placement or subcutaneous port placement is not considered major surgery. External central lines must be placed at least days prior to enrollment and subcutaneous ports must be placed at least days prior to enrollment. Recent major surgery within the prior weeks; (mediastinoscopy or placement of a central venous access will be allowed as long as placement was more than days prior to receiving study drug) Minor surgical procedures except placement of tunneled central venous access device within days prior to enrollment The participant has undergone major surgery within days prior to randomization or has undergone central venous access device placement within days prior to randomization No major surgery within days prior to registration for protocol therapy. Placement of a venous access device within days prior to registration for protocol therapy is allowed. Major surgery, defined as any surgical procedure that involves general anesthesia and a significant incision (ie, larger than what is required for placement of central venous access, percutaneous feeding tube, or biopsy) within days of first dose of study drug Minor surgical procedures, placement of tunneled central venous access device within days prior to randomization/enrollment Has undergone major surgery within weeks prior to randomization, or subcutaneous venous access device placement within days prior to randomization Major surgery within days prior the first dose of study medication, or subcutaneous venous access device placement within days prior to randomization Placement of a subcutaneous venous access device within days prior to the first dose of study treatment unless the procedure is judged of low risk of bleeding.