MLN2480

An AE is defined as any untoward medical occurrence in a participant administered a pharmaceutical product; the untoward medical occurrence does not necessarily have a causal relationship with this treatment. An SAE means any untoward medical occurrence that at any dose results in death, is life-threatening, requires in patient hospitalization or prolongation of an existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly/birth defect or is a medically important event.

DLT was defined using National Cancer Institute Common Terminology Criteria for Adverse Events version 4.03 and included: any drug-related hematologic toxicity ≥Grade 4 with the exception of Grade 4 neutropenia \<7 days duration; Grade 3 or 4 neutropenia with fever \>38.5 degrees Celsius and/or infection or neutropenia requiring colony-stimulating factor OR non-hematologic DLTs that were any Grade 3, 4, or 5 toxicity with the following exceptions: Grade 3 nausea, vomiting, diarrhea, and dehydration occurring in a setting of inadequate treatment; inadequately treated hypersensitivity reactions; Grade 3 elevated transaminases or urine electrolyte abnormality ≤1 week in duration; Grade 3 serum electrolyte abnormality ≤72 hours in duration. DLTs also included: drug-related adverse experience that lead to a dose modification; unresolved drug-related toxicity resulted in delay in initiation of Cycle 2.

Dose limiting AEs were evaluated according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 4.03. Dose limiting AEs were defined as any of the following events: Grade 4 neutropenia for more than 7 days under maximum supportive therapy; febrile neutropenia; platelet counts decreased of Grade 3 requiring platelet transfusion or blood platelet decreased of Grade 4; if Course 2 was not initiated within 14 days due to AE related to the protocol treatment; Grade 3 or higher non-hematologic toxicity that was considered clinically significant, except the following cases, Grade 3 gastrointestinal symptoms that could be controlled with supportive therapy (example, appropriate use of antiemetics, antidiarrheals), and Grade 3 or higher electrolyte abnormalities that were not deemed clinically significant.

ECOG performance score was measured on 6 point scale to assess participant's performance status, where: 0 (fully active, able to carry on all pre-disease activities without restriction); 1 (restricted in physically strenuous activity, but ambulatory and able to carry out light or sedentary work); 2 (ambulatory greater than(\>) 50 percent (%) of waking hours), capable of all self-care, unable to carry out any work activities); 3 (capable of only limited self-care, confined to bed or chair \>50% of waking hours); 4(completely disabled, cannot carry on any self-care, totally confined to bed or chair); 5 (dead). A higher score indicated greater functional impairment.