A DLT was defined as occurrence of any treatment-emergent adverse event (TEAE) in Phase 1 Parts 1 and 2. DLT included all TEAE of specified grades such as 1) Hematologic toxicities - any Grade 4 thrombocytopenia or neutropenia, anemia, febrile neutropenia, ≥ Grade 3 hemolysis, thrombocytopenia and 2) Nonhematologic toxicities - Grade 4 AE, nausea, vomiting, or diarrhea, electrolyte abnormality, ≥ Grade 3 aspartate aminotransferase (AST), alanine aminotransferase (ALT), or total bilirubin elevation, Grade 2 AST/ALT with symptomatic liver inflammation, AST or ALT \> 3 × upper limit of normal (ULN) and concurrent total bilirubin \> 2 × ULN without initial findings of cholestasis, and any other ≥ Grade 3 toxicity. A TEAE is any AE either reported for the first time or worsening of a pre-existing event after first dose of study drug and up to 100 days after last dose of study drug.

A DLT was defined as occurrence of any treatment-emergent adverse event (TEAE) in Phase 1 Parts 1 and 2. DLT included all TEAE of specified grades such as 1) Hematologic toxicities - any Grade 4 thrombocytopenia or neutropenia, anemia, febrile neutropenia, ≥ Grade 3 hemolysis, thrombocytopenia and 2) Nonhematologic toxicities - Grade 4 AE, nausea, vomiting, or diarrhea, electrolyte abnormality, ≥ Grade 3 aspartate aminotransferase (AST), alanine aminotransferase (ALT), or total bilirubin elevation, Grade 2 AST/ALT with symptomatic liver inflammation, AST or ALT \> 3 × upper limit of normal (ULN) and concurrent total bilirubin \> 2 × ULN without initial findings of cholestasis, and any other ≥ Grade 3 toxicity. A TEAE is any AE either reported for the first time or worsening of a pre-existing event after first dose of study drug and up to 100 days after last dose of study drug.

An Adverse Event (AE) is defined as any untoward medical occurrence in a clinical investigation participant administered a drug; it does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (e.g., a clinically significant abnormal laboratory finding), symptom, or disease temporally associated with the use of a drug, whether or not it is considered related to the drug. A TEAE is any AE either reported for the first time or worsening of a pre-existing event after first dose of study drug and up to 100 days after last dose of study drug.

ORR was defined as the percentage of participants having a complete response (CR) or partial response (PR) as determined by investigator assessment of radiographic disease per RECIST v1.1. CR per RECIST v 1.1 was defined as disappearance of all target lesions. PR per RECIST v 1.1 was defined as At least a 30% decrease in the sum of diameters (SOD) of target lesions, taking as reference the Baseline sum diameters. Data is reported as per dose received by the participants with a particular cancer type. CR per Cheson criteria was defined as complete disappearance of all detectable clinical evidence of disease and disease-related symptoms. PR per Cheson criteria was defined as at least a 50% decrease in sum of the product of the diameters (SPD) of up to 6 of the largest dominant nodes or nodal masses.

PFS is defined as the time from randomization to the first documented progressive disease per RECIST v1.1 or death due to any cause, whichever occurs first.

OS rate is defined as the proportion of participants alive 9 months after the start of treatment.