Defined as complete response (CR) or partial response (PR) by Response Evaluation Criteria in Solid Tumors (RECIST v1.1). The ORR at stages 1 and 2 will be estimated using the method of Whitehead, and the p-values for testing the null hypothesis at each stage will use the method of Koyama \& Chen and 90% confidence interval will be reported.

DLT:Adverse event(AE)/abnormal laboratory assessed unrelated-disease,disease progression,intercurrent illness/concomitant medication/therapies resulting inability tolerate 75% dose intensity in Cycle 1.Total bilirubin(TBL)grade(G)\>=3 (\>3.0\*upper limit of normal\[ULN)\]);AST/ALT\>5-8\*ULN\>5 days,\>8\*ULN,\>3\*ULN concurrent TBL\>2\*ULN;G\>=3 serum creatinine,CK elevation,ECG QTcF prolonged,G3 troponin,electrolyte\>72 hours,G3/4 amylase/lipase.G4 ANC,platelet count\>7 days;G3/4 platelet count,other AE except lymphopenia.G\>=3 retinopathy,other disorder\>21 days;G2 uveitis/eye pain/blurred vision/decreased visual acuity;G4 other disorder.Decrease LVEF\>10% G\>=3 cardiac disorders.G3/4 hypertension.G3 fatigue\>=7 days,hypersensitivity,infusion reaction,fever\>=72 hours/hemodynamic compromise,endocrinopathy.G\>=2 interstitial lung disease/pneumonitis;G3 bronchospasm.G3/4 rash,hand foot skin reaction,photosensitivity.G3 colitis;G3/4 diarrhea,nausea/vomiting.Neurologic G3.Other hematologic/nonhematolic G\>=3 AE.

ORR was defined as the percentage of participants who achieved a best overall response (BOR) of complete response (CR) or partial response (PR) as determined by investigator per RECIST v1.1. As per RECIST v1.1, CR was defined as disappearance of target and non-target lesions and normalization of tumor markers. Pathological lymph nodes must have short axis measures less than (\<)10 millimeter (mm). PR was defined as at least a 30% decrease in the sum of measures (longest diameter for tumor lesions and short axis measure for nodes) of target lesions, taking as reference baseline sum of diameters. Non-target lesions must be non-progressive disease (PD). PD was defined as at least a 20% increase in sum of diameters of target lesions, taking as reference the smallest sum on study. In addition to relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. The appearance of one or more new lesions was considered progression.