Time frame: From the start of maintenance therapy in Cycle 5 (21-day cycle) until the date of measured progressive disease (PD) or death from any cause (up to 18 months)
Percentage of participants who achieved confirmed CR (disappearance of all target lesions), PR (30% decrease in sum of longest diameter of target lesions), or SD (small changes that do not meet above criteria). Response derived from target lesion assessments performed before maintenance therapy (as baseline), during maintenance therapy (as post-baseline), and non-target lesion assessments performed during maintenance therapy according to RECIST guideline version 1.0, defines when cancer participants improve ("respond"), stay the same ("stabilize"), or worsen ("progression") during treatments.