Patients will be centrally allocated in a randomized fashion (3:1:1:3) to receive either:
Arm 1: Nemvaleukin and pembrolizumab combination therapy Arm 2: Pembrolizumab monotherapy Arm 3: Nemvaleukin monotherapy Arm 4: Investigator's choice chemotherapy include one of the following: pegylated liposomal doxorubicin (PLD), paclitaxel, topotecan, or gemcitabine.