Effects of Single Agent Niraparib and Niraparib Plus Programmed Cell Death-1 (PD-1) Inhibitors in Non-Small Cell Lung Cancer Participants

Niraparib is an orally available, potent, highly selective poly adenosine diphosphate- ribose (poly ADP-ribose) polymerase-1 (PARP-1) and PARP-2 inhibitor. It will be available as 100 milligrams (mg) capsules and will be administered as 2 X 100 mg capsules (200 mg per day) orally once daily (QD).

Pembrolizumab is a potent and highly selective humanized monoclonal antibody (mAb) of the immunoglobulin G-4 (IgG4)/kappa isotype designed to directly block the interaction between PD-1 and its ligands (PD-L1 and PD-L2). It will be available as 50 mg lyophilized powder single-use vials or 100 mg/4 milliliters (mL) (25 mg/mL) solution in a single-dose vial. It will be administered at a dose of 200 mg intravenous (IV) using a 30-minute IV infusion

TSR-042 (Dostarlimab) is a humanized mAb of the IgG4/kappa isotype that binds with high affinity to PD-1, resulting in inhibition of binding to PD-L1 and PD-L2. It will be administered at a dose of 500 mg for every 3 weeks (Q3W) for first 4 cycles followed by 1000 mg for every 6 weeks (Q6W) for all subsequent cycles using a 30-minute IV infusion. TSR-042 (dostarlimab) will be supplied as a solution of 160 mg (20 mg/mL) or 500 mg (50 mg/mL) in a single-dose vial.