Study of Niraparib, TSR-022, Bevacizumab, and Platinum-Based Doublet Chemotherapy in Combination With TSR-042

Niraparib is a potent, orally active PARP1 and PARP2 inhibitor being developed as a treatment for patients with tumors that harbor defects in the homologous recombination DNA repair pathway or that are driven by PARP-mediated transcription factors.

TSR-042 is a humanized monoclonal antibody that binds with high affinity to PD-1 resulting in inhibition of binding to programmed death receptor ligands 1 and 2 (PD-L1 and PD-L2).

Carboplatin in combination with paclitaxel is a chemotherapy treatment that has been shown to be efficacious against a variety of different tumor types, including non-small cell lung cancer \[NSCLC\], ovarian cancer, endometrial cancer, and head and neck cancer.

Bevacizumab is a chemotherapy treatment that has been shown to be efficacious against a variety of different cancer types, including colon cancer, lung cancer, glioblastoma, and renal-cell carcinoma. Bevacizumab is in the angiogenesis inhibitor and monoclonal antibody families of medication. It works by slowing the growth of new blood vessels.

"TSR-022 is a monoclonal antibody against TIM-3 (also called HAVCR2), an immune checkpoint receptor. Immune checkpoint proteins are molecules that help to regulate the immune system so it does not mistakenly attack healthy cells. However, they can also keep immune cells from recognizing and killing cancer cells.~TIM-3 is found on the surface of certain T-cells, including tumor-infiltrating T-cells, that have left the bloodstream and migrated into the tumor environment. By binding to and blocking TIM-3, TRS-022 allows for T-cells to become activated so as to enhance T-cell-mediated attacks on tumors. These attacks reduce their growth."

Pemetrexed and platinum therapy in combination with pembrolizumab (anti-PD-1 antibody) has proven to be efficacious in a first line setting for nonsquamous NSCLC patients

Nab-paclitaxel is a formulation of paclitaxel that is indicated for locally advanced or metastatic NSCLC, as first-line treatment in combination with carboplatin in patients who are not candidates for curative surgery or radiation therapy. Nab-paclitaxel has shown increased ORR and time to progression in metastatic breast cancer compared with solvent-based paclitaxel and has shown antitumor activity and improved ORR compared with solvent-based paclitaxel as first-line therapy in patients with NSCLC.