Innovent Biologics, Inc. announced that the first patient has been dosed in a phase III clinical trial (ORIENT-16) that is to evaluate Tyvyt (fully human anti-PD-1 therapeutic monoclonal antibody, generic name: sintilimab injection), in combination with capecitabine and oxaliplatin, as first-line treatment for patients with advanced, recurrent or metastatic gastric or gastroesophageal junction adenocarcinoma (GC or GEJ). The ORIENT-16 study is a randomized, double-blind, multi-center, phase III trial conducted in China to evaluate the efficacy and safety of Tyvyt (sintilimab injection) or placebo in combination with chemotherapy as first-line treatment in subjects with unresectable, locally advanced, recurrent or metastatic GC or GEJ. The phase III study will enroll 650 patients. The study follows a phase Ib study that evaluated Tyvyt (sintilimab injection) in combination with chemotherapy in patients with gastric cancer. Tyvyt (sintilimab injection) is an innovative drug jointly developed by Innovent and Eli Lilly and Company in China. Tyvyt (sintilimab injection) is a type of immunoglobulin G4 monoclonal antibody, which binds to the PD-1 molecule on the surface of T-cells, blocks the PD-L1(Programmed Cell Death-1 Ligand-1, PD-L1 pathway)and reactivates T-cells to kill cancer cells. Tyvyt (sintilimab injection) is the only PD-1 antibody in China branded by both a local biopharmaceutical company and a global pharmaceutical company.