Sintilimab (IBI 308)

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Mechanism of action

From NCI Drug Dictionary: A recombinant human monoclonal antibody directed against the negative immunoregulatory human cell surface receptor programmed cell death 1 (PD-1; PDCD1; PD1), with potential immune checkpoint inhibitory and antineoplastic activities. Upon administration, sintilimab binds to PD-1 and inhibits the binding of PD-1 to the PD-1 ligands programmed cell death-1 ligand 1 (PD-L1), and PD-1 ligand 2 (PD-L2). This prevents the activation of PD-1 and its downstream signaling pathways. This may restore immune function through the activation of both T cells and T-cell-mediated immune responses against tumor cells.

Preliminary data

Non-small cell lung cancer

  1. CIBI308C302: Yang Y, Wang Z, Fang J, Yu Q, Han B, Cang S, Chen G, Mei X, Yang Z, Ma R, Bi M, Ren X, Zhou J, Li B, Song Y, Feng J, Li J, He Z, Zhou R, Li W, Lu Y, Wang Y, Wang L, Yang N, Zhang Y, Yu Z, Zhao Y, Xie C, Cheng Y, Zhou H, Wang S, Zhu D, Zhang W, Zhang L. Efficacy and Safety of Sintilimab Plus Pemetrexed and Platinum as First-Line Treatment for Locally Advanced or Metastatic Nonsquamous NSCLC: a Randomized, Double-Blind, Phase 3 Study (Oncology pRogram by InnovENT anti-PD-1-11). J Thorac Oncol. 2020 Oct;15(10):1636-1646. Epub 2020 Aug 8. link to original article PubMed NCT03607539

Also known as

  • Code name: IBI 308