Envafolimab

• CAT Number: I043258
• CAS Number: 2102192-68-5
• Purity: ≥95%

Envafolimab (ASC 22; KN 035) is a recombinant protein of a humanized single-domain anti- PD-L1 antibody. Envafolimab is created by a fusion of the of anti-PD-L1 domain with Fc fragment of human IgG1 antibody. Envafolimab blocks interaction between PD-L1 and PD-1 with an IC50 value of 5.25 nM. Envafolimab has the potential for the research of solid tumors[1][2][3].
Envafolimab (0-2.51 nM) induces T-cell cytokine (IFN-γ) production in a dose- and time-dependent manner[3].
Envafolimab (0.18-0.92 mg/kg; i.p.; four times over 2 weeks) shows antitumor activity with a half-life of ~72 h in NOD-SCID mice (A375 cells)[3].

Reference

[1]. Papadopoulos KP, et al. First-in-Human Phase I Study of Envafolimab, a Novel Subcutaneous Single-Domain Anti-PD-L1 Antibody, in Patients with Advanced Solid Tumors. Oncologist. 2021 Sep;26(9):e1514-e1525.
 [Content Brief]

[2]. Akinleye A, et al. Immune checkpoint inhibitors of PD-L1 as cancer therapeutics. J Hematol Oncol. 2019 Sep 5;12(1):92.
 [Content Brief]

[3]. Zhang F, Wei H, Wang X, Bai Y, Wang P, Wu J, Jiang X, Wang Y, Cai H, Xu T, Zhou A. Structural basis of a novel PD-L1 nanobody for immune checkpoint blockade. Cell Discov. 2017 Mar 7;3:17004.
 [Content Brief]