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Envafolimab: First Approval.

Anthony Markham1

  • 1Springer Nature, Mairangi Bay, Private Bag 65901, Auckland, 0754, New Zealand. dru@adis.com.

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Summary
This summary is machine-generated.

Envafolimab, a novel single-domain antibody, is now approved in China for advanced solid tumors. This subcutaneous immunotherapy offers a new treatment option for patients with microsatellite instability-high or deficient mismatch repair tumors.

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Area of Science:

  • Oncology
  • Immunotherapy
  • Pharmacology

Background:

  • Envafolimab is a single-domain antibody targeting programmed death ligand 1 (PD-L1).
  • Single-domain antibodies offer advantages in solubility and tissue penetration compared to monoclonal antibodies.
  • Subcutaneous administration is enabled by the properties of single-domain antibodies.

Purpose of the Study:

  • To summarize the development milestones of envafolimab.
  • To highlight the regulatory approval in China for specific cancer types.

Main Methods:

  • Review of pivotal phase II trial data.
  • Analysis of envafolimab's development pathway.

Main Results:

  • Subcutaneous envafolimab demonstrated efficacy in a pivotal phase II trial.
  • Envafolimab received approval in China for previously-treated adult patients with advanced solid tumors exhibiting microsatellite instability-high (MSI-H) or deficient mismatch repair (dMMR).

Conclusions:

  • Envafolimab represents a significant advancement in the treatment of MSI-H/dMMR advanced solid tumors.
  • The approval marks a key milestone for this subcutaneously administered immunotherapy.