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ICCVAM Biennial Report 2020-2021

Biennial Progress Report 2020-2021 Interagency Coordinating Committee on the Validation of Alternative Methods
https://ntp.niehs.nih.gov/go/928322

Guidance on Nonclinical Evaluation of Immunotoxic Potential

In February 2020, FDA issued draft guidance on “Nonclinical Safety Evaluation of the Immunotoxic Potential of Drugs and Biologics.” This guidance supplements previously issued recommendations on nonclinical evaluations of immunotoxic potential and is intended to assist sponsors in such evaluations. The guidance includes several specific recommendations on assessing potential for dermal sensitization:

  • FDA no longer recommends that sponsors conduct the murine local lymph node assay to assess the sensitization potential of topical drug products due to the limitations of the assay.
  • As an alternative screen for skin sensitization for individual chemicals, FDA will consider a battery of in silico, in chemico, and in vitro studies that have been shown to adequately predict human skin sensitization with an accuracy similar to existing in vivo methods.
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