Cutaneous Toxicities in the Setting of Immune Checkpoint Blockade:: The Era of Oncodermatopathology

Surg Pathol Clin. 2021 Jun;14(2):209-224. doi: 10.1016/j.path.2021.01.002. Epub 2021 Apr 28.

Abstract

Advancements in cancer therapy with monoclonal immune checkpoint antibody blockade have impacted the practice of all medical specialties. Cutaneous immune-related adverse events (irAEs) are a frequent, unintended, off-target consequence of immune checkpoint inhibitor (ICI) therapy that have ushered in the era of oncodermatopathology. Knowledge of the diverse morphologic types of cutaneous irAEs from ICI therapy allows further classification of cutaneous irAEs according to major histopathologic reaction patterns. Early studies suggest that immune mechanisms of lichenoid dermatitis irAE, psoriasiform dermatitis irAE, and bullous pemphigoid irAE show some similarities and differences from their histopathologic counterparts not associated with ICI therapy.

Keywords: Cutaneous toxicities; Immune checkpoint inhibitor; Oncodermatopathology.

Publication types

  • Review

MeSH terms

  • Humans
  • Immune Checkpoint Inhibitors*
  • Neoplasms* / drug therapy

Substances

  • Immune Checkpoint Inhibitors