Oral immune-related adverse events caused by immune checkpoint inhibitors: a retrospective study

Michele DI Cosola1, Francesca Spirito2, Piermichele Saracino1

  • 1Department of Clinical and Experimental Medicine, Riuniti University Hospital of Foggia, Foggia, Italy.

Abstract

Insights

Immune checkpoint inhibitors (ICI) can cause oral side effects like stomatitis and xerostomia. This study found no significant difference in oral adverse events between nivolumab and pembrolizumab treatments.

Area of Science:

  • Oncology
  • Immunology
  • Oral Medicine

Background:

  • Immune checkpoint inhibitors (ICI) are associated with systemic and oral adverse events, including stomatitis, oral inflammation, and mucositis.
  • Oral lesions from ICI differ from traditional chemotherapy/radiotherapy-induced lesions and require specific characterization.
  • This study retrospectively analyzes oral immune-related adverse events (irAEs) induced by ICI therapy.

Purpose of the Study:

  • To retrospectively report and characterize oral immune-related adverse events (irAEs) in patients treated with anti-PD1 immune checkpoint inhibitors.
  • To compare the incidence and types of oral lesions between nivolumab and pembrolizumab treatments.

Main Methods:

  • A retrospective data collection was performed using an electronic table sent to clinical centers.
  • Data included patient history, habits, comorbidities, and characteristics of oral lesions during anti-PD1 therapy (nivolumab, pembrolizumab).
  • Anamnestic and clinical data were analyzed following the detection of oral lesions.

Main Results:

  • 364 patients treated with nivolumab (209) or pembrolizumab (155) were analyzed.
  • Oral adverse effects observed included stomatitis, xerostomia, candidiasis, and taste disturbances.
  • No significant difference in the incidence of oral lesions was found between nivolumab and pembrolizumab treatments.

Conclusions:

  • Further research is needed to catalog and identify oral adverse effects of PD1/PDL-1 inhibitors.
  • Close attention to oral adverse events is crucial for timely recognition, treatment, and therapy modulation to maintain patient quality of life.

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