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Area of Science:

  • Oncology
  • Immunology
  • Endocrinology

Background:

  • Immune checkpoint inhibitors (ICIs) are critical in cancer therapy.
  • ICIs can induce immune-related adverse events (irAEs), affecting multiple organs.
  • Hypophysitis, or pituitary inflammation, is a significant and potentially life-threatening irAE.

Purpose of the Study:

  • To highlight the importance of recognizing and managing ICI-induced hypophysitis.
  • To emphasize the diagnostic criteria and treatment strategies for this condition.
  • To underscore the need for interprofessional collaboration in managing irAEs.

Main Methods:

  • Diagnosis involves assessing symptoms, laboratory data, hormone levels, and pituitary MRI.
  • Treatment focuses on appropriate hormone replacement therapy based on severity.
  • Patient education, particularly regarding sick day rules, is crucial due to potential permanent adrenal insufficiency.

Main Results:

  • ICI-induced hypophysitis requires prompt diagnosis and management as an oncologic emergency.
  • Different ICI agents may influence symptom patterns, onset timing, and hormone deficiencies.
  • Adrenal insufficiency secondary to ACTH deficiency often requires lifelong hormone replacement.

Conclusions:

  • Early awareness and proper management of ICI-induced hypophysitis are essential.
  • Interprofessional collaboration is vital for optimal patient care and managing irAEs.
  • There is currently no established predictive biomarker for irAEs, necessitating vigilance.