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Cascade of immunologic adverse events related to pembrolizumab treatment
  1. Arnaud Dhenin1,
  2. Vassiliki Samartzi2,
  3. Sarah Lejeune1 and
  4. Emmanuel Seront1
  1. 1 Department of Medical Oncology, Hopital de Jolimont, Haine-Saint-Paul, Belgium
  2. 2 Department of Gynecology, Hopital de Jolimont, Haine-Saint-Paul, Belgium
  1. Correspondence to Dr Emmanuel Seront, Emmanuel.seront{at}


Immune checkpoint inhibitors, such as pembrolizumab, have significantly improved cancer patient outcome. Toxicities are usually moderate and manageable. However, some adverse events, if not early recognised, could be life-threatening. We report a patient with non-small cell lung cancer who received treatment with pembrolizumab and developed multiple immune-related adverse events both during and after completing treatment, including rash, pericarditis, colitis and myasthenia gravis.

  • pericardial disease
  • gastrointestinal system
  • immunological products and vaccines
  • neuromuscular disease
  • lung cancer (oncology)
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  • Contributors AD reported the case and wrote the manuscript. VS and SL wrote and revised the manuscript. ES planned, reported, wrote and revised the manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Patient consent for publication Obtained.

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