Life-threatening multiorgan immune-related toxicities complicated by sepsis after anti-PD-1 therapy with complete tumor regression: a case report and literature review - Summary - MDSpire

Life-threatening multiorgan immune-related toxicities complicated by sepsis after anti-PD-1 therapy with complete tumor regression: a case report and literature review

  • By

  • Jun Dong

  • Lijun Zhang

  • Lei Yu

  • Jun Wang

  • Jijie Huang

  • Xiaoyan Wu

  • Ping-An Wu

  • Suling Chen

  • Xixi Chen

  • Wenjuan Zhu

  • Yuan Qu

  • Jishi Li

  • Victor Ho Fun Lee

  • July 1, 2026

  • 0 min

Share

Objective:

To present a case of severe multisystem immune-related adverse events (irAEs) following anti-PD-1 treatment and to review the existing literature on concurrent-onset irAEs.

Approach:
  • Case Presentation: A 73-year-old man with sinonasal squamous cell carcinoma developed severe multisystem immune toxicity after pembrolizumab and nab-paclitaxel treatment, requiring intensive care and multidisciplinary management.
  • Management Strategy: The management included corticosteroids, intravenous immunoglobulin (IVIG), and intensive care support, focusing on balancing immune control with infection risk.
Key Findings:
  • The patient experienced Stevens–Johnson syndrome, hematologic and renal failure, pneumonitis, and recurrent sepsis requiring intensive care.
  • The patient achieved complete tumor regression after one treatment cycle.
Interpretation:

The case highlights the extreme spectrum of immunologic dysregulation associated with PD-1 blockade and the importance of rapid diagnosis and multidisciplinary management.

Limitations:
  • Concurrent-onset irAEs involving multiple organs are reported in less than 1% of cases, making this scenario rare.
Conclusion:

This case highlights the need for further investigation into the management of life-threatening multiorgan irAEs.

Original Source(s)

Related Content