Autoimmune Toxicity Followed by Nivolumab and Ipilimumab.

Over the last years, several new drugs have been launched for the treatment of cancer. Immune checkpoint blockade suppresses intrinsic down-regulators of immunity, such as cytotoxic T[1]lymphocyte Antigen 4 (CTLA-4) and Programmed Cell Death 1 (PD-1) or its ligand, Programmed Cell Death Ligand 1 (PD-L1). Immune checkpoint blockade enhances patient´s immune system and increased survival rates for different cancer subtypes. However, immune checkpoint blockade can lead to autoimmunity with a multitude of side effects that involve the heart, gastrointestinal tract, endocrine glands, skin, CNS and liver. We here present the case of a patient who was admitted to the emergency department with stroke- like symptoms. Whilst monitoring on stroke- unit was ongoing, he developed complete heart block and emergency transvenous pacemaker implantation had to be done. For further monitoring he was transferred to the Intensive Care Unit (ICU). Here, he developed severe shock and eventually died. Severe immune-related adverse events associated with cancer immunotherapy are not uncommon and medical professionals from different clinical departments should be aware of these potential life-threatening events.

Author(s): Matthias Mezger

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