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Autoimmune Encephalitis Associated with Anti-titin Antibodies following Immune Checkpoint Inhibitor Therapy: A Case
Suzu Kanemoto1, Mariko Nishihara1, Eri Fujiwara1
1Department of Pulmonary Medicine, St. Luke's International Hospital, Japan.
None:
We present the case of a 74-year-old man with Stage IVB lung adenocarcinoma who developed changes in his psychiatric symptoms following three cycles of treatment with cisplatin, pemetrexed, and pembrolizumab. A thorough examination revealed the presence of anti-titin antibodies in the serum, leading to a diagnosis of autoimmune encephalitis. This is the first documented case of anti-titin antibody-positive encephalitis in a patient with non-small cell lung cancer (NSCLC). This case highlights the importance of considering immune-mediated neurological complications during Immune Checkpoint Inhibitor (ICI) treatment and the value of early antibody detection and prompt immunosuppressive therapy.
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