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Vogt-Koyanagi-Harada disease like granulomatous uveitis developed after the discontinuation of pembrolizumab administration Maya Handa 1 , Toshiyuki Oshitari 1 , Hironobu Wada 2 , Shigetoshi Yoshida 2 , Tomohiko Usui 1 1Department of Ophthalmology, International University of Health and Welfare, Narita Hospital 2Department of Thoracic Surgery, International University of Health and Welfare, Narita Hospital pp.335-341
Published Date 2023/3/15
DOI https://doi.org/10.11477/mf.1410214738
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Abstract Background:Pembrolizumab, a programed cell death 1(PD-1)inhibitor, is a humanized monoclonal antibody that has antitumor activity. Pembrolizumab binds PD-1 on activated-T cell and blocks the PD-1/PD-L1 pathway that suppresses immunoreaction of T cell. Thus, we have to pay close attention to immune-related adverse events(irAEs).

Case:A 74-year-old man with nephelopsia was referred to our hospital. He had stage IV A non-small cell lung cancer and used plural antitumor agents including pembrolizumab. Although Pembrolizumab was suspended for developing interstitial pneumonia 1 month prior, bilateral granulomatous uveitis and chorioretinitis were developed and deteriorated. The inflammation was treated with local corticosteroid. After 4 months, his fundus images showed bilateral sunset glow, which met the a diagnostic criteria of probable Vogt-Koyanagi-Harada disease(VKHD).

Discussion:VKHD is a rare condition associated with a systemic immune reaction against melanocytes as irAEs. In Pub Med, the irAEs-related VKHDs have been reported in 12 patients with melanoma, and 7 patients with other tumors. Twelve of nineteen cases are reported from Japan. VKHD is more frequently found among persons of pigmented skin including Japanese, and thus we should pay careful attention to VKHD as irAEs. The plasma half-life of immune checkpoint inhibitors(ICIs)are longer than that of other conventional antitumor agents. Therefore, long term observation should be considered for patients who have history of treatment with ICIs.


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