Anti-asparaginyl tRNA synthetase (Anti-KS) antibody-positive pneumonitis in a patient with immune checkpoint inhibitor treatment: A case report and literature review.

In recent years, the use of immune checkpoint inhibitors (ICI) has increased and there have been case reports of anti- aminoacyl tRNA synthetase (ARS) antibody syndrome during ICI treatment. However, these cases are limited, and their clinical characteristics are not fully understood. We report the first case of anti ARS antibody syndrome with KS antibody during ICI therapy. This report presents our case, along with a literature review of other anti ARS antibody syndrome cases that developed after ICI use, discussing their clinical characteristics and possible mechanisms of onset. Considering the widespread use of ICI in cancer therapy, we should aware of anti ARS antibody syndrome that develops during use of ICI .

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