Potential drugs for reducing the occurrence of immune checkpoint inhibitor-induced interstitial lung disease: an exploratory study using the JADER and FAERS databases.

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Immune checkpoint inhibitors (ICIs) play a central role in cancer immunotherapy. However, the occurrence of immune-related adverse events, especially ICI-induced interstitial lung disease (ICI-ILD), is life-threatening and affects the effectiveness of ICI treatment. This study aimed to explore potential drugs to mitigate ICI-ILD occurrence using data from the Japanese Adverse Drug Event Report (JADER) and the US Food and Drug Administration (FDA) Adverse Event Reporting System (FAERS [JAPIC AERS]). We investigated concomitant drugs that reduce ILD associated with four ICIs - nivolumab, pembrolizumab, atezolizumab, and durvalumab - across the JADER and FAERS databases. Subsequently, the identified common concomitant drugs that reduce the occurrence of ICI-ILD were detected and analyzed. We found omega-3 fatty acids, loperamide, and amlodipine as common concomitant drugs that reduced ICI-ILD occurrence in both the JADER and FAERS databases. Omega-3 fatty acids reportedly have many effects in animal models of drug-induced ILD, including their association with ILD in humans and anti-inflammatory effects against ICI-ILD. However, loperamide and amlodipine reportedly have minimal effects against ILD, thereby necessitating further evaluation. Omega-3 fatty acids have emerged as potential agents for reducing ICI-ILD occurrence, as evidenced by findings from two different pharmacovigilance databases.