Abstract
ABSTRACT Background Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are rare and life-threatening skin adverse reactions that are usually induced by drugs. This study aimed to assess the association between methotrexate and SJS/TEN when combined with furosemide. Research design and methods Data on suspicious, interactions (PS, SS, I) from the FDA Adverse Event Reporting System database for 2016–2021 were analyzed using the reporting odds ratio (ROR), information component (IC), proportional reporting ratio (PRR) and the Medications and Health Care Products Regulatory Agency (MHRA). Results We identified 28 case reports of TEN associated with the combination of furosemide and methotrexate and 10 reports of SJS associated with furosemide and methotrexate. The association of methotrexate with SJS/TEN was more significant in the entire data set when combined with furosemide than when methotrexate was not combined with furosemide. The association of methotrexate with SJS/TEN remained significant when furosemide was combined with methotrexate in a tumor-based disease context. After sensitivity analysis of the entire dataset as well as all antineoplastic drug datasets, consistent results were observed for TEN. Conclusions Our study confirmed a significant association between methotrexate and SJS/TEN when combined with furosemide, with an increased risk of SJS/TEN.
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