Anticancer Drugs Associated With Tumor Lysis Syndrome: Insights From the US Food and Drug Administration Adverse Event Reporting System.

Purpose: Tumor lysis syndrome (TLS) is a life-threatening metabolic emergency caused by rapid tumor cell breakdown, either spontaneously or after therapy, leading to electrolyte imbalances that can result in acute kidney injury, arrhythmias, seizures, and multiorgan failure. Despite its clinical importance, the relationship between anticancer drugs and TLS, particularly newer targeted therapies, remains poorly understood.

Methods: We analyzed the US Food and Drug Administration (FDA) Adverse Events Reporting System database, a repository of adverse events associated with medical products, to identify TLS cases reported from the first quarter of 2004 to the third quarter of 2024. For signal detection, we used disproportionality analysis with 4 algorithms-reported odds ratio, proportional reporting ratio, Bayesian confidence propagation neural network, and empirical Bayes geometric mean. These algorithms assessed statistical correlations between anticancer drugs and TLS, based on a 2 × 2 contingency table framework.

Findings: From the first quarter of 2004 to the third quarter of 2024, a total of 7340 TLS cases were documented in the FDA Adverse Events Reporting System database. Clinical characteristics, including age, sex, and outcomes, were analyzed. Among all reported TLS cases, 53.0% were men, and the mean age across all individuals was 56.9 ± 21.5 years. The incidence of TLS peaked in 2022, with a 42% increase from 2016 to 2017. A total of 118 antineoplastic drugs were identified as highly associated with TLS, of which only 18 had FDA-labeled TLS-related adverse reactions. Chemotherapy drugs were the most frequently associated with TLS. Venetoclax emerged as the top drug associated with TLS, comprising 10.72% of all TLS reports.

Implications: Our findings highlight critical drug-induced TLS associations, particularly with emerging targeted therapies such as venetoclax. The study underscores the need for clinicians to monitor TLS closely in patients receiving certain anticancer treatments and to refine therapeutic strategies to mitigate TLS risk, ensuring safer cancer care outcomes. Further longitudinal studies are warranted to validate these findings and enhance pharmacovigilance efforts.