Triptorelin associated adverse events evaluated using FAERS pharmacovigilance data

Triptorelin, a gonadotropin-releasing hormone(GnRH) agonist, is approved by the US Food and Drug Administration(FDA) for treating advanced prostate cancer, endometriosis, and central precocious puberty(CPP) in children aged ≥ 2 years. This study aimed to characterize the real-world adverse event(AE) profile associated with triptorelin using data from the FDA Adverse Event Reporting System(FAERS). We conducted a retrospective pharmacovigilance study utilizing FAERS reports from the first quarter of 2004 to the third quarter of 2024 (2004Q1-2024Q3). Disproportionality analysis employing four distinct algorithms (Reporting Odds Ratio [ROR], Proportional Reporting Ratio [PRR], Bayesian Confidence Propagation Neural Network [BCPNN], and Multi-item Gamma Poisson Shrinker [MGPS]) was performed to identify potential statistical signals of triptorelin-associated AEs. Among 18,541,994 eligible FAERS reports, 4018 primary suspect reports involving triptorelin were identified. Disproportionality analysis revealed 102 statistically significant Preferred Terms(PTs). Unexpected statistical signals warranting further investigation included defiant behavior and Alzheimer's dementia. The median time-to-onset (TTO) of AEs was 132 days (interquartile range[IQR] 36-361 days). AE reporting exhibited a bimodal distribution, with the highest proportions occurring within the first month (22.59%) and after more than one year (25.07%) following administration. Distinct statistical signal profiles were observed between genders. Analysis of FAERS data elicited statistical signals for both expected and unexpected AEs associated with triptorelin. These findings highlight potential safety signals, particularly defiant behavior and Alzheimer's dementia, which meet the European Medicines Agency (EMA) 2024 criteria for safety signals requiring further investigation. Continuous pharmacovigilance monitoring is recommended. It is crucial to emphasize that these findings represent statistical associations identified through disproportionality analysis; they require clinical validation and do not establish causality.