RT info:eu-repo/semantics/article T1 Clozapine-induced myocarditis in children and adolescents: a pharmacovigilance study using VigiBase and a systematic literature review A1 Cuevas Castresana, Carlos de las A1 Sanz Álvarez, Emilio José A1 Ruan, Can-Jun A1 Arrojo Romero, Manuel A1 Schoretsanitis, Georgios A1 León, José de A2 Medicina InternaDermatología y Psiquiatría A2 Adherencia Terapéutica K1 Adolescent K1 clozapine/adverse effects K1 clozapine/metabolism K1 clozapine/toxicity K1 mortality/drug effects K1 myocarditis/chemically induced K1 myocarditis/etiology AB Introduction: Clozapine-induced myocarditis in children (age ≤18 yo) was studied from a PubMed search (18 July 2022) (9 cases) and from the World Health Organization's pharmacovigilance database, called Vigibase, of adverse drug reaction (ADR) reports (72 non-duplicated cases). VigiBase uses a logarithmic measure of disproportionality called the information component (IC). A logistic regression model of presence/absence (40/32) of seriousness in VigiBase was developed.Areas covered: VigiBase provided a significant myocarditis IC = 4.2 with an IC025 = 3.8; only 4 clozapine-induced myocarditis cases were expected, while 72 were observed. The PubMed search identified 9 cases, while VigiBase identified 72 cases (of which 67 did not overlap with published cases). These 76 combined cases included 35 doubtful (most with missing information on the day of diagnosis), 19 possible and 22 probable, according to the ADR scale. After adjusting for confounders, quetiapine increased the risk of seriousness with an odds ratio (OR) of 17.6 (95% confidence interval CI, 1.56 to 198.6), while Australian origin decreased it with an OR = 0.13 (CI, 0.04 to 0.47).Expert opinion: These 41 cases of at least possible clozapine-induced myocarditis indicated that this ADR can definitively occur in children, particularly in the first 30 days of up-titration. Children's and adult cases appeared similar. YR 2022 FD 2022 LK http://riull.ull.es/xmlui/handle/915/39588 UL http://riull.ull.es/xmlui/handle/915/39588 LA en DS Repositorio institucional de la Universidad de La Laguna RD 26-mar-2025